Index: vendor/mdocml/dist/INSTALL =================================================================== --- vendor/mdocml/dist/INSTALL (revision 321806) +++ vendor/mdocml/dist/INSTALL (revision 321807) @@ -1,157 +1,159 @@ -$Id: INSTALL,v 1.18 2017/02/08 12:24:10 schwarze Exp $ +$Id: INSTALL,v 1.20 2017/07/28 14:57:56 schwarze Exp $ -About mdocml, the portable mandoc distribution ----------------------------------------------- -The mandoc manpage compiler toolset is a suite of tools compiling -mdoc(7), the roff(7) macro language of choice for BSD manual pages, -and man(7), the predominant historical language for UNIX manuals. +About the portable mandoc distribution +-------------------------------------- +The mandoc manpage compiler toolset (formerly called "mdocml") +is a suite of tools compiling mdoc(7), the roff(7) macro language +of choice for BSD manual pages, and man(7), the predominant +historical language for UNIX manuals. + It includes a man(1) manual viewer and additional tools. -For general information, see . +For general information, see . In case you have questions or want to provide feedback, read -. Consider subscribing to the +. Consider subscribing to the discuss@ mailing list mentioned on that page. If you intend to help with the development of mandoc, consider subscribing to the tech@ mailing list, too. Enjoy using the mandoc toolset! -Ingo Schwarze, Karlsruhe, February 2017 +Ingo Schwarze, Karlsruhe, July 2017 Installation ------------ Before manually installing mandoc on your system, please check whether the newest version of mandoc is already installed by default or available via a binary package or a ports system. A list of the latest bundled and ported versions of mandoc for various operating -systems is maintained at . +systems is maintained at . Regarding how packages and ports are maintained for your operating system, please consult your operating system documentation. To install mandoc manually, the following steps are needed: 1. If you want to build the CGI program, man.cgi(8), too, run the command "echo BUILD_CGI=1 >> configure.local". Then run "cp cgi.h.example cgi.h" and edit cgi.h as desired. -2. If you also want to build the new catman(8) utility, run the +2. If you also want to build the catman(8) utility, run the command "echo BUILD_CATMAN=1 >> configure.local". Note that it is unlikely to be a drop-in replacement providing the same functionality as your system's "catman", if your operating system contains one. 3. Define MANPATH_DEFAULT in configure.local if /usr/share/man:/usr/X11R6/man:/usr/local/man is not appropriate for your operating system. 4. Run "./configure". This script attempts autoconfiguration of mandoc for your system. Read both its standard output and the file "Makefile.local" it generates. If anything looks wrong or different from what you wish, read the file "configure.local.example", create and edit a file "configure.local", and re-run "./configure" until the result seems right to you. On Solaris 10 and earlier, you may have to run "ksh ./configure" because the native /bin/sh lacks some POSIX features. 5. Run "make". Any POSIX-compatible make, in particular both BSD make and GNU make, should work. If the build fails, look at "configure.local.example" and go back to step 2. 6. Run "make -n install" and check whether everything will be installed to the intended places. Otherwise, put some *DIR or *NM* variables into "configure.local" and go back to step 4. 7. Optionally run the regression suite. Basically, that amounts to "cd regress && ./regress.pl". But you should probably look at "./mandoc -l regress/regress.pl.1" first. 8. Run "sudo make install". If you intend to build a binary package using some kind of fake root mechanism, you may need a command like "make DESTDIR=... install". Read the *-install targets in the "Makefile" to understand how DESTDIR is used. 9. Run the command "sudo makewhatis" to build mandoc.db(5) databases -in all the directory trees configured in step 6. Whenever installing +in all the directory trees configured in step 3. Whenever installing new manual pages, re-run makewhatis(8) to update the databases, or apropos(1) will not find the new pages. 10. To set up a man.cgi(8) server, read its manual page. Note that some man(7) pages may contain low-level roff(7) markup that mandoc does not yet understand. On some BSD systems using mandoc, third-party software is vetted on whether it may be formatted with mandoc. If not, groff(1) is pulled in as a dependency and used to install a pre-formatted "catpage" instead of directly as manual page source. Understanding mandoc dependencies --------------------------------- The following libraries are required: 1. zlib for decompressing gzipped manual pages. 2. The fts(3) directory traversion functions. If your system does not have them, the bundled compatibility version will be used, so you need not worry in that case. But be careful: old glibc versions of fts(3) were known to be broken on 32bit platforms, see . That was presumably fixed in glibc-2.23. If you run into that problem, set "HAVE_FTS=0" in configure.local. 3. Marc Espie's ohash(3) library. If your system does not have it, the bundled compatibility version will be used, so you probably need not worry about it. One of the chief design goals of the mandoc toolbox is to make sure that nothing related to documentation requires C++. Consequently, linking mandoc against any kind of C++ program would defeat the purpose and is not supported. Checking autoconfiguration quality ---------------------------------- If you want to check whether automatic configuration works well on your platform, consider the following: The mandoc package intentionally does not use GNU autoconf because we consider that toolset a blatant example of overengineering that is obsolete nowadays, since all modern operating systems are now reasonably close to POSIX and do not need arcane shell magic any longer. If your system does need such magic, consider upgrading to reasonably modern POSIX-compliant tools rather than asking for autoconf-style workarounds. As far as mandoc is using any features not mandated by ANSI X3.159-1989 ("ANSI C") or IEEE Std 1003.1-2008 ("POSIX") that some modern systems do not have, we intend to provide autoconfiguration tests and compat_*.c implementations. Please report any that turn out to be missing. Note that while we do strive to produce portable code, we do not slavishly restrict ourselves to POSIX-only interfaces. For improved security and readability, we do use well-designed, modern interfaces like reallocarray(3) even if they are still rather uncommon, of course bundling compat_*.c implementations as needed. Where mandoc is using ANSI C or POSIX features that some systems still lack and that compat_*.c implementations can be provided for without too much hassle, we will consider adding them, too, so please report whatever is missing on your platform. The following steps can be used to manually check the automatic configuration on your platform: 1. Run "make distclean". 2. Run "./configure" 3. Read the file "config.log". It shows the compiler commands used to test the libraries installed on your system and the standard output and standard error output these commands produce. Watch out for unexpected failures. Those are most likely to happen if headers or libraries are installed in unusual places or interfaces defined in unusual headers. You can also look at the file "config.h" and check that no "#define HAVE_*" differ from your expectations. Index: vendor/mdocml/dist/LICENSE =================================================================== --- vendor/mdocml/dist/LICENSE (revision 321806) +++ vendor/mdocml/dist/LICENSE (revision 321807) @@ -1,54 +1,54 @@ -$Id: LICENSE,v 1.15 2017/02/21 00:37:03 schwarze Exp $ +$Id: LICENSE,v 1.17 2017/06/23 15:58:14 schwarze Exp $ With the exceptions noted below, all code and documentation -contained in the mdocml toolkit is protected by the Copyright +contained in the mandoc toolkit is protected by the Copyright of the following developers: Copyright (c) 2008-2012, 2014 Kristaps Dzonsons Copyright (c) 2010-2017 Ingo Schwarze Copyright (c) 2009, 2010, 2011, 2012 Joerg Sonnenberger Copyright (c) 2013 Franco Fichtner Copyright (c) 2014 Baptiste Daroussin Copyright (c) 2016 Ed Maste Copyright (c) 2017 Michael Stapelberg Copyright (c) 1999, 2004 Marc Espie Copyright (c) 1998, 2004, 2010 Todd C. Miller -Copyright (c) 2008 Otto Moerbeek +Copyright (c) 2008, 2017 Otto Moerbeek Copyright (c) 2004 Ted Unangst Copyright (c) 1994 Christos Zoulas Copyright (c) 2003, 2007, 2008, 2014 Jason McIntyre See the individual source files for information about who contributed to which file during which years. -The mdocml distribution as a whole is distributed by its developers +The mandoc distribution as a whole is distributed by its developers under the following license: Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. The following files included from outside sources are protected by other people's Copyright and are distributed under various 2-clause and 3-clause BSD licenses; see these individual files for details. soelim.c, soelim.1: Copyright (c) 2014 Baptiste Daroussin compat_err.c, compat_fts.c, compat_fts.h, compat_getsubopt.c, compat_strcasestr.c, compat_strsep.c, man.1: Copyright (c) 1989,1990,1993,1994 The Regents of the University of California compat_stringlist.c, compat_stringlist.h: Copyright (c) 1994 Christos Zoulas Index: vendor/mdocml/dist/Makefile =================================================================== --- vendor/mdocml/dist/Makefile (revision 321806) +++ vendor/mdocml/dist/Makefile (revision 321807) @@ -1,575 +1,573 @@ -# $Id: Makefile,v 1.512 2017/05/07 17:31:45 schwarze Exp $ +# $Id: Makefile,v 1.516 2017/07/20 16:24:53 schwarze Exp $ # # Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons # Copyright (c) 2011, 2013-2017 Ingo Schwarze # # Permission to use, copy, modify, and distribute this software for any # purpose with or without fee is hereby granted, provided that the above # copyright notice and this permission notice appear in all copies. # # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. -VERSION = 1.14.1 +VERSION = 1.14.2 # === LIST OF FILES ==================================================== TESTSRCS = test-be32toh.c \ test-cmsg.c \ test-dirent-namlen.c \ test-EFTYPE.c \ test-err.c \ test-fts.c \ test-getline.c \ test-getsubopt.c \ test-isblank.c \ test-mkdtemp.c \ test-nanosleep.c \ test-ntohl.c \ test-O_DIRECTORY.c \ test-ohash.c \ test-PATH_MAX.c \ test-pledge.c \ test-progname.c \ test-recvmsg.c \ test-reallocarray.c \ + test-recallocarray.c \ test-rewb-bsd.c \ test-rewb-sysv.c \ test-sandbox_init.c \ test-strcasestr.c \ test-stringlist.c \ test-strlcat.c \ test-strlcpy.c \ test-strptime.c \ test-strsep.c \ test-strtonum.c \ test-vasprintf.c \ test-wchar.c SRCS = att.c \ catman.c \ cgi.c \ chars.c \ compat_err.c \ compat_fts.c \ compat_getline.c \ compat_getsubopt.c \ compat_isblank.c \ compat_mkdtemp.c \ compat_ohash.c \ compat_progname.c \ compat_reallocarray.c \ + compat_recallocarray.c \ compat_strcasestr.c \ compat_stringlist.c \ compat_strlcat.c \ compat_strlcpy.c \ compat_strsep.c \ compat_strtonum.c \ compat_vasprintf.c \ dba.c \ dba_array.c \ dba_read.c \ dba_write.c \ dbm.c \ dbm_map.c \ demandoc.c \ eqn.c \ eqn_html.c \ eqn_term.c \ html.c \ lib.c \ main.c \ man.c \ man_html.c \ man_macro.c \ man_term.c \ man_validate.c \ mandoc.c \ mandoc_aux.c \ mandoc_ohash.c \ + mandoc_xr.c \ mandocd.c \ mandocdb.c \ manpath.c \ mansearch.c \ mdoc.c \ mdoc_argv.c \ mdoc_html.c \ mdoc_macro.c \ mdoc_man.c \ mdoc_markdown.c \ mdoc_state.c \ mdoc_term.c \ mdoc_validate.c \ msec.c \ out.c \ preconv.c \ read.c \ roff.c \ roff_html.c \ roff_term.c \ roff_validate.c \ soelim.c \ st.c \ tag.c \ tbl.c \ tbl_data.c \ tbl_html.c \ tbl_layout.c \ tbl_opts.c \ tbl_term.c \ term.c \ term_ascii.c \ term_ps.c \ term_tab.c \ tree.c DISTFILES = INSTALL \ LICENSE \ Makefile \ Makefile.depend \ NEWS \ TODO \ apropos.1 \ catman.8 \ cgi.h.example \ compat_fts.h \ compat_ohash.h \ compat_stringlist.h \ configure \ configure.local.example \ dba.h \ dba_array.h \ dba_write.h \ dbm.h \ dbm_map.h \ demandoc.1 \ eqn.7 \ gmdiff \ html.h \ lib.in \ libman.h \ libmandoc.h \ libmdoc.h \ libroff.h \ main.h \ makewhatis.8 \ man.1 \ man.7 \ man.cgi.3 \ man.cgi.8 \ man.conf.5 \ man.h \ man.options.1 \ manconf.h \ mandoc.1 \ mandoc.3 \ mandoc.css \ mandoc.db.5 \ mandoc.h \ mandoc_aux.h \ mandoc_char.7 \ mandoc_escape.3 \ mandoc_headers.3 \ mandoc_html.3 \ mandoc_malloc.3 \ mandoc_ohash.h \ + mandoc_xr.h \ mandocd.8 \ mansearch.3 \ mansearch.h \ mchars_alloc.3 \ mdoc.7 \ mdoc.h \ msec.in \ out.h \ predefs.in \ roff.7 \ roff.h \ roff_int.h \ soelim.1 \ st.in \ tag.h \ tbl.3 \ tbl.7 \ term.h \ $(SRCS) \ $(TESTSRCS) LIBMAN_OBJS = man.o \ man_macro.o \ man_validate.o LIBMDOC_OBJS = att.o \ lib.o \ mdoc.o \ mdoc_argv.o \ mdoc_macro.o \ mdoc_state.o \ mdoc_validate.o \ st.o LIBROFF_OBJS = eqn.o \ roff.o \ roff_validate.o \ tbl.o \ tbl_data.o \ tbl_layout.o \ tbl_opts.o LIBMANDOC_OBJS = $(LIBMAN_OBJS) \ $(LIBMDOC_OBJS) \ $(LIBROFF_OBJS) \ chars.o \ mandoc.o \ mandoc_aux.o \ mandoc_ohash.o \ + mandoc_xr.o \ msec.o \ preconv.o \ read.o COMPAT_OBJS = compat_err.o \ compat_fts.o \ compat_getline.o \ compat_getsubopt.o \ compat_isblank.o \ compat_mkdtemp.o \ compat_ohash.o \ compat_progname.o \ compat_reallocarray.o \ + compat_recallocarray.o \ compat_strcasestr.o \ compat_strlcat.o \ compat_strlcpy.o \ compat_strsep.o \ compat_strtonum.o \ compat_vasprintf.o MANDOC_HTML_OBJS = eqn_html.o \ html.o \ man_html.o \ mdoc_html.o \ roff_html.o \ tbl_html.o MANDOC_TERM_OBJS = eqn_term.o \ man_term.o \ mdoc_term.o \ roff_term.o \ term.o \ term_ascii.o \ term_ps.o \ term_tab.o \ tbl_term.o DBM_OBJS = dbm.o \ dbm_map.o \ mansearch.o DBA_OBJS = dba.o \ dba_array.o \ dba_read.o \ dba_write.o \ mandocdb.o MAIN_OBJS = $(MANDOC_HTML_OBJS) \ $(MANDOC_MAN_OBJS) \ $(MANDOC_TERM_OBJS) \ $(DBM_OBJS) \ $(DBA_OBJS) \ main.o \ manpath.o \ mdoc_man.o \ mdoc_markdown.o \ out.o \ tag.o \ tree.o CGI_OBJS = $(MANDOC_HTML_OBJS) \ $(DBM_OBJS) \ cgi.o \ out.o MANDOCD_OBJS = $(MANDOC_HTML_OBJS) \ $(MANDOC_TERM_OBJS) \ mandocd.o \ out.o \ tag.o DEMANDOC_OBJS = demandoc.o SOELIM_OBJS = soelim.o \ compat_err.o \ compat_getline.o \ compat_progname.o \ compat_reallocarray.o \ compat_stringlist.o WWW_MANS = apropos.1.html \ demandoc.1.html \ man.1.html \ mandoc.1.html \ soelim.1.html \ man.cgi.3.html \ mandoc.3.html \ mandoc_escape.3.html \ mandoc_headers.3.html \ mandoc_html.3.html \ mandoc_malloc.3.html \ mansearch.3.html \ mchars_alloc.3.html \ tbl.3.html \ man.conf.5.html \ mandoc.db.5.html \ eqn.7.html \ man.7.html \ mandoc_char.7.html \ mandocd.8.html \ mdoc.7.html \ roff.7.html \ tbl.7.html \ catman.8.html \ makewhatis.8.html \ man.cgi.8.html \ man.h.html \ manconf.h.html \ mandoc.h.html \ mandoc_aux.h.html \ mansearch.h.html \ mdoc.h.html \ roff.h.html -WWW_OBJS = mdocml.tar.gz \ - mdocml.sha256 - # === USER CONFIGURATION =============================================== include Makefile.local # === DEPENDENCY HANDLING ============================================== all: mandoc demandoc soelim $(BUILD_TARGETS) Makefile.local install: base-install $(INSTALL_TARGETS) -www: $(WWW_OBJS) $(WWW_MANS) +www: $(WWW_MANS) $(WWW_MANS): mandoc .PHONY: base-install cgi-install install www-install .PHONY: clean distclean depend include Makefile.depend # === TARGETS CONTAINING SHELL COMMANDS ================================ distclean: clean rm -f Makefile.local config.h config.h.old config.log config.log.old clean: rm -f libmandoc.a $(LIBMANDOC_OBJS) $(COMPAT_OBJS) rm -f mandoc $(MAIN_OBJS) rm -f man.cgi $(CGI_OBJS) - rm -f mandocd catman $(MANDOCD_OBJS) + rm -f mandocd catman catman.o $(MANDOCD_OBJS) rm -f demandoc $(DEMANDOC_OBJS) rm -f soelim $(SOELIM_OBJS) - rm -f $(WWW_MANS) $(WWW_OBJS) + rm -f $(WWW_MANS) mandoc.tar.gz mandoc.sha256 rm -rf *.dSYM base-install: mandoc demandoc soelim mkdir -p $(DESTDIR)$(BINDIR) mkdir -p $(DESTDIR)$(SBINDIR) mkdir -p $(DESTDIR)$(MANDIR)/man1 mkdir -p $(DESTDIR)$(MANDIR)/man5 mkdir -p $(DESTDIR)$(MANDIR)/man7 mkdir -p $(DESTDIR)$(MANDIR)/man8 $(INSTALL_PROGRAM) mandoc demandoc $(DESTDIR)$(BINDIR) $(INSTALL_PROGRAM) soelim $(DESTDIR)$(BINDIR)/$(BINM_SOELIM) cd $(DESTDIR)$(BINDIR) && $(LN) mandoc $(BINM_MAN) cd $(DESTDIR)$(BINDIR) && $(LN) mandoc $(BINM_APROPOS) cd $(DESTDIR)$(BINDIR) && $(LN) mandoc $(BINM_WHATIS) cd $(DESTDIR)$(SBINDIR) && \ $(LN) ${BIN_FROM_SBIN}/mandoc $(BINM_MAKEWHATIS) $(INSTALL_MAN) mandoc.1 demandoc.1 $(DESTDIR)$(MANDIR)/man1 $(INSTALL_MAN) soelim.1 $(DESTDIR)$(MANDIR)/man1/$(BINM_SOELIM).1 $(INSTALL_MAN) man.1 $(DESTDIR)$(MANDIR)/man1/$(BINM_MAN).1 $(INSTALL_MAN) apropos.1 $(DESTDIR)$(MANDIR)/man1/$(BINM_APROPOS).1 cd $(DESTDIR)$(MANDIR)/man1 && $(LN) $(BINM_APROPOS).1 $(BINM_WHATIS).1 $(INSTALL_MAN) man.conf.5 $(DESTDIR)$(MANDIR)/man5/$(MANM_MANCONF).5 $(INSTALL_MAN) mandoc.db.5 $(DESTDIR)$(MANDIR)/man5 $(INSTALL_MAN) man.7 $(DESTDIR)$(MANDIR)/man7/$(MANM_MAN).7 $(INSTALL_MAN) mdoc.7 $(DESTDIR)$(MANDIR)/man7/$(MANM_MDOC).7 $(INSTALL_MAN) roff.7 $(DESTDIR)$(MANDIR)/man7/$(MANM_ROFF).7 $(INSTALL_MAN) eqn.7 $(DESTDIR)$(MANDIR)/man7/$(MANM_EQN).7 $(INSTALL_MAN) tbl.7 $(DESTDIR)$(MANDIR)/man7/$(MANM_TBL).7 $(INSTALL_MAN) mandoc_char.7 $(DESTDIR)$(MANDIR)/man7 $(INSTALL_MAN) makewhatis.8 \ $(DESTDIR)$(MANDIR)/man8/$(BINM_MAKEWHATIS).8 lib-install: libmandoc.a mkdir -p $(DESTDIR)$(LIBDIR) mkdir -p $(DESTDIR)$(INCLUDEDIR) mkdir -p $(DESTDIR)$(MANDIR)/man3 $(INSTALL_LIB) libmandoc.a $(DESTDIR)$(LIBDIR) $(INSTALL_LIB) man.h mandoc.h mandoc_aux.h mdoc.h roff.h \ $(DESTDIR)$(INCLUDEDIR) $(INSTALL_MAN) mandoc.3 mandoc_escape.3 mandoc_malloc.3 \ mansearch.3 mchars_alloc.3 tbl.3 $(DESTDIR)$(MANDIR)/man3 cgi-install: man.cgi mkdir -p $(DESTDIR)$(CGIBINDIR) mkdir -p $(DESTDIR)$(HTDOCDIR) $(INSTALL_PROGRAM) man.cgi $(DESTDIR)$(CGIBINDIR) $(INSTALL_DATA) mandoc.css $(DESTDIR)$(HTDOCDIR) catman-install: mandocd catman mkdir -p $(DESTDIR)$(SBINDIR) mkdir -p $(DESTDIR)$(MANDIR)/man8 $(INSTALL_PROGRAM) mandocd $(DESTDIR)$(SBINDIR) $(INSTALL_PROGRAM) catman $(DESTDIR)$(SBINDIR)/$(BINM_CATMAN) $(INSTALL_MAN) mandocd.8 $(DESTDIR)$(MANDIR)/man8 $(INSTALL_MAN) catman.8 $(DESTDIR)$(MANDIR)/man8/$(BINM_CATMAN).8 uninstall: rm -f $(DESTDIR)$(BINDIR)/mandoc rm -f $(DESTDIR)$(BINDIR)/demandoc rm -f $(DESTDIR)$(BINDIR)/$(BINM_SOELIM) rm -f $(DESTDIR)$(BINDIR)/$(BINM_MAN) rm -f $(DESTDIR)$(BINDIR)/$(BINM_APROPOS) rm -f $(DESTDIR)$(BINDIR)/$(BINM_WHATIS) rm -f $(DESTDIR)$(SBINDIR)/$(BINM_MAKEWHATIS) rm -f $(DESTDIR)$(MANDIR)/man1/mandoc.1 rm -f $(DESTDIR)$(MANDIR)/man1/demandoc.1 rm -f $(DESTDIR)$(MANDIR)/man1/$(BINM_SOELIM).1 rm -f $(DESTDIR)$(MANDIR)/man1/$(BINM_MAN).1 rm -f $(DESTDIR)$(MANDIR)/man1/$(BINM_APROPOS).1 rm -f $(DESTDIR)$(MANDIR)/man1/$(BINM_WHATIS).1 rm -f $(DESTDIR)$(MANDIR)/man5/$(MANM_MANCONF).5 rm -f $(DESTDIR)$(MANDIR)/man5/mandoc.db.5 rm -f $(DESTDIR)$(MANDIR)/man7/$(MANM_MAN).7 rm -f $(DESTDIR)$(MANDIR)/man7/$(MANM_MDOC).7 rm -f $(DESTDIR)$(MANDIR)/man7/$(MANM_ROFF).7 rm -f $(DESTDIR)$(MANDIR)/man7/$(MANM_EQN).7 rm -f $(DESTDIR)$(MANDIR)/man7/$(MANM_TBL).7 rm -f $(DESTDIR)$(MANDIR)/man7/mandoc_char.7 rm -f $(DESTDIR)$(MANDIR)/man8/$(BINM_MAKEWHATIS).8 rm -f $(DESTDIR)$(CGIBINDIR)/man.cgi rm -f $(DESTDIR)$(HTDOCDIR)/mandoc.css rm -f $(DESTDIR)$(SBINDIR)/mandocd rm -f $(DESTDIR)$(SBINDIR)/$(BINM_CATMAN) rm -f $(DESTDIR)$(MANDIR)/man8/mandocd.8 rm -f $(DESTDIR)$(MANDIR)/man8/$(BINM_CATMAN).8 rm -f $(DESTDIR)$(LIBDIR)/libmandoc.a rm -f $(DESTDIR)$(MANDIR)/man3/mandoc.3 rm -f $(DESTDIR)$(MANDIR)/man3/mandoc_escape.3 rm -f $(DESTDIR)$(MANDIR)/man3/mandoc_malloc.3 rm -f $(DESTDIR)$(MANDIR)/man3/mansearch.3 rm -f $(DESTDIR)$(MANDIR)/man3/mchars_alloc.3 rm -f $(DESTDIR)$(MANDIR)/man3/tbl.3 rm -f $(DESTDIR)$(INCLUDEDIR)/man.h rm -f $(DESTDIR)$(INCLUDEDIR)/mandoc.h rm -f $(DESTDIR)$(INCLUDEDIR)/mandoc_aux.h rm -f $(DESTDIR)$(INCLUDEDIR)/mdoc.h rm -f $(DESTDIR)$(INCLUDEDIR)/roff.h [ ! -e $(DESTDIR)$(INCLUDEDIR) ] || rmdir $(DESTDIR)$(INCLUDEDIR) regress: all cd regress && ./regress.pl regress-clean: cd regress && ./regress.pl . clean Makefile.local config.h: configure $(TESTSRCS) @echo "$@ is out of date; please run ./configure" @exit 1 libmandoc.a: $(COMPAT_OBJS) $(LIBMANDOC_OBJS) ar rs $@ $(COMPAT_OBJS) $(LIBMANDOC_OBJS) mandoc: $(MAIN_OBJS) libmandoc.a $(CC) -o $@ $(LDFLAGS) $(MAIN_OBJS) libmandoc.a $(LDADD) man.cgi: $(CGI_OBJS) libmandoc.a $(CC) $(STATIC) -o $@ $(LDFLAGS) $(CGI_OBJS) libmandoc.a $(LDADD) mandocd: $(MANDOCD_OBJS) libmandoc.a $(CC) -o $@ $(LDFLAGS) $(MANDOCD_OBJS) libmandoc.a $(LDADD) catman: catman.o libmandoc.a $(CC) -o $@ $(LDFLAGS) catman.o libmandoc.a $(LDADD) demandoc: $(DEMANDOC_OBJS) libmandoc.a $(CC) -o $@ $(LDFLAGS) $(DEMANDOC_OBJS) libmandoc.a $(LDADD) soelim: $(SOELIM_OBJS) $(CC) -o $@ $(LDFLAGS) $(SOELIM_OBJS) # --- maintainer targets --- www-install: www - mkdir -p $(HTDOCDIR)/snapshots $(INSTALL_DATA) $(WWW_MANS) mandoc.css $(HTDOCDIR) - $(INSTALL_DATA) $(WWW_OBJS) $(HTDOCDIR)/snapshots - $(INSTALL_DATA) mdocml.tar.gz \ - $(HTDOCDIR)/snapshots/mdocml-$(VERSION).tar.gz - $(INSTALL_DATA) mdocml.sha256 \ - $(HTDOCDIR)/snapshots/mdocml-$(VERSION).sha256 depend: config.h mkdep -f Makefile.depend $(CFLAGS) $(SRCS) perl -e 'undef $$/; $$_ = <>; s|/usr/include/\S+||g; \ s|\\\n||g; s| +| |g; s| $$||mg; print;' \ Makefile.depend > Makefile.tmp mv Makefile.tmp Makefile.depend regress-distclean: @find regress \ -name '.#*' -o \ -name '*.orig' -o \ -name '*.rej' -o \ -name '*.core' \ -exec rm -i {} \; regress-distcheck: @find regress ! -type d ! -type f @find regress -type f \ ! -path '*/CVS/*' \ ! -name Makefile \ ! -name Makefile.inc \ ! -name '*.in' \ ! -name '*.out_ascii' \ ! -name '*.out_utf8' \ ! -name '*.out_html' \ + ! -name '*.out_markdown' \ ! -name '*.out_lint' \ ! -path regress/regress.pl \ ! -path regress/regress.pl.1 -dist: mdocml.sha256 +dist: mandoc.sha256 -mdocml.sha256: mdocml.tar.gz - sha256 mdocml.tar.gz > $@ +mandoc.sha256: mandoc.tar.gz + sha256 mandoc.tar.gz > $@ -mdocml.tar.gz: $(DISTFILES) +mandoc.tar.gz: $(DISTFILES) ls regress/*/*/*.mandoc_* && exit 1 || true - mkdir -p .dist/mdocml-$(VERSION)/ - $(INSTALL) -m 0644 $(DISTFILES) .dist/mdocml-$(VERSION) - cp -pR regress .dist/mdocml-$(VERSION) - find .dist/mdocml-$(VERSION)/regress \ + mkdir -p .dist/mandoc-$(VERSION)/ + $(INSTALL) -m 0644 $(DISTFILES) .dist/mandoc-$(VERSION) + cp -pR regress .dist/mandoc-$(VERSION) + find .dist/mandoc-$(VERSION)/regress \ -type d -name CVS -print0 | xargs -0 rm -rf - chmod 755 .dist/mdocml-$(VERSION)/configure - ( cd .dist/ && tar zcf ../$@ mdocml-$(VERSION) ) + chmod 755 .dist/mandoc-$(VERSION)/configure + ( cd .dist/ && tar zcf ../$@ mandoc-$(VERSION) ) rm -rf .dist/ # === SUFFIX RULES ===================================================== .SUFFIXES: .1 .3 .5 .7 .8 .h .SUFFIXES: .1.html .3.html .5.html .7.html .8.html .h.html .h.h.html: highlight -I $< > $@ .1.1.html .3.3.html .5.5.html .7.7.html .8.8.html: mandoc ./mandoc -Thtml -Wall,stop \ -Ostyle=mandoc.css,man=%N.%S.html,includes=%I.html $< > $@ Index: vendor/mdocml/dist/Makefile.depend =================================================================== --- vendor/mdocml/dist/Makefile.depend (revision 321806) +++ vendor/mdocml/dist/Makefile.depend (revision 321807) @@ -1,76 +1,78 @@ -att.o: att.c config.h roff.h mdoc.h libmdoc.h +att.o: att.c config.h mandoc.h roff.h mdoc.h libmdoc.h catman.o: catman.c config.h compat_fts.h cgi.o: cgi.c config.h mandoc_aux.h mandoc.h roff.h mdoc.h man.h main.h manconf.h mansearch.h cgi.h chars.o: chars.c config.h mandoc.h mandoc_aux.h mandoc_ohash.h compat_ohash.h libmandoc.h compat_err.o: compat_err.c config.h compat_fts.o: compat_fts.c config.h compat_fts.h compat_getline.o: compat_getline.c config.h compat_getsubopt.o: compat_getsubopt.c config.h compat_isblank.o: compat_isblank.c config.h compat_mkdtemp.o: compat_mkdtemp.c config.h compat_ohash.o: compat_ohash.c config.h compat_ohash.h compat_progname.o: compat_progname.c config.h compat_reallocarray.o: compat_reallocarray.c config.h +compat_recallocarray.o: compat_recallocarray.c config.h compat_strcasestr.o: compat_strcasestr.c config.h compat_stringlist.o: compat_stringlist.c config.h compat_stringlist.h compat_strlcat.o: compat_strlcat.c config.h compat_strlcpy.o: compat_strlcpy.c config.h compat_strsep.o: compat_strsep.c config.h compat_strtonum.o: compat_strtonum.c config.h compat_vasprintf.o: compat_vasprintf.c config.h dba.o: dba.c config.h mandoc_aux.h mandoc_ohash.h compat_ohash.h mansearch.h dba_write.h dba_array.h dba.h dba_array.o: dba_array.c mandoc_aux.h dba_write.h dba_array.h dba_read.o: dba_read.c mandoc_aux.h mansearch.h dba_array.h dba.h dbm.h dba_write.o: dba_write.c config.h dba_write.h dbm.o: dbm.c config.h mansearch.h dbm_map.h dbm.h dbm_map.o: dbm_map.c config.h mansearch.h dbm_map.h dbm.h -demandoc.o: demandoc.c config.h roff.h man.h mdoc.h mandoc.h -eqn.o: eqn.c config.h mandoc.h mandoc_aux.h libmandoc.h libroff.h +demandoc.o: demandoc.c config.h mandoc.h roff.h man.h mdoc.h +eqn.o: eqn.c config.h mandoc_aux.h mandoc.h roff.h libmandoc.h libroff.h eqn_html.o: eqn_html.c config.h mandoc.h out.h html.h eqn_term.o: eqn_term.c config.h mandoc.h out.h term.h html.o: html.c config.h mandoc_aux.h mandoc.h roff.h out.h html.h manconf.h main.h -lib.o: lib.c config.h roff.h mdoc.h libmdoc.h lib.in -main.o: main.c config.h mandoc_aux.h mandoc.h roff.h mdoc.h man.h tag.h main.h manconf.h mansearch.h +lib.o: lib.c config.h mandoc.h roff.h mdoc.h libmdoc.h lib.in +main.o: main.c config.h mandoc_aux.h mandoc.h mandoc_xr.h roff.h mdoc.h man.h tag.h main.h manconf.h mansearch.h man.o: man.c config.h mandoc_aux.h mandoc.h roff.h man.h libmandoc.h roff_int.h libman.h -man_html.o: man_html.c config.h mandoc_aux.h roff.h man.h out.h html.h main.h +man_html.o: man_html.c config.h mandoc_aux.h mandoc.h roff.h man.h out.h html.h main.h man_macro.o: man_macro.c config.h mandoc.h roff.h man.h libmandoc.h roff_int.h libman.h man_term.o: man_term.c config.h mandoc_aux.h mandoc.h roff.h man.h out.h term.h main.h man_validate.o: man_validate.c config.h mandoc_aux.h mandoc.h roff.h man.h libmandoc.h roff_int.h libman.h -mandoc.o: mandoc.c config.h mandoc.h mandoc_aux.h libmandoc.h +mandoc.o: mandoc.c config.h mandoc_aux.h mandoc.h roff.h libmandoc.h mandoc_aux.o: mandoc_aux.c config.h mandoc.h mandoc_aux.h mandoc_ohash.o: mandoc_ohash.c mandoc_aux.h mandoc_ohash.h compat_ohash.h +mandoc_xr.o: mandoc_xr.c mandoc_aux.h mandoc_ohash.h compat_ohash.h mandoc_xr.h mandocd.o: mandocd.c config.h mandoc.h roff.h mdoc.h man.h main.h manconf.h mandocdb.o: mandocdb.c config.h compat_fts.h mandoc_aux.h mandoc_ohash.h compat_ohash.h mandoc.h roff.h mdoc.h man.h manconf.h mansearch.h dba_array.h dba.h manpath.o: manpath.c config.h mandoc_aux.h manconf.h mansearch.o: mansearch.c config.h mandoc.h mandoc_aux.h mandoc_ohash.h compat_ohash.h manconf.h mansearch.h dbm.h mdoc.o: mdoc.c config.h mandoc_aux.h mandoc.h roff.h mdoc.h libmandoc.h roff_int.h libmdoc.h mdoc_argv.o: mdoc_argv.c config.h mandoc_aux.h mandoc.h roff.h mdoc.h libmandoc.h roff_int.h libmdoc.h -mdoc_html.o: mdoc_html.c config.h mandoc_aux.h roff.h mdoc.h out.h html.h main.h +mdoc_html.o: mdoc_html.c config.h mandoc_aux.h mandoc.h roff.h mdoc.h out.h html.h main.h mdoc_macro.o: mdoc_macro.c config.h mandoc.h roff.h mdoc.h libmandoc.h roff_int.h libmdoc.h mdoc_man.o: mdoc_man.c config.h mandoc_aux.h mandoc.h roff.h mdoc.h man.h out.h main.h mdoc_markdown.o: mdoc_markdown.c mandoc_aux.h mandoc.h roff.h mdoc.h main.h mdoc_state.o: mdoc_state.c mandoc.h roff.h mdoc.h libmandoc.h libmdoc.h mdoc_term.o: mdoc_term.c config.h mandoc_aux.h mandoc.h roff.h mdoc.h out.h term.h tag.h main.h -mdoc_validate.o: mdoc_validate.c config.h mandoc_aux.h mandoc.h roff.h mdoc.h libmandoc.h roff_int.h libmdoc.h +mdoc_validate.o: mdoc_validate.c config.h mandoc_aux.h mandoc.h mandoc_xr.h roff.h mdoc.h libmandoc.h roff_int.h libmdoc.h msec.o: msec.c config.h mandoc.h libmandoc.h msec.in out.o: out.c config.h mandoc_aux.h mandoc.h out.h preconv.o: preconv.c config.h mandoc.h libmandoc.h -read.o: read.c config.h mandoc_aux.h mandoc.h roff.h mdoc.h man.h libmandoc.h roff_int.h +read.o: read.c config.h mandoc_aux.h mandoc.h roff.h mdoc.h man.h libmandoc.h roff.o: roff.c config.h mandoc.h mandoc_aux.h mandoc_ohash.h compat_ohash.h roff.h libmandoc.h roff_int.h libroff.h predefs.in -roff_html.o: roff_html.c roff.h out.h html.h -roff_term.o: roff_term.c roff.h out.h term.h +roff_html.o: roff_html.c mandoc.h roff.h out.h html.h +roff_term.o: roff_term.c mandoc.h roff.h out.h term.h roff_validate.o: roff_validate.c mandoc.h roff.h libmandoc.h roff_int.h soelim.o: soelim.c config.h compat_stringlist.h -st.o: st.c config.h roff.h mdoc.h libmdoc.h st.in +st.o: st.c config.h mandoc.h roff.h mdoc.h libmdoc.h st.in tag.o: tag.c config.h mandoc_aux.h mandoc_ohash.h compat_ohash.h tag.h tbl.o: tbl.c config.h mandoc.h mandoc_aux.h libmandoc.h libroff.h tbl_data.o: tbl_data.c config.h mandoc.h mandoc_aux.h libmandoc.h libroff.h tbl_html.o: tbl_html.c config.h mandoc.h out.h html.h tbl_layout.o: tbl_layout.c config.h mandoc.h mandoc_aux.h libmandoc.h libroff.h tbl_opts.o: tbl_opts.c config.h mandoc.h libmandoc.h libroff.h tbl_term.o: tbl_term.c config.h mandoc.h out.h term.h term.o: term.c config.h mandoc.h mandoc_aux.h out.h term.h main.h term_ascii.o: term_ascii.c config.h mandoc.h mandoc_aux.h out.h term.h manconf.h main.h term_ps.o: term_ps.c config.h mandoc_aux.h out.h term.h manconf.h main.h term_tab.o: term_tab.c mandoc_aux.h out.h term.h tree.o: tree.c config.h mandoc.h roff.h mdoc.h man.h main.h Index: vendor/mdocml/dist/NEWS =================================================================== --- vendor/mdocml/dist/NEWS (revision 321806) +++ vendor/mdocml/dist/NEWS (revision 321807) @@ -1,892 +1,978 @@ -$Id: NEWS,v 1.21 2017/02/21 00:37:03 schwarze Exp $ +$Id: NEWS,v 1.26 2017/07/28 14:57:56 schwarze Exp $ -This file lists the most important changes in the mdocml.bsd.lv distribution. +This file lists the most important changes in the mandoc.bsd.lv distribution. +Changes in version 1.14.2, released on July 28, 2017 + + --- MAJOR NEW FEATURES --- + * New mdoc(7) -Tmarkdown output mode. + * For -Thtml, implement internal hyperlinks pointing to authoritative + definitions of various syntax elements, similar to the ctags(1)-like + less(1) :t internal searching in terminal mode. + * Provide a superset of the functionality of the former mdoclint(1) + utility and a new -Wstyle message level with several new messages, + including validity checking of .Xr cross references. + * tbl(7): Implement automatic line breaking inside individual table + cells, and several other formatting improvements. + * eqn(7): Complete rewrite of the lexer, resulting in several bugfixes. + * Continue parser unification, in particular allowing generation + of syntax tree nodes on the roff(7) level, allowing implementation + of many additional roff requests. + --- REMOVED FUNCTIONALITY --- + * Delete the manpage(1) utility. It was never enabled in any release. + * Delete the -Txhtml command line option. It has been an obsolete + alias for the -Thtml output mode for more than two years. + --- MINOR NEW FEATURES --- + * -Tlint now puts parser messages on stdout instead of stderr, + making commands like "man -l -Tlint *.1" useful. + * mdoc(7): Various .Lk formatting improvements. + * mdoc(7) -Thtml: Better CSS for .Bl lists. + * man(7): Implement the .MT/.ME block macro (mailto hyperlink). + * man(7): Implement the .DT macro (restore default tab positions). + * man(7): Improved support for manuals generated with reStructuredText + by partial support for the \n[an-margin] number register. + * man(7) -Thtml: Support deep linking to .SH and .SS headers. + * tbl(7): Implement the "allbox" table option. + * tbl(7): Implement the column spacing and the 'w' (minimum column + width) layout modifiers. + * tbl(7): Significant improvements of the manual page. + * eqn(7): Much improved font selection, including recognition of + well-known function names, and a few other formatting improvements. + * eqn(7) -Thtml: Use and in addition to . + * roff(7): Implement the .ce (centering), .mc (margin character), + .rj (right justify), .ta (define tab stops), .ti (temporary indent), + .als (macro alias), .ec and .eo (escape character control), + .po (page offset), and .rn (macro rename) requests. + * roff(7) .am: Implement appending to mdoc(7) and man(7) macros. + * roff(7): implement the \h (horizontol motion), \l (horizontal + line drawing), and \p (break output line) escape sequences, + and also several additional character escape sequences. + * roff(7): Implement the 'd' conditional (macro or string defined). + * man.cgi(8) now uses pledge(2), too. + * regress.pl(1): simpler user interface, better summary output, + simpler code, and no more recursion. + --- THANKS TO --- + * Anthony Bentley (OpenBSD) for the implementation of .MT/.ME, + reports of many bugs and missing features, and suggestions + for a number of feature and documentation improvements. + * Sebastien Marie (OpenBSD) for two source code patches and + for some useful discussions. + * Florian Obser (OpenBSD) for a bugfix patch and a bug report. + * Jonathan Gray (OpenBSD) for several bug reports from afl(1) + and several more from static analysis tools. + * Theo Buehler (OpenBSD) for several bug reports, most from afl(1). + * Jason McIntyre (OpenBSD) for many useful discussions about a + wide variety of topics, lots of continuous testing, a number of + bug reports, and some suggestions for messages and documentation. + * Thomas Klausner (NetBSD) for lots of help while migrating + mdoclint(1) functionality to mandoc -Tlint, for suggesting + several useful new messages, and for release testing. + * Reyk Floeter (OpenBSD) and Vsevolod Stakhov (FreeBSD) for + suggesting a markdown output mode. + * Thomas Guettler for suggesting -Thtml internal hyperlinks. + * Yuri Pankov (Illumos) for inspiring new warning messages and + for extensive release testing. + * Anton Lindqvist and TJ Townsend (both OpenBSD) and Jan Stary + for multiple bug reports. + * Leah Neukirchen (Void Linux) for bug reports and release testing. + * Michael Stapelberg (Debian) for suggesting feature improvements + and for release testing. + * Martin Natano and Theo de Raadt (both OpenBSD), Andreas Voegele, + Gabriel Guzman, Gonzalo Tornaria, Markus Waldeck, and Raf Czlonka + for bug reports. + * Antoine Jacoutot (OpenBSD) and Steffen Nurpmeso for suggesting + feature improvements. + * Dag-Erling Smoergrav (FreeBSD) for inspiring new warning messages. + * Ted Unangst and Marc Espie (OpenBSD) for providing useful ideas. + * Svyatoslav Mishyn (Crux Linux) for release testing. + * Carsten Kunze (Heirloom roff) for help keeping mandoc and groff + compatible and for committing some of my patches to groff. + Changes in version 1.14.1, released on February 21, 2017 --- MAJOR NEW FEATURES --- * apropos(1): Reimplement complete semantic search functionality without the dependency on SQLite3, using only POSIX APIs. This comes with a completely new mandoc.db(5) file format. * man(1): Support more than one tag entry for the same search term, plus some minor improvements to the less(1) :t support. * -Thtml: Use real macro names for CSS classes. Systematic cleanup of and many improvements to mandoc.css. * -Thtml: Produce human readable HTML code by using indentation and better line breaks. Improve various HTML elements, and trim several useless ones. * New catman(8) utility, still somewhat experimental. * Now includes a portable version of the OpenBSD mandoc regression suite, see regress/regress.pl.1 for details. --- REMOVED FUNCTIONALITY --- * Operating systems that don't provide mmap(3) are no longer supported. * Drop support for manpath(1). Even if your system has manpath(1), it is simpler to use MANPATH_DEFAULT in configure.local for operating system defaults, man.conf(5) for machine-specific modifications, and ${MANPATH}, -m, and -M for user preferences than to bother with the complexity of manpath(1). * makewhatis(8) -p: No longer warn about missing MLINKS since these are no longer needed for anything. --- MINOR NEW FEATURES --- * mdoc(7): Warn about invalid punctuation and content below NAME. * mdoc(7): Warn about .Xr lacking the second argument (section). * mdoc(7): Warn about violations of the rule "new sentence, new line". * roff(7): Warn about trailing whitespace at the end of comments. * mdoc(7): Improve rendering of double quotes. * mdoc(7): Always do text production in the validator, never in the formatters. Cleaner, simpler, shorter, helps NetBSD apropos(1) and also makes -Ttree output more useful. * -Ttree: Show metadata and some additional node flags. New -Onoval output option to show the unvalidated tree. --- RELIABILITY BUGFIXES --- * man(1): Make "man -l" work with standard input from a pipe or file, as long as standard output is a terminal. * man(7): Fix out of bounds read access if a text node immediately preceded the first .SH header. * mdoc(7): Fix out of bounds read access for .Bl without a type but with a width. * mdoc(7): Fix out of bounds read access for .Bl -column starting with a tab character instead of a child .It macro. * mdoc(7): Fix syntax tree corruption leading to segfaults caused by stray block end macros in nested blocks of mismatching type. * man(1): Fix NULL dereference when the first of multiple pages shown was preformatted. * mdoc(7): Fix syntax tree corruption leading to NULL dereference caused by partial implicit macros inside .Bl -column table cells. * mdoc(7): Fix syntax tree corruption leading to NULL dereference for macro sequences like .Bl .Bl .It Bo .El .It. * mdoc(7): Fix syntax tree corruption leading to NULL dereference caused by .Ta following a nested .Bl -column breaking another block. * mdoc(7): Fix syntax tree corruption sometimes leading to NULL dereference caused by indirectly broken .Nd or .Nm blocks. * mdoc(7) -Thtml: Fix a NULL dereference for .Bl -column with 0 columns. * mdoc(7): Fix NULL dereference in some specific cases of a block-end macro calling another block-end macro. * mdoc(7): Fix NULL dereference if the only child of the head of the first .Sh was an empty in-line macro. * eqn(7): Fix NULL dereference in the terminal formatter for empty matrices and empty square roots. * mdoc(7): Fix an assertion failure for a .Bd without a type that breaks another block. * mdoc(7): Fix an assertion failure that happened for some .Bl -column lists containing a column width of "-4n", "-3n", or "-2n". * mdoc(7): Fix an assertion failure caused by .Bl -column without .It but containing eqn(7) or tbl(7) code. * roff(7): Fix an assertion failure caused by \z\[u00FF] with -Tps/-Tpdf. * roff(7): Fix an assertion failures caused by whitespace inside \o'' (overstrike) sequences. * -Thtml: Fix an assertion failure caused by -Oman or -Oincludes of excessive length. --- PORTABILITY IMPROVEMENTS --- * man(1): Do not mix stdio narrow and wide stream orientation on stdout, which could cause output corruption on glibc. * mandoc(1): Autodetect a suitable locale for -Tutf8 mode. * ./configure: Autodetect whether PATH_MAX and O_DIRECTORY are defined. * ./configure: Autodetect if nanosleep(3) needs -lrt. * ./configure: Provide an ${LN} configuration variable. * ./configure: Put compiler arguments that may contain -l at the end. --- MINOR BUGFIXES --- * mdoc(7): Fix SYNOPSIS output if the first child of .Nm is a macro. * mdoc(7) -Thtml: Improve formatting of .Bl -tag with short tags. * man(7) -Thtml: Preserve whitespace in .nf (nofill) mode. * mandoc(1): Error out on invalid output options on the command line. --- STRUCTURAL CHANGES, no functional change --- * Redesign part of the mandoc_html(3) interfaces, making them much easier to use and reducing the amount of code by a few hundred lines. --- THANKS TO --- * Michael Stapelberg (Debian) for designing the new mandocd(8) and parts of the new catman(8), for release testing, and for a number of patches and bug reports. * Baptiste Daroussin (FreeBSD) for profiling the new makewhatis(8) implementation and suggesting an algorithmic improvement which more than doubled performance, and for a few bug reports. * Ed Maste (FreeBSD) for an important patch improving reproducibility of builds in makewhatis(8), and for a few bug reports. * Theo Buehler (OpenBSD) for almost twenty important bug reports, most of them found by systematic afl(1) fuzzing. * Benny Lofgren, David Dahlberg, and in particular Vadim Zhukov for crucial help in getting .Bl -tag CSS formatting fixed. * Svyatoslav Mishyn (Crux Linux) for an initial version of the patch to autodetect a suitable locale for -Tutf8 mode and for release testing. * Jason McIntyre (OpenBSD) for multiple useful discussions and a number of bug reports. * Sevan Janiyan (NetBSD) for extensive release testing and multiple bug reports. * Thomas Klausner and Christos Zoulas (NetBSD), Yuri Pankov (illumos), and Leah Neukirchen (Void Linux) for release testing and bug reports. * Ulrich Spoerlein (FreeBSD) for release testing. * Alexander Bluhm, Andrew Fresh, Antoine Jacoutot, Antony Bentley, Christian Weisgerber, Jonathan Gray, Marc Espie, Martijn van Duren, Stuart Henderson, Ted Unangst, Theo de Raadt (OpenBSD), Abhinav Upadhyay, Kamil Rytarowski (NetBSD), Aaron M. Ucko, Bdale Garbee, Reiner Herrmann, Shane Kerr (Debian), Daniel Sabogal (Alpine Linux), Carsten Kunze (Heirloom roff), Kristaps Dzonsons (bsd.lv), Anton Lindqvist, Jan Stary, Jeremy A. Mates, Mark Patruck, Pavan Maddamsetti, Sean Levy , and Tiago Silva for bug reports. * Brent Cook, Marc Espie, Philip Guenther, Todd Miller (OpenBSD) and Markus Waldeck for useful discussions. * And as usual, OpenCSW for providing me with a Solaris 9/10/11 testing environment. Changes in version 1.13.4, released on July 14, 2016 --- MAJOR NEW FEATURES --- * man.conf(5): Design and implement a simpler configuration file format. * man(1): Leverage less(1) -T and :t in a way resembling ctags(1) to jump to the definitions of various terms inside manual pages. * soelim(1): New implementation by Baptiste Daroussin. * privilege limitation: Use OpenBSD pledge(2) or OS X sandbox_init(3) when available. * man.cgi(8): Support short URIs like http://man.openbsd.org/mdoc . * mandoc.css: Use one unified stylesheet rather than three different ones. --- MAJOR FUNCTIONALLY RELEVANT BUGFIXES --- * mdoc(7): Fix multiple aspects of SYNOPSIS .Nm formatting. * man(1): Fix process group handling, avoiding unclean shutdowns. --- PORTABILITY IMPROVEMENTS --- * Correctly use the ohash(3) compatibility implementation even when building without SQLite support. * Add compat glue for building on Solaris 9 and 10. * Let ./configure select a supported RE syntax for word boundaries. * Support LDFLAGS, to be used for example for hardening options. * Avoid mixing putchar(3) and putwchar(3) on the same file descriptor, it resulted in output corruption on some platforms. * Avoid reusing va_lists, use va_copy(3) for better portability. * Do not hardcode the path to the more(1) program. --- MINOR NEW FEATURES --- * roff(7): Implement \n(.$ (number of macro arguments). * roff(7): Fully implement \z (do not advance cursor). * roff(7): Implement the `r' conditional (register exists). * roff(7): Implement \\$* (interpolate all arguments). * roff(7): Parse and ignore \, and \/ (italic corrections). * When there is no -m, no -M, no MANPATH and no /etc/man.conf, fall back to /usr/share/man:/usr/X11R6/man:/usr/local/man. * man(1): Give manuals in purely numerical sections priority over manuals of the same name in sections with an alphabetical suffix. * man.cgi(8): Support "header.html" and "footer.html". * man.cgi(8): Set the "autofocus" attribute on the query text box. * man.cgi(8): Simplify the search form, drop two useless buttons. * man.cgi(8): Delete the pseudo-manpath "mandoc", assume that apropos(1) and man.cgi(8) are installed in the default manpath. --- RELIABILITY BUGFIXES --- * mdoc(7): Avoid a use after free and an assertion failure when nodes are deleted during validation. * mdoc(7): Avoid a NULL pointer access when .Bd has no arguments. * mdoc(7): Avoid a NULL pointer access triggered by mismatching end macros. * mdoc(7): Avoid an assertion when .Fo has no argument. * mdoc(7): Avoid an assertion when .Ta occurs in .Bl -column. * mdoc(7): Avoid an assertion when a body gets broken and has a tail. * roff(7): Avoid an assertion caused by blanks inside \o. * roff(7): Make .so links to gziped manuals work without mandoc.db(5). * tbl(7): Avoid a use after free when the last line of a layout is empty. * eqn(7): Avoid an infinite loop caused by recursive "define". * makewhatis(8): Avoid a segfault caused by unusual directory structures. * Fix handling of leading, trailing, and double colons in MANPATH and -m. --- MINOR BUGFIXES --- * mdoc(7): Put arguments to end macros of broken partial explicit blocks inside the breaking block. * mdoc(7): Let .Dv force normal font. * mdoc(7): Make trailing whitespace significant in .Bl -tag widths. * mdoc(7): Fix macro interpretation around tabs in .Bl -column. * man(7): Use the default width for .RS without arguments. * man(7): On a new RS nesting level, the saved width starts from the default width, not from the saved width of the previous level. * man(7): Allow .PD in next-line scope. * man(7): Improve handling of empty .HP. * man(7): Improve formatting of .br and .sp inside .HP. * man(7): Do not mistreat empty arguments to font alternating macros as vertical spacing requests. * man(7): Allow fill mode changes in tagged paragraph next-line scope. * man(7): Fix minor bugs in block rewinding and simplify the related code. * man(7): Add missing line breaks before subsection headers. * man(7): Give section and subsection headers hanging indentation. * man(7): Make trailing whitespace significant in .TP widths. * roff(7): Don't allow breaking the output line after hyphens that immediately follow escape sequences. * roff(7): Ignore blank characters at the beginning of conditional blocks. * roff(7): Escape breakable hyphens only after handling input line traps. * roff(7): Reject \[uD800] to \[uDFFF] (surrogates) in the parser. * tbl(7): Allow more than one data field after T} on the same input line. * terminal output: Apply bold and italic to non-ASCII Unicode codepoints. * terminal output: Improve rounding rules for horizontal scaling widths. * HTML output: Render ASCII_NBRSP as " ", not "-". * man(1): Do not match the first part of a name if it continues with a dot. * man(1): Keep working even if the current directory is unusable. * man(1): Better error message when $PAGER is invalid. * makewhatis(8): Improve handling of .Va and .Vt macros. * apropos(1): Print "nothing appropriate" to stderr when appropriate. * apropos(1): Abort with a useful error message when elementary database operations like preparing queries or binding variables fail. --- STRUCTURAL CHANGES, no functional change --- * mdoc(7) and man(7): Unified data structures struct roff_node etc. * mdoc(7) and man(7): Unified node handling library in roff.c. * mdoc(7) and man(7): Seperate validation phase from parsing. * roff(7): Major character table cleanup. * Link with libz rather than forking gunzip(1). --- THANKS TO --- * Baptiste Daroussin (FreeBSD) for the new soelim(1) and for release testing. * Anthony Bentley (OpenBSD) for unifying mandoc.css, two nice patches for man.cgi(8), some documentation patches, some bug reports, and various useful discussions. * Todd Miller (OpenBSD) for lots of help with process group and signal handling, a few patches, some bug reports and some useful discussions. * Jonathan Gray (OpenBSD) for yet more testing with afl(1) again resulting in more than half a dozen important bug reports. * Svyatoslav Mishyn (Crux Linux) for some patches, several bug reports, and extensive release testing. * Leah Neukirchen (Void Linux) for a number of compatibility patches and suggestions and several bug reports. * Christos Zoulas (NetBSD) for a bug fix patch and some useful suggestions for cleanup. * Florian Obser (OpenBSD) for a bugfix patch and some bug reports. * Sevan Janiyan for help with Solaris compatibility and release testing on many platforms. * Jan Holzhueter and OpenCSW in general for help with Solaris compatibility, and for providing me with a Solaris 9/10/11 testing environment. * Michael McConville (OpenBSD) for some simple cleanup patches. * Thomas Klausner (NetBSD) for some bug reports and release testing. * Christian Weisgerber, Dmitrij Czarkoff, Igor Sobrado, Ken Westerback, Marc Espie, Mike Belopuhov, Rafael Neves, Ted Unangst, Tim van der Molen, Theo Buehler, Theo de Raadt (OpenBSD), Kurt Jaeger, Dag Erling Smoergrav (FreeBSD), Joerg Sonnenberger (NetBSD), Carsten Kunze (Heirloom troff), Daniel Levai, Fabian Raetz, Jan Stary, Jean-Yves Migeon, Lorenzo Beretta, Markus Waldeck, Maxim Belooussov, Michael Reed, Peter Bray, and Serguey Parkhomovsky for bug reports and feature suggestions. * Alexander Hall, Andrew Fresh, Antoine Jacoutot, Doug Hogan, Jason McIntyre, Jasper Lievisse Adriaanse, Kent Spillner, Nicholas Marriott, Peter Hessler, Sebastien Marie, Stefan Sperling, and Theo de Raadt (OpenBSD) for helpful discussions and feedback. Changes in version 1.13.3, released on March 13, 2015 --- MAJOR NEW FEATURES --- * When a manual is missing from an outdated database, let man(1) show it anyway, using a KISS file system lookup as a fallback. * Use this to always provide man(1), even without database support. * Fatal errors no longer exist. If a file can be opened, mandoc will produce some output; at worst, the output may be almost empty. * New -Wunsupp message level. --- POTENTIONALLY SECURITY RELEVANT BUGFIXES --- * Fix a potential write buffer overrun on incomplete string conditionals. - http://mdocml.bsd.lv/cgi-bin/cvsweb/roff.c#rev1.241 + http://mandoc.bsd.lv/cgi-bin/cvsweb/roff.c#rev1.241 * Fix a potential write buffer overrun on backslash at EOF in a conditional. - http://mdocml.bsd.lv/cgi-bin/cvsweb/roff.c#rev1.247 + http://mandoc.bsd.lv/cgi-bin/cvsweb/roff.c#rev1.247 * Fix a use after free sometimes hit when validation deletes a block. - http://mdocml.bsd.lv/cgi-bin/cvsweb/mdoc_macro.c#rev1.180 + http://mandoc.bsd.lv/cgi-bin/cvsweb/mdoc_macro.c#rev1.180 --- MAJOR FUNCTIONALLY RELEVANT BUGFIXES --- * Let man(1) show manuals for the current architecture by default, and support the MACHINE environment variable. * Fix the man(1) and apropos(1) -m option, it didn't work at all. * Do not spawn a pager when there is no output. * In makewhatis(8), fix detection of hardlinked manuals on platforms having padding in struct inodev (typically 64bit platforms). --- PORTABILITY IMPROVEMENTS --- * Ignore O_CLOEXEC when the operating system doesn't provide it. * Avoid forward reference to enum type which violates ISO C99. * Support homebrew-style linking on Mac OS X. --- MINOR NEW FEATURES --- * lookup: Accept digit+letter and "n" as section names in man(1), and consistently handle digit+letter in file name extensions. * lookup: Speed up -s/-S by using the "mlinks" rather than the "keys" table. * output: Insert horizontal lines between formatted manual pages. * input: New stricter and more resilient UTF-8 parser. * mdoc(7): Refactor block rewinding for simpler and more robust parsing. * man(7): Use the -Ios option when .TH has less than four arguments. * tbl(7): Implement the "center" option. * tbl(7): New option and format parsers, improved in many respects. * roff(7): Basic implementation of the \o escape sequence (overstrike), and improved rendering of overstrikes in PostScript and PDF output. * Message improvements, in particular for, but not restricted to, eqn(7), tbl(7), and wrong numbers of arguments in mdoc(7) and man(7), in various cases also improving output generated by invalid input. * Delete the -V option. It serves no purpose but keeps confusing people. * gmdiff: Minimal support for Heirloom roff. --- RELIABILITY BUGFIXES --- * tbl(7): Fix a read buffer overrun on 'f' at EOL in a layout. * roff(7): Fix a read buffer overrun on incomplete numerical conditions. * mdoc(7): Fix a NULL pointer access on .Nd followed by an explicit block. * mdoc(7): Fix a NULL pointer access on .It Xo without .Xc. * mdoc(7): Fix a NULL pointer access on .Eo without a tail. * mdoc(7): Fix a NULL pointer access in the validation of empty .St macros. * man(7)/tbl(7): Fix a NULL pointer access on .TS right after .TP. * tbl(7): Fix a NULL pointer access on layout lines without any cells. * eqn(7): Fix NULL pointer accesses in the terminal formatter. * roff(7): Fix a NULL pointer access on trailing \s-/\s+ without an argument. * gz: Fix a potential NULL pointer access after waitpid() failure. * roff(7): Don't let the modulo operator divide by zero. * input: Fix an assertion failure on certain invalid UTF-8 input. * terminal output: Allow arbitrary depth of the font stack (assertion fix). * mdoc(7): Fix assertion failures and endless loops on invalid block closing. * mdoc(7): Fix an assertion failure on .Bl .Sm not followed by .It. * mdoc(7): Fix an assertion failure on .Bl -column ... .El .Ta. * tbl(7): Fix assertion failures by macros inside table data, but do not throw away the macro arguments. * Prevent certain kinds of unreasonable input from producing excessive output, in one case caused by unsigned integer underflow. * Fix a potential memory leak in makewhatis(8) on very long filenames. --- MINOR BUGFIXES --- * mdoc(7): Fix parsing of badly nested blocks with multiple identical blocks. * mdoc(7): Support negative indentations for displays and lists. * mdoc(7): Don't mistreat negative .sp arguments as large positive ones. * mdoc(7): Some spacing fixes for .Eo/.Ec. * man(7): Support negative horizontal widths. * man(7): Do not print out invalid .IP arguments. * man(7): Correctly handle scaling units after .PD. * man(7): Support .RE with an argument. * man(7): Fix restoring indentation after .RS with large negative arguments. * tbl(7): Prevent tables from breaking the filling of preceding text. * tbl(7): Fix vertical spacing at the beginning of tables. * tbl(7): Parser and formatter fixes for line drawing and font modifiers. * tbl(7): Correct handling of blank data lines. * eqn(7): Add sometimes missing whitespace before equation output. * roff(7): Fix vertical scaling, most of it was wrong. * roff(7): Slightly improve \w width measurements. * roff(7): Accept the historic aliases \s10 to \s39 for \s(10 to \s(39. * roff(7): Correctly escape quotes when expanding macro arguments. * roff(7): Correctly handle scaling units in numerical expressions, and some other improvements to the parsing of numerical expressions. * roff(7): Three minor fixes with respect to evaluation of conditionals. * roff(7): Let .it accept numerical expressions, not just constants. * mandoc_char(7): Correct some character names and renderings. * If earlier files set a non-zero exit status, never reset it to zero. --- THANKS TO --- * Jonathan Gray (OpenBSD) for yet more testing with afl (the American Fuzzy Lop security fuzzer), again resulting in many bug reports. * Theo de Raadt (OpenBSD) for suggesting the main new feature (man(1) file system lookup) and for reporting an important bug (pager without output). * Theo Buehler for an important bug report (-s/-S slowness) and for proposing a nice new feature (lines between pages). * Jason McIntyre for an important bug report (hardlink detection) and multiple documentation patches. * Pascal Stumpf (OpenBSD) and Alessandro de Laurenzis for important bug reports (architecture and man -m, respectively). * Thomas Klausner (NetBSD) for proposing a new feature (man(7) -Ios), a bug report, and release testing. * Anthony Bentley, Daniel Dickman, Ted Unangst (OpenBSD) and Kristaps Dzonsons (bsd.lv) for source code patches and bug reports. * Christian Weisgerber (OpenBSD) for more than half a dozen bug reports. * Carsten Kunze (Heirloom troff) for bug reports and release testing. * Antoine Jacoutot (OpenBSD) for release testing. * Alexis Hildebrandt (Homebrew), Baptiste Daroussin (FreeBSD), Jonathan Perkin (SmartOS), Pedro Giffuni (FreeBSD), Svyatoslav Mishyn (Crux Linux), Ulrich Spoerlein (FreeBSD), Jan Stary, Patrick Keshishian, Sebastien Marie, and Steffen Nurpmeso for bug reports. Changes in version 1.13.2, released on December 13, 2014 --- MAJOR NEW FEATURES --- * Include an implementation of man(1), the manual page viewer. * Unified set of command line option, each one supported by all command names, including new options -a (format all), -c (no pager), -h (synopsis only), and -w (list filenames). * Support the MANPAGER and PAGER environment variables. * Support gzip'ed manuals by the whole toolset, even as .so targets. * Support UTF-8 and Latin-1 input by the whole toolset, delete preconv(1). * Switch the default output mode from -Tascii to -Tlocale. * Improve -Tascii output for Unicode escape sequences. * Let the -Thtml output mode produce polyglot HTML5. * Many improvements for eqn(7), in particular in-line equations, MathML output in -Thtml mode, and much improved terminal formatting. --- PORTABILITY IMPROVEMENTS --- * Change the build sequence to the usual ./configure; make; make install. * Support ./configure.local for build customizations. * Autodetect wchar, sqlite3, and manpath support. * Provide a fallback version of fts(3) for systems lacking it. * Support choosing alternative binary and manual names. --- MINOR NEW FEATURES --- * Rudimentary implementation of the e, x, and z tbl(7) layout modifiers to equalize, maximize, and ignore the width of columns. * Implement font modifiers in tbl(7) layouts. * Allow comma-separated options in the tbl(7) options line. * Parse and ignore the .pl (page length) roff(7) request. * Implement .An -[no]split for the mdoc(7) -Thtml output mode. * Support bold italic font in PostScript and PDF output. * Warn about commas in function arguments and parentheses in function names. * Warn about botched .Xr ordering and punctuation below SEE ALSO. * Warn about AUTHORS sections without .An macros. * Warn about attempts to call non-callable macros. * New developer documentation manual page mandoc_headers(3). --- BUGFIXES --- * Fix read buffer overrun sometimes triggered by trailing whitespace. * Fix read buffer overrun triggered by certain invalid \H sequences. * Fix NULL pointer access triggered by .Bl without any arguments. * Fix NULL pointer access triggered by .It Nm Fo without .Fc. * Fix NULL pointer access triggered by .Sh Xo .Sh without .Xc. * Fix NULL pointer access triggered by missing .Nm. * Fix an assertion triggered by .It right after .El. * Fix an assertion triggered by .Ec without preceding .Eo. * Fix an assertion triggered by .Sm or .Db with multiple arguments. * Fix assertion failures triggered by very large width arguments. * Fix a division by zero in the roff(7) parser. * Prevent negative arguments to .ll from causing integer underflow. * Correctly autodetect source format even when .Dd is preceded by .ll. * Multiple fixes with respect to .Bd and .Bl -offset and -width. * Many bugfixes with respect to scaling units. * Multiple fixes with respect to delimiter handling by in-line macros. * Multiple fixes with respect to .Pf. * Make \c work properly in no-fill mode. * Stricter syntax checking of Unicode character names. --- THANKS TO --- * Kristaps Dzonsons for rewriting the eqn(7) parser, implementing HTML5 and MathML output, and various other code contributions. * Jonathan Gray (OpenBSD) for extensive testing with afl (the American Fuzzy Lop security fuzzer) resulting in many bug reports. * Anthony Bentley (OpenBSD), Baptiste Daroussin (FreeBSD), Daniel Dickman, Doug Hogan, Jason McIntyre, Theo de Raadt (OpenBSD), and Martin Natano for source code patches. * Carsten Kunze (Heirloom troff), Daniel Levai (Slackware), Garrett D'Amore (illumos), Giovanni Becchis, Matthew Dempsky, Stuart Henderson, Ted Unangst, Todd Miller (OpenBSD), Thomas Klausner (NetBSD), Ulrich Spoerlein (FreeBSD), Justin Haynes, Marcus Merighi, Sebastien Marie, Steffen Nurpmeso and Theo Buehler for bug reports. Changes in version 1.13.1, released on August 10, 2014 --- MAJOR NEW FEATURES --- * A complete apropos(1)/makewhatis(8)/man.cgi(8) suite based on SQLite3 is now included. * The roff(7) parser now provides an almost complete implementation of numerical expressions. * Warning and error messages have been improved in many ways. Almost all fatal errors were downgraded to normal errors and some even to warnings. Almost all messages now mention the macro where the issue is detected and many indicate the workaround employed. The mandoc(1) manual now includes a list explaining all messages. --- MINOR NEW FEATURES --- * The roff(7) parser now supports the .ami (append to macro with indirectly specified name), .as (append to user-defined string), .dei (define macro with indirectly specified name), .ll (line length), and .rr (remove register) requests. * The roff(7) parser now supports string comparison and numerical conditionals in the .if and .ie requests. * The roff parser now fully supports the \B (validate numerical expression) and partially supports the \w (measure text width) escape sequences. * The terminal formatter now supports the \: (optional line break) escape sequence. * The roff parser now supports expansion of user-defined strings involving indirect references. * The roff(7) parser now handles some pre-defined read-only number registers that occur in the pod2man(1) preamble. * For backward compatibility, the mdoc(7) parser and formatters now support the obsolete macros .En, .Es, .Fr, and .Ot. * The mdoc(7) formatter non partially supports .Bd -centered. * tbl(7) now handles leading and trailing vertical lines. * The build system now provides fallback versions of strcasestr(3) and strsep(3) for systems lacking them. * The mdoc(7) manual now explains how various standards supported by the .St macro are related to each other. --- BUGFIXES --- * In the roff(7) parser, several bugs were fixed with respect to closing conditional blocks on macro lines. * Parsing of roff(7) identifiers and escape sequences was improved in multiple respects. * In the mdoc(7) parser, the handling of defective document prologues was improved in multiple ways. * The mdoc(7) parser no longer skips content before the first section header, and it no longer deletes non-.% content from .Rs blocks. * In the mdoc(7) parser, a crash was fixed related to weird .Sh headers. * In the mdoc(7) parser, handling of .Sm with missing or invalid arguments was corrected. * In the mdoc(7) parser, trailing punctuation at the end of partial implicit macros no longer triggers end-of-sentence spacing. * In the terminal formatter, two crashes were fixed: one triggered by excessive indentation and another by excessively long .Nm arguments. * In the terminal formatter, a floating point rounding bug was fixed that sometimes caused an off-by-one error in indentation. * In the UTF-8 formatter, rendering of accents, breakable hyphens, and non-breakable spaces was corrected. * In the HTML formatter, encoding of special characters was corrected in multiple respects. * In the mdoc(7) formatter, rendering of .Ex and .Rv was improved for various edge cases. * In the mdoc(7) formatter, handling of empty .Bl -inset item heads was improved. * In the man(7) formatter, some bugs were fixed with respect to same-line detection in the context of .TP and .nf macros, and the indentation of .IP and .TP blocks was improved. * The mandoc(3) library no longer prints to stderr. --- THANKS TO --- Abhinav Upadhyay (NetBSD), Andreas Voegele, Anthony Bentley (OpenBSD), Christian Weisgerber (OpenBSD), Havard Eidnes (NetBSD), Jan Stary, Jason McIntyre (OpenBSD), Jeremie Courreges-Anglas (OpenBSD), Joerg Sonnenberger (NetBSD), Juan Francisco Cantero Hurtado (OpenBSD), Marc Espie (OpenBSD), Matthias Scheler (NetBSD), Pascal Stumpf (OpenBSD), Paul Onyschuk (Alpine Linux), Sebastien Marie, Steffen Nurpmeso, Stuart Henderson (OpenBSD), Ted Unangst (OpenBSD), Theo de Raadt (OpenBSD), Thomas Klausner (NetBSD), and Ulrich Spoerlein (FreeBSD) for reporting bugs and missing features. Changes in version 1.12.3, released on December 31, 2013 * In the mdoc(7) SYNOPSIS, line breaks and hanging indentation now work correctly for .Fo/.Fa/.Fc and .Fn blocks. Thanks to Franco Fichtner for doing part of the work. * The mdoc(7) .Bk macro got some addititonal bugfixes. * In mdoc(7) macro arguments, double quotes can now be quoted by doubling them, just like in man(7). Thanks to Tsugutomo ENAMI for the patch. * At the end of man(7) macro lines, end-of-sentence spacing now works. Thanks to Franco Fichtner for the patch. * For backward compatibility, the man(7) parser now supports the man-ext .UR/.UE (uniform resource identifier) block macros. * The man(7) parser now handles closing blocks that are not open more gracefully. * The man(7) parser now ignores blank lines right after .SH and .SS. * In the man(7) formatter, reset indentation when leaving a block, not just when entering the next one. * The roff(7) .nr request now supports incrementing and decrementing number registers and stops parsing the number right before the first non-digit character. * The roff(7) parser now supports the alternative escape sequence syntax \C'uXXXX' for Unicode characters. * The roff(7) parser now parses and ignores the .fam (font family) and .hw (hyphenation points) requests and the \d and \u escape sequences. * The roff(7) manual got a new ESCAPE SEQUENCE REFERENCE. Changes in version 1.12.2, released on Oktober 5, 2013 * The mdoc(7) to man(7) converter, to be called as mandoc -Tman, is now fully functional. * The mandoc(1) utility now supports the -Ios (default operating system) input option, and the -Tutf8 output mode now actually works. * The mandocdb(8) utility no longer truncates existing databases when starting to build new ones, but only replaces them when the build actually succeeds. * The man(7) parser now supports the PD macro (paragraph distance), and (for GNU man-ext compatibility only) EX (example block) and EE (example end). Plus several bugfixes regarding indentation, line breaks, and vertical spacing, and regarding RS following TP. * The roff(7) parser now supports the \f(BI (bold+italic) font escape, the \z (zero cursor advance) escape and the cc (change control character) and it (input line trap) requests. Plus bugfixes regarding the \t (tab) escape, nested escape sequences, and conditional requests. * In mdoc(7), several bugs were fixed related to UTF-8 output of quoting enclosures, delimiter handling, list indentation and horizontal and vertical spacing, formatting of the Lk, %U, and %C macros, plus some bugfixes related to the handling of syntax errors like badly nested font blocks, stray Ta macros outside column lists, unterminated It Xo blocks, and non-text children of Nm blocks. * In tbl(7), the width of horizontal spans and the vertical spacing around tables was corrected, and in man(7) files, a crash was fixed that was triggered by some particular unclosed T{ macros. * For mandoc developers, we now provide a tbl(3) library manual and gmdiff, a very small, very simplistic groff-versus-mandoc output comparison tool. * Provide this NEWS file. Changes in version 1.12.1, released on March 23, 2012 * Significant work on apropos(1) and mandocdb(8). These tools are now much more robust. A whatis(1) implementation is now handled as an apropos(1) mode. These tools are also able to minimally handle pre-formatted pages, that is, those already formatted by another utility such as GNU troff. * The man.cgi(7) script is also now available for wider testing. It interfaces with mandocdb(8) manuals cached by catman(8). HTML output is generated on-the-fly by libmandoc or internal methods to convert pre-formatted pages. * The mailing list archive for the discuss and tech lists are being hosted by Gmane at gmane.comp.tools.mdocml.user and gmane.comp.tools.mdocml.devel, respectively. Changes in version 1.12.0, released on October 8, 2011 * This version features a new, work-in-progress mandoc(1) output mode: -Tman. This mode allows a system maintainer to distribute man(7) media for older systems that may not natively support mdoc(7), such as old Solaris systems. * The -Ofragment option was added to mandoc(1)'s -Thtml and -Txhtml modes. * While adding features, an apropos(1) utility has been merged from the mandoc-tools sandbox. This interfaces with mandocdb(8) for semantic search of manual content. apropos(1) is different from the traditional apropos primarily in allowing keyword search (such as for functions, utilities, etc.) and regular expressions. Note that the calling syntax for apropos is likely to change as it settles down. * In documentation news, the mdoc(7) and man(7) manuals have been made considerably more readable by adding MACRO OVERVIEW sections, by moving the gory details of the LANGUAGE SYNTAX to the roff(7) manual, and by moving the very technical MACRO SYNTAX sections down to the bottom of the page. * Furthermore, for tbl(7), the -Tascii mode horizontal spacing of tables was rewritten completely. It is now compatible with groff(1), both with and without frames and rulers. * Nesting of indented blocks is now supported in man(7), and several bugs were fixed regarding indentation and alignment. * The page headers in mdoc(7) are now nicer for very long titles. Changes in version 1.11.7, released on September 2, 2011 * Added demandoc(1) utility for stripping away macros and escapes. This replaces the historical deroff(1) utility. * Also improved the mdoc(7) and man(7) manuals. Changes in version 1.11.6, released on August 16, 2011 * Handling of tr macro in roff(7) implemented. This makes Perl documentation much more readable. Hyphenation is also now enabled in man(7) format documents. Many other general improvements have been implemented. Changes in version 1.11.5, released on July 24, 2011 * Significant eqn(7) improvements. mdocml can now parse arbitrary eqn input (although few GNU extensions are accepted, nor is mixing low-level roff with eqn). See the eqn(7) manual for details. For the time being, equations are rendered as simple in-line text. The equation parser satisfies the language specified in the Second Edition User's Guide: http://www.kohala.com/start/troff/v7man/eqn/eqn2e.ps Changes in version 1.11.4, released on July 12, 2011 * Bug-fixes and clean-ups across all systems, especially in mandocdb(8) and the man(7) parser. This release was significantly assisted by participants in OpenBSD's c2k11. Thanks! Changes in version 1.11.3, released on May 26, 2011 * Introduce locale-encoding of output with the -Tlocale output option and Unicode escaped-character input. See mandoc(1) and mandoc_char(7), respectively, for details. This allows for non-ASCII characters (e.g., \[u5000]) to be rendered in the locale's encoding, if said environment supports wide-character encoding (if it does not, -Tascii is used instead). Locale support can be turned off at compile time by removing -DUSE_WCHAR in the Makefile, in which case -Tlocale is always a synonym for -Tascii. * Furthermore, multibyte-encoded documents, such as those in UTF-8, may be on-the-fly recoded into mandoc(1) input by using the newly-added preconv(1) utility. Note: in the future, this feature may be integrated into mandoc(1). Changes in version 1.11.2, released on May 12, 2011 * Corrected some installation issues in version 1.11.1. * Further migration to libmandoc. * Initial public release (this utility is very much under development) of mandocdb(8). This utility produces keyword databases of manual content, which features semantic querying of manual content. Changes in version 1.11.1, released on April 4, 2011 * The earlier libroff, libmdoc, and libman soup have been merged into a single library, libmandoc, which manages all aspects of parsing real manuals, from line-handling to tbl(7) parsing. * As usual, many general fixes and improvements have also occurred. In particular, a great deal of redundancy and superfluous code has been removed with the merging of the backend libraries. * see also the changes in 1.10.10 Changes in version 1.10.10, March 20, 2011, NOT released * Initial eqn(7) functionality is in place. For the time being, this is limited to the recognition of equation blocks; future version of mdocml will expand upon this framework. Changes in version 1.10.9, released on January 7, 2011 * Many back-end fixes have been implemented: argument handling (quoting), man(7) improvements, error/warning classes, and many more. * Initial tbl(7) functionality (see the "TS", "TE", and "T&" macros in the roff(7) manual) has been merged from tbl.bsd.lv. Output is still minimal, especially for -Thtml and -Txhtml, but manages to at least display data. This means that mandoc(1) now has built-in support for two troff preprocessors via libroff: soelim(1) and tbl(1). Changes in version 1.10.8, released on December 24, 2010 * Overhauled the -Thtml and -Txhtml output modes. They now display readable output in arbitrary browsers, including text-based ones like lynx(1). See HTML and XHTML manuals in the DOCUMENTATION section for examples. Attention: available style-sheet classes have been considerably changed! See the example.style.css file for details. Lastly, libmdoc and libman have been cleaned up and reduced in size and complexity. * see also the changes in 1.10.7 Changes in version 1.10.7, December 6, 2010, NOT released Significant improvements merged from OpenBSD downstream, including: * many new roff(7) components, * in-line implementation of troff's soelim(1), * broken-block handling, * overhauled error classifications, and * cleaned up handling of error conditions. Changes in version 1.10.6, released on September 27, 2010 * Calling conventions for mandoc(1) have changed: -W improved and -f deprecated. * Non-ASCII characters are also now uniformly discarded. * Lots of documentation improvements. * Many incremental fixes accomodating for groff's more interesting productions. * Lastly, pod2man(1) preambles are now fully accepted after some considerable roff(7) and special character support. Changes in version 1.10.5, released on July 27, 2010 * Primarily a bug-fix and polish release, but including -Tpdf support in mandoc(1) by way of "Summer of Code". Highlights: * fix "Sm" and "Bd" handling * fix end-of-sentence handling for embedded sentences * polish man(7) documentation * document all mdoc(7) macros * polish mandoc(1) -Tps output * lots of internal clean-ups in character escapes * un-break literal contexts in man(7) documents * improve -Thtml output for -man * add mandoc(1) -Tpdf support Changes in version 1.10.4, released on July 12, 2010 * Lots of features developed during both "Summer of Code" and the OpenBSD c2k10 hackathon: * minimal "ds" roff(7) symbols are supported * beautified SYNOPSIS section output * acceptance of scope-block breakage in mdoc(7) * clarify error message status * many minor bug-fixes and formatting issues resolved * see also changes in 1.10.3 Changes in version 1.10.3, June 29, 2010, NOT released * variable font-width and paper-size support in mandoc(1) -Tps output * "Bk" mdoc(7) support Changes in version 1.10.2, released on June 19, 2010 * Small release featuring text-decoration in -Tps output, a few minor relaxations of errors, and some optimisations. Changes in version 1.10.1, released on June 7, 2010 * This primarily focusses on the "Bl" and "It" macros described in mdoc(7). Multi-line column support is now fully compatible with groff, as are implicit list entries for columns. * Removed manuals(7) in favour of http://manpages.bsd.lv. * The way we handle the SYNOPSIS section (see the SYNOPSIS documentation in MANUAL STRUCTURE) has also been considerably simplified compared to groff's method. * Furthermore, the -Owidth=width output option has been added to -Tascii, see mandoc(1). * Lastly, initial PostScript output has been added with the -Tps option to mandoc(1). It's brutally simple at the moment: fixed-font, with no font decorations. Changes in version 1.10.0, released on May 29, 2010 * Release consisting of the results from the m2k10 hackathon and up-merge from OpenBSD. This requires a significant note of thanks to Ingo Schwarze (OpenBSD) and Joerg Sonnenberger (NetBSD) for their hard work, and again to Joerg for hosting m2k10. Highlights (mostly cribbed from Ingo's m2k10 report) follow in no particular order: * a libroff preprocessor in front of libmdoc and libman stripping out roff(7) instructions; * end-of-sentence (EOS) detection in free-form and macro lines; * correct handling of tab-separated columnar lists in mdoc(7); * improved main calling routines to optionally use mmap(3) for better performance; * cleaned up exiting when invoked as -Tlint or over multiple files with -fign-errors; * error and warning message handling re-written to be unified for libroff, libmdoc, and libman; * handling of badly-nested explicit-scoped macros; * improved free-form text parsing in libman and libmdoc; * significant GNU troff compatibility improvements in -Tascii, largely in terms of spacing; * a regression framework for making sure the many fragilities of GNU troff aren't trampled in subsequent work; * support for -Tascii breaking at hyphens encountered in free-form text; * and many more minor fixes and improvements Changes in version 1.9.25, released on May 13, 2010 * Fixed handling of "\*(Ba" escape. * Backed out -fno-ign-chars (pointless complexity). * Fixed erroneous breaking of literal lines. * Fixed SYNOPSIS breaking lines before non-initial macros. * Changed default section ordering. * Most importantly, the framework for end-of-sentence double-spacing is in place, now implemented for the "end-of-sentence, end-of-line" rule. * This is a stable roll-back point before the mandoc hackathon in Rostock! Changes in version 1.9.24, released on May 9, 2010 * Rolled back break-at-hyphen. * -DUGLY is now the default (no feature splits!). * Free-form text is not de-chunked any more: lines are passed whole-sale into the front-end, including whitespace. * Added mailing lists. Changes in version 1.9.23, released on April 7, 2010 * mdocml has been linked to the OpenBSD build. * This version incorporates many small changes, mostly from patches by OpenBSD, allowing crufty manuals to slip by with warnings instead of erroring-out. * Some subtle semantic issues, such as punctuation scope, have also been fixed. * Lastly, some issues with -Thtml have been fixed, which prompted an update to the online manual pages style layout. Changes in version 1.9.22, released on March 31, 2010 * Adjusted merge of the significant work by Ingo Schwarze in getting "Xo" blocks (block full implicit, e.g., "It" for non-columnar lists) to work properly. This isn't enabled by default: you must specify -DUGLY as a compiler flag (see the Makefile for details). Changes in version 1.9.20, released on March 30, 2010 * More efforts to get roff instructions in man(7) documents under control. Note that roff instructions embedded in line-scoped, next-line macros (e.g. "B") are not supported. * Leading punctuation for mdoc(7) macros, such as "Fl ( ( a", are now correctly handled. Changes in version 1.9.18, released on March 27, 2010 * Many fixes (largely pertaining to scope) and improvements (e.g., handling of apostrophe-control macros, which fixes the strange "BR" seen in some macro output) to handling roff instructions in man(7) documents. Changes in version 1.9.17, released on March 25, 2010 * Accept perlpod(1) standard preamble. * Also accept (and discard) "de", "dei", "am", "ami", and "ig" roff macro blocks. Changes in version 1.9.16, released on March 22, 2010 * Inspired by patches and bug reports by Ingo Schwarze, allowed man(7) to accept non-printing elements to be nested within next-line scopes, such as "br" within "B" or "TH", which is valid roff. * Longsoon architecture also noted and Makefile cleaned up. Changes in version 1.9.15, released on February 18, 2010 * Moved to our new BSD.lv home. * XHTML is now an acceptable output mode for mandoc(1); * "Xr" made more compatible with groff; * "Vt" fixed when invoked in SYNOPSIS; * "\\" escape removed; * end-of-line white-space detected for all lines; * subtle bug fixed in list display for some modes; * compatibility layer checked in for compilation in diverse UNIX systems; * and column lengths handled correctly. For older releases, see the ChangeLog files -in http://mdocml.bsd.lv/snapshots/ . +in http://mandoc.bsd.lv/snapshots/ . Index: vendor/mdocml/dist/TODO =================================================================== --- vendor/mdocml/dist/TODO (revision 321806) +++ vendor/mdocml/dist/TODO (revision 321807) @@ -1,602 +1,582 @@ ************************************************************************ * Official mandoc TODO. -* $Id: TODO,v 1.237 2017/05/16 19:06:30 schwarze Exp $ +* $Id: TODO,v 1.246 2017/07/24 11:15:12 schwarze Exp $ ************************************************************************ Many issues are annotated for difficulty as follows: - loc = locality of the issue * single file issue, affects file only, or very few ** single module issue, affects several files of one module *** cross-module issue, significantly impacts multiple modules and may require substantial changes to internal interfaces - exist = difficulty of the existing code in this area * affected code is straightforward and easy to read and change ** affected code is somewhat complex, but once you understand the design, not particularly difficult to understand *** affected code uses a special, exceptionally tricky design - algo = difficulty of the new algorithm to be written * the required logic and code is straightforward ** the required logic is somewhat complex and needs a careful design *** the required logic is exceptionally tricky, maybe an approach to solve that is not even known yet - size = the amount of code to be written or changed * a small number of lines (at most 100, usually much less) ** a considerable amount of code (several dozen to a few hundred) *** a large amount of code (many hundreds, maybe thousands) - imp = importance of the issue * mostly for completeness ** would be nice to have *** issue causes considerable inconvenience Obviously, as the issues have not been solved yet, these annotations are mere guesses, and some may be wrong. ************************************************************************ * missing features ************************************************************************ --- missing roff features ---------------------------------------------- - .ad (adjust margins) .ad l -- adjust left margin only (flush left) .ad r -- adjust right margin only (flush right) .ad c -- center text on line .ad b -- adjust both margins (alias: .ad n) .na -- temporarily disable adjustment without changing the mode .ad -- re-enable adjustment without changing the mode Adjustment mode is ignored while in no-fill mode (.nf). loc *** exist *** algo ** size ** imp ** (parser reorg would help) - .fc (field control) found by naddy@ in xloadimage(1) loc ** exist *** algo * size * imp * - .nr third argument (auto-increment step size, requires \n+) found by bentley@ in sbcl(1) Mon, 9 Dec 2013 18:36:57 -0700 loc * exist * algo * size * imp ** - .ns (no-space mode) occurs in xine-config(1) when implementing this, also let .TH set it reported by brad@ Sat, 15 Jan 2011 15:45:23 -0500 loc *** exist *** algo *** size ** imp * - .while and .shift found by jca@ in ratpoison(1) Sun, 30 Jun 2013 12:01:09 +0200 loc * exist ** algo ** size ** imp ** -- \h horizontal move - #2 most important issue naddy@ Mon, 16 Feb 2015 20:59:17 +0100 - found in cclive(1) nasm(1) bogofilter(1) asciidoc/DocBook output - bentley@ on discuss@ Sat, 21 Sep 2013 22:29:34 -0600 - naddy@ Thu, 4 Dec 2014 16:26:41 +0100 - loc ** exist ** algo ** size * imp *** (parser reorg helps a lot) - - \n+ and \n- numerical register increment and decrement found by bentley@ in sbcl(1) Mon, 9 Dec 2013 18:36:57 -0700 loc * exist * algo * size * imp ** -- \n(.$ macro argument count number register; ocserv(8) by autogen - found by sthen@ Thu, 19 Feb 2015 22:03:01 +0000 - loc * exist ** algo * size * imp ** - - \w'' improve width measurements would not be very useful without an expression parser, see below needed for Tcl_NewStringObj(3) via wiz@ Wed, 5 Mar 2014 22:27:43 +0100 loc ** exist *** algo *** size * imp *** - \\ in high-level macro arguments Currently, \\ is expanded in two situations: 1) macro and string definition (roff.c setstrn()) 2) macro argument parsing (mandoc.c mandoc_getarg()) For user defined macros, the second happens in time because of ROFF_REPARSE. But for standard high-level macros, it only happens after entering the high level parsers, which is too late because the code doesn't get back to roff.c roff_res() from that point. Because this requires distinguishing requests, user-defined macros and standard macros on the roff_res() level, it is hard to solve without the parser reorg. Found by naddy@ in devel/cutils cobfusc(1) Mon, 16 Feb 2015 19:10:52 +0100 loc *** exist *** algo *** size ** imp * - using undefined strings or macros defines them to be empty wl@ Mon, 14 Nov 2011 14:37:01 +0000 loc * exist * algo * size * imp * --- missing mdoc features ---------------------------------------------- - .Bl -column .Xo support is missing ultimate goal: restore .Xr and .Dv to lib/libc/compat-43/sigvec.3 lib/libc/gen/signal.3 lib/libc/sys/sigaction.2 loc * exist *** algo *** size * imp ** - edge case: decide how to deal with blk_full bad nesting, e.g. .Sh .Nm .Bk .Nm .Ek .Sh found by jmc@ in ssh-keygen(1) from jmc@ Wed, 14 Jul 2010 18:10:32 +0100 loc * exist *** algo *** size ** imp ** - .Bd -centered implies -filled, not -unfilled, which is not easy to implement; it requires code similar to .ce, which we don't have either. Besides, groff has bug causing text right *before* .Bd -centered to be centered as well. loc *** exist *** algo ** size ** imp ** (parser reorg would help) - .Bd -filled should not be the same as .Bd -ragged, but align both the left and right margin. In groff, it is implemented in terms of .ad b, which we don't have either. Found in cksum(1). loc *** exist *** algo ** size ** imp ** (parser reorg would help) - implement blank `Bl -column', such as .Bl -column .It foo Ta bar .El loc * exist *** algo *** size * imp * - explicitly disallow nested `Bl -column', which would clobber internal flags defined for struct mdoc_macro loc * exist * algo * size * imp ** - In .Bl -column .It, the end of the line probably has to be regarded as an implicit .Ta, if there could be one, see the following mildly ugly code from login.conf(5): .Bl -column minpasswordlen program xetcxmotd .It path Ta path Ta value of Dv _PATH_DEFPATH .br Default search path. reported by Michal Mazurek via jmc@ Thu, 7 Apr 2011 16:00:53 +0059 loc * exist *** algo ** size * imp ** - inside `.Bl -column' phrases, punctuation is handled like normal text, e.g. `.Bl -column .It Fl x . Ta ...' should give "-x -." - inside `.Bl -column' phrases, TERMP_IGNDELIM handling by `Pf' is not safe, e.g. `.Bl -column .It Pf a b .' gives "ab." but should give "ab ." - check whether it is correct that `D1' uses INDENT+1; does it need its own constant? loc * exist ** algo ** size * imp ** - prohibit `Nm' from having non-text HEAD children (e.g., NetBSD mDNSShared/dns-sd.1) (mdoc_html.c and mdoc_term.c `Nm' handlers can be slightly simplified) - support translated section names e.g. x11/scrotwm scrotwm_es.1:21:2: error: NAME section must be first that one uses NOMBRE because it is spanish... deraadt tends to think that section-dependent macro behaviour is a bad idea in the first place, so this may be irrelevant loc ** exist ** algo ** size * imp ** - When there is free text in the SYNOPSIS and that free text contains the .Nm macro, groff somehow understands to treat the .Nm as an in-line macro, while mandoc treats it as a block macro and breaks the line. No idea how the logic for distinguishing in-line and block instances should be, needs investigation. uqs@ Thu, 2 Jun 2011 11:03:51 +0200 uqs@ Thu, 2 Jun 2011 11:33:35 +0200 loc * exist ** algo *** size * imp ** --- missing tbl features ----------------------------------------------- -- horizontal lines in the layout still consume data cells - and can be mixed with actual data on the same table line - synaptics(4) found by tedu@ Mon, 17 Aug 2015 21:17:42 -0400 - loc ** exist ** algo ** size ** imp *** - -- break long text into lines inside cells - net/lftp(1) from jirib via bentley@ Sep 13, 2016 - -- layout l1 for a column of max text width 3 reduces the following - inter-column spacing for groff, but not for mandoc - net/lftp(1) from jirib via bentley@ Sep 13, 2016 - -- the "w" layout option is ignored - synaptics(4) found by tedu@ Mon, 17 Aug 2015 21:17:42 -0400 - loc * exist * algo * size * imp ** - - the "s" layout column specifier is used for placement of data into columns, but ignored during column width calculations synaptics(4) found by tedu@ Mon, 17 Aug 2015 21:17:42 -0400 loc * exist ** algo *** size * imp ** - support mdoc(7) and man(7) macros inside tbl(7) code; probably requires the parser reorg and letting tbl(7) use roff_node such that macro sets can mix; informed by bapt@ that FreeBSD needs this: 3 Jan 2015 23:32:23 +0100 loc *** exist ** algo *** size ** imp *** - look at the POSIX manuals in the books/man-pages-posix port, they use some unsupported tbl(7) features. loc * exist ** algo ** size ** imp *** - look what Joerg Schilling manual pages use Thu, 19 Mar 2015 18:31:48 +0100 - use Unicode U+2500 to U+256C for table borders in tbl(7) -Tutf-8 output suggested by bentley@ Tue, 14 Oct 2014 04:10:55 -0600 loc * exist ** algo * size * imp ** --- missing eqn features ----------------------------------------------- - In a matrix, break the output line after each matrix line. Found in the discussion at CDBUG 2015. Suggested by Avi Weinstock. loc * exist * algo * size * imp ** - The "size" keyword is parsed, but ignored by the formatter. loc * exist * algo * size * imp * - The spacing characters `~', `^', and tab are currently ignored, see User's Guide (Second Edition) page 2 section 4. loc * exist * algo ** size * imp ** - Mark and lineup are parsed and ignored, see User's Guide (Second Edition) page 5 section 15. loc ** exist ** algo ** size ** imp ** +- GNU eqn converts some operators to special characters, for example, + input HYPHEN-MINUS becomes output \(mi, unless it is part of a + quoted word. mandoc(1) only does this when the operator is + surrounded by blanks, not when it is part of an unquoted word. + Also, check whether there are more such cases (e.g., +?). + reported by bentley@ 20 Jun 2017 02:04:29 -0600 + +- Primes, opprime, and ' + bentley@ Thu, 13 Jul 2017 23:14:20 -0600 + --- missing misc features ---------------------------------------------- - italic correction (\/) in PostScript mode Werner LEMBERG on groff at gnu dot org Sun, 10 Nov 2013 12:47:46 loc ** exist ** algo * size * imp * - change the default PAGER to more -Es and use the pager even for apropos title line output; req by bapt@ loc * exist * algo * size * imp *** - clean up escape sequence handling, creating three classes: (1) fully implemented, or parsed and ignored without loss of content (2) unimplemented, potentially causing loss of content or serious mangling of formatting (e.g. \n) -> ERROR see textproc/mgdiff(1) for nice examples (3) undefined, just output the character -> perhaps WARNING loc *** exist ** algo ** size ** imp *** (parser reorg helps) - kettenis wants base roff, ms, and me Fri, 1 Jan 2010 22:13:15 +0100 (CET) loc ** exist ** algo ** size *** imp * --- compatibility checks ----------------------------------------------- - is .Bk implemented correctly in modern groff? sobrado@ Tue, 19 Apr 2011 22:12:55 +0200 - compare output to Heirloom roff, Solaris roff, and http://repo.or.cz/w/neatroff.git http://litcave.rudi.ir/ - look at AT&T DWB http://www2.research.att.com/sw/download Carsten Kunze has patches Mon, 4 Aug 2014 17:01:28 +0200 ported version: https://github.com/n-t-roff/DWB3.3 Carsten Kunze Wed, 22 Apr 2015 11:21:43 +0200 - look at pages generated from reStructeredText, e.g. devel/mercurial hg(1) These are a weird mixture of man(7) and custom autogenerated low-level roff stuff. Figure out to what extent we can cope. For details, see http://docutils.sourceforge.net/rst.html noted by stsp@ Sat, 24 Apr 2010 09:17:55 +0200 reminded by nicm@ Mon, 3 May 2010 09:52:41 +0100 - look at pages generated from ronn(1) github.com/rtomayko/ronn (based on markdown) - look at pages generated from Texinfo source by yat2m, e.g. security/gnupg First impression is not that bad. - look at pages generated by pandoc; see https://github.com/jgm/pandoc/blob/master/src/Text/Pandoc/Writers/Man.hs porting planned by kili@ Thu, 19 Jun 2014 19:46:28 +0200 - check compatibility with Plan9: http://swtch.com/usr/local/plan9/tmac/tmac.an http://swtch.com/plan9port/man/man7/man.html "Anthony J. Bentley" 28 Dec 2010 21:58:40 -0700 - check compatibility with COHERENT troff: http://www.nesssoftware.com/home/mwc/source.php - check compatibility with the man(7) formatter https://raw.githubusercontent.com/rofl0r/hardcore-utils/master/man.c - check compatibility with http://ikiwiki.info/plugins/contrib/mandoc/ https://github.com/schmonz/ikiwiki/compare/mandoc Amitai Schlair Mon, 19 May 2014 14:05:53 -0400 - check features of the Slackware man.conf(5) format Carsten Kunze Wed, 11 Mar 2015 17:57:24 +0100 ************************************************************************ * formatting issues: ugly output ************************************************************************ - revisit empty in-line macros look at the difference between "Em x Em ." and "Sq x Em ." Carsten Kunze Fri, 12 Dec 2014 00:15:41 +0100 loc *** exist *** algo *** size * imp ** - a column list with blank `Ta' cells triggers a spurious start-with-whitespace printing of a newline - In .Bl -column, .It a"bc" shows the quotes in groff, but not in mandoc loc * exist *** algo ** size * imp ** - In .Bl -column, .It Em AuthenticationKey Length ought to render "Key Length" with emphasis, too, see OpenBSD iked.conf(5). reported again Nicolas Joly via wiz@ Wed, 12 Oct 2011 00:20:00 +0200 loc * exist *** algo *** size ** imp *** - empty phrases in .Bl column produce too few blanks try e.g. .Bl -column It Ta Ta reported by millert Fri, 02 Apr 2010 16:13:46 -0400 loc * exist *** algo *** size * imp ** - .%T can have trailing punctuation. Currently, it puts the trailing punctuation into a trailing MDOC_TEXT element inside its own scope. That element should rather be outside its scope, such that the punctuation does not get underlines. This is not trivial to implement because .%T then needs some features of in_line_eoln() - slurp all arguments into one single text element - and one feature of in_line() - put trailing punctuation out of scope. Found in mount_nfs(8) and exports(5), search for "Appendix". loc ** exist ** algo *** size * imp ** - Trailing punctuation after .%T triggers EOS spacing, at least outside .Rs (eek!). Simply setting ARGSFL_DELIM for .%T is not the right solution, it sends mandoc into an endless loop. reported by Nicolas Joly Sat, 17 Nov 2012 11:49:54 +0100 loc * exist ** algo ** size * imp ** - global variables in the SYNOPSIS of section 3 pages .Vt vs .Vt/.Va vs .Ft/.Va vs .Ft/.Fa ... from kristaps@ Tue, 08 Jun 2010 11:13:32 +0200 +- implicit whitespace around inline equations + example code: where '$times$' denotes matrix multiplication + must not have an HTML line break, nor a blank, before + partial solution: html.c {"math", HTML_NLINSIDE | HTML_INDENT}, + bentley@ Thu, 13 Jul 2017 19:00:59 -0600 + - in enclosures, mandoc sometimes fancies a bogus end of sentence reminded by jmc@ Thu, 23 Sep 2010 18:13:39 +0059 loc * exist ** algo *** size * imp *** - a line starting with "\fB something" counts as starting with whitespace and triggers a line break; found in audio/normalize-mp3(1) loc ** exist * algo ** size * imp ** - formatting /usr/local/man/man1/latex2man.1 with groff and mandoc reveals lots of bugs both in groff and mandoc... reported by bentley@ Wed, 22 May 2013 23:49:30 -0600 --- PostScript and PDF issues ------------------------------------------ - PDF output doesn't use a monospaced font for .Bd -literal Example: "mandoc -Tpdf afterboot.8 > output.pdf && pdfviewer output.pdf". Search the text "Routing tables". Also check what PostScript mode does when fixing this. reported by juanfra@ Wed, 04 Jun 2014 21:44:58 +0200 instructions from juanfra@ Wed, 11 Jun 2014 02:21:01 +0200 add a new <> block to the PDF files with /BaseFont /Courier and change the /Name from /F0 to the new font (/F5 (?)). re-reported by tb@ Mon, 16 Mar 2015 16:47:21 +0100 loc * exist ** algo ** size * imp ** --- HTML issues -------------------------------------------------------- - .Bf at the beginning of a paragraph inserts a bogus 1ex horizontal space, see for example random(3). Introduced in http://mdocml.bsd.lv/cgi-bin/cvsweb/mdoc_html.c.diff?r1=1.91&r2=1.92 reported by deraadt@ Mon, 28 Sep 2015 20:14:13 -0600 (MDT) loc ** exist ** algo ** size * imp * - jsg on icb, Nov 3, 2014: try to guess Xr in man(7) for hyperlinking and render them with https://github.com/Debian/debiman/issues/15 loc * exist * algo ** size ** imp ** - The tables used to render the three-part page headers actually force the width of the to the max-width given for . Not yet sure how to fix that... Observed by an Anonymous Coward on undeadly.org: http://undeadly.org/cgi?action=article&sid=20140925064244&pid=1 loc * exist * algo ** size * imp *** - generate tags in HTML idea from florian@ Tue, 7 Apr 2015 00:26:28 +0000 may be possible to implement with .Lk img://something.png alt_text - check https://github.com/trentm/mdocml ************************************************************************ * formatting issues: gratuitous differences ************************************************************************ - .Fn reopens a new scope after punctuation in mandoc, but closes its scope for good in groff. Do we want to change mandoc or groff? Steffen Nurpmeso Sat, 08 Nov 2014 13:34:59 +0100 loc * exist ** algo ** size * imp ** -- .Lk formatting for long links with line breaks - Franco Fichtner 8 Oct 2013 00:33:42 +0200 - - In .Bl -enum -width 0n, groff continues one the same line after the number, mandoc breaks the line. mail to kristaps@ Mon, 20 Jul 2009 02:21:39 +0200 loc * exist ** algo ** size * imp ** - .Pp between two .It in .Bl -column should produce one, not two blank lines, see e.g. login.conf(5). reported by jmc@ Sun, 17 Apr 2011 14:04:58 +0059 reported again by sthen@ Wed, 18 Jan 2012 02:09:39 +0000 (UTC) loc * exist *** algo ** size * imp ** - If the *first* line after .It is .Pp, break the line right after the tag, do not pad with space characters before breaking. See the description of the a, c, and i commands in sed(1). loc * exist ** algo ** size * imp ** - If the first line after .It is .D1, do not assert a blank line in between, see for example tmux(1). reported by nicm@ 13 Jan 2011 00:18:57 +0000 loc * exist ** algo ** size * imp ** - Trailing punctuation after .It should trigger EOS spacing. reported by Nicolas Joly Sat, 17 Nov 2012 11:49:54 +0100 Probably, this should be fixed somewhere in termp_it_pre(), not sure. loc * exist ** algo ** size * imp ** -- .Nx 1.0a - should be "NetBSD 1.0A", not "NetBSD 1.0a", - see OpenBSD ccdconfig(8). - loc * exist * algo * size * imp ** - -- In .Bl -tag, if a tag exceeds the right margin and must be continued - on the next line, it must be indented by -width, not width+1; - see "rule block|pass" in OpenBSD ifconfig(8). - loc * exist *** algo ** size * imp ** - - When the -width string contains macros, the macros must be rendered before measuring the width, for example .Bl -tag -width ".Dv message" in magic(5), located in src/usr.bin/file, is the same as -width 7n, not -width 11n. The same applies to .Bl -column column widths; reported again by Nicolas Joly Thu, 1 Mar 2012 13:41:26 +0100 via wiz@ 5 Mar reported again by Franco Fichtner Fri, 27 Sep 2013 21:02:28 +0200 reported again by Bruce Evans Fri, 17 Feb 2017 21:22:44 +0100 via bapt@ loc *** exist *** algo *** size ** imp *** An easy partial fix would be to just skip the first word if it starts with a dot, including any following white space, when measuring. loc * exist * algo * size * imp *** - The \& zero-width character counts as output. That is, when it is alone on a line between two .Pp, we want three blank lines, not two as in mandoc. loc ** exist ** algo ** size * imp ** - Sequences of multiple man(7) paragraphs (.PP, .IP) interspersed with .ps and .nf/.fi produce execessive blank lines, see libJudy and graphics/dcmtk. The parser reorg may help with this. - trailing whitespace must be ignored even when followed by a font escape, see for example makes \fBdig \fR operate in batch mode in dig(1). loc ** exist ** algo ** size * imp ** ************************************************************************ * warning issues ************************************************************************ -- provide a way in mandoc(1) to warn about broken .Xr links; - probably cannot be on by default in -Tlint because it needs - to access the manpath and mandoc.db(3) after parsing. - asked for by jmc@ Fri, 4 Dec 2015 22:39:40 +0000 +- style message about macros inside .Bd -literal and .Dl, in particular + font changing macros like .Cm, .Ar, .Fa (from the mdoclint TODO) +- style message about mismatches between the section number in the + file name (if it is known) and the section number in .Dt + (from the mdoclint TODO) + +- style message about NULL without .Dv (from the mdoclint TODO) + +- style message about error constants without .Er (from the mdoclint TODO) + - warn when .Sh or .Ss contain other macros Steffen Nurpmeso, savannah.gnu.org/bugs/index.php?45034 loc * exist * algo * size * imp ** +- style message about violations of the convention + .An name Aq Mt localpart@domain in AUTHORS (from the mdoclint TODO) + - warn about attempts to call non-callable macros Steffen Nurpmeso Tue, 11 Nov 2014 22:55:16 +0100 Note that formatting is inconsistent in groff. .Fn Po prints "Po()", .Ar Sh prints "file ..." and no "Sh". Relatively hard because the relevant code is scattered all over mdoc_macro.c and all subtly different. loc ** exist ** algo ** size ** imp ** +- style message about suspicious uses of - vs. \- vs. \(mi + e.g. -1 is likely wrong (from the mdoclint TODO) + +- warn about punctuation - e.g. ',' and ';' - at the beginning + of a text line, if it is likely intended to follow the preceding + output without intervening whitespace, in particular after a + macro line (from the mdoclint TODO) + - mandoc_special does not really check the escape sequence, but just the overall format loc ** exist ** algo *** size ** imp ** -- integrate mdoclint into mandoc ("end-of-line whitespace" thread) - from jmc@ Mon, 13 Jul 2009 17:12:09 +0100 - from kristaps@ Mon, 13 Jul 2009 18:34:53 +0200 - from jmc@ Mon, 13 Jul 2009 17:45:37 +0059 - from kristaps@ Mon, 13 Jul 2009 19:02:03 +0200 - (mostly done, check what remains) - -- -Tlint parser errors and warnings to stdout - to tech@mdocml, naddy@ Wed, 28 Sep 2011 11:21:46 +0200 - wait! kristaps@ Sun, 02 Oct 2011 17:12:52 +0200 - ************************************************************************ * documentation issues ************************************************************************ +- dashes, hyphens, and minus signs in manual pages + jmc@ Fri, 28 Mar 2014 07:19:27 +0000 + - mark macros as: page structure domain, manual domain, general text domain is this useful? - mention /usr/share/misc/mdoc.template in mdoc(7)? - Is all the content from http://www.std.com/obi/BSD/doc/usd/28.tbl/tbl covered in tbl(7)? ************************************************************************ * performance issues ************************************************************************ -- Why are we using MAP_SHARED, not MAP_PRIVATE for mmap(2)? - from kristaps@ Sat, 09 Aug 2014 13:51:36 +0200 - -Several areas can be cleaned up to make mandoc even faster. These are - - the PDF file is HUGE: this can be reduced by using relative offsets ************************************************************************ * structural issues ************************************************************************ - POSIX says in the documentation of sysconf(3) that PATH_MAX is allowed to be so large that it is a bad idea to use it for sizing static buffers. So use dynamic buffers throughout. See the file test-PATH_MAX.c for details. Found by Aaron M. Ucko in the GNU Hurd via Bdale Garbee, https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=829624 - We use the input line number at several places to distinguish same-line from different-line input. That plainly doesn't work with user-defined macros, leading to random breakage. +- Is it possible to further simplify ENDBODY_SPACE? + - Find better ways to prevent endless loops in roff(7) macro and string expansion. -- Finish cleanup of date handling. - Decide which formats should be recognized where. - Update both mdoc(7) and man(7) documentation. - Triggered by Tim van der Molen Tue, 22 Feb 2011 20:30:45 +0100 +- make buffers for parsing functions const + christos@ via wiz@ Fri, 18 Dec 2015 17:10:01 +0100 - struct mparse refactoring Steffen Nurpmeso Thu, 04 Sep 2014 12:50:00 +0200 ************************************************************************ * CGI issues ************************************************************************ - Enable HTTP compression by detecting gzip encoding and filtering output through libz. - Sandbox (see OpenSSH). - Enable caching support via HTTP 304 and If-Modified-Since. - Have Mac OSX systems automatically disable -static compilation of the CGI: -static isn't supported. ************************************************************************ * to improve in the groff_mdoc(7) macros ************************************************************************ - use uname(1) to set doc-default-operating-system at install time tobimensch Mon, 1 Dec 2014 00:25:07 +0100 - apostrophe (39), circumflex (94), grave (96), tilde (126) in manuals: \(aq, \(ha, \`, \(ti Re: [Groff] ASCII Minus Sign in man Pages. bentley@ 26 Apr 2017 10:02:06 -0600 Do we need to fix existing manuals? Do we need to fix the definition of the mdoc(7) language? Index: vendor/mdocml/dist/apropos.1 =================================================================== --- vendor/mdocml/dist/apropos.1 (revision 321806) +++ vendor/mdocml/dist/apropos.1 (revision 321807) @@ -1,486 +1,486 @@ -.\" $Id: apropos.1,v 1.45 2017/03/27 18:51:36 schwarze Exp $ +.\" $Id: apropos.1,v 1.46 2017/07/04 23:40:01 schwarze Exp $ .\" .\" Copyright (c) 2011, 2012 Kristaps Dzonsons .\" Copyright (c) 2011, 2012, 2014, 2017 Ingo Schwarze .\" .\" Permission to use, copy, modify, and distribute this software for any .\" purpose with or without fee is hereby granted, provided that the above .\" copyright notice and this permission notice appear in all copies. .\" .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. .\" -.Dd $Mdocdate: March 27 2017 $ +.Dd $Mdocdate: July 4 2017 $ .Dt APROPOS 1 .Os .Sh NAME .Nm apropos , .Nm whatis .Nd search manual page databases .Sh SYNOPSIS .Nm .Op Fl afk .Op Fl C Ar file .Op Fl M Ar path .Op Fl m Ar path .Op Fl O Ar outkey .Op Fl S Ar arch .Op Fl s Ar section .Ar expression ... .Sh DESCRIPTION The .Nm apropos and .Nm whatis utilities query manual page databases generated by .Xr makewhatis 8 , evaluating .Ar expression for each file in each database. By default, they display the names, section numbers, and description lines of all matching manuals. .Pp By default, .Nm searches for .Xr makewhatis 8 databases in the default paths stipulated by .Xr man 1 and uses case-insensitive substring matching .Pq the Cm = No operator over manual names and descriptions .Pq the Li \&Nm No and Li \&Nd No macro keys . Multiple terms imply pairwise .Fl o . .Pp .Nm whatis is a synonym for .Nm .Fl f . .Pp The options are as follows: .Bl -tag -width Ds .It Fl a Instead of showing only the title lines, show the complete manual pages, just like .Xr man 1 .Fl a would. If the standard output is a terminal device and .Fl c is not specified, use .Xr more 1 to paginate them. In .Fl a mode, the options .Fl IKOTW described in the .Xr mandoc 1 manual are also available. .It Fl C Ar file Specify an alternative configuration .Ar file in .Xr man.conf 5 format. .It Fl f Search for all words in .Ar expression in manual page names only. The search is case insensitive and matches whole words only. In this mode, macro keys, comparison operators, and logical operators are not available. .It Fl k Support the full .Ar expression syntax. It is the default for .Nm . .It Fl M Ar path Use the colon-separated path instead of the default list of paths searched for .Xr makewhatis 8 databases. Invalid paths, or paths without manual databases, are ignored. .It Fl m Ar path Prepend the colon-separated paths to the list of paths searched for .Xr makewhatis 8 databases. Invalid paths, or paths without manual databases, are ignored. .It Fl O Ar outkey Show the values associated with the key .Ar outkey instead of the manual descriptions. .It Fl S Ar arch Restrict the search to pages for the specified .Xr machine 1 architecture. .Ar arch is case insensitive. By default, pages for all architectures are shown. .It Fl s Ar section Restrict the search to the specified section of the manual. By default, pages from all sections are shown. See .Xr man 1 for a listing of sections. .El .Pp The options .Fl chlw are also supported and are documented in .Xr man 1 . The options .Fl fkl are mutually exclusive and override each other. .Pp An .Ar expression consists of search terms joined by logical operators .Fl a .Pq and and .Fl o .Pq or . The .Fl a operator has precedence over .Fl o and both are evaluated left-to-right. .Bl -tag -width Ds .It \&( Ar expr No \&) True if the subexpression .Ar expr is true. .It Ar expr1 Fl a Ar expr2 True if both .Ar expr1 and .Ar expr2 are true (logical .Sq and ) . .It Ar expr1 Oo Fl o Oc Ar expr2 True if .Ar expr1 and/or .Ar expr2 evaluate to true (logical .Sq or ) . .It Ar term True if .Ar term is satisfied. This has syntax .Sm off .Oo .Op Ar key Op , Ar key ... .Pq Cm = | \(ti .Oc .Ar val , .Sm on where .Ar key is an .Xr mdoc 7 macro to query and .Ar val is its value. See .Sx Macro Keys for a list of available keys. Operator .Cm = evaluates a substring, while .Cm \(ti evaluates a regular expression. .It Fl i Ar term If .Ar term is a regular expression, it is evaluated case-insensitively. Has no effect on substring terms. .El .Pp Results are sorted according to the following criteria: .Bl -enum .It The manpath directory tree the page is found in, according to the order specified with .Fl M , .Fl m , the .Ev MANPATH environment variable, the .Xr man.conf 5 configuration file, or the default documented in .Xr man.conf 5 . .It The section number in ascending numerical order. .It The page name in ascending .Xr ascii 7 alphabetical order, case-insensitive. .El .Pp Each output line is formatted as .Pp .D1 name[, name...](sec) \- description .Pp Where .Dq name is the manual's name, .Dq sec is the manual section, and .Dq description is the manual's short description. If an architecture is specified for the manual, it is displayed as .Pp .D1 name(sec/arch) \- description .Pp Resulting manuals may be accessed as .Pp .Dl $ man \-s sec name .Pp If an architecture is specified in the output, use .Pp .Dl $ man \-s sec \-S arch name .Ss Macro Keys Queries evaluate over a subset of .Xr mdoc 7 macros indexed by .Xr makewhatis 8 . In addition to the macro keys listed below, the special key .Cm any may be used to match any available macro key. .Pp Names and description: .Bl -column "xLix" description -offset indent -compact .It Li \&Nm Ta manual name .It Li \&Nd Ta one-line manual description .It Li arch Ta machine architecture (case-insensitive) .It Li sec Ta manual section number .El .Pp Sections and cross references: .Bl -column "xLix" description -offset indent -compact .It Li \&Sh Ta section header (excluding standard sections) .It Li \&Ss Ta subsection header .It Li \&Xr Ta cross reference to another manual page .It Li \&Rs Ta bibliographic reference .El .Pp Semantic markup for command line utilities: .Bl -column "xLix" description -offset indent -compact .It Li \&Fl Ta command line options (flags) .It Li \&Cm Ta command modifier .It Li \&Ar Ta command argument .It Li \&Ic Ta internal or interactive command .It Li \&Ev Ta environmental variable .It Li \&Pa Ta file system path .El .Pp Semantic markup for function libraries: .Bl -column "xLix" description -offset indent -compact .It Li \&Lb Ta function library name .It Li \&In Ta include file .It Li \&Ft Ta function return type .It Li \&Fn Ta function name .It Li \&Fa Ta function argument type and name .It Li \&Vt Ta variable type .It Li \&Va Ta variable name .It Li \&Dv Ta defined variable or preprocessor constant .It Li \&Er Ta error constant .It Li \&Ev Ta environmental variable .El .Pp Various semantic markup: .Bl -column "xLix" description -offset indent -compact .It Li \&An Ta author name .It Li \&Lk Ta hyperlink .It Li \&Mt Ta Do mailto Dc hyperlink .It Li \&Cd Ta kernel configuration declaration .It Li \&Ms Ta mathematical symbol .It Li \&Tn Ta tradename .El .Pp Physical markup: .Bl -column "xLix" description -offset indent -compact .It Li \&Em Ta italic font or underline .It Li \&Sy Ta boldface font .It Li \&Li Ta typewriter font .El .Pp Text production: .Bl -column "xLix" description -offset indent -compact .It Li \&St Ta reference to a standards document .It Li \&At Ta At No version reference .It Li \&Bx Ta Bx No version reference .It Li \&Bsx Ta Bsx No version reference .It Li \&Nx Ta Nx No version reference .It Li \&Fx Ta Fx No version reference .It Li \&Ox Ta Ox No version reference .It Li \&Dx Ta Dx No version reference .El .Sh ENVIRONMENT .Bl -tag -width MANPAGER .It Ev MANPAGER Any non-empty value of the environment variable .Ev MANPAGER is used instead of the standard pagination program, .Xr more 1 ; see .Xr man 1 for details. Only used if .Fl a or .Fl l is specified. .It Ev MANPATH A colon-separated list of directories to search for manual pages; see .Xr man 1 for details. Overridden by .Fl M , ignored if .Fl l is specified. .It Ev PAGER Specifies the pagination program to use when .Ev MANPAGER is not defined. If neither PAGER nor MANPAGER is defined, .Xr more 1 .Fl s is used. Only used if .Fl a or .Fl l is specified. .El .Sh FILES .Bl -tag -width "/etc/man.conf" -compact .It Pa mandoc.db name of the .Xr makewhatis 8 keyword database .It Pa /etc/man.conf default .Xr man 1 configuration file .El .Sh EXIT STATUS .Ex -std .Sh EXAMPLES Search for .Qq .cf as a substring of manual names and descriptions: .Pp .Dl $ apropos .cf .Pp Include matches for .Qq .cnf and .Qq .conf as well: .Pp .Dl $ apropos .cf .cnf .conf .Pp Search in names and descriptions using a regular expression: .Pp .Dl $ apropos \(aq\(tiset.?[ug]id\(aq .Pp Search for manuals in the library section mentioning both the .Qq optind and the .Qq optarg variables: .Pp .Dl $ apropos \-s 3 Va=optind \-a Va=optarg .Pp Do exactly the same as calling -.Xr whatis 1 +.Nm whatis with the argument .Qq ssh : .Pp .Dl $ apropos \-\- \-i \(aqNm\(ti[[:<:]]ssh[[:>:]]\(aq .Pp The following two invocations are equivalent: .Pp .D1 Li $ apropos -S Ar arch Li -s Ar section expression .Bd -ragged -offset indent .Li $ apropos \e( Ar expression Li \e) .Li -a arch\(ti^( Ns Ar arch Ns Li |any)$ .Li -a sec\(ti^ Ns Ar section Ns Li $ .Ed .Sh SEE ALSO .Xr man 1 , .Xr re_format 7 , .Xr makewhatis 8 .Sh HISTORY Part of the functionality of .Nm whatis was already provided by the former .Nm manwhere utility in .Bx 1 . The .Nm and .Nm whatis utilities first appeared in .Bx 2 . They were rewritten from scratch for .Ox 5.6 . .Pp The .Fl M option and the .Ev MANPATH variable first appeared in .Bx 4.3 ; .Fl m in .Bx 4.3 Reno ; .Fl C in .Bx 4.4 Lite1 ; and .Fl S and .Fl s in .Ox 4.5 for .Nm and in .Ox 5.6 for .Nm whatis . The options .Fl acfhIKklOTWw appeared in .Ox 5.7 . .Sh AUTHORS .An -nosplit .An Bill Joy wrote .Nm manwhere in 1977 and the original .Bx .Nm and .Nm whatis in February 1979. The current version was written by .An Kristaps Dzonsons Aq Mt kristaps@bsd.lv and .An Ingo Schwarze Aq Mt schwarze@openbsd.org . Index: vendor/mdocml/dist/att.c =================================================================== --- vendor/mdocml/dist/att.c (revision 321806) +++ vendor/mdocml/dist/att.c (revision 321807) @@ -1,50 +1,51 @@ -/* $Id: att.c,v 1.15 2015/10/06 18:32:19 schwarze Exp $ */ +/* $Id: att.c,v 1.16 2017/06/24 14:38:32 schwarze Exp $ */ /* * Copyright (c) 2009 Kristaps Dzonsons * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "config.h" #include #include +#include "mandoc.h" #include "roff.h" #include "mdoc.h" #include "libmdoc.h" #define LINE(x, y) \ if (0 == strcmp(p, x)) return(y) const char * mdoc_a2att(const char *p) { LINE("v1", "Version\\~1 AT&T UNIX"); LINE("v2", "Version\\~2 AT&T UNIX"); LINE("v3", "Version\\~3 AT&T UNIX"); LINE("v4", "Version\\~4 AT&T UNIX"); LINE("v5", "Version\\~5 AT&T UNIX"); LINE("v6", "Version\\~6 AT&T UNIX"); LINE("v7", "Version\\~7 AT&T UNIX"); LINE("32v", "Version\\~32V AT&T UNIX"); LINE("III", "AT&T System\\~III UNIX"); LINE("V", "AT&T System\\~V UNIX"); LINE("V.1", "AT&T System\\~V Release\\~1 UNIX"); LINE("V.2", "AT&T System\\~V Release\\~2 UNIX"); LINE("V.3", "AT&T System\\~V Release\\~3 UNIX"); LINE("V.4", "AT&T System\\~V Release\\~4 UNIX"); return NULL; } Index: vendor/mdocml/dist/cgi.c =================================================================== --- vendor/mdocml/dist/cgi.c (revision 321806) +++ vendor/mdocml/dist/cgi.c (revision 321807) @@ -1,1242 +1,1242 @@ -/* $Id: cgi.c,v 1.154 2017/04/19 01:00:03 schwarze Exp $ */ +/* $Id: cgi.c,v 1.156 2017/06/24 14:38:32 schwarze Exp $ */ /* * Copyright (c) 2011, 2012 Kristaps Dzonsons * Copyright (c) 2014, 2015, 2016, 2017 Ingo Schwarze * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "config.h" #include #include #include #if HAVE_ERR #include #endif #include #include #include #include #include #include #include #include #include "mandoc_aux.h" #include "mandoc.h" #include "roff.h" #include "mdoc.h" #include "man.h" #include "main.h" #include "manconf.h" #include "mansearch.h" #include "cgi.h" /* * A query as passed to the search function. */ struct query { char *manpath; /* desired manual directory */ char *arch; /* architecture */ char *sec; /* manual section */ char *query; /* unparsed query expression */ int equal; /* match whole names, not substrings */ }; struct req { struct query q; char **p; /* array of available manpaths */ size_t psz; /* number of available manpaths */ int isquery; /* QUERY_STRING used, not PATH_INFO */ }; enum focus { FOCUS_NONE = 0, FOCUS_QUERY }; static void html_print(const char *); static void html_putchar(char); static int http_decode(char *); static void parse_manpath_conf(struct req *); static void parse_path_info(struct req *req, const char *path); static void parse_query_string(struct req *, const char *); static void pg_error_badrequest(const char *); static void pg_error_internal(void); static void pg_index(const struct req *); static void pg_noresult(const struct req *, const char *); static void pg_redirect(const struct req *, const char *); static void pg_search(const struct req *); static void pg_searchres(const struct req *, struct manpage *, size_t); static void pg_show(struct req *, const char *); static void resp_begin_html(int, const char *, const char *); static void resp_begin_http(int, const char *); static void resp_catman(const struct req *, const char *); static void resp_copy(const char *); static void resp_end_html(void); static void resp_format(const struct req *, const char *); static void resp_searchform(const struct req *, enum focus); static void resp_show(const struct req *, const char *); static void set_query_attr(char **, char **); static int validate_filename(const char *); static int validate_manpath(const struct req *, const char *); static int validate_urifrag(const char *); static const char *scriptname = SCRIPT_NAME; static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9}; static const char *const sec_numbers[] = { "0", "1", "2", "3", "3p", "4", "5", "6", "7", "8", "9" }; static const char *const sec_names[] = { "All Sections", "1 - General Commands", "2 - System Calls", "3 - Library Functions", "3p - Perl Library", "4 - Device Drivers", "5 - File Formats", "6 - Games", "7 - Miscellaneous Information", "8 - System Manager\'s Manual", "9 - Kernel Developer\'s Manual" }; static const int sec_MAX = sizeof(sec_names) / sizeof(char *); static const char *const arch_names[] = { "amd64", "alpha", "armv7", "arm64", "hppa", "i386", "landisk", "loongson", "luna88k", "macppc", "mips64", "octeon", "sgi", "socppc", "sparc64", "amiga", "arc", "armish", "arm32", "atari", "aviion", "beagle", "cats", "hppa64", "hp300", "ia64", "mac68k", "mvme68k", "mvme88k", "mvmeppc", "palm", "pc532", "pegasos", "pmax", "powerpc", "solbourne", "sparc", "sun3", "vax", "wgrisc", "x68k", "zaurus" }; static const int arch_MAX = sizeof(arch_names) / sizeof(char *); /* * Print a character, escaping HTML along the way. * This will pass non-ASCII straight to output: be warned! */ static void html_putchar(char c) { switch (c) { - case ('"'): + case '"': printf("""); break; - case ('&'): + case '&': printf("&"); break; - case ('>'): + case '>': printf(">"); break; - case ('<'): + case '<': printf("<"); break; default: putchar((unsigned char)c); break; } } /* * Call through to html_putchar(). * Accepts NULL strings. */ static void html_print(const char *p) { if (NULL == p) return; while ('\0' != *p) html_putchar(*p++); } /* * Transfer the responsibility for the allocated string *val * to the query structure. */ static void set_query_attr(char **attr, char **val) { free(*attr); if (**val == '\0') { *attr = NULL; free(*val); } else *attr = *val; *val = NULL; } /* * Parse the QUERY_STRING for key-value pairs * and store the values into the query structure. */ static void parse_query_string(struct req *req, const char *qs) { char *key, *val; size_t keysz, valsz; req->isquery = 1; req->q.manpath = NULL; req->q.arch = NULL; req->q.sec = NULL; req->q.query = NULL; req->q.equal = 1; key = val = NULL; while (*qs != '\0') { /* Parse one key. */ keysz = strcspn(qs, "=;&"); key = mandoc_strndup(qs, keysz); qs += keysz; if (*qs != '=') goto next; /* Parse one value. */ valsz = strcspn(++qs, ";&"); val = mandoc_strndup(qs, valsz); qs += valsz; /* Decode and catch encoding errors. */ if ( ! (http_decode(key) && http_decode(val))) goto next; /* Handle key-value pairs. */ if ( ! strcmp(key, "query")) set_query_attr(&req->q.query, &val); else if ( ! strcmp(key, "apropos")) req->q.equal = !strcmp(val, "0"); else if ( ! strcmp(key, "manpath")) { #ifdef COMPAT_OLDURI if ( ! strncmp(val, "OpenBSD ", 8)) { val[7] = '-'; if ('C' == val[8]) val[8] = 'c'; } #endif set_query_attr(&req->q.manpath, &val); } else if ( ! (strcmp(key, "sec") #ifdef COMPAT_OLDURI && strcmp(key, "sektion") #endif )) { if ( ! strcmp(val, "0")) *val = '\0'; set_query_attr(&req->q.sec, &val); } else if ( ! strcmp(key, "arch")) { if ( ! strcmp(val, "default")) *val = '\0'; set_query_attr(&req->q.arch, &val); } /* * The key must be freed in any case. * The val may have been handed over to the query * structure, in which case it is now NULL. */ next: free(key); key = NULL; free(val); val = NULL; if (*qs != '\0') qs++; } } /* * HTTP-decode a string. The standard explanation is that this turns * "%4e+foo" into "n foo" in the regular way. This is done in-place * over the allocated string. */ static int http_decode(char *p) { char hex[3]; char *q; int c; hex[2] = '\0'; q = p; for ( ; '\0' != *p; p++, q++) { if ('%' == *p) { if ('\0' == (hex[0] = *(p + 1))) return 0; if ('\0' == (hex[1] = *(p + 2))) return 0; if (1 != sscanf(hex, "%x", &c)) return 0; if ('\0' == c) return 0; *q = (char)c; p += 2; } else *q = '+' == *p ? ' ' : *p; } *q = '\0'; return 1; } static void resp_begin_http(int code, const char *msg) { if (200 != code) printf("Status: %d %s\r\n", code, msg); printf("Content-Type: text/html; charset=utf-8\r\n" "Cache-Control: no-cache\r\n" "Pragma: no-cache\r\n" "\r\n"); fflush(stdout); } static void resp_copy(const char *filename) { char buf[4096]; ssize_t sz; int fd; if ((fd = open(filename, O_RDONLY)) != -1) { fflush(stdout); while ((sz = read(fd, buf, sizeof(buf))) > 0) write(STDOUT_FILENO, buf, sz); close(fd); } } static void resp_begin_html(int code, const char *msg, const char *file) { char *cp; resp_begin_http(code, msg); printf("\n" "\n" "\n" " \n" " \n" " ", CSS_DIR); if (file != NULL) { if ((cp = strrchr(file, '/')) != NULL) file = cp + 1; if ((cp = strrchr(file, '.')) != NULL) { printf("%.*s(%s) - ", (int)(cp - file), file, cp + 1); } else printf("%s - ", file); } printf("%s\n" "\n" "\n", CUSTOMIZE_TITLE); resp_copy(MAN_DIR "/header.html"); } static void resp_end_html(void) { resp_copy(MAN_DIR "/footer.html"); puts("\n" ""); } static void resp_searchform(const struct req *req, enum focus focus) { int i; printf("
\n" "
\n" " Manual Page Search Parameters\n", scriptname); /* Write query input box. */ printf(" q.query != NULL) html_print(req->q.query); printf( "\" size=\"40\""); if (focus == FOCUS_QUERY) printf(" autofocus"); puts(">"); /* Write submission buttons. */ printf( " \n" " \n" "
\n"); /* Write section selector. */ puts(" "); /* Write architecture selector. */ printf( " "); /* Write manpath selector. */ if (req->psz > 1) { puts(" "); } puts("
\n" "
"); } static int validate_urifrag(const char *frag) { while ('\0' != *frag) { if ( ! (isalnum((unsigned char)*frag) || '-' == *frag || '.' == *frag || '/' == *frag || '_' == *frag)) return 0; frag++; } return 1; } static int validate_manpath(const struct req *req, const char* manpath) { size_t i; for (i = 0; i < req->psz; i++) if ( ! strcmp(manpath, req->p[i])) return 1; return 0; } static int validate_filename(const char *file) { if ('.' == file[0] && '/' == file[1]) file += 2; return ! (strstr(file, "../") || strstr(file, "/..") || (strncmp(file, "man", 3) && strncmp(file, "cat", 3))); } static void pg_index(const struct req *req) { resp_begin_html(200, NULL, NULL); resp_searchform(req, FOCUS_QUERY); printf("

\n" "This web interface is documented in the\n" "man.cgi(8)\n" "manual, and the\n" "apropos(1)\n" "manual explains the query syntax.\n" "

\n", scriptname, *scriptname == '\0' ? "" : "/", scriptname, *scriptname == '\0' ? "" : "/"); resp_end_html(); } static void pg_noresult(const struct req *req, const char *msg) { resp_begin_html(200, NULL, NULL); resp_searchform(req, FOCUS_QUERY); puts("

"); puts(msg); puts("

"); resp_end_html(); } static void pg_error_badrequest(const char *msg) { resp_begin_html(400, "Bad Request", NULL); puts("

Bad Request

\n" "

\n"); puts(msg); printf("Try again from the\n" "main page.\n" "

", scriptname); resp_end_html(); } static void pg_error_internal(void) { resp_begin_html(500, "Internal Server Error", NULL); puts("

Internal Server Error

"); resp_end_html(); } static void pg_redirect(const struct req *req, const char *name) { printf("Status: 303 See Other\r\n" "Location: /"); if (*scriptname != '\0') printf("%s/", scriptname); if (strcmp(req->q.manpath, req->p[0])) printf("%s/", req->q.manpath); if (req->q.arch != NULL) printf("%s/", req->q.arch); printf("%s", name); if (req->q.sec != NULL) printf(".%s", req->q.sec); printf("\r\nContent-Type: text/html; charset=utf-8\r\n\r\n"); } static void pg_searchres(const struct req *req, struct manpage *r, size_t sz) { char *arch, *archend; const char *sec; size_t i, iuse; int archprio, archpriouse; int prio, priouse; for (i = 0; i < sz; i++) { if (validate_filename(r[i].file)) continue; warnx("invalid filename %s in %s database", r[i].file, req->q.manpath); pg_error_internal(); return; } if (req->isquery && sz == 1) { /* * If we have just one result, then jump there now * without any delay. */ printf("Status: 303 See Other\r\n" "Location: /"); if (*scriptname != '\0') printf("%s/", scriptname); if (strcmp(req->q.manpath, req->p[0])) printf("%s/", req->q.manpath); printf("%s\r\n" "Content-Type: text/html; charset=utf-8\r\n\r\n", r[0].file); return; } /* * In man(1) mode, show one of the pages * even if more than one is found. */ iuse = 0; if (req->q.equal || sz == 1) { priouse = 20; archpriouse = 3; for (i = 0; i < sz; i++) { sec = r[i].file; sec += strcspn(sec, "123456789"); if (sec[0] == '\0') continue; prio = sec_prios[sec[0] - '1']; if (sec[1] != '/') prio += 10; if (req->q.arch == NULL) { archprio = ((arch = strchr(sec + 1, '/')) == NULL) ? 3 : ((archend = strchr(arch + 1, '/')) == NULL) ? 0 : strncmp(arch, "amd64/", archend - arch) ? 2 : 1; if (archprio < archpriouse) { archpriouse = archprio; priouse = prio; iuse = i; continue; } if (archprio > archpriouse) continue; } if (prio >= priouse) continue; priouse = prio; iuse = i; } resp_begin_html(200, NULL, r[iuse].file); } else resp_begin_html(200, NULL, NULL); resp_searchform(req, req->q.equal || sz == 1 ? FOCUS_NONE : FOCUS_QUERY); if (sz > 1) { puts(""); for (i = 0; i < sz; i++) { printf(" \n" " \n" " \n" " "); } puts("
" "q.manpath, req->p[0])) printf("%s/", req->q.manpath); printf("%s\">", r[i].file); html_print(r[i].names); printf(""); html_print(r[i].output); puts("
"); } if (req->q.equal || sz == 1) { puts("
"); resp_show(req, r[iuse].file); } resp_end_html(); } static void resp_catman(const struct req *req, const char *file) { FILE *f; char *p; size_t sz; ssize_t len; int i; int italic, bold; if ((f = fopen(file, "r")) == NULL) { puts("

You specified an invalid manual file.

"); return; } puts("
\n" "
");
 
 	p = NULL;
 	sz = 0;
 
 	while ((len = getline(&p, &sz, f)) != -1) {
 		bold = italic = 0;
 		for (i = 0; i < len - 1; i++) {
 			/*
 			 * This means that the catpage is out of state.
 			 * Ignore it and keep going (although the
 			 * catpage is bogus).
 			 */
 
 			if ('\b' == p[i] || '\n' == p[i])
 				continue;
 
 			/*
 			 * Print a regular character.
 			 * Close out any bold/italic scopes.
 			 * If we're in back-space mode, make sure we'll
 			 * have something to enter when we backspace.
 			 */
 
 			if ('\b' != p[i + 1]) {
 				if (italic)
 					printf("");
 				if (bold)
 					printf("");
 				italic = bold = 0;
 				html_putchar(p[i]);
 				continue;
 			} else if (i + 2 >= len)
 				continue;
 
 			/* Italic mode. */
 
 			if ('_' == p[i]) {
 				if (bold)
 					printf("");
 				if ( ! italic)
 					printf("");
 				bold = 0;
 				italic = 1;
 				i += 2;
 				html_putchar(p[i]);
 				continue;
 			}
 
 			/*
 			 * Handle funny behaviour troff-isms.
 			 * These grok'd from the original man2html.c.
 			 */
 
 			if (('+' == p[i] && 'o' == p[i + 2]) ||
 					('o' == p[i] && '+' == p[i + 2]) ||
 					('|' == p[i] && '=' == p[i + 2]) ||
 					('=' == p[i] && '|' == p[i + 2]) ||
 					('*' == p[i] && '=' == p[i + 2]) ||
 					('=' == p[i] && '*' == p[i + 2]) ||
 					('*' == p[i] && '|' == p[i + 2]) ||
 					('|' == p[i] && '*' == p[i + 2]))  {
 				if (italic)
 					printf("");
 				if (bold)
 					printf("");
 				italic = bold = 0;
 				putchar('*');
 				i += 2;
 				continue;
 			} else if (('|' == p[i] && '-' == p[i + 2]) ||
 					('-' == p[i] && '|' == p[i + 1]) ||
 					('+' == p[i] && '-' == p[i + 1]) ||
 					('-' == p[i] && '+' == p[i + 1]) ||
 					('+' == p[i] && '|' == p[i + 1]) ||
 					('|' == p[i] && '+' == p[i + 1]))  {
 				if (italic)
 					printf("");
 				if (bold)
 					printf("");
 				italic = bold = 0;
 				putchar('+');
 				i += 2;
 				continue;
 			}
 
 			/* Bold mode. */
 
 			if (italic)
 				printf("");
 			if ( ! bold)
 				printf("");
 			bold = 1;
 			italic = 0;
 			i += 2;
 			html_putchar(p[i]);
 		}
 
 		/*
 		 * Clean up the last character.
 		 * We can get to a newline; don't print that.
 		 */
 
 		if (italic)
 			printf("");
 		if (bold)
 			printf("");
 
 		if (i == len - 1 && p[i] != '\n')
 			html_putchar(p[i]);
 
 		putchar('\n');
 	}
 	free(p);
 
 	puts("
\n" "
"); fclose(f); } static void resp_format(const struct req *req, const char *file) { struct manoutput conf; struct mparse *mp; struct roff_man *man; void *vp; int fd; int usepath; if (-1 == (fd = open(file, O_RDONLY, 0))) { puts("

You specified an invalid manual file.

"); return; } mchars_alloc(); mp = mparse_alloc(MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1, - MANDOCLEVEL_BADARG, NULL, req->q.manpath); + MANDOCERR_MAX, NULL, MANDOC_OS_OTHER, req->q.manpath); mparse_readfd(mp, fd, file); close(fd); memset(&conf, 0, sizeof(conf)); conf.fragment = 1; conf.style = mandoc_strdup(CSS_DIR "/mandoc.css"); usepath = strcmp(req->q.manpath, req->p[0]); mandoc_asprintf(&conf.man, "/%s%s%s%s%%N.%%S", scriptname, *scriptname == '\0' ? "" : "/", usepath ? req->q.manpath : "", usepath ? "/" : ""); mparse_result(mp, &man, NULL); if (man == NULL) { warnx("fatal mandoc error: %s/%s", req->q.manpath, file); pg_error_internal(); mparse_free(mp); mchars_free(); return; } vp = html_alloc(&conf); if (man->macroset == MACROSET_MDOC) { mdoc_validate(man); html_mdoc(vp, man); } else { man_validate(man); html_man(vp, man); } html_free(vp); mparse_free(mp); mchars_free(); free(conf.man); free(conf.style); } static void resp_show(const struct req *req, const char *file) { if ('.' == file[0] && '/' == file[1]) file += 2; if ('c' == *file) resp_catman(req, file); else resp_format(req, file); } static void pg_show(struct req *req, const char *fullpath) { char *manpath; const char *file; if ((file = strchr(fullpath, '/')) == NULL) { pg_error_badrequest( "You did not specify a page to show."); return; } manpath = mandoc_strndup(fullpath, file - fullpath); file++; if ( ! validate_manpath(req, manpath)) { pg_error_badrequest( "You specified an invalid manpath."); free(manpath); return; } /* * Begin by chdir()ing into the manpath. * This way we can pick up the database files, which are * relative to the manpath root. */ if (chdir(manpath) == -1) { warn("chdir %s", manpath); pg_error_internal(); free(manpath); return; } free(manpath); if ( ! validate_filename(file)) { pg_error_badrequest( "You specified an invalid manual file."); return; } resp_begin_html(200, NULL, file); resp_searchform(req, FOCUS_NONE); resp_show(req, file); resp_end_html(); } static void pg_search(const struct req *req) { struct mansearch search; struct manpaths paths; struct manpage *res; char **argv; char *query, *rp, *wp; size_t ressz; int argc; /* * Begin by chdir()ing into the root of the manpath. * This way we can pick up the database files, which are * relative to the manpath root. */ if (chdir(req->q.manpath) == -1) { warn("chdir %s", req->q.manpath); pg_error_internal(); return; } search.arch = req->q.arch; search.sec = req->q.sec; search.outkey = "Nd"; search.argmode = req->q.equal ? ARG_NAME : ARG_EXPR; search.firstmatch = 1; paths.sz = 1; paths.paths = mandoc_malloc(sizeof(char *)); paths.paths[0] = mandoc_strdup("."); /* * Break apart at spaces with backslash-escaping. */ argc = 0; argv = NULL; rp = query = mandoc_strdup(req->q.query); for (;;) { while (isspace((unsigned char)*rp)) rp++; if (*rp == '\0') break; argv = mandoc_reallocarray(argv, argc + 1, sizeof(char *)); argv[argc++] = wp = rp; for (;;) { if (isspace((unsigned char)*rp)) { *wp = '\0'; rp++; break; } if (rp[0] == '\\' && rp[1] != '\0') rp++; if (wp != rp) *wp = *rp; if (*rp == '\0') break; wp++; rp++; } } res = NULL; ressz = 0; if (req->isquery && req->q.equal && argc == 1) pg_redirect(req, argv[0]); else if (mansearch(&search, &paths, argc, argv, &res, &ressz) == 0) pg_noresult(req, "You entered an invalid query."); else if (ressz == 0) pg_noresult(req, "No results found."); else pg_searchres(req, res, ressz); free(query); mansearch_free(res, ressz); free(paths.paths[0]); free(paths.paths); } int main(void) { struct req req; struct itimerval itimer; const char *path; const char *querystring; int i; #if HAVE_PLEDGE /* * The "rpath" pledge could be revoked after mparse_readfd() * if the file desciptor to "/footer.html" would be opened * up front, but it's probably not worth the complication * of the code it would cause: it would require scattering * pledge() calls in multiple low-level resp_*() functions. */ if (pledge("stdio rpath", NULL) == -1) { warn("pledge"); pg_error_internal(); return EXIT_FAILURE; } #endif /* Poor man's ReDoS mitigation. */ itimer.it_value.tv_sec = 2; itimer.it_value.tv_usec = 0; itimer.it_interval.tv_sec = 2; itimer.it_interval.tv_usec = 0; if (setitimer(ITIMER_VIRTUAL, &itimer, NULL) == -1) { warn("setitimer"); pg_error_internal(); return EXIT_FAILURE; } /* * First we change directory into the MAN_DIR so that * subsequent scanning for manpath directories is rooted * relative to the same position. */ if (chdir(MAN_DIR) == -1) { warn("MAN_DIR: %s", MAN_DIR); pg_error_internal(); return EXIT_FAILURE; } memset(&req, 0, sizeof(struct req)); req.q.equal = 1; parse_manpath_conf(&req); /* Parse the path info and the query string. */ if ((path = getenv("PATH_INFO")) == NULL) path = ""; else if (*path == '/') path++; if (*path != '\0') { parse_path_info(&req, path); if (req.q.manpath == NULL || req.q.sec == NULL || *req.q.query == '\0' || access(path, F_OK) == -1) path = ""; } else if ((querystring = getenv("QUERY_STRING")) != NULL) parse_query_string(&req, querystring); /* Validate parsed data and add defaults. */ if (req.q.manpath == NULL) req.q.manpath = mandoc_strdup(req.p[0]); else if ( ! validate_manpath(&req, req.q.manpath)) { pg_error_badrequest( "You specified an invalid manpath."); return EXIT_FAILURE; } if ( ! (NULL == req.q.arch || validate_urifrag(req.q.arch))) { pg_error_badrequest( "You specified an invalid architecture."); return EXIT_FAILURE; } /* Dispatch to the three different pages. */ if ('\0' != *path) pg_show(&req, path); else if (NULL != req.q.query) pg_search(&req); else pg_index(&req); free(req.q.manpath); free(req.q.arch); free(req.q.sec); free(req.q.query); for (i = 0; i < (int)req.psz; i++) free(req.p[i]); free(req.p); return EXIT_SUCCESS; } /* * If PATH_INFO is not a file name, translate it to a query. */ static void parse_path_info(struct req *req, const char *path) { char *dir[4]; int i; req->isquery = 0; req->q.equal = 1; req->q.manpath = mandoc_strdup(path); req->q.arch = NULL; /* Mandatory manual page name. */ if ((req->q.query = strrchr(req->q.manpath, '/')) == NULL) { req->q.query = req->q.manpath; req->q.manpath = NULL; } else *req->q.query++ = '\0'; /* Optional trailing section. */ if ((req->q.sec = strrchr(req->q.query, '.')) != NULL) { if(isdigit((unsigned char)req->q.sec[1])) { *req->q.sec++ = '\0'; req->q.sec = mandoc_strdup(req->q.sec); } else req->q.sec = NULL; } /* Handle the case of name[.section] only. */ if (req->q.manpath == NULL) return; req->q.query = mandoc_strdup(req->q.query); /* Split directory components. */ dir[i = 0] = req->q.manpath; while ((dir[i + 1] = strchr(dir[i], '/')) != NULL) { if (++i == 3) { pg_error_badrequest( "You specified too many directory components."); exit(EXIT_FAILURE); } *dir[i]++ = '\0'; } /* Optional manpath. */ if ((i = validate_manpath(req, req->q.manpath)) == 0) req->q.manpath = NULL; else if (dir[1] == NULL) return; /* Optional section. */ if (strncmp(dir[i], "man", 3) == 0) { free(req->q.sec); req->q.sec = mandoc_strdup(dir[i++] + 3); } if (dir[i] == NULL) { if (req->q.manpath == NULL) free(dir[0]); return; } if (dir[i + 1] != NULL) { pg_error_badrequest( "You specified an invalid directory component."); exit(EXIT_FAILURE); } /* Optional architecture. */ if (i) { req->q.arch = mandoc_strdup(dir[i]); if (req->q.manpath == NULL) free(dir[0]); } else req->q.arch = dir[0]; } /* * Scan for indexable paths. */ static void parse_manpath_conf(struct req *req) { FILE *fp; char *dp; size_t dpsz; ssize_t len; if ((fp = fopen("manpath.conf", "r")) == NULL) { warn("%s/manpath.conf", MAN_DIR); pg_error_internal(); exit(EXIT_FAILURE); } dp = NULL; dpsz = 0; while ((len = getline(&dp, &dpsz, fp)) != -1) { if (dp[len - 1] == '\n') dp[--len] = '\0'; req->p = mandoc_realloc(req->p, (req->psz + 1) * sizeof(char *)); if ( ! validate_urifrag(dp)) { warnx("%s/manpath.conf contains " "unsafe path \"%s\"", MAN_DIR, dp); pg_error_internal(); exit(EXIT_FAILURE); } if (strchr(dp, '/') != NULL) { warnx("%s/manpath.conf contains " "path with slash \"%s\"", MAN_DIR, dp); pg_error_internal(); exit(EXIT_FAILURE); } req->p[req->psz++] = dp; dp = NULL; dpsz = 0; } free(dp); if (req->p == NULL) { warnx("%s/manpath.conf is empty", MAN_DIR); pg_error_internal(); exit(EXIT_FAILURE); } } Index: vendor/mdocml/dist/chars.c =================================================================== --- vendor/mdocml/dist/chars.c (revision 321806) +++ vendor/mdocml/dist/chars.c (revision 321807) @@ -1,510 +1,511 @@ -/* $Id: chars.c,v 1.70 2017/06/02 12:43:52 schwarze Exp $ */ +/* $Id: chars.c,v 1.71 2017/06/14 20:57:07 schwarze Exp $ */ /* * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons * Copyright (c) 2011, 2014, 2015, 2017 Ingo Schwarze * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "config.h" #include #include #include #include #include #include #include #include "mandoc.h" #include "mandoc_aux.h" #include "mandoc_ohash.h" #include "libmandoc.h" struct ln { const char roffcode[16]; const char *ascii; int unicode; }; /* Special break control characters. */ static const char ascii_nbrsp[2] = { ASCII_NBRSP, '\0' }; static const char ascii_break[2] = { ASCII_BREAK, '\0' }; static struct ln lines[] = { /* Spacing. */ { " ", ascii_nbrsp, 0x00a0 }, { "~", ascii_nbrsp, 0x00a0 }, { "0", " ", 0x2002 }, { "|", "", 0 }, { "^", "", 0 }, { "&", "", 0 }, { "%", "", 0 }, { ":", ascii_break, 0 }, /* XXX The following three do not really belong here. */ { "t", "", 0 }, { "c", "", 0 }, { "}", "", 0 }, /* Lines. */ { "ba", "|", 0x007c }, { "br", "|", 0x2502 }, { "ul", "_", 0x005f }, + { "ru", "_", 0x005f }, { "rn", "-", 0x203e }, { "bb", "|", 0x00a6 }, { "sl", "/", 0x002f }, { "rs", "\\", 0x005c }, /* Text markers. */ { "ci", "O", 0x25cb }, { "bu", "+\bo", 0x2022 }, { "dd", "|\b=", 0x2021 }, { "dg", "|\b-", 0x2020 }, { "lz", "<>", 0x25ca }, { "sq", "[]", 0x25a1 }, { "ps", "", 0x00b6 }, { "sc", "", 0x00a7 }, { "lh", "<=", 0x261c }, { "rh", "=>", 0x261e }, { "at", "@", 0x0040 }, { "sh", "#", 0x0023 }, { "CR", "_|", 0x21b5 }, { "OK", "\\/", 0x2713 }, { "CL", "", 0x2663 }, { "SP", "", 0x2660 }, { "HE", "", 0x2665 }, { "DI", "", 0x2666 }, /* Legal symbols. */ { "co", "(C)", 0x00a9 }, { "rg", "(R)", 0x00ae }, { "tm", "tm", 0x2122 }, /* Punctuation. */ { "em", "--", 0x2014 }, { "en", "-", 0x2013 }, { "hy", "-", 0x2010 }, { "e", "\\", 0x005c }, { ".", ".", 0x002e }, { "r!", "!", 0x00a1 }, { "r?", "?", 0x00bf }, /* Quotes. */ { "Bq", ",,", 0x201e }, { "bq", ",", 0x201a }, { "lq", "\"", 0x201c }, { "rq", "\"", 0x201d }, { "Lq", "\"", 0x201c }, { "Rq", "\"", 0x201d }, { "oq", "`", 0x2018 }, { "cq", "\'", 0x2019 }, { "aq", "\'", 0x0027 }, { "dq", "\"", 0x0022 }, { "Fo", "<<", 0x00ab }, { "Fc", ">>", 0x00bb }, { "fo", "<", 0x2039 }, { "fc", ">", 0x203a }, /* Brackets. */ { "lB", "[", 0x005b }, { "rB", "]", 0x005d }, { "lC", "{", 0x007b }, { "rC", "}", 0x007d }, { "la", "<", 0x27e8 }, { "ra", ">", 0x27e9 }, { "bv", "|", 0x23aa }, { "braceex", "|", 0x23aa }, { "bracketlefttp", "|", 0x23a1 }, { "bracketleftbt", "|", 0x23a3 }, { "bracketleftex", "|", 0x23a2 }, { "bracketrighttp", "|", 0x23a4 }, { "bracketrightbt", "|", 0x23a6 }, { "bracketrightex", "|", 0x23a5 }, { "lt", ",-", 0x23a7 }, { "bracelefttp", ",-", 0x23a7 }, { "lk", "{", 0x23a8 }, { "braceleftmid", "{", 0x23a8 }, { "lb", "`-", 0x23a9 }, { "braceleftbt", "`-", 0x23a9 }, { "braceleftex", "|", 0x23aa }, { "rt", "-.", 0x23ab }, { "bracerighttp", "-.", 0x23ab }, { "rk", "}", 0x23ac }, { "bracerightmid", "}", 0x23ac }, { "rb", "-\'", 0x23ad }, { "bracerightbt", "-\'", 0x23ad }, { "bracerightex", "|", 0x23aa }, { "parenlefttp", "/", 0x239b }, { "parenleftbt", "\\", 0x239d }, { "parenleftex", "|", 0x239c }, { "parenrighttp", "\\", 0x239e }, { "parenrightbt", "/", 0x23a0 }, { "parenrightex", "|", 0x239f }, /* Arrows and lines. */ { "<-", "<-", 0x2190 }, { "->", "->", 0x2192 }, { "<>", "<->", 0x2194 }, { "da", "|\bv", 0x2193 }, { "ua", "|\b^", 0x2191 }, { "va", "^v", 0x2195 }, { "lA", "<=", 0x21d0 }, { "rA", "=>", 0x21d2 }, { "hA", "<=>", 0x21d4 }, { "uA", "=\b^", 0x21d1 }, { "dA", "=\bv", 0x21d3 }, { "vA", "^=v", 0x21d5 }, { "an", "-", 0x23af }, /* Logic. */ { "AN", "^", 0x2227 }, { "OR", "v", 0x2228 }, { "no", "~", 0x00ac }, { "tno", "~", 0x00ac }, { "te", "3", 0x2203 }, { "fa", "-\bV", 0x2200 }, { "st", "-)", 0x220b }, { "tf", ".:.", 0x2234 }, { "3d", ".:.", 0x2234 }, { "or", "|", 0x007c }, /* Mathematicals. */ { "pl", "+", 0x002b }, { "mi", "-", 0x2212 }, { "-", "-", 0x002d }, { "-+", "-+", 0x2213 }, { "+-", "+-", 0x00b1 }, { "t+-", "+-", 0x00b1 }, { "pc", ".", 0x00b7 }, { "md", ".", 0x22c5 }, { "mu", "x", 0x00d7 }, { "tmu", "x", 0x00d7 }, { "c*", "O\bx", 0x2297 }, { "c+", "O\b+", 0x2295 }, { "di", "-:-", 0x00f7 }, { "tdi", "-:-", 0x00f7 }, { "f/", "/", 0x2044 }, { "**", "*", 0x2217 }, { "<=", "<=", 0x2264 }, { ">=", ">=", 0x2265 }, { "<<", "<<", 0x226a }, { ">>", ">>", 0x226b }, { "eq", "=", 0x003d }, { "!=", "!=", 0x2260 }, { "==", "==", 0x2261 }, { "ne", "!==", 0x2262 }, { "ap", "~", 0x223c }, { "|=", "-~", 0x2243 }, { "=~", "=~", 0x2245 }, { "~~", "~~", 0x2248 }, { "~=", "~=", 0x2248 }, { "pt", "oc", 0x221d }, { "es", "{}", 0x2205 }, { "mo", "E", 0x2208 }, { "nm", "!E", 0x2209 }, { "sb", "(=", 0x2282 }, { "nb", "(!=", 0x2284 }, { "sp", "=)", 0x2283 }, { "nc", "!=)", 0x2285 }, { "ib", "(=\b_", 0x2286 }, { "ip", "=\b_)", 0x2287 }, { "ca", "(^)", 0x2229 }, { "cu", "U", 0x222a }, { "/_", "_\b/", 0x2220 }, { "pp", "_\b|", 0x22a5 }, { "is", "'\b,\bI", 0x222b }, { "integral", "'\b,\bI", 0x222b }, { "sum", "E", 0x2211 }, { "product", "TT", 0x220f }, { "coproduct", "U", 0x2210 }, { "gr", "V", 0x2207 }, { "sr", "\\/", 0x221a }, { "sqrt", "\\/", 0x221a }, { "lc", "|~", 0x2308 }, { "rc", "~|", 0x2309 }, { "lf", "|_", 0x230a }, { "rf", "_|", 0x230b }, { "if", "oo", 0x221e }, { "Ah", "N", 0x2135 }, { "Im", "I", 0x2111 }, { "Re", "R", 0x211c }, { "wp", "P", 0x2118 }, { "pd", "a", 0x2202 }, { "-h", "/h", 0x210f }, { "hbar", "/h", 0x210f }, { "12", "1/2", 0x00bd }, { "14", "1/4", 0x00bc }, { "34", "3/4", 0x00be }, { "18", "1/8", 0x215B }, { "38", "3/8", 0x215C }, { "58", "5/8", 0x215D }, { "78", "7/8", 0x215E }, { "S1", "1", 0x00B9 }, { "S2", "2", 0x00B2 }, { "S3", "3", 0x00B3 }, /* Ligatures. */ { "ff", "ff", 0xfb00 }, { "fi", "fi", 0xfb01 }, { "fl", "fl", 0xfb02 }, { "Fi", "ffi", 0xfb03 }, { "Fl", "ffl", 0xfb04 }, { "AE", "AE", 0x00c6 }, { "ae", "ae", 0x00e6 }, { "OE", "OE", 0x0152 }, { "oe", "oe", 0x0153 }, { "ss", "ss", 0x00df }, { "IJ", "IJ", 0x0132 }, { "ij", "ij", 0x0133 }, /* Accents. */ { "a\"", "\"", 0x02dd }, { "a-", "-", 0x00af }, { "a.", ".", 0x02d9 }, { "a^", "^", 0x005e }, { "aa", "\'", 0x00b4 }, { "\'", "\'", 0x00b4 }, { "ga", "`", 0x0060 }, { "`", "`", 0x0060 }, { "ab", "'\b`", 0x02d8 }, { "ac", ",", 0x00b8 }, { "ad", "\"", 0x00a8 }, { "ah", "v", 0x02c7 }, { "ao", "o", 0x02da }, { "a~", "~", 0x007e }, { "ho", ",", 0x02db }, { "ha", "^", 0x005e }, { "ti", "~", 0x007e }, /* Accented letters. */ { "'A", "'\bA", 0x00c1 }, { "'E", "'\bE", 0x00c9 }, { "'I", "'\bI", 0x00cd }, { "'O", "'\bO", 0x00d3 }, { "'U", "'\bU", 0x00da }, { "'a", "'\ba", 0x00e1 }, { "'e", "'\be", 0x00e9 }, { "'i", "'\bi", 0x00ed }, { "'o", "'\bo", 0x00f3 }, { "'u", "'\bu", 0x00fa }, { "`A", "`\bA", 0x00c0 }, { "`E", "`\bE", 0x00c8 }, { "`I", "`\bI", 0x00cc }, { "`O", "`\bO", 0x00d2 }, { "`U", "`\bU", 0x00d9 }, { "`a", "`\ba", 0x00e0 }, { "`e", "`\be", 0x00e8 }, { "`i", "`\bi", 0x00ec }, { "`o", "`\bo", 0x00f2 }, { "`u", "`\bu", 0x00f9 }, { "~A", "~\bA", 0x00c3 }, { "~N", "~\bN", 0x00d1 }, { "~O", "~\bO", 0x00d5 }, { "~a", "~\ba", 0x00e3 }, { "~n", "~\bn", 0x00f1 }, { "~o", "~\bo", 0x00f5 }, { ":A", "\"\bA", 0x00c4 }, { ":E", "\"\bE", 0x00cb }, { ":I", "\"\bI", 0x00cf }, { ":O", "\"\bO", 0x00d6 }, { ":U", "\"\bU", 0x00dc }, { ":a", "\"\ba", 0x00e4 }, { ":e", "\"\be", 0x00eb }, { ":i", "\"\bi", 0x00ef }, { ":o", "\"\bo", 0x00f6 }, { ":u", "\"\bu", 0x00fc }, { ":y", "\"\by", 0x00ff }, { "^A", "^\bA", 0x00c2 }, { "^E", "^\bE", 0x00ca }, { "^I", "^\bI", 0x00ce }, { "^O", "^\bO", 0x00d4 }, { "^U", "^\bU", 0x00db }, { "^a", "^\ba", 0x00e2 }, { "^e", "^\be", 0x00ea }, { "^i", "^\bi", 0x00ee }, { "^o", "^\bo", 0x00f4 }, { "^u", "^\bu", 0x00fb }, { ",C", ",\bC", 0x00c7 }, { ",c", ",\bc", 0x00e7 }, { "/L", "/\bL", 0x0141 }, { "/l", "/\bl", 0x0142 }, { "/O", "/\bO", 0x00d8 }, { "/o", "/\bo", 0x00f8 }, { "oA", "o\bA", 0x00c5 }, { "oa", "o\ba", 0x00e5 }, /* Special letters. */ { "-D", "-\bD", 0x00d0 }, { "Sd", "d", 0x00f0 }, { "TP", "Th", 0x00de }, { "Tp", "th", 0x00fe }, { ".i", "i", 0x0131 }, { ".j", "j", 0x0237 }, /* Currency. */ { "Do", "$", 0x0024 }, { "ct", "/\bc", 0x00a2 }, { "Eu", "EUR", 0x20ac }, { "eu", "EUR", 0x20ac }, { "Ye", "=\bY", 0x00a5 }, { "Po", "GBP", 0x00a3 }, { "Cs", "o\bx", 0x00a4 }, { "Fn", ",\bf", 0x0192 }, /* Units. */ { "de", "", 0x00b0 }, { "%0", "%o", 0x2030 }, { "fm", "\'", 0x2032 }, { "sd", "''", 0x2033 }, { "mc", ",\bu", 0x00b5 }, { "Of", "_\ba", 0x00aa }, { "Om", "_\bo", 0x00ba }, /* Greek characters. */ { "*A", "A", 0x0391 }, { "*B", "B", 0x0392 }, { "*G", "G", 0x0393 }, { "*D", "_\b/_\b\\", 0x0394 }, { "*E", "E", 0x0395 }, { "*Z", "Z", 0x0396 }, { "*Y", "H", 0x0397 }, { "*H", "-\bO", 0x0398 }, { "*I", "I", 0x0399 }, { "*K", "K", 0x039a }, { "*L", "/\\", 0x039b }, { "*M", "M", 0x039c }, { "*N", "N", 0x039d }, { "*C", "_\bH", 0x039e }, { "*O", "O", 0x039f }, { "*P", "TT", 0x03a0 }, { "*R", "P", 0x03a1 }, { "*S", "S", 0x03a3 }, { "*T", "T", 0x03a4 }, { "*U", "Y", 0x03a5 }, { "*F", "I\bO", 0x03a6 }, { "*X", "X", 0x03a7 }, { "*Q", "I\bY", 0x03a8 }, { "*W", "_\bO", 0x03a9 }, { "*a", "a", 0x03b1 }, { "*b", "B", 0x03b2 }, { "*g", "y", 0x03b3 }, { "*d", "d", 0x03b4 }, { "*e", "e", 0x03b5 }, { "*z", ",\bC", 0x03b6 }, { "*y", "n", 0x03b7 }, { "*h", "-\b0", 0x03b8 }, { "*i", "i", 0x03b9 }, { "*k", "k", 0x03ba }, { "*l", ">\b\\", 0x03bb }, { "*m", ",\bu", 0x03bc }, { "*n", "v", 0x03bd }, { "*c", ",\bE", 0x03be }, { "*o", "o", 0x03bf }, { "*p", "-\bn", 0x03c0 }, { "*r", "p", 0x03c1 }, { "*s", "-\bo", 0x03c3 }, { "*t", "~\bt", 0x03c4 }, { "*u", "u", 0x03c5 }, { "*f", "|\bo", 0x03d5 }, { "*x", "x", 0x03c7 }, { "*q", "|\bu", 0x03c8 }, { "*w", "w", 0x03c9 }, { "+h", "-\b0", 0x03d1 }, { "+f", "|\bo", 0x03c6 }, { "+p", "-\bw", 0x03d6 }, { "+e", "e", 0x03f5 }, { "ts", "s", 0x03c2 }, }; static struct ohash mchars; void mchars_free(void) { ohash_delete(&mchars); } void mchars_alloc(void) { size_t i; unsigned int slot; mandoc_ohash_init(&mchars, 9, offsetof(struct ln, roffcode)); for (i = 0; i < sizeof(lines)/sizeof(lines[0]); i++) { slot = ohash_qlookup(&mchars, lines[i].roffcode); assert(ohash_find(&mchars, slot) == NULL); ohash_insert(&mchars, slot, lines + i); } } int mchars_spec2cp(const char *p, size_t sz) { const struct ln *ln; const char *end; end = p + sz; ln = ohash_find(&mchars, ohash_qlookupi(&mchars, p, &end)); return ln != NULL ? ln->unicode : sz == 1 ? (unsigned char)*p : -1; } int mchars_num2char(const char *p, size_t sz) { int i; i = mandoc_strntoi(p, sz, 10); return i >= 0 && i < 256 ? i : -1; } int mchars_num2uc(const char *p, size_t sz) { int i; i = mandoc_strntoi(p, sz, 16); assert(i >= 0 && i <= 0x10FFFF); return i; } const char * mchars_spec2str(const char *p, size_t sz, size_t *rsz) { const struct ln *ln; const char *end; end = p + sz; ln = ohash_find(&mchars, ohash_qlookupi(&mchars, p, &end)); if (ln == NULL) { *rsz = 1; return sz == 1 ? p : NULL; } *rsz = strlen(ln->ascii); return ln->ascii; } const char * mchars_uc2str(int uc) { size_t i; for (i = 0; i < sizeof(lines)/sizeof(lines[0]); i++) if (uc == lines[i].unicode) return lines[i].ascii; return ""; } Index: vendor/mdocml/dist/compat_recallocarray.c =================================================================== --- vendor/mdocml/dist/compat_recallocarray.c (nonexistent) +++ vendor/mdocml/dist/compat_recallocarray.c (revision 321807) @@ -0,0 +1,108 @@ +#include "config.h" + +#if HAVE_RECALLOCARRAY + +int dummy; + +#else + +/* $Id: compat_recallocarray.c,v 1.1 2017/06/12 19:05:47 schwarze Exp $ */ +/* $OpenBSD: malloc.c,v 1.225 2017/05/13 07:11:29 otto Exp $ */ +/* + * Copyright (c) 2017 Otto Moerbeek + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include +#include +#include +#include +#include + +/* + * This is sqrt(SIZE_MAX+1), as s1*s2 <= SIZE_MAX + * if both s1 < MUL_NO_OVERFLOW and s2 < MUL_NO_OVERFLOW + */ +#define MUL_NO_OVERFLOW ((size_t)1 << (sizeof(size_t) * 4)) + +/* + * Even though specified in POSIX, the PAGESIZE and PAGE_SIZE + * macros have very poor portability. Since we only use this + * to avoid free() overhead for small shrinking, simply pick + * an arbitrary number. + */ +#define MALLOC_PAGESIZE (1UL << 12) + + +void * +recallocarray(void *ptr, size_t oldnmemb, size_t newnmemb, size_t size) +{ + size_t oldsize, newsize; + void *newptr; + + if (ptr == NULL) + return calloc(newnmemb, size); + + if ((newnmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) && + newnmemb > 0 && SIZE_MAX / newnmemb < size) { + errno = ENOMEM; + return NULL; + } + newsize = newnmemb * size; + + if ((oldnmemb >= MUL_NO_OVERFLOW || size >= MUL_NO_OVERFLOW) && + oldnmemb > 0 && SIZE_MAX / oldnmemb < size) { + errno = EINVAL; + return NULL; + } + oldsize = oldnmemb * size; + + /* + * Don't bother too much if we're shrinking just a bit, + * we do not shrink for series of small steps, oh well. + */ + if (newsize <= oldsize) { + size_t d = oldsize - newsize; + + if (d < oldsize / 2 && d < MALLOC_PAGESIZE) { + memset((char *)ptr + newsize, 0, d); + return ptr; + } + } + + newptr = malloc(newsize); + if (newptr == NULL) + return NULL; + + if (newsize > oldsize) { + memcpy(newptr, ptr, oldsize); + memset((char *)newptr + oldsize, 0, newsize - oldsize); + } else + memcpy(newptr, ptr, newsize); + + /* + * At this point, the OpenBSD implementation calls + * explicit_bzero() on the old memory before it is + * freed. Since explicit_bzero() is hard to implement + * portably and we don't handle confidential data in + * mandoc in the first place, simply free the memory + * without clearing it. + */ + + free(ptr); + + return newptr; +} + +#endif /* !HAVE_RECALLOCARRAY */ Property changes on: vendor/mdocml/dist/compat_recallocarray.c ___________________________________________________________________ Added: svn:eol-style ## -0,0 +1 ## +native \ No newline at end of property Added: svn:keywords ## -0,0 +1 ## +FreeBSD=%H \ No newline at end of property Added: svn:mime-type ## -0,0 +1 ## +text/plain \ No newline at end of property Index: vendor/mdocml/dist/configure =================================================================== --- vendor/mdocml/dist/configure (revision 321806) +++ vendor/mdocml/dist/configure (revision 321807) @@ -1,528 +1,537 @@ #!/bin/sh # -# $Id: configure,v 1.62 2017/03/04 16:36:29 schwarze Exp $ +# $Id: configure,v 1.64 2017/07/01 09:47:30 schwarze Exp $ # # Copyright (c) 2014, 2015, 2016, 2017 Ingo Schwarze # # Permission to use, copy, modify, and distribute this software for any # purpose with or without fee is hereby granted, provided that the above # copyright notice and this permission notice appear in all copies. # # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. set -e [ -w config.log ] && mv config.log config.log.old [ -w config.h ] && mv config.h config.h.old # Output file descriptor usage: # 1 (stdout): config.h, Makefile.local # 2 (stderr): original stderr, usually to the console # 3: config.log exec 3> config.log echo "config.log: writing..." # --- default settings ------------------------------------------------- # Initialize all variables here, # such that nothing can leak in from the environment. SOURCEDIR=`dirname "$0"` +MANPATH_BASE="/usr/share/man:/usr/X11R6/man" MANPATH_DEFAULT="/usr/share/man:/usr/X11R6/man:/usr/local/man" OSNAME= UTF8_LOCALE= CC=`printf "all:\\n\\t@echo \\\$(CC)\\n" | env -i make -sf -` CFLAGS="-g -W -Wall -Wmissing-prototypes -Wstrict-prototypes -Wwrite-strings" CFLAGS="${CFLAGS} -Wno-unused-parameter" LDADD= LDFLAGS= LD_NANOSLEEP= LD_OHASH= LD_RECVMSG= STATIC="-static" BUILD_CGI=0 BUILD_CATMAN=0 INSTALL_LIBMANDOC=0 HAVE_CMSG= HAVE_CMSG_XPG42=0 HAVE_DIRENT_NAMLEN= HAVE_EFTYPE= HAVE_ENDIAN= HAVE_ERR= HAVE_FTS= HAVE_FTS_COMPARE_CONST= HAVE_GETLINE= HAVE_GETSUBOPT= HAVE_ISBLANK= HAVE_MKDTEMP= HAVE_NANOSLEEP= HAVE_NTOHL= HAVE_O_DIRECTORY= HAVE_OHASH= HAVE_PATH_MAX= HAVE_PLEDGE= HAVE_PROGNAME= HAVE_REALLOCARRAY= +HAVE_RECALLOCARRAY= HAVE_RECVMSG= HAVE_REWB_BSD= HAVE_REWB_SYSV= HAVE_SANDBOX_INIT= HAVE_STRCASESTR= HAVE_STRINGLIST= HAVE_STRLCAT= HAVE_STRLCPY= HAVE_STRPTIME= HAVE_STRSEP= HAVE_STRTONUM= HAVE_SYS_ENDIAN= HAVE_VASPRINTF= HAVE_WCHAR= PREFIX="/usr/local" BINDIR= SBINDIR= BIN_FROM_SBIN= INCLUDEDIR= LIBDIR= MANDIR= HOMEBREWDIR= WWWPREFIX="/var/www" HTDOCDIR= CGIBINDIR= BINM_APROPOS="apropos" BINM_CATMAN="catman" BINM_MAKEWHATIS="makewhatis" BINM_MAN="man" BINM_SOELIM="soelim" BINM_WHATIS="whatis" MANM_MAN="man" MANM_MANCONF="man.conf" MANM_MDOC="mdoc" MANM_ROFF="roff" MANM_EQN="eqn" MANM_TBL="tbl" INSTALL="install" INSTALL_PROGRAM= INSTALL_LIB= INSTALL_MAN= INSTALL_DATA= LN="ln -f" # --- manual settings from configure.local ----------------------------- if [ -r ./configure.local ]; then echo "configure.local: reading..." 1>&2 echo "configure.local: reading..." 1>&3 cat ./configure.local 1>&3 . ./configure.local else echo "configure.local: no (fully automatic configuration)" 1>&2 echo "configure.local: no (fully automatic configuration)" 1>&3 fi echo 1>&3 # --- tests for config.h ---------------------------------------------- COMP="${CC} ${CFLAGS} -Wno-unused -Werror" # Check whether this HAVE_ setting is manually overridden. # If yes, use the override, if no, do not decide anything yet. # Arguments: lower-case test name, manual value ismanual() { [ -z "${3}" ] && return 1 echo "${1}: manual (HAVE_${2}=${3})" 1>&2 echo "${1}: manual (HAVE_${2}=${3})" 1>&3 echo 1>&3 return 0 } # Run a single autoconfiguration test. # In case of success, enable the feature. # In case of failure, do not decide anything yet. # Arguments: lower-case test name, upper-case test name, additional CFLAGS singletest() { cat 1>&3 << __HEREDOC__ ${1}${3}: testing... ${COMP} -o test-${1} test-${1}.c ${3} __HEREDOC__ if ${COMP} -o "test-${1}" "${SOURCEDIR}/test-${1}.c" ${3} 1>&3 2>&3 then echo "${1}${3}: ${CC} succeeded" 1>&3 else echo "${1}${3}: ${CC} failed with $?" 1>&3 echo 1>&3 return 1 fi if ./test-${1} 1>&3 2>&3; then echo "${1}${3}: yes" 1>&2 echo "${1}${3}: yes" 1>&3 echo 1>&3 eval HAVE_${2}=1 rm "test-${1}" return 0 else echo "${1}${3}: execution failed with $?" 1>&3 echo 1>&3 rm "test-${1}" return 1 fi } # Run a complete autoconfiguration test, including the check for # a manual override and disabling the feature on failure. # Arguments: lower case name, upper case name, additional CFLAGS runtest() { eval _manual=\${HAVE_${2}} ismanual "${1}" "${2}" "${_manual}" && return 0 singletest "${1}" "${2}" "${3}" && return 0 echo "${1}${3}: no" 1>&2 eval HAVE_${2}=0 return 1 } # Select a UTF-8 locale. get_locale() { [ -n "${HAVE_WCHAR}" ] && [ "${HAVE_WCHAR}" -eq 0 ] && return 0 ismanual UTF8_LOCALE UTF8_LOCALE "$UTF8_LOCALE" && return 0 echo "UTF8_LOCALE: testing..." 1>&3 UTF8_LOCALE=`locale -a | grep -i '^en_US\.UTF-*8$' | head -n 1` if [ -z "${UTF8_LOCALE}" ]; then UTF8_LOCALE=`locale -a | grep -i '\.UTF-*8' | head -n 1` [ -n "${UTF8_LOCALE}" ] || return 1 fi echo "UTF8_LOCALE=${UTF8_LOCALE}" 1>&2 echo "UTF8_LOCALE=${UTF8_LOCALE}" 1>&3 echo 1>&3 return 0; } # --- library functions --- runtest dirent-namlen DIRENT_NAMLEN || true runtest be32toh ENDIAN || true runtest be32toh SYS_ENDIAN -DSYS_ENDIAN || true runtest EFTYPE EFTYPE || true runtest err ERR || true runtest getline GETLINE || true runtest getsubopt GETSUBOPT || true runtest isblank ISBLANK || true runtest mkdtemp MKDTEMP || true runtest ntohl NTOHL || true runtest O_DIRECTORY O_DIRECTORY || true runtest PATH_MAX PATH_MAX || true runtest pledge PLEDGE || true runtest sandbox_init SANDBOX_INIT || true runtest progname PROGNAME || true runtest reallocarray REALLOCARRAY || true +runtest recallocarray RECALLOCARRAY || true runtest rewb-bsd REWB_BSD || true runtest rewb-sysv REWB_SYSV || true runtest strcasestr STRCASESTR || true runtest stringlist STRINGLIST || true runtest strlcat STRLCAT || true runtest strlcpy STRLCPY || true runtest strptime STRPTIME || true runtest strsep STRSEP || true runtest strtonum STRTONUM || true runtest vasprintf VASPRINTF || true if [ ${HAVE_ENDIAN} -eq 0 -a \ ${HAVE_SYS_ENDIAN} -eq 0 -a \ ${HAVE_NTOHL} -eq 0 ]; then echo "FATAL: no endian conversion functions found" 1>&2 echo "FATAL: no endian conversion functions found" 1>&3 exit 1 fi if ismanual fts FTS ${HAVE_FTS}; then HAVE_FTS_COMPARE_CONST=0 elif runtest fts FTS_COMPARE_CONST -DFTS_COMPARE_CONST; then HAVE_FTS=1 else runtest fts FTS || true fi # --- wide character and locale support --- if get_locale; then runtest wchar WCHAR -DUTF8_LOCALE=\"${UTF8_LOCALE}\" || true else HAVE_WCHAR=0 echo "wchar: no (no UTF8_LOCALE)" 1>&2 echo "wchar: no (no UTF8_LOCALE)" 1>&3 fi # --- nanosleep --- if [ -n "${LD_NANOSLEEP}" ]; then runtest nanosleep NANOSLEEP "${LD_NANOSLEEP}" || true elif singletest nanosleep NANOSLEEP; then : elif runtest nanosleep NANOSLEEP "-lrt"; then LD_NANOSLEEP="-lrt" fi if [ "${HAVE_NANOSLEEP}" -eq 0 ]; then echo "FATAL: nanosleep: no" 1>&2 echo "FATAL: nanosleep: no" 1>&3 exit 1 fi if [ ${BUILD_CATMAN} -gt 0 ]; then # --- recvmsg --- if [ -n "${LD_RECVMSG}" ]; then runtest recvmsg RECVMSG "${LD_RECVMSG}" || true elif singletest recvmsg RECVMSG; then : elif runtest recvmsg RECVMSG "-lsocket"; then LD_RECVMSG="-lsocket" fi if [ "${HAVE_RECVMSG}" -eq 0 ]; then echo "FATAL: recvmsg: no" 1>&2 echo "FATAL: recvmsg: no" 1>&3 echo "Without recvmsg(2), you cannot BUILD_CATMAN." 1>&2 exit 1 fi # --- cmsg --- if singletest cmsg CMSG; then : elif runtest cmsg CMSG "-D_XPG4_2"; then HAVE_CMSG_XPG42=1 fi if [ "${HAVE_CMSG}" -eq 0 ]; then echo "FATAL: cmsg: no" 1>&2 echo "FATAL: cmsg: no" 1>&3 echo "Without CMSG_FIRSTHDR(3), you cannot BUILD_CATMAN." 1>&2 exit 1 fi fi # --- ohash --- if ismanual ohash OHASH "${HAVE_OHASH}"; then : elif [ -n "${LD_OHASH}" ]; then runtest ohash OHASH "${LD_OHASH}" || true elif singletest ohash OHASH; then : elif runtest ohash OHASH "-lutil"; then LD_OHASH="-lutil" fi if [ "${HAVE_OHASH}" -eq 0 ]; then LD_OHASH= fi # --- LDADD --- LDADD="${LDADD} ${LD_NANOSLEEP} ${LD_RECVMSG} ${LD_OHASH} -lz" echo "LDADD=\"${LDADD}\"" 1>&2 echo "LDADD=\"${LDADD}\"" 1>&3 echo 1>&3 # --- write config.h --- exec > config.h cat << __HEREDOC__ #ifdef __cplusplus #error "Do not use C++. See the INSTALL file." #endif #if !defined(__GNUC__) || (__GNUC__ < 4) #define __attribute__(x) #endif #if defined(__linux__) || defined(__MINT__) #define _GNU_SOURCE /* See test-*.c what needs this. */ #endif __HEREDOC__ -[ ${HAVE_GETLINE} -eq 0 -o ${HAVE_REALLOCARRAY} -eq 0 -o \ +[ ${HAVE_GETLINE} -eq 0 -o \ + ${HAVE_REALLOCARRAY} -eq 0 -o ${HAVE_RECALLOCARRAY} -eq 0 -o \ ${HAVE_STRLCAT} -eq 0 -o ${HAVE_STRLCPY} -eq 0 ] \ && echo "#include " [ ${HAVE_VASPRINTF} -eq 0 ] && echo "#include " [ ${HAVE_GETLINE} -eq 0 ] && echo "#include " echo echo "#define MAN_CONF_FILE \"/etc/${MANM_MANCONF}\"" +echo "#define MANPATH_BASE \"${MANPATH_BASE}\"" echo "#define MANPATH_DEFAULT \"${MANPATH_DEFAULT}\"" [ -n "${OSNAME}" ] && echo "#define OSNAME \"${OSNAME}\"" [ -n "${UTF8_LOCALE}" ] && echo "#define UTF8_LOCALE \"${UTF8_LOCALE}\"" [ -n "${HOMEBREWDIR}" ] && echo "#define HOMEBREWDIR \"${HOMEBREWDIR}\"" [ ${HAVE_EFTYPE} -eq 0 ] && echo "#define EFTYPE EINVAL" [ ${HAVE_O_DIRECTORY} -eq 0 ] && echo "#define O_DIRECTORY 0" [ ${HAVE_PATH_MAX} -eq 0 ] && echo "#define PATH_MAX 4096" if [ ${HAVE_ENDIAN} -eq 0 -a ${HAVE_SYS_ENDIAN} -eq 0 ]; then echo "#define be32toh ntohl" echo "#define htobe32 htonl" fi cat << __HEREDOC__ #define HAVE_CMSG_XPG42 ${HAVE_CMSG_XPG42} #define HAVE_DIRENT_NAMLEN ${HAVE_DIRENT_NAMLEN} #define HAVE_ENDIAN ${HAVE_ENDIAN} #define HAVE_ERR ${HAVE_ERR} #define HAVE_FTS ${HAVE_FTS} #define HAVE_FTS_COMPARE_CONST ${HAVE_FTS_COMPARE_CONST} #define HAVE_GETLINE ${HAVE_GETLINE} #define HAVE_GETSUBOPT ${HAVE_GETSUBOPT} #define HAVE_ISBLANK ${HAVE_ISBLANK} #define HAVE_MKDTEMP ${HAVE_MKDTEMP} #define HAVE_NTOHL ${HAVE_NTOHL} #define HAVE_PLEDGE ${HAVE_PLEDGE} #define HAVE_PROGNAME ${HAVE_PROGNAME} #define HAVE_REALLOCARRAY ${HAVE_REALLOCARRAY} +#define HAVE_RECALLOCARRAY ${HAVE_RECALLOCARRAY} #define HAVE_REWB_BSD ${HAVE_REWB_BSD} #define HAVE_REWB_SYSV ${HAVE_REWB_SYSV} #define HAVE_SANDBOX_INIT ${HAVE_SANDBOX_INIT} #define HAVE_STRCASESTR ${HAVE_STRCASESTR} #define HAVE_STRINGLIST ${HAVE_STRINGLIST} #define HAVE_STRLCAT ${HAVE_STRLCAT} #define HAVE_STRLCPY ${HAVE_STRLCPY} #define HAVE_STRPTIME ${HAVE_STRPTIME} #define HAVE_STRSEP ${HAVE_STRSEP} #define HAVE_STRTONUM ${HAVE_STRTONUM} #define HAVE_SYS_ENDIAN ${HAVE_SYS_ENDIAN} #define HAVE_VASPRINTF ${HAVE_VASPRINTF} #define HAVE_WCHAR ${HAVE_WCHAR} #define HAVE_OHASH ${HAVE_OHASH} #define BINM_APROPOS "${BINM_APROPOS}" #define BINM_CATMAN "${BINM_CATMAN}" #define BINM_MAKEWHATIS "${BINM_MAKEWHATIS}" #define BINM_MAN "${BINM_MAN}" #define BINM_SOELIM "${BINM_SOELIM}" #define BINM_WHATIS "${BINM_WHATIS}" __HEREDOC__ if [ ${HAVE_ERR} -eq 0 ]; then echo "extern void err(int, const char *, ...);" echo "extern void errx(int, const char *, ...);" echo "extern void warn(const char *, ...);" echo "extern void warnx(const char *, ...);" fi [ ${HAVE_GETLINE} -eq 0 ] && \ echo "extern ssize_t getline(char **, size_t *, FILE *);" [ ${HAVE_GETSUBOPT} -eq 0 ] && \ echo "extern int getsubopt(char **, char * const *, char **);" [ ${HAVE_ISBLANK} -eq 0 ] && \ echo "extern int isblank(int);" [ ${HAVE_MKDTEMP} -eq 0 ] && \ echo "extern char *mkdtemp(char *);" if [ ${HAVE_PROGNAME} -eq 0 ]; then echo "extern const char *getprogname(void);" echo "extern void setprogname(const char *);" fi [ ${HAVE_REALLOCARRAY} -eq 0 ] && \ echo "extern void *reallocarray(void *, size_t, size_t);" + +[ ${HAVE_RECALLOCARRAY} -eq 0 ] && \ + echo "extern void *recallocarray(void *, size_t, size_t, size_t);" [ ${HAVE_STRCASESTR} -eq 0 ] && \ echo "extern char *strcasestr(const char *, const char *);" [ ${HAVE_STRLCAT} -eq 0 ] && \ echo "extern size_t strlcat(char *, const char *, size_t);" [ ${HAVE_STRLCPY} -eq 0 ] && \ echo "extern size_t strlcpy(char *, const char *, size_t);" [ ${HAVE_STRSEP} -eq 0 ] && \ echo "extern char *strsep(char **, const char *);" [ ${HAVE_STRTONUM} -eq 0 ] && \ echo "extern long long strtonum(const char *, long long, long long, const char **);" [ ${HAVE_VASPRINTF} -eq 0 ] && \ echo "extern int vasprintf(char **, const char *, va_list);" echo "config.h: written" 1>&2 echo "config.h: written" 1>&3 # --- tests for Makefile.local ----------------------------------------- exec > Makefile.local [ -z "${BINDIR}" ] && BINDIR="${PREFIX}/bin" [ -z "${SBINDIR}" ] && SBINDIR="${PREFIX}/sbin" [ -z "${BIN_FROM_SBIN}" ] && BIN_FROM_SBIN="../bin" [ -z "${INCLUDEDIR}" ] && INCLUDEDIR="${PREFIX}/include/mandoc" [ -z "${LIBDIR}" ] && LIBDIR="${PREFIX}/lib/mandoc" [ -z "${MANDIR}" ] && MANDIR="${PREFIX}/man" [ -z "${HTDOCDIR}" ] && HTDOCDIR="${WWWPREFIX}/htdocs" [ -z "${CGIBINDIR}" ] && CGIBINDIR="${WWWPREFIX}/cgi-bin" [ -z "${INSTALL_PROGRAM}" ] && INSTALL_PROGRAM="${INSTALL} -m 0555" [ -z "${INSTALL_LIB}" ] && INSTALL_LIB="${INSTALL} -m 0444" [ -z "${INSTALL_MAN}" ] && INSTALL_MAN="${INSTALL} -m 0444" [ -z "${INSTALL_DATA}" ] && INSTALL_DATA="${INSTALL} -m 0444" BUILD_TARGETS= [ ${BUILD_CGI} -gt 0 ] && BUILD_TARGETS="man.cgi" [ ${BUILD_CATMAN} -gt 0 ] && \ BUILD_TARGETS="${BUILD_TARGETS} mandocd catman" INSTALL_TARGETS= [ ${INSTALL_LIBMANDOC} -gt 0 ] && INSTALL_TARGETS="lib-install" [ ${BUILD_CGI} -gt 0 ] && INSTALL_TARGETS="${INSTALL_TARGETS} cgi-install" [ ${BUILD_CATMAN} -gt 0 ] && \ INSTALL_TARGETS="${INSTALL_TARGETS} catman-install" cat << __HEREDOC__ BUILD_TARGETS = ${BUILD_TARGETS} INSTALL_TARGETS = ${INSTALL_TARGETS} CC = ${CC} CFLAGS = ${CFLAGS} LDADD = ${LDADD} LDFLAGS = ${LDFLAGS} STATIC = ${STATIC} PREFIX = ${PREFIX} BINDIR = ${BINDIR} SBINDIR = ${SBINDIR} BIN_FROM_SBIN = ${BIN_FROM_SBIN} INCLUDEDIR = ${INCLUDEDIR} LIBDIR = ${LIBDIR} MANDIR = ${MANDIR} WWWPREFIX = ${WWWPREFIX} HTDOCDIR = ${HTDOCDIR} CGIBINDIR = ${CGIBINDIR} BINM_APROPOS = ${BINM_APROPOS} BINM_CATMAN = ${BINM_CATMAN} BINM_MAKEWHATIS = ${BINM_MAKEWHATIS} BINM_MAN = ${BINM_MAN} BINM_SOELIM = ${BINM_SOELIM} BINM_WHATIS = ${BINM_WHATIS} MANM_MAN = ${MANM_MAN} MANM_MANCONF = ${MANM_MANCONF} MANM_MDOC = ${MANM_MDOC} MANM_ROFF = ${MANM_ROFF} MANM_EQN = ${MANM_EQN} MANM_TBL = ${MANM_TBL} INSTALL = ${INSTALL} INSTALL_PROGRAM = ${INSTALL_PROGRAM} INSTALL_LIB = ${INSTALL_LIB} INSTALL_MAN = ${INSTALL_MAN} INSTALL_DATA = ${INSTALL_DATA} LN = ${LN} __HEREDOC__ echo "Makefile.local: written" 1>&2 echo "Makefile.local: written" 1>&3 exit 0 Index: vendor/mdocml/dist/configure.local.example =================================================================== --- vendor/mdocml/dist/configure.local.example (revision 321806) +++ vendor/mdocml/dist/configure.local.example (revision 321807) @@ -1,306 +1,312 @@ -# $Id: configure.local.example,v 1.30 2017/03/04 16:36:29 schwarze Exp $ +# $Id: configure.local.example,v 1.33 2017/07/20 16:24:53 schwarze Exp $ # # Copyright (c) 2014, 2015, 2016, 2017 Ingo Schwarze # # Permission to use, copy, modify, and distribute this software for any # purpose with or without fee is hereby granted, provided that the above # copyright notice and this permission notice appear in all copies. # # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. # For all settings documented in this file, there are reasonable # defaults and/or the ./configure script attempts autodetection. # Consequently, you only need to create a file ./configure.local # and put any of these settings into it if ./configure autodetection # fails or if you want to make different choices for other reasons. -# If autodetection fails, please tell . +# If autodetection fails, please tell . # We recommend that you write ./configure.local from scratch and # only put the lines there you need. This file contains examples. # It is not intended as a template to be copied as a whole. # --- user settings relevant for all builds ---------------------------- # For -Tutf8 and -Tlocale operation, mandoc(1) requires # providing setlocale(3) and providing wcwidth(3) and # putwchar(3) with a wchar_t storing UCS-4 values. Theoretically, # the latter should be tested with the __STDC_ISO_10646__ feature # macro. In practice, many headers do not provide that # macro even though they treat wchar_t as UCS-4. So the automatic # test only checks that wchar_t is wide enough, that is, at least # four bytes. # The following line forces multi-byte support. # If your C library does not treat wchar_t as UCS-4, the UTF-8 output # mode will print garbage. HAVE_WCHAR=1 # The following line disables multi-byte support. # The output modes -Tutf8 and -Tlocale will be the same as -Tascii. HAVE_WCHAR=0 # For -Tutf8 mode, mandoc needs to set an arbitrary locale having # a UTF-8 character set. If autodetection of a suitable locale # fails or selects an undesirable locale, you can manually choose # the locale for -Tutf8 mode: UTF8_LOCALE=en_US.UTF-8 # When man(1) or apropos(1) is called without -m and -M options, # MANPATH is not set in the environment, and man.conf(5) is not # available, manuals are searched for in the following directory # trees by default. MANPATH_DEFAULT="/usr/share/man:/usr/X11R6/man:/usr/local/man" +# Validation of cross references with mandoc -Tlint only looks +# for manual pages in the following directories: + +MANPATH_BASE="/usr/share/man:/usr/X11R6/man" + # In manual pages written in the mdoc(7) language, the operating system # version is displayed in the page footer line. If an operating system # is specified as an argument to the .Os macro, that is always used. # If the .Os macro has no argument and an operation system is specified # with the mandoc(1) -Ios= command line option, that is used. # Otherwise, the uname(3) library function is called at runtime to find # the name of the operating system. # If you do not want uname(3) to be called but instead want a fixed # string to be used, use the following line: OSNAME="OpenBSD 6.0" # The following installation directories are used. # It is possible to set only one or a few of these variables, # there is no need to copy the whole block. # Even if you set PREFIX to something else, the other variables # pick it up without copying them all over. PREFIX="/usr/local" BINDIR="${PREFIX}/bin" SBINDIR="${PREFIX}/sbin" MANDIR="${PREFIX}/man" # If BINDIR and SBINDIR are not subdirectories of the same parent # directory or if the basename(1) of BINDIR differs from "bin", # the relative path from SBINDIR to BINDIR is also needed. # The default is: BIN_FROM_SBIN="../bin" # Some distributions may want to avoid naming conflicts # with the configuration files of other man(1) implementations. # This changes the name of the installed section 5 manual page as well. MANM_MANCONF="mandoc.conf" # default is "man.conf" # Some distributions may want to avoid naming conflicts among manuals. # If you want to change the names of installed section 7 manual pages, # the following alternative names are suggested. # The suffix ".7" will automatically be appended. # It is possible to set only one or a few of these variables, # there is no need to copy the whole block. MANM_MAN="mandoc_man" # default is "man" MANM_MDOC="mandoc_mdoc" # default is "mdoc" MANM_ROFF="mandoc_roff" # default is "roff" MANM_EQN="mandoc_eqn" # default is "eqn" MANM_TBL="mandoc_tbl" # default is "tbl" # Some distributions may want to avoid naming conflicts with # other man(1), apropos(1), makewhatis(8), or soelim(1) utilities. # If you want to change the names of binary programs, # the following alternative names are suggested. # Using different names is possible as well. # This changes the names of the installed section 1 and section 8 # manual pages as well. # It is possible to set only one or two of these variables, # there is no need to copy the whole block. BINM_MAN=mman # default is "man" BINM_APROPOS=mapropos # default is "apropos" BINM_WHATIS=mwhatis # default is "whatis" BINM_MAKEWHATIS=mandocdb # default is "makewhatis" BINM_SOELIM=msoelim # default is "soelim" # Some distributions do not want hardlinks # between installed binary programs. # Set the following variable to use symbolic links instead. # It is also used for links between manual pages. # It is only used by the install* targets. # When using this, DESTDIR must be empty or an absolute path. LN="ln -sf" # default is "ln -f" # Before falling back to the bundled version of the ohash(3) hashing # library, autoconfiguration tries the following linker flag to # link against your system version. If you do have ohash(3) on # your system but it needs different linker flags, set the following # variable to specify the required linker flags. LD_OHASH="-lutil" # When library autodetection decides to use -L/usr/local/lib, # -I/usr/local/include is automatically added to CFLAGS. # If you manually set LD_OHASH to something including -L/usr/local/lib, # chances are you will also need the following line: CFLAGS="${CFLAGS} -I/usr/local/include" # Some platforms may need an additional linker flag for nanosleep(2). # If none is needed or it is -lrt, it is autodetected. # Otherwise, set the following variable. LD_NANOSLEEP="-lrt" # Some platforms may need an additional linker flag for recvmsg(2). # If none is needed or it is -lsocket, it is autodetected. # Otherwise, set the following variable. LD_RECVMSG="-lsocket" # Some platforms might need additional linker flags to link against # libmandoc that are not autodetected, though no such cases are # currently known. LDADD="-lm" # Some systems may want to set additional linker flags for all the # binaries, not only for those using libmandoc, for example for # hardening options. LDFLAGS="-Wl,-z,relro" # It is possible to change the utility program used for installation # and the modes files are installed with. The defaults are: INSTALL="install" INSTALL_PROGRAM="${INSTALL} -m 0555" INSTALL_LIB="${INSTALL} -m 0444" INSTALL_MAN="${INSTALL} -m 0444" INSTALL_DATA="${INSTALL} -m 0444" # When using the "homebrew" package manager on Mac OS X, the actual # manuals are located in a so-called "cellar" and only symlinked # into the manual trees. To allow mandoc to follow such symlinks, # you have to specify the physical location of the cellar as returned # by realpath(3), for example: PREFIX="/usr/local" HOMEBREWDIR="${PREFIX}/Cellar" # --- user settings for the mandoc(3) library -------------------------- # By default, libmandoc.a is not installed. It is almost never needed # because there is almost no non-mandoc software out there using this # library. The one notable exception is NetBSD apropos(1). # So, when building for the NetBSD base system - but not for NetBSD # ports nor for pkgsrc! - you may want the following: INSTALL_LIBMANDOC=1 # The following settings are only used when INSTALL_LIBMANDOC is set. INCLUDEDIR="${PREFIX}/include/mandoc" LIBDIR="${PREFIX}/lib/mandoc" # --- user settings related to man.cgi --------------------------------- # By default, building man.cgi(8) is disabled. To enable it, copy # cgi.h.example to cgi.h, edit it, and use the following line. BUILD_CGI=1 # The remaining settings in this section are only relevant if BUILD_CGI # is enabled. Otherwise, they have no effect either way. # By default, man.cgi(8) is linked statically. # Some systems do not support static linking, for example Mac OS X. # In that case, use the following line: STATIC= # Some systems, for example Linux, require -pthread for static linking: STATIC="-static -pthread" # Some directories. # This works just like PREFIX, see above. WWWPREFIX="/var/www" HTDOCDIR="${WWWPREFIX}/htdocs" CGIBINDIR="${WWWPREFIX}/cgi-bin" # --- user settings related to catman ---------------------------------- # By default, building mandocd(8) and catman(8) is disabled. # To enable it, use the following line. # It does not work on SunOS 5.10 because there is no mkdirat(2) # nor on SunOS 5.9 which also lacks CMSG_LEN(3) and CMSG_SPACE(3). BUILD_CATMAN=1 # Install catman(8) with a different name. # See BINM_MAN above for details of how this works. BINM_CATMAN=mcatman # default is "catman" # --- settings that rarely need to be touched -------------------------- # Do not set these variables unless you really need to. # You can manually override the compiler to be used. # But that's rarely useful because ./configure asks your make(1) # which compiler to use, and that answer will hardly be wrong. CC=cc # IBM AIX may need: CC=xlc # The default compiler flags are: CFLAGS="-g -W -Wall -Wstrict-prototypes -Wno-unused-parameter -Wwrite-strings" # IBM AIX xlc does not support -W; in that case, please use: CFLAGS="-g" # In rare cases, it may be required to skip individual automatic tests. # Each of the following variables can be set to 0 (test will not be run # and will be regarded as failed) or 1 (test will not be run and will # be regarded as successful). HAVE_DIRENT_NAMLEN=0 HAVE_ENDIAN=0 HAVE_EFTYPE=0 HAVE_ERR=0 HAVE_FTS=0 # Setting this implies HAVE_FTS_COMPARE_CONST=0. HAVE_FTS_COMPARE_CONST=0 # Setting this implies HAVE_FTS=1. HAVE_GETLINE=0 HAVE_GETSUBOPT=0 HAVE_ISBLANK=0 HAVE_MKDTEMP=0 HAVE_NTOHL=0 HAVE_O_DIRECTORY=0 HAVE_OHASH=0 HAVE_PATH_MAX=0 HAVE_PLEDGE=0 HAVE_PROGNAME=0 HAVE_REALLOCARRAY=0 +HAVE_RECALLOCARRAY=0 HAVE_REWB_BSD=0 HAVE_REWB_SYSV=0 HAVE_STRCASESTR=0 HAVE_STRINGLIST=0 HAVE_STRLCAT=0 HAVE_STRLCPY=0 HAVE_STRPTIME=0 HAVE_STRSEP=0 HAVE_STRTONUM=0 HAVE_SYS_ENDIAN=0 HAVE_VASPRINTF=0 HAVE_WCHAR=0 Index: vendor/mdocml/dist/demandoc.c =================================================================== --- vendor/mdocml/dist/demandoc.c (revision 321806) +++ vendor/mdocml/dist/demandoc.c (revision 321807) @@ -1,263 +1,264 @@ -/* $Id: demandoc.c,v 1.28 2017/01/10 13:47:00 schwarze Exp $ */ +/* $Id: demandoc.c,v 1.29 2017/06/24 14:38:32 schwarze Exp $ */ /* * Copyright (c) 2011 Kristaps Dzonsons * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "config.h" #include #include #include #include #include #include #include +#include "mandoc.h" #include "roff.h" #include "man.h" #include "mdoc.h" -#include "mandoc.h" static void pline(int, int *, int *, int); static void pman(const struct roff_node *, int *, int *, int); static void pmandoc(struct mparse *, int, const char *, int); static void pmdoc(const struct roff_node *, int *, int *, int); static void pstring(const char *, int, int *, int); static void usage(void); static const char *progname; int main(int argc, char *argv[]) { struct mparse *mp; int ch, fd, i, list; extern int optind; if (argc < 1) progname = "demandoc"; else if ((progname = strrchr(argv[0], '/')) == NULL) progname = argv[0]; else ++progname; mp = NULL; list = 0; while (-1 != (ch = getopt(argc, argv, "ikm:pw"))) switch (ch) { case ('i'): /* FALLTHROUGH */ case ('k'): /* FALLTHROUGH */ case ('m'): /* FALLTHROUGH */ case ('p'): break; case ('w'): list = 1; break; default: usage(); return (int)MANDOCLEVEL_BADARG; } argc -= optind; argv += optind; mchars_alloc(); - mp = mparse_alloc(MPARSE_SO, MANDOCLEVEL_BADARG, NULL, NULL); + mp = mparse_alloc(MPARSE_SO, MANDOCERR_MAX, NULL, + MANDOC_OS_OTHER, NULL); assert(mp); if (argc < 1) pmandoc(mp, STDIN_FILENO, "", list); for (i = 0; i < argc; i++) { mparse_reset(mp); if ((fd = mparse_open(mp, argv[i])) == -1) { perror(argv[i]); continue; } pmandoc(mp, fd, argv[i], list); } mparse_free(mp); mchars_free(); return (int)MANDOCLEVEL_OK; } static void usage(void) { fprintf(stderr, "usage: %s [-w] [files...]\n", progname); } static void pmandoc(struct mparse *mp, int fd, const char *fn, int list) { struct roff_man *man; int line, col; mparse_readfd(mp, fd, fn); close(fd); mparse_result(mp, &man, NULL); line = 1; col = 0; if (man == NULL) return; if (man->macroset == MACROSET_MDOC) { mdoc_validate(man); pmdoc(man->first->child, &line, &col, list); } else { man_validate(man); pman(man->first->child, &line, &col, list); } if ( ! list) putchar('\n'); } /* * Strip the escapes out of a string, emitting the results. */ static void pstring(const char *p, int col, int *colp, int list) { enum mandoc_esc esc; const char *start, *end; int emit; /* * Print as many column spaces til we achieve parity with the * input document. */ again: if (list && '\0' != *p) { while (isspace((unsigned char)*p)) p++; while ('\'' == *p || '(' == *p || '"' == *p) p++; emit = isalpha((unsigned char)p[0]) && isalpha((unsigned char)p[1]); for (start = p; '\0' != *p; p++) if ('\\' == *p) { p++; esc = mandoc_escape(&p, NULL, NULL); if (ESCAPE_ERROR == esc) return; emit = 0; } else if (isspace((unsigned char)*p)) break; end = p - 1; while (end > start) if ('.' == *end || ',' == *end || '\'' == *end || '"' == *end || ')' == *end || '!' == *end || '?' == *end || ':' == *end || ';' == *end) end--; else break; if (emit && end - start >= 1) { for ( ; start <= end; start++) if (ASCII_HYPH == *start) putchar('-'); else putchar((unsigned char)*start); putchar('\n'); } if (isspace((unsigned char)*p)) goto again; return; } while (*colp < col) { putchar(' '); (*colp)++; } /* * Print the input word, skipping any special characters. */ while ('\0' != *p) if ('\\' == *p) { p++; esc = mandoc_escape(&p, NULL, NULL); if (ESCAPE_ERROR == esc) break; } else { putchar((unsigned char )*p++); (*colp)++; } } static void pline(int line, int *linep, int *col, int list) { if (list) return; /* * Print out as many lines as needed to reach parity with the * original input. */ while (*linep < line) { putchar('\n'); (*linep)++; } *col = 0; } static void pmdoc(const struct roff_node *p, int *line, int *col, int list) { for ( ; p; p = p->next) { if (NODE_LINE & p->flags) pline(p->line, line, col, list); if (ROFFT_TEXT == p->type) pstring(p->string, p->pos, col, list); if (p->child) pmdoc(p->child, line, col, list); } } static void pman(const struct roff_node *p, int *line, int *col, int list) { for ( ; p; p = p->next) { if (NODE_LINE & p->flags) pline(p->line, line, col, list); if (ROFFT_TEXT == p->type) pstring(p->string, p->pos, col, list); if (p->child) pman(p->child, line, col, list); } } Index: vendor/mdocml/dist/eqn.7 =================================================================== --- vendor/mdocml/dist/eqn.7 (revision 321806) +++ vendor/mdocml/dist/eqn.7 (revision 321807) @@ -1,500 +1,500 @@ -.\" $Id: eqn.7,v 1.35 2015/03/30 16:06:14 schwarze Exp $ +.\" $Id: eqn.7,v 1.36 2017/07/20 11:07:27 schwarze Exp $ .\" .\" Copyright (c) 2011 Kristaps Dzonsons .\" Copyright (c) 2014 Ingo Schwarze .\" .\" Permission to use, copy, modify, and distribute this software for any .\" purpose with or without fee is hereby granted, provided that the above .\" copyright notice and this permission notice appear in all copies. .\" .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. .\" -.Dd $Mdocdate: March 30 2015 $ +.Dd $Mdocdate: July 20 2017 $ .Dt EQN 7 .Os .Sh NAME .Nm eqn .Nd eqn language reference for mandoc .Sh DESCRIPTION The .Nm eqn language is an equation-formatting language. It is used within .Xr mdoc 7 and .Xr man 7 .Ux manual pages. It describes the .Em structure of an equation, not its mathematical meaning. This manual describes the .Nm language accepted by the .Xr mandoc 1 utility, which corresponds to the Second Edition .Nm specification (see .Sx SEE ALSO for references). .Pp Equations within .Xr mdoc 7 or .Xr man 7 documents are enclosed by the standalone .Sq \&.EQ and .Sq \&.EN tags. Equations are multi-line blocks consisting of formulas and control statements. .Sh EQUATION STRUCTURE Each equation is bracketed by .Sq \&.EQ and .Sq \&.EN strings. .Em Note : these are not the same as .Xr roff 7 macros, and may only be invoked as .Sq \&.EQ . .Pp The equation grammar is as follows, where quoted strings are case-sensitive literals in the input: .Bd -literal -offset indent eqn : box | eqn box box : text | \(dq{\(dq eqn \(dq}\(dq | \(dqdefine\(dq text text | \(dqndefine\(dq text text | \(dqtdefine\(dq text text | \(dqgfont\(dq text | \(dqgsize\(dq text | \(dqset\(dq text text | \(dqundef\(dq text | \(dqsqrt\(dq box | box pos box | box mark | \(dqmatrix\(dq \(dq{\(dq [col \(dq{\(dq list \(dq}\(dq ]* | pile \(dq{\(dq list \(dq}\(dq | font box | \(dqsize\(dq text box | \(dqleft\(dq text eqn [\(dqright\(dq text] col : \(dqlcol\(dq | \(dqrcol\(dq | \(dqccol\(dq | \(dqcol\(dq text : [^space\e\(dq]+ | \e\(dq.*\e\(dq pile : \(dqlpile\(dq | \(dqcpile\(dq | \(dqrpile\(dq | \(dqpile\(dq pos : \(dqover\(dq | \(dqsup\(dq | \(dqsub\(dq | \(dqto\(dq | \(dqfrom\(dq mark : \(dqdot\(dq | \(dqdotdot\(dq | \(dqhat\(dq | \(dqtilde\(dq | \(dqvec\(dq | \(dqdyad\(dq | \(dqbar\(dq | \(dqunder\(dq font : \(dqroman\(dq | \(dqitalic\(dq | \(dqbold\(dq | \(dqfat\(dq list : eqn | list \(dqabove\(dq eqn space : [\e^~ \et] .Ed .Pp White-space consists of the space, tab, circumflex, and tilde characters. It is required to delimit tokens consisting of alphabetic characters and it is ignored at other places. Braces and quotes also delimit tokens. If within a quoted string, these space characters are retained. Quoted strings are also not scanned for keywords, glyph names, and expansion of definitions. To print a literal quote character, it can be prepended with a backslash or expressed with the \e(dq escape sequence. .Pp Subequations can be enclosed in braces to pass them as arguments to operation keywords, overriding standard operation precedence. Braces can be nested. To set a brace verbatim, it needs to be enclosed in quotes. .Pp The following text terms are translated into a rendered glyph, if available: alpha, beta, chi, delta, epsilon, eta, gamma, iota, kappa, lambda, mu, nu, omega, omicron, phi, pi, psi, rho, sigma, tau, theta, upsilon, xi, zeta, DELTA, GAMMA, LAMBDA, OMEGA, PHI, PI, PSI, SIGMA, THETA, UPSILON, XI, inter (intersection), union (union), prod (product), int (integral), sum (summation), grad (gradient), del (vector differential), times (multiply), cdot (center-dot), nothing (zero-width space), approx (approximately equals), prime (prime), half (one-half), partial (partial differential), inf (infinity), >> (much greater), << -(much less), \-> (left arrow), <\- (right arrow), +\- (plus-minus), != +(much less), <\- (left arrow), \-> (right arrow), +\- (plus-minus), != (not equal), == (equivalence), <= (less-than-equal), and >= (more-than-equal). The character escape sequences documented in .Xr mandoc_char 7 can be used, too. .Pp The following control statements are available: .Bl -tag -width Ds .It Cm define Replace all occurrences of a key with a value. Its syntax is as follows: .Pp .D1 Cm define Ar key cvalc .Pp The first character of the value string, .Ar c , is used as the delimiter for the value .Ar val . This allows for arbitrary enclosure of terms (not just quotes), such as .Pp .D1 Cm define Ar foo \(aqbar baz\(aq .D1 Cm define Ar foo cbar bazc .Pp It is an error to have an empty .Ar key or .Ar val . Note that a quoted .Ar key causes errors in some .Nm implementations and should not be considered portable. It is not expanded for replacements. Definitions may refer to other definitions; these are evaluated recursively when text replacement occurs and not when the definition is created. .Pp Definitions can create arbitrary strings, for example, the following is a legal construction. .Bd -literal -offset indent define foo \(aqdefine\(aq foo bar \(aqbaz\(aq .Ed .Pp Self-referencing definitions will raise an error. The .Cm ndefine statement is a synonym for .Cm define , while .Cm tdefine is discarded. .It Cm gfont Set the default font of subsequent output. Its syntax is as follows: .Pp .D1 Cm gfont Ar font .Pp In mandoc, this value is discarded. .It Cm gsize Set the default size of subsequent output. Its syntax is as follows: .Pp .D1 Cm gsize Oo +|\- Oc Ns Ar size .Pp The .Ar size value should be an integer. If prepended by a sign, the font size is changed relative to the current size. .It Cm set Set an equation mode. In mandoc, both arguments are thrown away. Its syntax is as follows: .Pp .D1 Cm set Ar key val .Pp The .Ar key and .Ar val are not expanded for replacements. This statement is a GNU extension. .It Cm undef Unset a previously-defined key. Its syntax is as follows: .Pp .D1 Cm define Ar key .Pp Once invoked, the definition for .Ar key is discarded. The .Ar key is not expanded for replacements. This statement is a GNU extension. .El .Pp Operation keywords have the following semantics: .Bl -tag -width Ds .It Cm above See .Cm pile . .It Cm bar Draw a line over the preceding box. .It Cm bold Set the following box using bold font. .It Cm ccol Like .Cm cpile , but for use in .Cm matrix . .It Cm cpile Like .Cm pile , but with slightly increased vertical spacing. .It Cm dot Set a single dot over the preceding box. .It Cm dotdot Set two dots (dieresis) over the preceding box. .It Cm dyad Set a dyad symbol (left-right arrow) over the preceding box. .It Cm fat A synonym for .Cm bold . .It Cm font Set the second argument using the font specified by the first argument; currently not recognized by the .Xr mandoc 1 .Nm parser. .It Cm from Set the following box below the preceding box, using a slightly smaller font. Used for sums, integrals, limits, and the like. .It Cm hat Set a hat (circumflex) over the preceding box. .It Cm italic Set the following box using italic font. .It Cm lcol Like .Cm lpile , but for use in .Cm matrix . .It Cm left Set the first argument as a big left delimiter before the second argument. As an optional third argument, .Cm right can follow. In that case, the fourth argument is set as a big right delimiter after the second argument. .It Cm lpile Like .Cm cpile , but subequations are left-justified. .It Cm matrix Followed by a list of columns enclosed in braces. All columns need to have the same number of subequations. The columns are set as a matrix. The difference compared to multiple subsequent .Cm pile operators is that in a .Cm matrix , corresponding subequations in all columns line up horizontally, while each .Cm pile does vertical spacing independently. .It Cm over Set a fraction. The preceding box is the numerator, the following box is the denominator. .It Cm pile Followed by a list of subequations enclosed in braces, the subequations being separated by .Cm above keywords. Sets the subequations one above the other, each of them centered. Typically used to represent vectors in coordinate representation. .It Cm rcol Like .Cm rpile , but for use in .Cm matrix . .It Cm right See .Cm left ; .Cm right cannot be used without .Cm left . To set a big right delimiter without a big left delimiter, the following construction can be used: .Pp .D1 Cm left No \(dq\(dq Ar box Cm right Ar delimiter .It Cm roman Set the following box using the default font. .It Cm rpile Like .Cm cpile , but subequations are right-justified. .It Cm size Set the second argument with the font size specified by the first argument; currently ignored by .Xr mandoc 1 . By prepending a plus or minus sign to the first argument, the font size can be selected relative to the current size. .It Cm sqrt Set the square root of the following box. .It Cm sub Set the following box as a subscript to the preceding box. .It Cm sup Set the following box as a superscript to the preceding box. As a special case, if a .Cm sup clause immediately follows a .Cm sub clause as in .Pp .D1 Ar mainbox Cm sub Ar subbox Cm sup Ar supbox .Pp both are set with respect to the same .Ar mainbox , that is, .Ar supbox is set above .Ar subbox . .It Cm tilde Set a tilde over the preceding box. .It Cm to Set the following box above the preceding box, using a slightly smaller font. Used for sums and integrals and the like. As a special case, if a .Cm to clause immediately follows a .Cm from clause as in .Pp .D1 Ar mainbox Cm from Ar frombox Cm to Ar tobox .Pp both are set below and above the same .Ar mainbox . .It Cm under Underline the preceding box. .It Cm vec Set a vector symbol (right arrow) over the preceding box. .El .Pp The binary operations .Cm from , .Cm to , .Cm sub , and .Cm sup group to the right, that is, .Pp .D1 Ar mainbox Cm sup Ar supbox Cm sub Ar subbox .Pp is the same as .Pp .D1 Ar mainbox Cm sup Brq Ar supbox Cm sub Ar subbox .Pp and different from .Pp .D1 Bro Ar mainbox Cm sup Ar supbox Brc Cm sub Ar subbox . .Pp By contrast, .Cm over groups to the left. .Pp In the following list, earlier operations bind more tightly than later operations: .Pp .Bl -enum -compact .It .Cm dyad , .Cm vec , .Cm under , .Cm bar , .Cm tilde , .Cm hat , .Cm dot , .Cm dotdot .It .Cm fat , .Cm roman , .Cm italic , .Cm bold , .Cm size .It .Cm sub , .Cm sup .It .Cm sqrt .It .Cm over .It .Cm from , .Cm to .El .Sh COMPATIBILITY This section documents the compatibility of mandoc .Nm and the troff .Nm implementation (including GNU troff). .Pp .Bl -dash -compact .It The text string .Sq \e\(dq is interpreted as a literal quote in troff. In mandoc, this is interpreted as a comment. .It In troff, The circumflex and tilde white-space symbols map to fixed-width spaces. In mandoc, these characters are synonyms for the space character. .It The troff implementation of .Nm allows for equation alignment with the .Cm mark and .Cm lineup tokens. mandoc discards these tokens. The .Cm back Ar n , .Cm fwd Ar n , .Cm up Ar n , and .Cm down Ar n commands are also ignored. .El .Sh SEE ALSO .Xr mandoc 1 , .Xr man 7 , .Xr mandoc_char 7 , .Xr mdoc 7 , .Xr roff 7 .Rs .%A Brian W. Kernighan .%A Lorinda L. Cherry .%T System for Typesetting Mathematics .%J Communications of the ACM .%V 18 .%P 151\(en157 .%D March, 1975 .Re .Rs .%A Brian W. Kernighan .%A Lorinda L. Cherry .%T Typesetting Mathematics, User's Guide .%D 1976 .Re .Rs .%A Brian W. Kernighan .%A Lorinda L. Cherry .%T Typesetting Mathematics, User's Guide (Second Edition) .%D 1978 .Re .Sh HISTORY The eqn utility, a preprocessor for troff, was originally written by Brian W. Kernighan and Lorinda L. Cherry in 1975. The GNU reimplementation of eqn, part of the GNU troff package, was released in 1989 by James Clark. The eqn component of .Xr mandoc 1 was added in 2011. .Sh AUTHORS This .Nm reference was written by .An Kristaps Dzonsons Aq Mt kristaps@bsd.lv . Index: vendor/mdocml/dist/eqn.c =================================================================== --- vendor/mdocml/dist/eqn.c (revision 321806) +++ vendor/mdocml/dist/eqn.c (revision 321807) @@ -1,1131 +1,1103 @@ -/* $Id: eqn.c,v 1.62 2017/03/11 15:43:04 schwarze Exp $ */ +/* $Id: eqn.c,v 1.78 2017/07/15 16:26:17 schwarze Exp $ */ /* * Copyright (c) 2011, 2014 Kristaps Dzonsons - * Copyright (c) 2014, 2015 Ingo Schwarze + * Copyright (c) 2014, 2015, 2017 Ingo Schwarze * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "config.h" #include #include +#include #include #include #include #include #include -#include "mandoc.h" #include "mandoc_aux.h" +#include "mandoc.h" +#include "roff.h" #include "libmandoc.h" #include "libroff.h" #define EQN_NEST_MAX 128 /* maximum nesting of defines */ #define STRNEQ(p1, sz1, p2, sz2) \ ((sz1) == (sz2) && 0 == strncmp((p1), (p2), (sz1))) enum eqn_tok { EQN_TOK_DYAD = 0, EQN_TOK_VEC, EQN_TOK_UNDER, EQN_TOK_BAR, EQN_TOK_TILDE, EQN_TOK_HAT, EQN_TOK_DOT, EQN_TOK_DOTDOT, EQN_TOK_FWD, EQN_TOK_BACK, EQN_TOK_DOWN, EQN_TOK_UP, EQN_TOK_FAT, EQN_TOK_ROMAN, EQN_TOK_ITALIC, EQN_TOK_BOLD, EQN_TOK_SIZE, EQN_TOK_SUB, EQN_TOK_SUP, EQN_TOK_SQRT, EQN_TOK_OVER, EQN_TOK_FROM, EQN_TOK_TO, EQN_TOK_BRACE_OPEN, EQN_TOK_BRACE_CLOSE, EQN_TOK_GSIZE, EQN_TOK_GFONT, EQN_TOK_MARK, EQN_TOK_LINEUP, EQN_TOK_LEFT, EQN_TOK_RIGHT, EQN_TOK_PILE, EQN_TOK_LPILE, EQN_TOK_RPILE, EQN_TOK_CPILE, EQN_TOK_MATRIX, EQN_TOK_CCOL, EQN_TOK_LCOL, EQN_TOK_RCOL, EQN_TOK_DELIM, EQN_TOK_DEFINE, EQN_TOK_TDEFINE, EQN_TOK_NDEFINE, EQN_TOK_UNDEF, - EQN_TOK_EOF, EQN_TOK_ABOVE, - EQN_TOK__MAX + EQN_TOK__MAX, + EQN_TOK_FUNC, + EQN_TOK_QUOTED, + EQN_TOK_SYM, + EQN_TOK_EOF }; static const char *eqn_toks[EQN_TOK__MAX] = { "dyad", /* EQN_TOK_DYAD */ "vec", /* EQN_TOK_VEC */ "under", /* EQN_TOK_UNDER */ "bar", /* EQN_TOK_BAR */ "tilde", /* EQN_TOK_TILDE */ "hat", /* EQN_TOK_HAT */ "dot", /* EQN_TOK_DOT */ "dotdot", /* EQN_TOK_DOTDOT */ "fwd", /* EQN_TOK_FWD * */ "back", /* EQN_TOK_BACK */ "down", /* EQN_TOK_DOWN */ "up", /* EQN_TOK_UP */ "fat", /* EQN_TOK_FAT */ "roman", /* EQN_TOK_ROMAN */ "italic", /* EQN_TOK_ITALIC */ "bold", /* EQN_TOK_BOLD */ "size", /* EQN_TOK_SIZE */ "sub", /* EQN_TOK_SUB */ "sup", /* EQN_TOK_SUP */ "sqrt", /* EQN_TOK_SQRT */ "over", /* EQN_TOK_OVER */ "from", /* EQN_TOK_FROM */ "to", /* EQN_TOK_TO */ "{", /* EQN_TOK_BRACE_OPEN */ "}", /* EQN_TOK_BRACE_CLOSE */ "gsize", /* EQN_TOK_GSIZE */ "gfont", /* EQN_TOK_GFONT */ "mark", /* EQN_TOK_MARK */ "lineup", /* EQN_TOK_LINEUP */ "left", /* EQN_TOK_LEFT */ "right", /* EQN_TOK_RIGHT */ "pile", /* EQN_TOK_PILE */ "lpile", /* EQN_TOK_LPILE */ "rpile", /* EQN_TOK_RPILE */ "cpile", /* EQN_TOK_CPILE */ "matrix", /* EQN_TOK_MATRIX */ "ccol", /* EQN_TOK_CCOL */ "lcol", /* EQN_TOK_LCOL */ "rcol", /* EQN_TOK_RCOL */ "delim", /* EQN_TOK_DELIM */ "define", /* EQN_TOK_DEFINE */ "tdefine", /* EQN_TOK_TDEFINE */ "ndefine", /* EQN_TOK_NDEFINE */ "undef", /* EQN_TOK_UNDEF */ - NULL, /* EQN_TOK_EOF */ "above", /* EQN_TOK_ABOVE */ }; +static const char *const eqn_func[] = { + "acos", "acsc", "and", "arc", "asec", "asin", "atan", + "cos", "cosh", "coth", "csc", "det", "exp", "for", + "if", "lim", "ln", "log", "max", "min", + "sec", "sin", "sinh", "tan", "tanh", "Im", "Re", +}; + enum eqn_symt { - EQNSYM_alpha, + EQNSYM_alpha = 0, EQNSYM_beta, EQNSYM_chi, EQNSYM_delta, EQNSYM_epsilon, EQNSYM_eta, EQNSYM_gamma, EQNSYM_iota, EQNSYM_kappa, EQNSYM_lambda, EQNSYM_mu, EQNSYM_nu, EQNSYM_omega, EQNSYM_omicron, EQNSYM_phi, EQNSYM_pi, EQNSYM_ps, EQNSYM_rho, EQNSYM_sigma, EQNSYM_tau, EQNSYM_theta, EQNSYM_upsilon, EQNSYM_xi, EQNSYM_zeta, EQNSYM_DELTA, EQNSYM_GAMMA, EQNSYM_LAMBDA, EQNSYM_OMEGA, EQNSYM_PHI, EQNSYM_PI, EQNSYM_PSI, EQNSYM_SIGMA, EQNSYM_THETA, EQNSYM_UPSILON, EQNSYM_XI, EQNSYM_inter, EQNSYM_union, EQNSYM_prod, EQNSYM_int, EQNSYM_sum, EQNSYM_grad, EQNSYM_del, EQNSYM_times, EQNSYM_cdot, EQNSYM_nothing, EQNSYM_approx, EQNSYM_prime, EQNSYM_half, EQNSYM_partial, EQNSYM_inf, EQNSYM_muchgreat, EQNSYM_muchless, EQNSYM_larrow, EQNSYM_rarrow, EQNSYM_pm, EQNSYM_nequal, EQNSYM_equiv, EQNSYM_lessequal, EQNSYM_moreequal, EQNSYM_minus, EQNSYM__MAX }; struct eqnsym { const char *str; const char *sym; }; static const struct eqnsym eqnsyms[EQNSYM__MAX] = { { "alpha", "*a" }, /* EQNSYM_alpha */ { "beta", "*b" }, /* EQNSYM_beta */ { "chi", "*x" }, /* EQNSYM_chi */ { "delta", "*d" }, /* EQNSYM_delta */ { "epsilon", "*e" }, /* EQNSYM_epsilon */ { "eta", "*y" }, /* EQNSYM_eta */ { "gamma", "*g" }, /* EQNSYM_gamma */ { "iota", "*i" }, /* EQNSYM_iota */ { "kappa", "*k" }, /* EQNSYM_kappa */ { "lambda", "*l" }, /* EQNSYM_lambda */ { "mu", "*m" }, /* EQNSYM_mu */ { "nu", "*n" }, /* EQNSYM_nu */ { "omega", "*w" }, /* EQNSYM_omega */ { "omicron", "*o" }, /* EQNSYM_omicron */ { "phi", "*f" }, /* EQNSYM_phi */ { "pi", "*p" }, /* EQNSYM_pi */ { "psi", "*q" }, /* EQNSYM_psi */ { "rho", "*r" }, /* EQNSYM_rho */ { "sigma", "*s" }, /* EQNSYM_sigma */ { "tau", "*t" }, /* EQNSYM_tau */ { "theta", "*h" }, /* EQNSYM_theta */ { "upsilon", "*u" }, /* EQNSYM_upsilon */ { "xi", "*c" }, /* EQNSYM_xi */ { "zeta", "*z" }, /* EQNSYM_zeta */ { "DELTA", "*D" }, /* EQNSYM_DELTA */ { "GAMMA", "*G" }, /* EQNSYM_GAMMA */ { "LAMBDA", "*L" }, /* EQNSYM_LAMBDA */ { "OMEGA", "*W" }, /* EQNSYM_OMEGA */ { "PHI", "*F" }, /* EQNSYM_PHI */ { "PI", "*P" }, /* EQNSYM_PI */ { "PSI", "*Q" }, /* EQNSYM_PSI */ { "SIGMA", "*S" }, /* EQNSYM_SIGMA */ { "THETA", "*H" }, /* EQNSYM_THETA */ { "UPSILON", "*U" }, /* EQNSYM_UPSILON */ { "XI", "*C" }, /* EQNSYM_XI */ { "inter", "ca" }, /* EQNSYM_inter */ { "union", "cu" }, /* EQNSYM_union */ { "prod", "product" }, /* EQNSYM_prod */ { "int", "integral" }, /* EQNSYM_int */ { "sum", "sum" }, /* EQNSYM_sum */ { "grad", "gr" }, /* EQNSYM_grad */ { "del", "gr" }, /* EQNSYM_del */ { "times", "mu" }, /* EQNSYM_times */ { "cdot", "pc" }, /* EQNSYM_cdot */ { "nothing", "&" }, /* EQNSYM_nothing */ { "approx", "~~" }, /* EQNSYM_approx */ { "prime", "fm" }, /* EQNSYM_prime */ { "half", "12" }, /* EQNSYM_half */ { "partial", "pd" }, /* EQNSYM_partial */ { "inf", "if" }, /* EQNSYM_inf */ { ">>", ">>" }, /* EQNSYM_muchgreat */ { "<<", "<<" }, /* EQNSYM_muchless */ { "<-", "<-" }, /* EQNSYM_larrow */ { "->", "->" }, /* EQNSYM_rarrow */ { "+-", "+-" }, /* EQNSYM_pm */ { "!=", "!=" }, /* EQNSYM_nequal */ { "==", "==" }, /* EQNSYM_equiv */ { "<=", "<=" }, /* EQNSYM_lessequal */ { ">=", ">=" }, /* EQNSYM_moreequal */ { "-", "mi" }, /* EQNSYM_minus */ }; +enum parse_mode { + MODE_QUOTED, + MODE_NOSUB, + MODE_SUB, + MODE_TOK +}; + static struct eqn_box *eqn_box_alloc(struct eqn_node *, struct eqn_box *); -static void eqn_box_free(struct eqn_box *); static struct eqn_box *eqn_box_makebinary(struct eqn_node *, - enum eqn_post, struct eqn_box *); + struct eqn_box *); static void eqn_def(struct eqn_node *); -static struct eqn_def *eqn_def_find(struct eqn_node *, const char *, size_t); +static struct eqn_def *eqn_def_find(struct eqn_node *); static void eqn_delim(struct eqn_node *); -static const char *eqn_next(struct eqn_node *, char, size_t *, int); -static const char *eqn_nextrawtok(struct eqn_node *, size_t *); -static const char *eqn_nexttok(struct eqn_node *, size_t *); -static enum rofferr eqn_parse(struct eqn_node *, struct eqn_box *); -static enum eqn_tok eqn_tok_parse(struct eqn_node *, char **); +static enum eqn_tok eqn_next(struct eqn_node *, enum parse_mode); static void eqn_undef(struct eqn_node *); -enum rofferr -eqn_read(struct eqn_node **epp, int ln, - const char *p, int pos, int *offs) +struct eqn_node * +eqn_alloc(struct mparse *parse) { - size_t sz; - struct eqn_node *ep; - enum rofferr er; + struct eqn_node *ep; - ep = *epp; + ep = mandoc_calloc(1, sizeof(*ep)); + ep->parse = parse; + ep->gsize = EQN_DEFSIZE; + return ep; +} - /* - * If we're the terminating mark, unset our equation status and - * validate the full equation. - */ - - if (0 == strncmp(p, ".EN", 3)) { - er = eqn_end(epp); - p += 3; - while (' ' == *p || '\t' == *p) - p++; - if ('\0' == *p) - return er; - mandoc_vmsg(MANDOCERR_ARG_SKIP, ep->parse, - ln, pos, "EN %s", p); - return er; - } - - /* - * Build up the full string, replacing all newlines with regular - * whitespace. - */ - - sz = strlen(p + pos) + 1; - ep->data = mandoc_realloc(ep->data, ep->sz + sz + 1); - - /* First invocation: nil terminate the string. */ - - if (0 == ep->sz) - *ep->data = '\0'; - - ep->sz += sz; - strlcat(ep->data, p + pos, ep->sz + 1); - strlcat(ep->data, " ", ep->sz + 1); - return ROFF_IGN; +void +eqn_reset(struct eqn_node *ep) +{ + free(ep->data); + ep->data = ep->start = ep->end = NULL; + ep->sz = ep->toksz = 0; } -struct eqn_node * -eqn_alloc(int pos, int line, struct mparse *parse) +void +eqn_read(struct eqn_node *ep, const char *p) { - struct eqn_node *p; + char *cp; - p = mandoc_calloc(1, sizeof(struct eqn_node)); - - p->parse = parse; - p->eqn.ln = line; - p->eqn.pos = pos; - p->gsize = EQN_DEFSIZE; - - return p; + if (ep->data == NULL) { + ep->sz = strlen(p); + ep->data = mandoc_strdup(p); + } else { + ep->sz = mandoc_asprintf(&cp, "%s %s", ep->data, p); + free(ep->data); + ep->data = cp; + } + ep->sz += 1; } /* * Find the key "key" of the give size within our eqn-defined values. */ static struct eqn_def * -eqn_def_find(struct eqn_node *ep, const char *key, size_t sz) +eqn_def_find(struct eqn_node *ep) { int i; for (i = 0; i < (int)ep->defsz; i++) if (ep->defs[i].keysz && STRNEQ(ep->defs[i].key, - ep->defs[i].keysz, key, sz)) + ep->defs[i].keysz, ep->start, ep->toksz)) return &ep->defs[i]; return NULL; } /* - * Get the next token from the input stream using the given quote - * character. - * Optionally make any replacements. + * Parse a token from the input text. The modes are: + * MODE_QUOTED: Use *ep->start as the delimiter; the token ends + * before its next occurence. Do not interpret the token in any + * way and return EQN_TOK_QUOTED. All other modes behave like + * MODE_QUOTED when *ep->start is '"'. + * MODE_NOSUB: If *ep->start is a curly brace, the token ends after it; + * otherwise, it ends before the next whitespace or brace. + * Do not interpret the token and return EQN_TOK__MAX. + * MODE_SUB: Like MODE_NOSUB, but try to interpret the token as an + * alias created with define. If it is an alias, replace it with + * its string value and reparse. + * MODE_TOK: Like MODE_SUB, but also check the token against the list + * of tokens, and if there is a match, return that token. Otherwise, + * if the token matches a symbol, return EQN_TOK_SYM; if it matches + * a function name, EQN_TOK_FUNC, or else EQN_TOK__MAX. Except for + * a token match, *ep->start is set to an allocated string that the + * caller is expected to free. + * All modes skip whitespace following the end of the token. */ -static const char * -eqn_next(struct eqn_node *ep, char quote, size_t *sz, int repl) +static enum eqn_tok +eqn_next(struct eqn_node *ep, enum parse_mode mode) { - static size_t last_len; - static int lim; + static int last_len, lim; - char *start, *next; - int q, diff; - size_t ssz, dummy; struct eqn_def *def; + size_t start; + int diff, i, quoted; + enum eqn_tok tok; - if (NULL == sz) - sz = &dummy; - - if (ep->cur >= last_len) + /* + * Reset the recursion counter after advancing + * beyond the end of the previous substitution. + */ + if (ep->end - ep->data >= last_len) lim = 0; - ep->rew = ep->cur; -again: - /* Prevent self-definitions. */ - if (lim >= EQN_NEST_MAX) { - mandoc_msg(MANDOCERR_ROFFLOOP, ep->parse, - ep->eqn.ln, ep->eqn.pos, NULL); - return NULL; - } + ep->start = ep->end; + quoted = mode == MODE_QUOTED; + for (;;) { + switch (*ep->start) { + case '\0': + ep->toksz = 0; + return EQN_TOK_EOF; + case '"': + quoted = 1; + break; + default: + break; + } + if (quoted) { + ep->end = strchr(ep->start + 1, *ep->start); + ep->start++; /* Skip opening quote. */ + if (ep->end == NULL) { + mandoc_msg(MANDOCERR_ARG_QUOTE, ep->parse, + ep->node->line, ep->node->pos, NULL); + ep->end = strchr(ep->start, '\0'); + } + } else { + ep->end = ep->start + 1; + if (*ep->start != '{' && *ep->start != '}') + ep->end += strcspn(ep->end, " ^~\"{}\t"); + } + ep->toksz = ep->end - ep->start; + if (quoted && *ep->end != '\0') + ep->end++; /* Skip closing quote. */ + while (*ep->end != '\0' && strchr(" \t^~", *ep->end) != NULL) + ep->end++; + if (quoted) /* Cannot return, may have to strndup. */ + break; + if (mode == MODE_NOSUB) + return EQN_TOK__MAX; + if ((def = eqn_def_find(ep)) == NULL) + break; + if (++lim > EQN_NEST_MAX) { + mandoc_msg(MANDOCERR_ROFFLOOP, ep->parse, + ep->node->line, ep->node->pos, NULL); + return EQN_TOK_EOF; + } - ep->cur = ep->rew; - start = &ep->data[(int)ep->cur]; - q = 0; - - if ('\0' == *start) - return NULL; - - if (quote == *start) { - ep->cur++; - q = 1; - } - - start = &ep->data[(int)ep->cur]; - - if ( ! q) { - if ('{' == *start || '}' == *start) - ssz = 1; - else - ssz = strcspn(start + 1, " ^~\"{}\t") + 1; - next = start + (int)ssz; - if ('\0' == *next) - next = NULL; - } else - next = strchr(start, quote); - - if (NULL != next) { - *sz = (size_t)(next - start); - ep->cur += *sz; - if (q) - ep->cur++; - while (' ' == ep->data[(int)ep->cur] || - '\t' == ep->data[(int)ep->cur] || - '^' == ep->data[(int)ep->cur] || - '~' == ep->data[(int)ep->cur]) - ep->cur++; - } else { - if (q) - mandoc_msg(MANDOCERR_ARG_QUOTE, ep->parse, - ep->eqn.ln, ep->eqn.pos, NULL); - next = strchr(start, '\0'); - *sz = (size_t)(next - start); - ep->cur += *sz; - } - - /* Quotes aren't expanded for values. */ - - if (q || ! repl) - return start; - - if (NULL != (def = eqn_def_find(ep, start, *sz))) { - diff = def->valsz - *sz; - - if (def->valsz > *sz) { + /* Replace a defined name with its string value. */ + if ((diff = def->valsz - ep->toksz) > 0) { + start = ep->start - ep->data; ep->sz += diff; ep->data = mandoc_realloc(ep->data, ep->sz + 1); - ep->data[ep->sz] = '\0'; - start = &ep->data[(int)ep->rew]; + ep->start = ep->data + start; } - - diff = def->valsz - *sz; - memmove(start + *sz + diff, start + *sz, - (strlen(start) - *sz) + 1); - memcpy(start, def->val, def->valsz); - last_len = start - ep->data + def->valsz; - lim++; - goto again; + if (diff) + memmove(ep->start + def->valsz, ep->start + ep->toksz, + strlen(ep->start + ep->toksz) + 1); + memcpy(ep->start, def->val, def->valsz); + last_len = ep->start - ep->data + def->valsz; } - - return start; -} - -/* - * Get the next delimited token using the default current quote - * character. - */ -static const char * -eqn_nexttok(struct eqn_node *ep, size_t *sz) -{ - - return eqn_next(ep, '"', sz, 1); -} - -/* - * Get next token without replacement. - */ -static const char * -eqn_nextrawtok(struct eqn_node *ep, size_t *sz) -{ - - return eqn_next(ep, '"', sz, 0); -} - -/* - * Parse a token from the stream of text. - * A token consists of one of the recognised eqn(7) strings. - * Strings are separated by delimiting marks. - * This returns EQN_TOK_EOF when there are no more tokens. - * If the token is an unrecognised string literal, then it returns - * EQN_TOK__MAX and sets the "p" pointer to an allocated, nil-terminated - * string. - * This must be later freed with free(3). - */ -static enum eqn_tok -eqn_tok_parse(struct eqn_node *ep, char **p) -{ - const char *start; - size_t i, sz; - int quoted; - - if (NULL != p) - *p = NULL; - - quoted = ep->data[ep->cur] == '"'; - - if (NULL == (start = eqn_nexttok(ep, &sz))) - return EQN_TOK_EOF; - + if (mode != MODE_TOK) + return quoted ? EQN_TOK_QUOTED : EQN_TOK__MAX; if (quoted) { - if (p != NULL) - *p = mandoc_strndup(start, sz); - return EQN_TOK__MAX; + ep->start = mandoc_strndup(ep->start, ep->toksz); + return EQN_TOK_QUOTED; } + for (tok = 0; tok < EQN_TOK__MAX; tok++) + if (STRNEQ(ep->start, ep->toksz, + eqn_toks[tok], strlen(eqn_toks[tok]))) + return tok; - for (i = 0; i < EQN_TOK__MAX; i++) { - if (NULL == eqn_toks[i]) - continue; - if (STRNEQ(start, sz, eqn_toks[i], strlen(eqn_toks[i]))) - break; + for (i = 0; i < EQNSYM__MAX; i++) { + if (STRNEQ(ep->start, ep->toksz, + eqnsyms[i].str, strlen(eqnsyms[i].str))) { + mandoc_asprintf(&ep->start, + "\\[%s]", eqnsyms[i].sym); + return EQN_TOK_SYM; + } } - - if (i == EQN_TOK__MAX && NULL != p) - *p = mandoc_strndup(start, sz); - - return i; + ep->start = mandoc_strndup(ep->start, ep->toksz); + for (i = 0; i < (int)(sizeof(eqn_func)/sizeof(*eqn_func)); i++) + if (STRNEQ(ep->start, ep->toksz, + eqn_func[i], strlen(eqn_func[i]))) + return EQN_TOK_FUNC; + return EQN_TOK__MAX; } -static void +void eqn_box_free(struct eqn_box *bp) { if (bp->first) eqn_box_free(bp->first); if (bp->next) eqn_box_free(bp->next); free(bp->text); free(bp->left); free(bp->right); free(bp->top); free(bp->bottom); free(bp); } /* * Allocate a box as the last child of the parent node. */ static struct eqn_box * eqn_box_alloc(struct eqn_node *ep, struct eqn_box *parent) { struct eqn_box *bp; bp = mandoc_calloc(1, sizeof(struct eqn_box)); bp->parent = parent; bp->parent->args++; bp->expectargs = UINT_MAX; + bp->font = bp->parent->font; bp->size = ep->gsize; if (NULL != parent->first) { parent->last->next = bp; bp->prev = parent->last; } else parent->first = bp; parent->last = bp; return bp; } /* * Reparent the current last node (of the current parent) under a new * EQN_SUBEXPR as the first element. * Then return the new parent. * The new EQN_SUBEXPR will have a two-child limit. */ static struct eqn_box * -eqn_box_makebinary(struct eqn_node *ep, - enum eqn_post pos, struct eqn_box *parent) +eqn_box_makebinary(struct eqn_node *ep, struct eqn_box *parent) { struct eqn_box *b, *newb; assert(NULL != parent->last); b = parent->last; if (parent->last == parent->first) parent->first = NULL; parent->args--; parent->last = b->prev; b->prev = NULL; newb = eqn_box_alloc(ep, parent); - newb->pos = pos; newb->type = EQN_SUBEXPR; newb->expectargs = 2; newb->args = 1; newb->first = newb->last = b; newb->first->next = NULL; b->parent = newb; return newb; } /* * Parse the "delim" control statement. */ static void eqn_delim(struct eqn_node *ep) { - const char *start; - size_t sz; - - if ((start = eqn_nextrawtok(ep, &sz)) == NULL) + if (ep->end[0] == '\0' || ep->end[1] == '\0') { mandoc_msg(MANDOCERR_REQ_EMPTY, ep->parse, - ep->eqn.ln, ep->eqn.pos, "delim"); - else if (strncmp(start, "off", 3) == 0) + ep->node->line, ep->node->pos, "delim"); + if (ep->end[0] != '\0') + ep->end++; + } else if (strncmp(ep->end, "off", 3) == 0) { ep->delim = 0; - else if (strncmp(start, "on", 2) == 0) { + ep->end += 3; + } else if (strncmp(ep->end, "on", 2) == 0) { if (ep->odelim && ep->cdelim) ep->delim = 1; - } else if (start[1] != '\0') { - ep->odelim = start[0]; - ep->cdelim = start[1]; + ep->end += 2; + } else { + ep->odelim = *ep->end++; + ep->cdelim = *ep->end++; ep->delim = 1; } } /* * Undefine a previously-defined string. */ static void eqn_undef(struct eqn_node *ep) { - const char *start; struct eqn_def *def; - size_t sz; - if ((start = eqn_nextrawtok(ep, &sz)) == NULL) { + if (eqn_next(ep, MODE_NOSUB) == EQN_TOK_EOF) { mandoc_msg(MANDOCERR_REQ_EMPTY, ep->parse, - ep->eqn.ln, ep->eqn.pos, "undef"); + ep->node->line, ep->node->pos, "undef"); return; } - if ((def = eqn_def_find(ep, start, sz)) == NULL) + if ((def = eqn_def_find(ep)) == NULL) return; free(def->key); free(def->val); def->key = def->val = NULL; def->keysz = def->valsz = 0; } static void eqn_def(struct eqn_node *ep) { - const char *start; - size_t sz; struct eqn_def *def; int i; - if ((start = eqn_nextrawtok(ep, &sz)) == NULL) { + if (eqn_next(ep, MODE_NOSUB) == EQN_TOK_EOF) { mandoc_msg(MANDOCERR_REQ_EMPTY, ep->parse, - ep->eqn.ln, ep->eqn.pos, "define"); + ep->node->line, ep->node->pos, "define"); return; } /* * Search for a key that already exists. * Create a new key if none is found. */ - if (NULL == (def = eqn_def_find(ep, start, sz))) { + if ((def = eqn_def_find(ep)) == NULL) { /* Find holes in string array. */ for (i = 0; i < (int)ep->defsz; i++) if (0 == ep->defs[i].keysz) break; if (i == (int)ep->defsz) { ep->defsz++; ep->defs = mandoc_reallocarray(ep->defs, ep->defsz, sizeof(struct eqn_def)); ep->defs[i].key = ep->defs[i].val = NULL; } def = ep->defs + i; free(def->key); - def->key = mandoc_strndup(start, sz); - def->keysz = sz; + def->key = mandoc_strndup(ep->start, ep->toksz); + def->keysz = ep->toksz; } - start = eqn_next(ep, ep->data[(int)ep->cur], &sz, 0); - if (start == NULL) { + if (eqn_next(ep, MODE_QUOTED) == EQN_TOK_EOF) { mandoc_vmsg(MANDOCERR_REQ_EMPTY, ep->parse, - ep->eqn.ln, ep->eqn.pos, "define %s", def->key); + ep->node->line, ep->node->pos, "define %s", def->key); free(def->key); free(def->val); def->key = def->val = NULL; def->keysz = def->valsz = 0; return; } free(def->val); - def->val = mandoc_strndup(start, sz); - def->valsz = sz; + def->val = mandoc_strndup(ep->start, ep->toksz); + def->valsz = ep->toksz; } -/* - * Recursively parse an eqn(7) expression. - */ -static enum rofferr -eqn_parse(struct eqn_node *ep, struct eqn_box *parent) +void +eqn_parse(struct eqn_node *ep) { - char sym[64]; - struct eqn_box *cur; - const char *start; + struct eqn_box *cur, *nbox, *parent, *split; + const char *cp, *cpn; char *p; - size_t i, sz; - enum eqn_tok tok, subtok; - enum eqn_post pos; + enum eqn_tok tok; + enum { CCL_LET, CCL_DIG, CCL_PUN } ccl, ccln; int size; + parent = ep->node->eqn; assert(parent != NULL); /* * Empty equation. * Do not add it to the high-level syntax tree. */ if (ep->data == NULL) - return ROFF_IGN; + return; -next_tok: - tok = eqn_tok_parse(ep, &p); + ep->start = ep->end = ep->data + strspn(ep->data, " ^~"); -this_tok: +next_tok: + tok = eqn_next(ep, MODE_TOK); switch (tok) { - case (EQN_TOK_UNDEF): + case EQN_TOK_UNDEF: eqn_undef(ep); break; - case (EQN_TOK_NDEFINE): - case (EQN_TOK_DEFINE): + case EQN_TOK_NDEFINE: + case EQN_TOK_DEFINE: eqn_def(ep); break; - case (EQN_TOK_TDEFINE): - if (eqn_nextrawtok(ep, NULL) == NULL || - eqn_next(ep, ep->data[(int)ep->cur], NULL, 0) == NULL) + case EQN_TOK_TDEFINE: + if (eqn_next(ep, MODE_NOSUB) == EQN_TOK_EOF || + eqn_next(ep, MODE_QUOTED) == EQN_TOK_EOF) mandoc_msg(MANDOCERR_REQ_EMPTY, ep->parse, - ep->eqn.ln, ep->eqn.pos, "tdefine"); + ep->node->line, ep->node->pos, "tdefine"); break; - case (EQN_TOK_DELIM): + case EQN_TOK_DELIM: eqn_delim(ep); break; - case (EQN_TOK_GFONT): - if (eqn_nextrawtok(ep, NULL) == NULL) + case EQN_TOK_GFONT: + if (eqn_next(ep, MODE_SUB) == EQN_TOK_EOF) mandoc_msg(MANDOCERR_REQ_EMPTY, ep->parse, - ep->eqn.ln, ep->eqn.pos, eqn_toks[tok]); + ep->node->line, ep->node->pos, eqn_toks[tok]); break; - case (EQN_TOK_MARK): - case (EQN_TOK_LINEUP): + case EQN_TOK_MARK: + case EQN_TOK_LINEUP: /* Ignore these. */ break; - case (EQN_TOK_DYAD): - case (EQN_TOK_VEC): - case (EQN_TOK_UNDER): - case (EQN_TOK_BAR): - case (EQN_TOK_TILDE): - case (EQN_TOK_HAT): - case (EQN_TOK_DOT): - case (EQN_TOK_DOTDOT): + case EQN_TOK_DYAD: + case EQN_TOK_VEC: + case EQN_TOK_UNDER: + case EQN_TOK_BAR: + case EQN_TOK_TILDE: + case EQN_TOK_HAT: + case EQN_TOK_DOT: + case EQN_TOK_DOTDOT: if (parent->last == NULL) { mandoc_msg(MANDOCERR_EQN_NOBOX, ep->parse, - ep->eqn.ln, ep->eqn.pos, eqn_toks[tok]); + ep->node->line, ep->node->pos, eqn_toks[tok]); cur = eqn_box_alloc(ep, parent); cur->type = EQN_TEXT; cur->text = mandoc_strdup(""); } - parent = eqn_box_makebinary(ep, EQNPOS_NONE, parent); - parent->type = EQN_LISTONE; + parent = eqn_box_makebinary(ep, parent); + parent->type = EQN_LIST; parent->expectargs = 1; + parent->font = EQNFONT_ROMAN; switch (tok) { - case (EQN_TOK_DOTDOT): - strlcpy(sym, "\\[ad]", sizeof(sym)); + case EQN_TOK_DOTDOT: + parent->top = mandoc_strdup("\\[ad]"); break; - case (EQN_TOK_VEC): - strlcpy(sym, "\\[->]", sizeof(sym)); + case EQN_TOK_VEC: + parent->top = mandoc_strdup("\\[->]"); break; - case (EQN_TOK_DYAD): - strlcpy(sym, "\\[<>]", sizeof(sym)); + case EQN_TOK_DYAD: + parent->top = mandoc_strdup("\\[<>]"); break; - case (EQN_TOK_TILDE): - strlcpy(sym, "\\[a~]", sizeof(sym)); + case EQN_TOK_TILDE: + parent->top = mandoc_strdup("\\[a~]"); break; - case (EQN_TOK_UNDER): - strlcpy(sym, "\\[ul]", sizeof(sym)); + case EQN_TOK_UNDER: + parent->bottom = mandoc_strdup("\\[ul]"); break; - case (EQN_TOK_BAR): - strlcpy(sym, "\\[rl]", sizeof(sym)); + case EQN_TOK_BAR: + parent->top = mandoc_strdup("\\[rn]"); break; - case (EQN_TOK_DOT): - strlcpy(sym, "\\[a.]", sizeof(sym)); + case EQN_TOK_DOT: + parent->top = mandoc_strdup("\\[a.]"); break; - case (EQN_TOK_HAT): - strlcpy(sym, "\\[ha]", sizeof(sym)); + case EQN_TOK_HAT: + parent->top = mandoc_strdup("\\[ha]"); break; default: abort(); } - - switch (tok) { - case (EQN_TOK_DOTDOT): - case (EQN_TOK_VEC): - case (EQN_TOK_DYAD): - case (EQN_TOK_TILDE): - case (EQN_TOK_BAR): - case (EQN_TOK_DOT): - case (EQN_TOK_HAT): - parent->top = mandoc_strdup(sym); - break; - case (EQN_TOK_UNDER): - parent->bottom = mandoc_strdup(sym); - break; - default: - abort(); - } parent = parent->parent; break; - case (EQN_TOK_FWD): - case (EQN_TOK_BACK): - case (EQN_TOK_DOWN): - case (EQN_TOK_UP): - subtok = eqn_tok_parse(ep, NULL); - if (subtok != EQN_TOK__MAX) { + case EQN_TOK_FWD: + case EQN_TOK_BACK: + case EQN_TOK_DOWN: + case EQN_TOK_UP: + if (eqn_next(ep, MODE_SUB) == EQN_TOK_EOF) mandoc_msg(MANDOCERR_REQ_EMPTY, ep->parse, - ep->eqn.ln, ep->eqn.pos, eqn_toks[tok]); - tok = subtok; - goto this_tok; - } + ep->node->line, ep->node->pos, eqn_toks[tok]); break; - case (EQN_TOK_FAT): - case (EQN_TOK_ROMAN): - case (EQN_TOK_ITALIC): - case (EQN_TOK_BOLD): + case EQN_TOK_FAT: + case EQN_TOK_ROMAN: + case EQN_TOK_ITALIC: + case EQN_TOK_BOLD: while (parent->args == parent->expectargs) parent = parent->parent; /* * These values apply to the next word or sequence of * words; thus, we mark that we'll have a child with * exactly one of those. */ parent = eqn_box_alloc(ep, parent); - parent->type = EQN_LISTONE; + parent->type = EQN_LIST; parent->expectargs = 1; switch (tok) { - case (EQN_TOK_FAT): + case EQN_TOK_FAT: parent->font = EQNFONT_FAT; break; - case (EQN_TOK_ROMAN): + case EQN_TOK_ROMAN: parent->font = EQNFONT_ROMAN; break; - case (EQN_TOK_ITALIC): + case EQN_TOK_ITALIC: parent->font = EQNFONT_ITALIC; break; - case (EQN_TOK_BOLD): + case EQN_TOK_BOLD: parent->font = EQNFONT_BOLD; break; default: abort(); } break; - case (EQN_TOK_SIZE): - case (EQN_TOK_GSIZE): + case EQN_TOK_SIZE: + case EQN_TOK_GSIZE: /* Accept two values: integral size and a single. */ - if (NULL == (start = eqn_nexttok(ep, &sz))) { + if (eqn_next(ep, MODE_SUB) == EQN_TOK_EOF) { mandoc_msg(MANDOCERR_REQ_EMPTY, ep->parse, - ep->eqn.ln, ep->eqn.pos, eqn_toks[tok]); + ep->node->line, ep->node->pos, eqn_toks[tok]); break; } - size = mandoc_strntoi(start, sz, 10); + size = mandoc_strntoi(ep->start, ep->toksz, 10); if (-1 == size) { mandoc_msg(MANDOCERR_IT_NONUM, ep->parse, - ep->eqn.ln, ep->eqn.pos, eqn_toks[tok]); + ep->node->line, ep->node->pos, eqn_toks[tok]); break; } if (EQN_TOK_GSIZE == tok) { ep->gsize = size; break; } + while (parent->args == parent->expectargs) + parent = parent->parent; parent = eqn_box_alloc(ep, parent); - parent->type = EQN_LISTONE; + parent->type = EQN_LIST; parent->expectargs = 1; parent->size = size; break; - case (EQN_TOK_FROM): - case (EQN_TOK_TO): - case (EQN_TOK_SUB): - case (EQN_TOK_SUP): + case EQN_TOK_FROM: + case EQN_TOK_TO: + case EQN_TOK_SUB: + case EQN_TOK_SUP: /* * We have a left-right-associative expression. * Repivot under a positional node, open a child scope * and keep on reading. */ if (parent->last == NULL) { mandoc_msg(MANDOCERR_EQN_NOBOX, ep->parse, - ep->eqn.ln, ep->eqn.pos, eqn_toks[tok]); + ep->node->line, ep->node->pos, eqn_toks[tok]); cur = eqn_box_alloc(ep, parent); cur->type = EQN_TEXT; cur->text = mandoc_strdup(""); } - /* Handle the "subsup" and "fromto" positions. */ - if (EQN_TOK_SUP == tok && parent->pos == EQNPOS_SUB) { + while (parent->expectargs == 1 && parent->args == 1) + parent = parent->parent; + if (tok == EQN_TOK_FROM || tok == EQN_TOK_TO) { + for (cur = parent; cur != NULL; cur = cur->parent) + if (cur->pos == EQNPOS_SUB || + cur->pos == EQNPOS_SUP || + cur->pos == EQNPOS_SUBSUP || + cur->pos == EQNPOS_SQRT || + cur->pos == EQNPOS_OVER) + break; + if (cur != NULL) + parent = cur->parent; + } + if (tok == EQN_TOK_SUP && parent->pos == EQNPOS_SUB) { parent->expectargs = 3; parent->pos = EQNPOS_SUBSUP; break; } - if (EQN_TOK_TO == tok && parent->pos == EQNPOS_FROM) { + if (tok == EQN_TOK_TO && parent->pos == EQNPOS_FROM) { parent->expectargs = 3; parent->pos = EQNPOS_FROMTO; break; } + parent = eqn_box_makebinary(ep, parent); switch (tok) { - case (EQN_TOK_FROM): - pos = EQNPOS_FROM; + case EQN_TOK_FROM: + parent->pos = EQNPOS_FROM; break; - case (EQN_TOK_TO): - pos = EQNPOS_TO; + case EQN_TOK_TO: + parent->pos = EQNPOS_TO; break; - case (EQN_TOK_SUP): - pos = EQNPOS_SUP; + case EQN_TOK_SUP: + parent->pos = EQNPOS_SUP; break; - case (EQN_TOK_SUB): - pos = EQNPOS_SUB; + case EQN_TOK_SUB: + parent->pos = EQNPOS_SUB; break; default: abort(); } - parent = eqn_box_makebinary(ep, pos, parent); break; - case (EQN_TOK_SQRT): + case EQN_TOK_SQRT: while (parent->args == parent->expectargs) parent = parent->parent; /* * Accept a left-right-associative set of arguments just * like sub and sup and friends but without rebalancing * under a pivot. */ parent = eqn_box_alloc(ep, parent); parent->type = EQN_SUBEXPR; parent->pos = EQNPOS_SQRT; parent->expectargs = 1; break; - case (EQN_TOK_OVER): + case EQN_TOK_OVER: /* * We have a right-left-associative fraction. * Close out anything that's currently open, then * rebalance and continue reading. */ if (parent->last == NULL) { mandoc_msg(MANDOCERR_EQN_NOBOX, ep->parse, - ep->eqn.ln, ep->eqn.pos, eqn_toks[tok]); + ep->node->line, ep->node->pos, eqn_toks[tok]); cur = eqn_box_alloc(ep, parent); cur->type = EQN_TEXT; cur->text = mandoc_strdup(""); } + while (parent->args == parent->expectargs) + parent = parent->parent; while (EQN_SUBEXPR == parent->type) parent = parent->parent; - parent = eqn_box_makebinary(ep, EQNPOS_OVER, parent); + parent = eqn_box_makebinary(ep, parent); + parent->pos = EQNPOS_OVER; break; - case (EQN_TOK_RIGHT): - case (EQN_TOK_BRACE_CLOSE): + case EQN_TOK_RIGHT: + case EQN_TOK_BRACE_CLOSE: /* * Close out the existing brace. * FIXME: this is a shitty sentinel: we should really * have a native EQN_BRACE type or whatnot. */ for (cur = parent; cur != NULL; cur = cur->parent) if (cur->type == EQN_LIST && + cur->expectargs > 1 && (tok == EQN_TOK_BRACE_CLOSE || cur->left != NULL)) break; if (cur == NULL) { mandoc_msg(MANDOCERR_BLK_NOTOPEN, ep->parse, - ep->eqn.ln, ep->eqn.pos, eqn_toks[tok]); + ep->node->line, ep->node->pos, eqn_toks[tok]); break; } parent = cur; if (EQN_TOK_RIGHT == tok) { - if (NULL == (start = eqn_nexttok(ep, &sz))) { + if (eqn_next(ep, MODE_SUB) == EQN_TOK_EOF) { mandoc_msg(MANDOCERR_REQ_EMPTY, - ep->parse, ep->eqn.ln, - ep->eqn.pos, eqn_toks[tok]); + ep->parse, ep->node->line, + ep->node->pos, eqn_toks[tok]); break; } /* Handling depends on right/left. */ - if (STRNEQ(start, sz, "ceiling", 7)) { - strlcpy(sym, "\\[rc]", sizeof(sym)); - parent->right = mandoc_strdup(sym); - } else if (STRNEQ(start, sz, "floor", 5)) { - strlcpy(sym, "\\[rf]", sizeof(sym)); - parent->right = mandoc_strdup(sym); - } else - parent->right = mandoc_strndup(start, sz); + if (STRNEQ(ep->start, ep->toksz, "ceiling", 7)) + parent->right = mandoc_strdup("\\[rc]"); + else if (STRNEQ(ep->start, ep->toksz, "floor", 5)) + parent->right = mandoc_strdup("\\[rf]"); + else + parent->right = + mandoc_strndup(ep->start, ep->toksz); } parent = parent->parent; if (tok == EQN_TOK_BRACE_CLOSE && (parent->type == EQN_PILE || parent->type == EQN_MATRIX)) parent = parent->parent; /* Close out any "singleton" lists. */ - while (parent->type == EQN_LISTONE && - parent->args == parent->expectargs) + while (parent->type == EQN_LIST && + parent->expectargs == 1 && + parent->args == 1) parent = parent->parent; break; - case (EQN_TOK_BRACE_OPEN): - case (EQN_TOK_LEFT): + case EQN_TOK_BRACE_OPEN: + case EQN_TOK_LEFT: /* * If we already have something in the stack and we're * in an expression, then rewind til we're not any more * (just like with the text node). */ while (parent->args == parent->expectargs) parent = parent->parent; if (EQN_TOK_LEFT == tok && - (start = eqn_nexttok(ep, &sz)) == NULL) { + eqn_next(ep, MODE_SUB) == EQN_TOK_EOF) { mandoc_msg(MANDOCERR_REQ_EMPTY, ep->parse, - ep->eqn.ln, ep->eqn.pos, eqn_toks[tok]); + ep->node->line, ep->node->pos, eqn_toks[tok]); break; } parent = eqn_box_alloc(ep, parent); parent->type = EQN_LIST; if (EQN_TOK_LEFT == tok) { - if (STRNEQ(start, sz, "ceiling", 7)) { - strlcpy(sym, "\\[lc]", sizeof(sym)); - parent->left = mandoc_strdup(sym); - } else if (STRNEQ(start, sz, "floor", 5)) { - strlcpy(sym, "\\[lf]", sizeof(sym)); - parent->left = mandoc_strdup(sym); - } else - parent->left = mandoc_strndup(start, sz); + if (STRNEQ(ep->start, ep->toksz, "ceiling", 7)) + parent->left = mandoc_strdup("\\[lc]"); + else if (STRNEQ(ep->start, ep->toksz, "floor", 5)) + parent->left = mandoc_strdup("\\[lf]"); + else + parent->left = + mandoc_strndup(ep->start, ep->toksz); } break; - case (EQN_TOK_PILE): - case (EQN_TOK_LPILE): - case (EQN_TOK_RPILE): - case (EQN_TOK_CPILE): - case (EQN_TOK_CCOL): - case (EQN_TOK_LCOL): - case (EQN_TOK_RCOL): + case EQN_TOK_PILE: + case EQN_TOK_LPILE: + case EQN_TOK_RPILE: + case EQN_TOK_CPILE: + case EQN_TOK_CCOL: + case EQN_TOK_LCOL: + case EQN_TOK_RCOL: while (parent->args == parent->expectargs) parent = parent->parent; parent = eqn_box_alloc(ep, parent); parent->type = EQN_PILE; parent->expectargs = 1; break; - case (EQN_TOK_ABOVE): + case EQN_TOK_ABOVE: for (cur = parent; cur != NULL; cur = cur->parent) if (cur->type == EQN_PILE) break; if (cur == NULL) { mandoc_msg(MANDOCERR_IT_STRAY, ep->parse, - ep->eqn.ln, ep->eqn.pos, eqn_toks[tok]); + ep->node->line, ep->node->pos, eqn_toks[tok]); break; } parent = eqn_box_alloc(ep, cur); parent->type = EQN_LIST; break; - case (EQN_TOK_MATRIX): + case EQN_TOK_MATRIX: while (parent->args == parent->expectargs) parent = parent->parent; parent = eqn_box_alloc(ep, parent); parent->type = EQN_MATRIX; parent->expectargs = 1; break; - case (EQN_TOK_EOF): + case EQN_TOK_EOF: + return; + case EQN_TOK__MAX: + case EQN_TOK_FUNC: + case EQN_TOK_QUOTED: + case EQN_TOK_SYM: + p = ep->start; + assert(p != NULL); /* - * End of file! - * TODO: make sure we're not in an open subexpression. - */ - return ROFF_EQN; - default: - assert(tok == EQN_TOK__MAX); - assert(NULL != p); - /* * If we already have something in the stack and we're * in an expression, then rewind til we're not any more. */ while (parent->args == parent->expectargs) parent = parent->parent; cur = eqn_box_alloc(ep, parent); cur->type = EQN_TEXT; - for (i = 0; i < EQNSYM__MAX; i++) - if (0 == strcmp(eqnsyms[i].str, p)) { - (void)snprintf(sym, sizeof(sym), - "\\[%s]", eqnsyms[i].sym); - cur->text = mandoc_strdup(sym); - free(p); + cur->text = p; + switch (tok) { + case EQN_TOK_FUNC: + cur->font = EQNFONT_ROMAN; + break; + case EQN_TOK_QUOTED: + if (cur->font == EQNFONT_NONE) + cur->font = EQNFONT_ITALIC; + break; + case EQN_TOK_SYM: + break; + default: + if (cur->font != EQNFONT_NONE || *p == '\0') break; + cpn = p - 1; + ccln = CCL_LET; + split = NULL; + for (;;) { + /* Advance to next character. */ + cp = cpn++; + ccl = ccln; + ccln = isalpha((unsigned char)*cpn) ? CCL_LET : + isdigit((unsigned char)*cpn) || + (*cpn == '.' && (ccl == CCL_DIG || + isdigit((unsigned char)cpn[1]))) ? + CCL_DIG : CCL_PUN; + /* No boundary before first character. */ + if (cp < p) + continue; + cur->font = ccl == CCL_LET ? + EQNFONT_ITALIC : EQNFONT_ROMAN; + if (*cp == '\\') + mandoc_escape(&cpn, NULL, NULL); + /* No boundary after last character. */ + if (*cpn == '\0') + break; + if (ccln == ccl && *cp != ',' && *cpn != ',') + continue; + /* Boundary found, split the text. */ + if (parent->args == parent->expectargs) { + /* Remove the text from the tree. */ + if (cur->prev == NULL) + parent->first = cur->next; + else + cur->prev->next = NULL; + parent->last = cur->prev; + parent->args--; + /* Set up a list instead. */ + split = eqn_box_alloc(ep, parent); + split->type = EQN_LIST; + /* Insert the word into the list. */ + split->first = split->last = cur; + cur->parent = split; + cur->prev = NULL; + parent = split; + } + /* Append a new text box. */ + nbox = eqn_box_alloc(ep, parent); + nbox->type = EQN_TEXT; + nbox->text = mandoc_strdup(cpn); + /* Truncate the old box. */ + p = mandoc_strndup(cur->text, + cpn - cur->text); + free(cur->text); + cur->text = p; + /* Setup to process the new box. */ + cur = nbox; + p = nbox->text; + cpn = p - 1; + ccln = CCL_LET; } - - if (i == EQNSYM__MAX) - cur->text = p; - /* - * Post-process list status. - */ - while (parent->type == EQN_LISTONE && - parent->args == parent->expectargs) - parent = parent->parent; + if (split != NULL) + parent = split->parent; + break; + } break; + default: + abort(); } goto next_tok; } -enum rofferr -eqn_end(struct eqn_node **epp) -{ - struct eqn_node *ep; - - ep = *epp; - *epp = NULL; - - ep->eqn.root = mandoc_calloc(1, sizeof(struct eqn_box)); - ep->eqn.root->expectargs = UINT_MAX; - return eqn_parse(ep, ep->eqn.root); -} - void eqn_free(struct eqn_node *p) { int i; - - eqn_box_free(p->eqn.root); for (i = 0; i < (int)p->defsz; i++) { free(p->defs[i].key); free(p->defs[i].val); } free(p->data); free(p->defs); free(p); } Index: vendor/mdocml/dist/eqn_html.c =================================================================== --- vendor/mdocml/dist/eqn_html.c (revision 321806) +++ vendor/mdocml/dist/eqn_html.c (revision 321807) @@ -1,186 +1,244 @@ -/* $Id: eqn_html.c,v 1.11 2017/01/17 01:47:51 schwarze Exp $ */ +/* $Id: eqn_html.c,v 1.17 2017/07/14 13:32:35 schwarze Exp $ */ /* * Copyright (c) 2011, 2014 Kristaps Dzonsons * Copyright (c) 2017 Ingo Schwarze * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "config.h" #include #include +#include #include #include #include #include "mandoc.h" #include "out.h" #include "html.h" static void eqn_box(struct html *p, const struct eqn_box *bp) { struct tag *post, *row, *cell, *t; const struct eqn_box *child, *parent; + const char *cp; size_t i, j, rows; + enum htmltag tag; + enum eqn_fontt font; if (NULL == bp) return; post = NULL; /* * Special handling for a matrix, which is presented to us in * column order, but must be printed in row-order. */ if (EQN_MATRIX == bp->type) { if (NULL == bp->first) goto out; - if (EQN_LIST != bp->first->type) { + if (bp->first->type != EQN_LIST || + bp->first->expectargs == 1) { eqn_box(p, bp->first); goto out; } if (NULL == (parent = bp->first->first)) goto out; /* Estimate the number of rows, first. */ if (NULL == (child = parent->first)) goto out; for (rows = 0; NULL != child; rows++) child = child->next; /* Print row-by-row. */ post = print_otag(p, TAG_MTABLE, ""); for (i = 0; i < rows; i++) { parent = bp->first->first; row = print_otag(p, TAG_MTR, ""); while (NULL != parent) { child = parent->first; for (j = 0; j < i; j++) { if (NULL == child) break; child = child->next; } cell = print_otag(p, TAG_MTD, ""); /* * If we have no data for this * particular cell, then print a * placeholder and continue--don't puke. */ if (NULL != child) eqn_box(p, child->first); print_tagq(p, cell); parent = parent->next; } print_tagq(p, row); } goto out; } switch (bp->pos) { - case (EQNPOS_TO): + case EQNPOS_TO: post = print_otag(p, TAG_MOVER, ""); break; - case (EQNPOS_SUP): + case EQNPOS_SUP: post = print_otag(p, TAG_MSUP, ""); break; - case (EQNPOS_FROM): + case EQNPOS_FROM: post = print_otag(p, TAG_MUNDER, ""); break; - case (EQNPOS_SUB): + case EQNPOS_SUB: post = print_otag(p, TAG_MSUB, ""); break; - case (EQNPOS_OVER): + case EQNPOS_OVER: post = print_otag(p, TAG_MFRAC, ""); break; - case (EQNPOS_FROMTO): + case EQNPOS_FROMTO: post = print_otag(p, TAG_MUNDEROVER, ""); break; - case (EQNPOS_SUBSUP): + case EQNPOS_SUBSUP: post = print_otag(p, TAG_MSUBSUP, ""); break; - case (EQNPOS_SQRT): + case EQNPOS_SQRT: post = print_otag(p, TAG_MSQRT, ""); break; default: break; } if (bp->top || bp->bottom) { assert(NULL == post); if (bp->top && NULL == bp->bottom) post = print_otag(p, TAG_MOVER, ""); else if (bp->top && bp->bottom) post = print_otag(p, TAG_MUNDEROVER, ""); else if (bp->bottom) post = print_otag(p, TAG_MUNDER, ""); } if (EQN_PILE == bp->type) { assert(NULL == post); - if (bp->first != NULL && bp->first->type == EQN_LIST) + if (bp->first != NULL && + bp->first->type == EQN_LIST && + bp->first->expectargs > 1) post = print_otag(p, TAG_MTABLE, ""); - } else if (bp->type == EQN_LIST && + } else if (bp->type == EQN_LIST && bp->expectargs > 1 && bp->parent && bp->parent->type == EQN_PILE) { assert(NULL == post); post = print_otag(p, TAG_MTR, ""); print_otag(p, TAG_MTD, ""); } - if (NULL != bp->text) { - assert(NULL == post); - post = print_otag(p, TAG_MI, ""); + if (bp->text != NULL) { + assert(post == NULL); + tag = TAG_MI; + cp = bp->text; + if (isdigit((unsigned char)cp[0]) || + (cp[0] == '.' && isdigit((unsigned char)cp[1]))) { + tag = TAG_MN; + while (*++cp != '\0') { + if (*cp != '.' && + isdigit((unsigned char)*cp) == 0) { + tag = TAG_MI; + break; + } + } + } else if (*cp != '\0' && isalpha((unsigned char)*cp) == 0) { + tag = TAG_MO; + while (*cp != '\0') { + if (cp[0] == '\\' && cp[1] != '\0') { + cp++; + mandoc_escape(&cp, NULL, NULL); + } else if (isalnum((unsigned char)*cp)) { + tag = TAG_MI; + break; + } else + cp++; + } + } + font = bp->font; + if (bp->text[0] != '\0' && + (((tag == TAG_MN || tag == TAG_MO) && + font == EQNFONT_ROMAN) || + (tag == TAG_MI && font == (bp->text[1] == '\0' ? + EQNFONT_ITALIC : EQNFONT_ROMAN)))) + font = EQNFONT_NONE; + switch (font) { + case EQNFONT_NONE: + post = print_otag(p, tag, ""); + break; + case EQNFONT_ROMAN: + post = print_otag(p, tag, "?", "fontstyle", "normal"); + break; + case EQNFONT_BOLD: + case EQNFONT_FAT: + post = print_otag(p, tag, "?", "fontweight", "bold"); + break; + case EQNFONT_ITALIC: + post = print_otag(p, tag, "?", "fontstyle", "italic"); + break; + default: + abort(); + } print_text(p, bp->text); } else if (NULL == post) { if (NULL != bp->left || NULL != bp->right) post = print_otag(p, TAG_MFENCED, "??", "open", bp->left == NULL ? "" : bp->left, "close", bp->right == NULL ? "" : bp->right); if (NULL == post) post = print_otag(p, TAG_MROW, ""); else print_otag(p, TAG_MROW, ""); } eqn_box(p, bp->first); out: if (NULL != bp->bottom) { t = print_otag(p, TAG_MO, ""); print_text(p, bp->bottom); print_tagq(p, t); } if (NULL != bp->top) { t = print_otag(p, TAG_MO, ""); print_text(p, bp->top); print_tagq(p, t); } if (NULL != post) print_tagq(p, post); eqn_box(p, bp->next); } void -print_eqn(struct html *p, const struct eqn *ep) +print_eqn(struct html *p, const struct eqn_box *bp) { struct tag *t; + if (bp->first == NULL) + return; + t = print_otag(p, TAG_MATH, "c", "eqn"); p->flags |= HTML_NONOSPACE; - eqn_box(p, ep->root); + eqn_box(p, bp); p->flags &= ~HTML_NONOSPACE; print_tagq(p, t); } Index: vendor/mdocml/dist/eqn_term.c =================================================================== --- vendor/mdocml/dist/eqn_term.c (revision 321806) +++ vendor/mdocml/dist/eqn_term.c (revision 321807) @@ -1,130 +1,154 @@ -/* $Id: eqn_term.c,v 1.9 2017/02/12 14:19:01 schwarze Exp $ */ +/* $Id: eqn_term.c,v 1.13 2017/07/08 14:51:04 schwarze Exp $ */ /* * Copyright (c) 2011 Kristaps Dzonsons * Copyright (c) 2014, 2015, 2017 Ingo Schwarze * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "config.h" #include #include #include #include #include #include "mandoc.h" #include "out.h" #include "term.h" static const enum termfont fontmap[EQNFONT__MAX] = { TERMFONT_NONE, /* EQNFONT_NONE */ TERMFONT_NONE, /* EQNFONT_ROMAN */ TERMFONT_BOLD, /* EQNFONT_BOLD */ TERMFONT_BOLD, /* EQNFONT_FAT */ TERMFONT_UNDER /* EQNFONT_ITALIC */ }; static void eqn_box(struct termp *, const struct eqn_box *); void -term_eqn(struct termp *p, const struct eqn *ep) +term_eqn(struct termp *p, const struct eqn_box *bp) { - eqn_box(p, ep->root); + eqn_box(p, bp); p->flags &= ~TERMP_NOSPACE; } static void eqn_box(struct termp *p, const struct eqn_box *bp) { const struct eqn_box *child; + int delim; - if (bp->type == EQN_LIST || + /* Delimiters around this box? */ + + if ((bp->type == EQN_LIST && bp->expectargs > 1) || (bp->type == EQN_PILE && (bp->prev || bp->next)) || - (bp->parent != NULL && bp->parent->pos == EQNPOS_SQRT)) { + (bp->parent != NULL && (bp->parent->pos == EQNPOS_SQRT || + /* Diacritic followed by ^ or _. */ + ((bp->top != NULL || bp->bottom != NULL) && + bp->parent->type == EQN_SUBEXPR && + bp->parent->pos != EQNPOS_OVER && bp->next != NULL) || + /* Nested over, sub, sup, from, to. */ + (bp->type == EQN_SUBEXPR && bp->pos != EQNPOS_SQRT && + ((bp->parent->type == EQN_LIST && bp->expectargs == 1) || + (bp->parent->type == EQN_SUBEXPR && + bp->pos != EQNPOS_SQRT)))))) { if (bp->parent->type == EQN_SUBEXPR && bp->prev != NULL) p->flags |= TERMP_NOSPACE; term_word(p, bp->left != NULL ? bp->left : "("); p->flags |= TERMP_NOSPACE; - } + delim = 1; + } else + delim = 0; + + /* Handle Fonts and text. */ + if (bp->font != EQNFONT_NONE) term_fontpush(p, fontmap[(int)bp->font]); if (bp->text != NULL) term_word(p, bp->text); + /* Special box types. */ + if (bp->pos == EQNPOS_SQRT) { term_word(p, "sqrt"); if (bp->first != NULL) { p->flags |= TERMP_NOSPACE; eqn_box(p, bp->first); } } else if (bp->type == EQN_SUBEXPR) { child = bp->first; eqn_box(p, child); p->flags |= TERMP_NOSPACE; term_word(p, bp->pos == EQNPOS_OVER ? "/" : (bp->pos == EQNPOS_SUP || bp->pos == EQNPOS_TO) ? "^" : "_"); p->flags |= TERMP_NOSPACE; child = child->next; if (child != NULL) { eqn_box(p, child); if (bp->pos == EQNPOS_FROMTO || bp->pos == EQNPOS_SUBSUP) { p->flags |= TERMP_NOSPACE; term_word(p, "^"); p->flags |= TERMP_NOSPACE; child = child->next; if (child != NULL) eqn_box(p, child); } } } else { child = bp->first; if (bp->type == EQN_MATRIX && - child != NULL && child->type == EQN_LIST) + child != NULL && + child->type == EQN_LIST && + child->expectargs > 1) child = child->first; while (child != NULL) { eqn_box(p, bp->type == EQN_PILE && child->type == EQN_LIST && + child->expectargs > 1 && child->args == 1 ? child->first : child); child = child->next; } } + /* Handle Fonts and diacritics. */ + if (bp->font != EQNFONT_NONE) term_fontpop(p); - if (bp->type == EQN_LIST || - (bp->type == EQN_PILE && (bp->prev || bp->next)) || - (bp->parent != NULL && bp->parent->pos == EQNPOS_SQRT)) { - p->flags |= TERMP_NOSPACE; - term_word(p, bp->right != NULL ? bp->right : ")"); - if (bp->parent->type == EQN_SUBEXPR && bp->next != NULL) - p->flags |= TERMP_NOSPACE; - } - if (bp->top != NULL) { p->flags |= TERMP_NOSPACE; term_word(p, bp->top); } if (bp->bottom != NULL) { p->flags |= TERMP_NOSPACE; term_word(p, "_"); + } + + /* Right delimiter after this box? */ + + if (delim) { + p->flags |= TERMP_NOSPACE; + term_word(p, bp->right != NULL ? bp->right : ")"); + if (bp->parent->type == EQN_SUBEXPR && bp->next != NULL) + p->flags |= TERMP_NOSPACE; } } Index: vendor/mdocml/dist/gmdiff =================================================================== --- vendor/mdocml/dist/gmdiff (revision 321806) +++ vendor/mdocml/dist/gmdiff (revision 321807) @@ -1,54 +1,54 @@ #!/bin/sh # Copyright (c) 2013, 2014 Ingo Schwarze # # Permission to use, copy, modify, and distribute this software for any # purpose with or without fee is hereby granted, provided that the above # copyright notice and this permission notice appear in all copies. # # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. if [ `id -u` -eq 0 ]; then echo "$0: do not run me as root" exit 1 fi if [ $# -eq 0 ]; then echo "usage: $0 [-h] manual_source_file ..." exit 1 fi if [ "X$1" = "X-h" ]; then shift export PATH="/usr/local/heirloom-doctools/bin:$PATH" EQN="neqn" ROFF="nroff" MOPT="-Omdoc $MOPT" elif [ "X$1" = "X-u" ]; then shift ROFF="groff -ket -ww -Tutf8 -P -c" MOPT="-Werror -Tutf8 $MOPT" else ROFF="groff -et -ww -Tascii -P -c" MOPT="-Werror -Tascii $MOPT" fi while [ -n "$1" ]; do file=$1 shift echo " ========== $file ========== " $ROFF -mandoc $file 2> /tmp/roff.err > /tmp/roff.out - ${MANDOC:=mandoc} -Ios='OpenBSD ports' $MOPT $file \ + ${MANDOC:=mandoc} -Ios=OpenBSD $MOPT $file \ 2> /tmp/mandoc.err > /tmp/mandoc.out for i in roff mandoc; do [ -s /tmp/$i.err ] && echo "$i errors:" && cat /tmp/$i.err done diff -au /tmp/roff.out /tmp/mandoc.out 2>&1 done exit 0 Index: vendor/mdocml/dist/html.c =================================================================== --- vendor/mdocml/dist/html.c (revision 321806) +++ vendor/mdocml/dist/html.c (revision 321807) @@ -1,961 +1,979 @@ -/* $Id: html.c,v 1.213 2017/06/08 12:54:58 schwarze Exp $ */ +/* $Id: html.c,v 1.219 2017/07/15 17:57:51 schwarze Exp $ */ /* * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons * Copyright (c) 2011-2015, 2017 Ingo Schwarze * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "config.h" #include #include #include #include #include #include #include #include #include #include "mandoc_aux.h" #include "mandoc.h" #include "roff.h" #include "out.h" #include "html.h" #include "manconf.h" #include "main.h" struct htmldata { const char *name; int flags; #define HTML_NOSTACK (1 << 0) #define HTML_AUTOCLOSE (1 << 1) #define HTML_NLBEFORE (1 << 2) #define HTML_NLBEGIN (1 << 3) #define HTML_NLEND (1 << 4) #define HTML_NLAFTER (1 << 5) #define HTML_NLAROUND (HTML_NLBEFORE | HTML_NLAFTER) #define HTML_NLINSIDE (HTML_NLBEGIN | HTML_NLEND) #define HTML_NLALL (HTML_NLAROUND | HTML_NLINSIDE) #define HTML_INDENT (1 << 6) #define HTML_NOINDENT (1 << 7) }; static const struct htmldata htmltags[TAG_MAX] = { {"html", HTML_NLALL}, {"head", HTML_NLALL | HTML_INDENT}, {"body", HTML_NLALL}, {"meta", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL}, {"title", HTML_NLAROUND}, {"div", HTML_NLAROUND}, {"h1", HTML_NLAROUND}, {"h2", HTML_NLAROUND}, {"span", 0}, {"link", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL}, {"br", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL}, {"a", 0}, {"table", HTML_NLALL | HTML_INDENT}, {"colgroup", HTML_NLALL | HTML_INDENT}, {"col", HTML_NOSTACK | HTML_AUTOCLOSE | HTML_NLALL}, {"tr", HTML_NLALL | HTML_INDENT}, {"td", HTML_NLAROUND}, {"li", HTML_NLAROUND | HTML_INDENT}, {"ul", HTML_NLALL | HTML_INDENT}, {"ol", HTML_NLALL | HTML_INDENT}, {"dl", HTML_NLALL | HTML_INDENT}, {"dt", HTML_NLAROUND}, {"dd", HTML_NLAROUND | HTML_INDENT}, {"pre", HTML_NLALL | HTML_NOINDENT}, {"var", 0}, {"cite", 0}, {"b", 0}, {"i", 0}, {"code", 0}, {"small", 0}, {"style", HTML_NLALL | HTML_INDENT}, {"math", HTML_NLALL | HTML_INDENT}, {"mrow", 0}, {"mi", 0}, + {"mn", 0}, {"mo", 0}, {"msup", 0}, {"msub", 0}, {"msubsup", 0}, {"mfrac", 0}, {"msqrt", 0}, {"mfenced", 0}, {"mtable", 0}, {"mtr", 0}, {"mtd", 0}, {"munderover", 0}, {"munder", 0}, {"mover", 0}, }; static const char *const roffscales[SCALE_MAX] = { "cm", /* SCALE_CM */ "in", /* SCALE_IN */ "pc", /* SCALE_PC */ "pt", /* SCALE_PT */ "em", /* SCALE_EM */ "em", /* SCALE_MM */ "ex", /* SCALE_EN */ "ex", /* SCALE_BU */ "em", /* SCALE_VS */ "ex", /* SCALE_FS */ }; static void a2width(const char *, struct roffsu *); static void print_byte(struct html *, char); static void print_endword(struct html *); static void print_indent(struct html *); static void print_word(struct html *, const char *); static void print_ctag(struct html *, struct tag *); static int print_escape(struct html *, char); static int print_encode(struct html *, const char *, const char *, int); static void print_href(struct html *, const char *, const char *, int); static void print_metaf(struct html *, enum mandoc_esc); void * html_alloc(const struct manoutput *outopts) { struct html *h; h = mandoc_calloc(1, sizeof(struct html)); h->tag = NULL; h->style = outopts->style; h->base_man = outopts->man; h->base_includes = outopts->includes; if (outopts->fragment) h->oflags |= HTML_FRAGMENT; return h; } void html_free(void *p) { struct tag *tag; struct html *h; h = (struct html *)p; while ((tag = h->tag) != NULL) { h->tag = tag->next; free(tag); } free(h); } void print_gen_head(struct html *h) { struct tag *t; print_otag(h, TAG_META, "?", "charset", "utf-8"); /* * Print a default style-sheet. */ t = print_otag(h, TAG_STYLE, ""); print_text(h, "table.head, table.foot { width: 100%; }"); print_endline(h); print_text(h, "td.head-rtitle, td.foot-os { text-align: right; }"); print_endline(h); print_text(h, "td.head-vol { text-align: center; }"); print_endline(h); print_text(h, "div.Pp { margin: 1ex 0ex; }"); print_tagq(h, t); if (h->style) print_otag(h, TAG_LINK, "?h??", "rel", "stylesheet", h->style, "type", "text/css", "media", "all"); } static void print_metaf(struct html *h, enum mandoc_esc deco) { enum htmlfont font; switch (deco) { case ESCAPE_FONTPREV: font = h->metal; break; case ESCAPE_FONTITALIC: font = HTMLFONT_ITALIC; break; case ESCAPE_FONTBOLD: font = HTMLFONT_BOLD; break; case ESCAPE_FONTBI: font = HTMLFONT_BI; break; case ESCAPE_FONT: case ESCAPE_FONTROMAN: font = HTMLFONT_NONE; break; default: abort(); } if (h->metaf) { print_tagq(h, h->metaf); h->metaf = NULL; } h->metal = h->metac; h->metac = font; switch (font) { case HTMLFONT_ITALIC: h->metaf = print_otag(h, TAG_I, ""); break; case HTMLFONT_BOLD: h->metaf = print_otag(h, TAG_B, ""); break; case HTMLFONT_BI: h->metaf = print_otag(h, TAG_B, ""); print_otag(h, TAG_I, ""); break; default: break; } } char * html_make_id(const struct roff_node *n) { const struct roff_node *nch; char *buf, *cp; for (nch = n->child; nch != NULL; nch = nch->next) if (nch->type != ROFFT_TEXT) return NULL; buf = NULL; deroff(&buf, n); /* http://www.w3.org/TR/html5/dom.html#the-id-attribute */ for (cp = buf; *cp != '\0'; cp++) if (*cp == ' ') *cp = '_'; return buf; } int html_strlen(const char *cp) { size_t rsz; int skip, sz; /* * Account for escaped sequences within string length * calculations. This follows the logic in term_strlen() as we * must calculate the width of produced strings. * Assume that characters are always width of "1". This is * hacky, but it gets the job done for approximation of widths. */ sz = 0; skip = 0; while (1) { rsz = strcspn(cp, "\\"); if (rsz) { cp += rsz; if (skip) { skip = 0; rsz--; } sz += rsz; } if ('\0' == *cp) break; cp++; switch (mandoc_escape(&cp, NULL, NULL)) { case ESCAPE_ERROR: return sz; case ESCAPE_UNICODE: case ESCAPE_NUMBERED: case ESCAPE_SPECIAL: case ESCAPE_OVERSTRIKE: if (skip) skip = 0; else sz++; break; case ESCAPE_SKIPCHAR: skip = 1; break; default: break; } } return sz; } static int print_escape(struct html *h, char c) { switch (c) { case '<': print_word(h, "<"); break; case '>': print_word(h, ">"); break; case '&': print_word(h, "&"); break; case '"': print_word(h, """); break; case ASCII_NBRSP: print_word(h, " "); break; case ASCII_HYPH: print_byte(h, '-'); break; case ASCII_BREAK: break; default: return 0; } return 1; } static int print_encode(struct html *h, const char *p, const char *pend, int norecurse) { char numbuf[16]; - size_t sz; - int c, len, nospace; + struct tag *t; const char *seq; + size_t sz; + int c, len, breakline, nospace; enum mandoc_esc esc; - static const char rejs[9] = { '\\', '<', '>', '&', '"', + static const char rejs[10] = { ' ', '\\', '<', '>', '&', '"', ASCII_NBRSP, ASCII_HYPH, ASCII_BREAK, '\0' }; if (pend == NULL) pend = strchr(p, '\0'); + breakline = 0; nospace = 0; while (p < pend) { if (HTML_SKIPCHAR & h->flags && '\\' != *p) { h->flags &= ~HTML_SKIPCHAR; p++; continue; } for (sz = strcspn(p, rejs); sz-- && p < pend; p++) - if (*p == ' ') - print_endword(h); - else - print_byte(h, *p); + print_byte(h, *p); + if (breakline && + (p >= pend || *p == ' ' || *p == ASCII_NBRSP)) { + t = print_otag(h, TAG_DIV, ""); + print_text(h, "\\~"); + print_tagq(h, t); + breakline = 0; + while (p < pend && (*p == ' ' || *p == ASCII_NBRSP)) + p++; + continue; + } + if (p >= pend) break; + if (*p == ' ') { + print_endword(h); + p++; + continue; + } + if (print_escape(h, *p++)) continue; esc = mandoc_escape(&p, &seq, &len); if (ESCAPE_ERROR == esc) break; switch (esc) { case ESCAPE_FONT: case ESCAPE_FONTPREV: case ESCAPE_FONTBOLD: case ESCAPE_FONTITALIC: case ESCAPE_FONTBI: case ESCAPE_FONTROMAN: if (0 == norecurse) print_metaf(h, esc); continue; case ESCAPE_SKIPCHAR: h->flags |= HTML_SKIPCHAR; continue; default: break; } if (h->flags & HTML_SKIPCHAR) { h->flags &= ~HTML_SKIPCHAR; continue; } switch (esc) { case ESCAPE_UNICODE: /* Skip past "u" header. */ c = mchars_num2uc(seq + 1, len - 1); break; case ESCAPE_NUMBERED: c = mchars_num2char(seq, len); if (c < 0) continue; break; case ESCAPE_SPECIAL: c = mchars_spec2cp(seq, len); if (c <= 0) continue; break; + case ESCAPE_BREAK: + breakline = 1; + continue; case ESCAPE_NOSPACE: if ('\0' == *p) nospace = 1; continue; case ESCAPE_OVERSTRIKE: if (len == 0) continue; c = seq[len - 1]; break; default: continue; } if ((c < 0x20 && c != 0x09) || (c > 0x7E && c < 0xA0)) c = 0xFFFD; if (c > 0x7E) { - (void)snprintf(numbuf, sizeof(numbuf), "&#%d;", c); + (void)snprintf(numbuf, sizeof(numbuf), "&#x%.4X;", c); print_word(h, numbuf); } else if (print_escape(h, c) == 0) print_byte(h, c); } return nospace; } static void print_href(struct html *h, const char *name, const char *sec, int man) { const char *p, *pp; pp = man ? h->base_man : h->base_includes; while ((p = strchr(pp, '%')) != NULL) { print_encode(h, pp, p, 1); if (man && p[1] == 'S') { if (sec == NULL) print_byte(h, '1'); else print_encode(h, sec, NULL, 1); } else if ((man && p[1] == 'N') || (man == 0 && p[1] == 'I')) print_encode(h, name, NULL, 1); else print_encode(h, p, p + 2, 1); pp = p + 2; } if (*pp != '\0') print_encode(h, pp, NULL, 1); } struct tag * print_otag(struct html *h, enum htmltag tag, const char *fmt, ...) { va_list ap; struct roffsu mysu, *su; char numbuf[16]; struct tag *t; const char *attr; char *arg1, *arg2; double v; int i, have_style, tflags; tflags = htmltags[tag].flags; /* Push this tag onto the stack of open scopes. */ if ((tflags & HTML_NOSTACK) == 0) { t = mandoc_malloc(sizeof(struct tag)); t->tag = tag; t->next = h->tag; h->tag = t; } else t = NULL; if (tflags & HTML_NLBEFORE) print_endline(h); if (h->col == 0) print_indent(h); else if ((h->flags & HTML_NOSPACE) == 0) { if (h->flags & HTML_KEEP) - print_word(h, " "); + print_word(h, " "); else { if (h->flags & HTML_PREKEEP) h->flags |= HTML_KEEP; print_endword(h); } } if ( ! (h->flags & HTML_NONOSPACE)) h->flags &= ~HTML_NOSPACE; else h->flags |= HTML_NOSPACE; /* Print out the tag name and attributes. */ print_byte(h, '<'); print_word(h, htmltags[tag].name); va_start(ap, fmt); have_style = 0; while (*fmt != '\0') { if (*fmt == 's') { have_style = 1; fmt++; break; } /* Parse a non-style attribute and its arguments. */ arg1 = va_arg(ap, char *); switch (*fmt++) { case 'c': attr = "class"; break; case 'h': attr = "href"; break; case 'i': attr = "id"; break; case '?': attr = arg1; arg1 = va_arg(ap, char *); break; default: abort(); } arg2 = NULL; if (*fmt == 'M') arg2 = va_arg(ap, char *); if (arg1 == NULL) continue; /* Print the non-style attributes. */ print_byte(h, ' '); print_word(h, attr); print_byte(h, '='); print_byte(h, '"'); switch (*fmt) { case 'I': print_href(h, arg1, NULL, 0); fmt++; break; case 'M': print_href(h, arg1, arg2, 1); fmt++; break; case 'R': print_byte(h, '#'); print_encode(h, arg1, NULL, 1); fmt++; break; case 'T': print_encode(h, arg1, NULL, 1); print_word(h, "\" title=\""); print_encode(h, arg1, NULL, 1); fmt++; break; default: print_encode(h, arg1, NULL, 1); break; } print_byte(h, '"'); } /* Print out styles. */ while (*fmt != '\0') { arg1 = NULL; su = NULL; /* First letter: input argument type. */ switch (*fmt++) { case 'h': i = va_arg(ap, int); su = &mysu; SCALE_HS_INIT(su, i); break; case 's': arg1 = va_arg(ap, char *); break; case 'u': su = va_arg(ap, struct roffsu *); break; - case 'v': - i = va_arg(ap, int); - su = &mysu; - SCALE_VS_INIT(su, i); - break; case 'w': - if ((arg2 = va_arg(ap, char *)) == NULL) - break; - su = &mysu; - a2width(arg2, su); + if ((arg2 = va_arg(ap, char *)) != NULL) { + su = &mysu; + a2width(arg2, su); + } + if (*fmt == '*') { + if (su != NULL && su->unit == SCALE_EN && + su->scale > 5.9 && su->scale < 6.1) + su = NULL; + fmt++; + } if (*fmt == '+') { - /* Increase to make even bold text fit. */ - su->scale *= 1.2; - /* Add padding. */ - su->scale += 3.0; + if (su != NULL) { + /* Make even bold text fit. */ + su->scale *= 1.2; + /* Add padding. */ + su->scale += 3.0; + } fmt++; } if (*fmt == '-') { - su->scale *= -1.0; + if (su != NULL) + su->scale *= -1.0; fmt++; } break; default: abort(); } /* Second letter: style name. */ switch (*fmt++) { - case 'b': - attr = "margin-bottom"; - break; case 'h': attr = "height"; break; case 'i': attr = "text-indent"; break; case 'l': attr = "margin-left"; break; - case 't': - attr = "margin-top"; - break; case 'w': attr = "width"; break; case 'W': attr = "min-width"; break; case '?': attr = arg1; arg1 = va_arg(ap, char *); break; default: abort(); } if (su == NULL && arg1 == NULL) continue; if (have_style == 1) print_word(h, " style=\""); else print_byte(h, ' '); print_word(h, attr); print_byte(h, ':'); print_byte(h, ' '); if (su != NULL) { v = su->scale; if (su->unit == SCALE_MM && (v /= 100.0) == 0.0) v = 1.0; else if (su->unit == SCALE_BU) v /= 24.0; (void)snprintf(numbuf, sizeof(numbuf), "%.2f", v); print_word(h, numbuf); print_word(h, roffscales[su->unit]); } else print_word(h, arg1); print_byte(h, ';'); have_style = 2; } if (have_style == 2) print_byte(h, '"'); va_end(ap); /* Accommodate for "well-formed" singleton escaping. */ if (HTML_AUTOCLOSE & htmltags[tag].flags) print_byte(h, '/'); print_byte(h, '>'); if (tflags & HTML_NLBEGIN) print_endline(h); else h->flags |= HTML_NOSPACE; if (tflags & HTML_INDENT) h->indent++; if (tflags & HTML_NOINDENT) h->noindent++; return t; } static void print_ctag(struct html *h, struct tag *tag) { int tflags; /* * Remember to close out and nullify the current * meta-font and table, if applicable. */ if (tag == h->metaf) h->metaf = NULL; if (tag == h->tblt) h->tblt = NULL; tflags = htmltags[tag->tag].flags; if (tflags & HTML_INDENT) h->indent--; if (tflags & HTML_NOINDENT) h->noindent--; if (tflags & HTML_NLEND) print_endline(h); print_indent(h); print_byte(h, '<'); print_byte(h, '/'); print_word(h, htmltags[tag->tag].name); print_byte(h, '>'); if (tflags & HTML_NLAFTER) print_endline(h); h->tag = tag->next; free(tag); } void print_gen_decls(struct html *h) { print_word(h, ""); print_endline(h); } void print_text(struct html *h, const char *word) { if (h->col && (h->flags & HTML_NOSPACE) == 0) { if ( ! (HTML_KEEP & h->flags)) { if (HTML_PREKEEP & h->flags) h->flags |= HTML_KEEP; print_endword(h); } else - print_word(h, " "); + print_word(h, " "); } assert(NULL == h->metaf); switch (h->metac) { case HTMLFONT_ITALIC: h->metaf = print_otag(h, TAG_I, ""); break; case HTMLFONT_BOLD: h->metaf = print_otag(h, TAG_B, ""); break; case HTMLFONT_BI: h->metaf = print_otag(h, TAG_B, ""); print_otag(h, TAG_I, ""); break; default: print_indent(h); break; } assert(word); if ( ! print_encode(h, word, NULL, 0)) { if ( ! (h->flags & HTML_NONOSPACE)) h->flags &= ~HTML_NOSPACE; h->flags &= ~HTML_NONEWLINE; } else h->flags |= HTML_NOSPACE | HTML_NONEWLINE; if (h->metaf) { print_tagq(h, h->metaf); h->metaf = NULL; } h->flags &= ~HTML_IGNDELIM; } void print_tagq(struct html *h, const struct tag *until) { struct tag *tag; while ((tag = h->tag) != NULL) { print_ctag(h, tag); if (until && tag == until) return; } } void print_stagq(struct html *h, const struct tag *suntil) { struct tag *tag; while ((tag = h->tag) != NULL) { if (suntil && tag == suntil) return; print_ctag(h, tag); } } void print_paragraph(struct html *h) { struct tag *t; t = print_otag(h, TAG_DIV, "c", "Pp"); print_tagq(h, t); } /*********************************************************************** * Low level output functions. * They implement line breaking using a short static buffer. ***********************************************************************/ /* * Buffer one HTML output byte. * If the buffer is full, flush and deactivate it and start a new line. * If the buffer is inactive, print directly. */ static void print_byte(struct html *h, char c) { if ((h->flags & HTML_BUFFER) == 0) { putchar(c); h->col++; return; } if (h->col + h->bufcol < sizeof(h->buf)) { h->buf[h->bufcol++] = c; return; } putchar('\n'); h->col = 0; print_indent(h); putchar(' '); putchar(' '); fwrite(h->buf, h->bufcol, 1, stdout); putchar(c); h->col = (h->indent + 1) * 2 + h->bufcol + 1; h->bufcol = 0; h->flags &= ~HTML_BUFFER; } /* * If something was printed on the current output line, end it. * Not to be called right after print_indent(). */ void print_endline(struct html *h) { if (h->col == 0) return; if (h->bufcol) { putchar(' '); fwrite(h->buf, h->bufcol, 1, stdout); h->bufcol = 0; } putchar('\n'); h->col = 0; h->flags |= HTML_NOSPACE; h->flags &= ~HTML_BUFFER; } /* * Flush the HTML output buffer. * If it is inactive, activate it. */ static void print_endword(struct html *h) { if (h->noindent) { print_byte(h, ' '); return; } if ((h->flags & HTML_BUFFER) == 0) { h->col++; h->flags |= HTML_BUFFER; } else if (h->bufcol) { putchar(' '); fwrite(h->buf, h->bufcol, 1, stdout); h->col += h->bufcol + 1; } h->bufcol = 0; } /* * If at the beginning of a new output line, * perform indentation and mark the line as containing output. * Make sure to really produce some output right afterwards, * but do not use print_otag() for producing it. */ static void print_indent(struct html *h) { size_t i; if (h->col) return; if (h->noindent == 0) { h->col = h->indent * 2; for (i = 0; i < h->col; i++) putchar(' '); } h->flags &= ~HTML_NOSPACE; } /* * Print or buffer some characters * depending on the current HTML output buffer state. */ static void print_word(struct html *h, const char *cp) { while (*cp != '\0') print_byte(h, *cp++); } /* * Calculate the scaling unit passed in a `-width' argument. This uses * either a native scaling unit (e.g., 1i, 2m) or the string length of * the value. */ static void a2width(const char *p, struct roffsu *su) { const char *end; end = a2roffsu(p, su, SCALE_MAX); if (end == NULL || *end != '\0') { su->unit = SCALE_EN; su->scale = html_strlen(p); } else if (su->scale < 0.0) su->scale = 0.0; } Index: vendor/mdocml/dist/html.h =================================================================== --- vendor/mdocml/dist/html.h (revision 321806) +++ vendor/mdocml/dist/html.h (revision 321807) @@ -1,134 +1,135 @@ -/* $Id: html.h,v 1.85 2017/05/04 22:16:09 schwarze Exp $ */ +/* $Id: html.h,v 1.87 2017/07/08 14:51:04 schwarze Exp $ */ /* * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons * Copyright (c) 2017 Ingo Schwarze * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ enum htmltag { TAG_HTML, TAG_HEAD, TAG_BODY, TAG_META, TAG_TITLE, TAG_DIV, TAG_H1, TAG_H2, TAG_SPAN, TAG_LINK, TAG_BR, TAG_A, TAG_TABLE, TAG_COLGROUP, TAG_COL, TAG_TR, TAG_TD, TAG_LI, TAG_UL, TAG_OL, TAG_DL, TAG_DT, TAG_DD, TAG_PRE, TAG_VAR, TAG_CITE, TAG_B, TAG_I, TAG_CODE, TAG_SMALL, TAG_STYLE, TAG_MATH, TAG_MROW, TAG_MI, + TAG_MN, TAG_MO, TAG_MSUP, TAG_MSUB, TAG_MSUBSUP, TAG_MFRAC, TAG_MSQRT, TAG_MFENCED, TAG_MTABLE, TAG_MTR, TAG_MTD, TAG_MUNDEROVER, TAG_MUNDER, TAG_MOVER, TAG_MAX }; enum htmlfont { HTMLFONT_NONE = 0, HTMLFONT_BOLD, HTMLFONT_ITALIC, HTMLFONT_BI, HTMLFONT_MAX }; struct tag { struct tag *next; enum htmltag tag; }; struct html { int flags; #define HTML_NOSPACE (1 << 0) /* suppress next space */ #define HTML_IGNDELIM (1 << 1) #define HTML_KEEP (1 << 2) #define HTML_PREKEEP (1 << 3) #define HTML_NONOSPACE (1 << 4) /* never add spaces */ #define HTML_LITERAL (1 << 5) /* literal (e.g.,
) context */
 #define	HTML_SKIPCHAR	 (1 << 6) /* skip the next character */
 #define	HTML_NOSPLIT	 (1 << 7) /* do not break line before .An */
 #define	HTML_SPLIT	 (1 << 8) /* break line before .An */
 #define	HTML_NONEWLINE	 (1 << 9) /* No line break in nofill mode. */
 #define	HTML_BUFFER	 (1 << 10) /* Collect a word to see if it fits. */
 	size_t		  indent; /* current output indentation level */
 	int		  noindent; /* indent disabled by 
 */
 	size_t		  col; /* current output byte position */
 	size_t		  bufcol; /* current buf byte position */
 	char		  buf[80]; /* output buffer */
 	struct tag	 *tag; /* last open tag */
 	struct rofftbl	  tbl; /* current table */
 	struct tag	 *tblt; /* current open table scope */
 	char		 *base_man; /* base for manpage href */
 	char		 *base_includes; /* base for include href */
 	char		 *style; /* style-sheet URI */
 	struct tag	 *metaf; /* current open font scope */
 	enum htmlfont	  metal; /* last used font */
 	enum htmlfont	  metac; /* current font mode */
 	int		  oflags; /* output options */
 #define	HTML_FRAGMENT	 (1 << 0) /* don't emit HTML/HEAD/BODY */
 };
 
 
 struct	roff_node;
 struct	tbl_span;
-struct	eqn;
+struct	eqn_box;
 
 void		  roff_html_pre(struct html *, const struct roff_node *);
 
 void		  print_gen_decls(struct html *);
 void		  print_gen_head(struct html *);
 struct tag	 *print_otag(struct html *, enum htmltag, const char *, ...);
 void		  print_tagq(struct html *, const struct tag *);
 void		  print_stagq(struct html *, const struct tag *);
 void		  print_text(struct html *, const char *);
 void		  print_tblclose(struct html *);
 void		  print_tbl(struct html *, const struct tbl_span *);
-void		  print_eqn(struct html *, const struct eqn *);
+void		  print_eqn(struct html *, const struct eqn_box *);
 void		  print_paragraph(struct html *);
 void		  print_endline(struct html *);
 
 char		 *html_make_id(const struct roff_node *);
 int		  html_strlen(const char *);
Index: vendor/mdocml/dist/lib.c
===================================================================
--- vendor/mdocml/dist/lib.c	(revision 321806)
+++ vendor/mdocml/dist/lib.c	(revision 321807)
@@ -1,37 +1,38 @@
-/*	$Id: lib.c,v 1.13 2015/10/06 18:32:19 schwarze Exp $ */
+/*	$Id: lib.c,v 1.14 2017/06/24 14:38:32 schwarze Exp $ */
 /*
  * Copyright (c) 2009 Kristaps Dzonsons 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 
+#include "mandoc.h"
 #include "roff.h"
 #include "mdoc.h"
 #include "libmdoc.h"
 
 #define LINE(x, y) \
 	if (0 == strcmp(p, x)) return(y);
 
 const char *
 mdoc_a2lib(const char *p)
 {
 
 #include "lib.in"
 
 	return NULL;
 }
Index: vendor/mdocml/dist/libmandoc.h
===================================================================
--- vendor/mdocml/dist/libmandoc.h	(revision 321806)
+++ vendor/mdocml/dist/libmandoc.h	(revision 321807)
@@ -1,80 +1,73 @@
-/*	$Id: libmandoc.h,v 1.67 2017/04/29 12:45:41 schwarze Exp $ */
+/*	$Id: libmandoc.h,v 1.70 2017/07/08 17:52:49 schwarze Exp $ */
 /*
  * Copyright (c) 2009, 2010, 2011, 2012 Kristaps Dzonsons 
- * Copyright (c) 2013, 2014, 2015 Ingo Schwarze 
+ * Copyright (c) 2013, 2014, 2015, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
 enum	rofferr {
 	ROFF_CONT, /* continue processing line */
 	ROFF_RERUN, /* re-run roff interpreter with offset */
 	ROFF_APPEND, /* re-run main parser, appending next line */
 	ROFF_REPARSE, /* re-run main parser on the result */
 	ROFF_SO, /* include another file */
 	ROFF_IGN, /* ignore current line */
-	ROFF_TBL, /* a table row was successfully parsed */
-	ROFF_EQN /* an equation was successfully parsed */
 };
 
 struct	buf {
 	char	*buf;
 	size_t	 sz;
 };
 
 
 struct	mparse;
-struct	tbl_span;
-struct	eqn;
 struct	roff;
 struct	roff_man;
 
 void		 mandoc_msg(enum mandocerr, struct mparse *,
 			int, int, const char *);
 void		 mandoc_vmsg(enum mandocerr, struct mparse *,
 			int, int, const char *, ...)
 			__attribute__((__format__ (__printf__, 5, 6)));
 char		*mandoc_getarg(struct mparse *, char **, int, int *);
-char		*mandoc_normdate(struct mparse *, char *, int, int);
+char		*mandoc_normdate(struct roff_man *, char *, int, int);
 int		 mandoc_eos(const char *, size_t);
 int		 mandoc_strntoi(const char *, size_t, int);
 const char	*mandoc_a2msec(const char*);
 
 int		 mdoc_parseln(struct roff_man *, int, char *, int);
 void		 mdoc_endparse(struct roff_man *);
 
 int		 man_parseln(struct roff_man *, int, char *, int);
 void		 man_endparse(struct roff_man *);
 
 int		 preconv_cue(const struct buf *, size_t);
 int		 preconv_encode(const struct buf *, size_t *,
 			struct buf *, size_t *, int *);
 
 void		 roff_free(struct roff *);
 struct roff	*roff_alloc(struct mparse *, int);
 void		 roff_reset(struct roff *);
 void		 roff_man_free(struct roff_man *);
 struct roff_man	*roff_man_alloc(struct roff *, struct mparse *,
 			const char *, int);
 void		 roff_man_reset(struct roff_man *);
 enum rofferr	 roff_parseln(struct roff *, int, struct buf *, int *);
 void		 roff_endparse(struct roff *);
 void		 roff_setreg(struct roff *, const char *, int, char sign);
 int		 roff_getreg(const struct roff *, const char *);
 char		*roff_strdup(const struct roff *, const char *);
 int		 roff_getcontrol(const struct roff *,
 			const char *, int *);
 int		 roff_getformat(const struct roff *);
-
-const struct tbl_span	*roff_span(const struct roff *);
-const struct eqn	*roff_eqn(const struct roff *);
Index: vendor/mdocml/dist/libroff.h
===================================================================
--- vendor/mdocml/dist/libroff.h	(revision 321806)
+++ vendor/mdocml/dist/libroff.h	(revision 321807)
@@ -1,79 +1,80 @@
-/*	$Id: libroff.h,v 1.39 2015/11/07 14:01:16 schwarze Exp $ */
+/*	$Id: libroff.h,v 1.42 2017/07/08 17:52:49 schwarze Exp $ */
 /*
  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons 
- * Copyright (c) 2014, 2015 Ingo Schwarze 
+ * Copyright (c) 2014, 2015, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
 enum	tbl_part {
 	TBL_PART_OPTS, /* in options (first line) */
 	TBL_PART_LAYOUT, /* describing layout */
 	TBL_PART_DATA, /* creating data rows */
 	TBL_PART_CDATA /* continue previous row */
 };
 
 struct	tbl_node {
 	struct mparse	 *parse; /* parse point */
 	int		  pos; /* invocation column */
 	int		  line; /* invocation line */
 	enum tbl_part	  part;
 	struct tbl_opts	  opts;
 	struct tbl_row	 *first_row;
 	struct tbl_row	 *last_row;
 	struct tbl_span	 *first_span;
 	struct tbl_span	 *current_span;
 	struct tbl_span	 *last_span;
 	struct tbl_node	 *next;
 };
 
 struct	eqn_node {
-	struct eqn	  eqn;    /* syntax tree of this equation */
 	struct mparse	 *parse;  /* main parser, for error reporting */
-	struct eqn_node  *next;   /* singly linked list of equations */
+	struct roff_node *node;   /* syntax tree of this equation */
 	struct eqn_def	 *defs;   /* array of definitions */
 	char		 *data;   /* source code of this equation */
+	char		 *start;  /* first byte of the current token */
+	char		 *end;	  /* first byte of the next token */
 	size_t		  defsz;  /* number of definitions */
 	size_t		  sz;     /* length of the source code */
-	size_t		  cur;    /* parse point in the source code */
-	size_t		  rew;    /* beginning of the current token */
+	size_t		  toksz;  /* length of the current token */
 	int		  gsize;  /* default point size */
 	int		  delim;  /* in-line delimiters enabled */
 	char		  odelim; /* in-line opening delimiter */
 	char		  cdelim; /* in-line closing delimiter */
 };
 
 struct	eqn_def {
 	char		 *key;
 	size_t		  keysz;
 	char		 *val;
 	size_t		  valsz;
 };
 
 
 struct tbl_node	*tbl_alloc(int, int, struct mparse *);
 void		 tbl_restart(int, int, struct tbl_node *);
 void		 tbl_free(struct tbl_node *);
 void		 tbl_reset(struct tbl_node *);
-enum rofferr	 tbl_read(struct tbl_node *, int, const char *, int);
+void		 tbl_read(struct tbl_node *, int, const char *, int);
 void		 tbl_option(struct tbl_node *, int, const char *, int *);
 void		 tbl_layout(struct tbl_node *, int, const char *, int);
 void		 tbl_data(struct tbl_node *, int, const char *, int);
-int		 tbl_cdata(struct tbl_node *, int, const char *, int);
+void		 tbl_cdata(struct tbl_node *, int, const char *, int);
 const struct tbl_span	*tbl_span(struct tbl_node *);
-int		 tbl_end(struct tbl_node **);
-struct eqn_node	*eqn_alloc(int, int, struct mparse *);
-enum rofferr	 eqn_end(struct eqn_node **);
+int		 tbl_end(struct tbl_node *);
+struct eqn_node	*eqn_alloc(struct mparse *);
+void		 eqn_box_free(struct eqn_box *);
 void		 eqn_free(struct eqn_node *);
-enum rofferr	 eqn_read(struct eqn_node **, int,
-			const char *, int, int *);
+void		 eqn_parse(struct eqn_node *);
+void		 eqn_read(struct eqn_node *, const char *);
+void		 eqn_reset(struct eqn_node *);
Index: vendor/mdocml/dist/main.c
===================================================================
--- vendor/mdocml/dist/main.c	(revision 321806)
+++ vendor/mdocml/dist/main.c	(revision 321807)
@@ -1,1112 +1,1185 @@
-/*	$Id: main.c,v 1.292 2017/06/03 12:17:25 schwarze Exp $ */
+/*	$Id: main.c,v 1.301 2017/07/26 10:21:55 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2012 Kristaps Dzonsons 
  * Copyright (c) 2010-2012, 2014-2017 Ingo Schwarze 
  * Copyright (c) 2010 Joerg Sonnenberger 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 #include 	/* MACHINE */
 #include 
 
 #include 
 #include 
 #if HAVE_ERR
 #include 
 #endif
 #include 
 #include 
 #include 
 #if HAVE_SANDBOX_INIT
 #include 
 #endif
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc_aux.h"
 #include "mandoc.h"
+#include "mandoc_xr.h"
 #include "roff.h"
 #include "mdoc.h"
 #include "man.h"
 #include "tag.h"
 #include "main.h"
 #include "manconf.h"
 #include "mansearch.h"
 
 enum	outmode {
 	OUTMODE_DEF = 0,
 	OUTMODE_FLN,
 	OUTMODE_LST,
 	OUTMODE_ALL,
 	OUTMODE_ONE
 };
 
 enum	outt {
 	OUTT_ASCII = 0,	/* -Tascii */
 	OUTT_LOCALE,	/* -Tlocale */
 	OUTT_UTF8,	/* -Tutf8 */
 	OUTT_TREE,	/* -Ttree */
 	OUTT_MAN,	/* -Tman */
 	OUTT_HTML,	/* -Thtml */
 	OUTT_MARKDOWN,	/* -Tmarkdown */
 	OUTT_LINT,	/* -Tlint */
 	OUTT_PS,	/* -Tps */
 	OUTT_PDF	/* -Tpdf */
 };
 
 struct	curparse {
 	struct mparse	 *mp;
-	enum mandoclevel  wlevel;	/* ignore messages below this */
+	struct manoutput *outopts;	/* output options */
+	void		 *outdata;	/* data for output */
+	char		 *os_s;		/* operating system for display */
 	int		  wstop;	/* stop after a file with a warning */
+	enum mandocerr	  mmin;		/* ignore messages below this */
+	enum mandoc_os	  os_e;		/* check base system conventions */
 	enum outt	  outtype;	/* which output to use */
-	void		 *outdata;	/* data for output */
-	struct manoutput *outopts;	/* output options */
 };
 
 
 int			  mandocdb(int, char *[]);
 
+static	void		  check_xr(const char *);
 static	int		  fs_lookup(const struct manpaths *,
 				size_t ipath, const char *,
 				const char *, const char *,
 				struct manpage **, size_t *);
-static	void		  fs_search(const struct mansearch *,
+static	int		  fs_search(const struct mansearch *,
 				const struct manpaths *, int, char**,
 				struct manpage **, size_t *);
 static	int		  koptions(int *, char *);
 static	void		  moptions(int *, char *);
 static	void		  mmsg(enum mandocerr, enum mandoclevel,
 				const char *, int, int, const char *);
 static	void		  outdata_alloc(struct curparse *);
 static	void		  parse(struct curparse *, int, const char *);
 static	void		  passthrough(const char *, int, int);
 static	pid_t		  spawn_pager(struct tag_files *);
 static	int		  toptions(struct curparse *, char *);
 static	void		  usage(enum argmode) __attribute__((__noreturn__));
 static	int		  woptions(struct curparse *, char *);
 
 static	const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9};
 static	char		  help_arg[] = "help";
 static	char		 *help_argv[] = {help_arg, NULL};
 static	enum mandoclevel  rc;
+static	FILE		 *mmsg_stream;
 
 
 int
 main(int argc, char *argv[])
 {
 	struct manconf	 conf;
 	struct mansearch search;
 	struct curparse	 curp;
 	struct tag_files *tag_files;
 	struct manpage	*res, *resp;
 	const char	*progname, *sec, *thisarg;
 	char		*conf_file, *defpaths, *auxpaths;
-	char		*defos, *oarg;
+	char		*oarg;
 	unsigned char	*uc;
 	size_t		 i, sz;
 	int		 prio, best_prio;
 	enum outmode	 outmode;
 	int		 fd;
 	int		 show_usage;
 	int		 options;
 	int		 use_pager;
 	int		 status, signum;
 	int		 c;
 	pid_t		 pager_pid, tc_pgid, man_pgid, pid;
 
 #if HAVE_PROGNAME
 	progname = getprogname();
 #else
 	if (argc < 1)
 		progname = mandoc_strdup("mandoc");
 	else if ((progname = strrchr(argv[0], '/')) == NULL)
 		progname = argv[0];
 	else
 		++progname;
 	setprogname(progname);
 #endif
 
 	if (strncmp(progname, "mandocdb", 8) == 0 ||
 	    strcmp(progname, BINM_MAKEWHATIS) == 0)
 		return mandocdb(argc, argv);
 
 #if HAVE_PLEDGE
 	if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
 		err((int)MANDOCLEVEL_SYSERR, "pledge");
 #endif
 
 #if HAVE_SANDBOX_INIT
 	if (sandbox_init(kSBXProfileNoInternet, SANDBOX_NAMED, NULL) == -1)
 		errx((int)MANDOCLEVEL_SYSERR, "sandbox_init");
 #endif
 
 	/* Search options. */
 
 	memset(&conf, 0, sizeof(conf));
 	conf_file = defpaths = NULL;
 	auxpaths = NULL;
 
 	memset(&search, 0, sizeof(struct mansearch));
 	search.outkey = "Nd";
 	oarg = NULL;
 
 	if (strcmp(progname, BINM_MAN) == 0)
 		search.argmode = ARG_NAME;
 	else if (strcmp(progname, BINM_APROPOS) == 0)
 		search.argmode = ARG_EXPR;
 	else if (strcmp(progname, BINM_WHATIS) == 0)
 		search.argmode = ARG_WORD;
 	else if (strncmp(progname, "help", 4) == 0)
 		search.argmode = ARG_NAME;
 	else
 		search.argmode = ARG_FILE;
 
 	/* Parser and formatter options. */
 
 	memset(&curp, 0, sizeof(struct curparse));
 	curp.outtype = OUTT_LOCALE;
-	curp.wlevel  = MANDOCLEVEL_BADARG;
+	curp.mmin = MANDOCERR_MAX;
 	curp.outopts = &conf.output;
 	options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1;
-	defos = NULL;
+	mmsg_stream = stderr;
 
 	use_pager = 1;
 	tag_files = NULL;
 	show_usage = 0;
 	outmode = OUTMODE_DEF;
 
 	while ((c = getopt(argc, argv,
 	    "aC:cfhI:iK:klM:m:O:S:s:T:VW:w")) != -1) {
 		if (c == 'i' && search.argmode == ARG_EXPR) {
 			optind--;
 			break;
 		}
 		switch (c) {
 		case 'a':
 			outmode = OUTMODE_ALL;
 			break;
 		case 'C':
 			conf_file = optarg;
 			break;
 		case 'c':
 			use_pager = 0;
 			break;
 		case 'f':
 			search.argmode = ARG_WORD;
 			break;
 		case 'h':
 			conf.output.synopsisonly = 1;
 			use_pager = 0;
 			outmode = OUTMODE_ALL;
 			break;
 		case 'I':
 			if (strncmp(optarg, "os=", 3)) {
 				warnx("-I %s: Bad argument", optarg);
 				return (int)MANDOCLEVEL_BADARG;
 			}
-			if (defos) {
+			if (curp.os_s != NULL) {
 				warnx("-I %s: Duplicate argument", optarg);
 				return (int)MANDOCLEVEL_BADARG;
 			}
-			defos = mandoc_strdup(optarg + 3);
+			curp.os_s = mandoc_strdup(optarg + 3);
 			break;
 		case 'K':
 			if ( ! koptions(&options, optarg))
 				return (int)MANDOCLEVEL_BADARG;
 			break;
 		case 'k':
 			search.argmode = ARG_EXPR;
 			break;
 		case 'l':
 			search.argmode = ARG_FILE;
 			outmode = OUTMODE_ALL;
 			break;
 		case 'M':
 			defpaths = optarg;
 			break;
 		case 'm':
 			auxpaths = optarg;
 			break;
 		case 'O':
 			oarg = optarg;
 			break;
 		case 'S':
 			search.arch = optarg;
 			break;
 		case 's':
 			search.sec = optarg;
 			break;
 		case 'T':
 			if ( ! toptions(&curp, optarg))
 				return (int)MANDOCLEVEL_BADARG;
 			break;
 		case 'W':
 			if ( ! woptions(&curp, optarg))
 				return (int)MANDOCLEVEL_BADARG;
 			break;
 		case 'w':
 			outmode = OUTMODE_FLN;
 			break;
 		default:
 			show_usage = 1;
 			break;
 		}
 	}
 
 	if (show_usage)
 		usage(search.argmode);
 
 	/* Postprocess options. */
 
 	if (outmode == OUTMODE_DEF) {
 		switch (search.argmode) {
 		case ARG_FILE:
 			outmode = OUTMODE_ALL;
 			use_pager = 0;
 			break;
 		case ARG_NAME:
 			outmode = OUTMODE_ONE;
 			break;
 		default:
 			outmode = OUTMODE_LST;
 			break;
 		}
 	}
 
 	if (oarg != NULL) {
 		if (outmode == OUTMODE_LST)
 			search.outkey = oarg;
 		else {
 			while (oarg != NULL) {
 				thisarg = oarg;
 				if (manconf_output(&conf.output,
 				    strsep(&oarg, ","), 0) == 0)
 					continue;
 				warnx("-O %s: Bad argument", thisarg);
 				return (int)MANDOCLEVEL_BADARG;
 			}
 		}
 	}
 
 	if (outmode == OUTMODE_FLN ||
 	    outmode == OUTMODE_LST ||
 	    !isatty(STDOUT_FILENO))
 		use_pager = 0;
 
 #if HAVE_PLEDGE
 	if (!use_pager)
 		if (pledge("stdio rpath", NULL) == -1)
 			err((int)MANDOCLEVEL_SYSERR, "pledge");
 #endif
 
 	/* Parse arguments. */
 
 	if (argc > 0) {
 		argc -= optind;
 		argv += optind;
 	}
 	resp = NULL;
 
 	/*
 	 * Quirks for help(1)
 	 * and for a man(1) section argument without -s.
 	 */
 
 	if (search.argmode == ARG_NAME) {
 		if (*progname == 'h') {
 			if (argc == 0) {
 				argv = help_argv;
 				argc = 1;
 			}
 		} else if (argc > 1 &&
 		    ((uc = (unsigned char *)argv[0]) != NULL) &&
 		    ((isdigit(uc[0]) && (uc[1] == '\0' ||
 		      (isalpha(uc[1]) && uc[2] == '\0'))) ||
 		     (uc[0] == 'n' && uc[1] == '\0'))) {
 			search.sec = (char *)uc;
 			argv++;
 			argc--;
 		}
 		if (search.arch == NULL)
 			search.arch = getenv("MACHINE");
 #ifdef MACHINE
 		if (search.arch == NULL)
 			search.arch = MACHINE;
 #endif
 	}
 
 	rc = MANDOCLEVEL_OK;
 
 	/* man(1), whatis(1), apropos(1) */
 
 	if (search.argmode != ARG_FILE) {
 		if (search.argmode == ARG_NAME &&
 		    outmode == OUTMODE_ONE)
 			search.firstmatch = 1;
 
 		/* Access the mandoc database. */
 
 		manconf_parse(&conf, conf_file, defpaths, auxpaths);
 		if ( ! mansearch(&search, &conf.manpath,
 		    argc, argv, &res, &sz))
 			usage(search.argmode);
 
 		if (sz == 0) {
 			if (search.argmode == ARG_NAME)
 				fs_search(&search, &conf.manpath,
 				    argc, argv, &res, &sz);
 			else
 				warnx("nothing appropriate");
 		}
 
 		if (sz == 0) {
 			rc = MANDOCLEVEL_BADARG;
 			goto out;
 		}
 
 		/*
 		 * For standard man(1) and -a output mode,
 		 * prepare for copying filename pointers
 		 * into the program parameter array.
 		 */
 
 		if (outmode == OUTMODE_ONE) {
 			argc = 1;
 			best_prio = 20;
 		} else if (outmode == OUTMODE_ALL)
 			argc = (int)sz;
 
 		/* Iterate all matching manuals. */
 
 		resp = res;
 		for (i = 0; i < sz; i++) {
 			if (outmode == OUTMODE_FLN)
 				puts(res[i].file);
 			else if (outmode == OUTMODE_LST)
 				printf("%s - %s\n", res[i].names,
 				    res[i].output == NULL ? "" :
 				    res[i].output);
 			else if (outmode == OUTMODE_ONE) {
 				/* Search for the best section. */
 				sec = res[i].file;
 				sec += strcspn(sec, "123456789");
 				if (sec[0] == '\0')
 					continue;
 				prio = sec_prios[sec[0] - '1'];
 				if (sec[1] != '/')
 					prio += 10;
 				if (prio >= best_prio)
 					continue;
 				best_prio = prio;
 				resp = res + i;
 			}
 		}
 
 		/*
 		 * For man(1), -a and -i output mode, fall through
 		 * to the main mandoc(1) code iterating files
 		 * and running the parsers on each of them.
 		 */
 
 		if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST)
 			goto out;
 	}
 
 	/* mandoc(1) */
 
 #if HAVE_PLEDGE
 	if (use_pager) {
 		if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1)
 			err((int)MANDOCLEVEL_SYSERR, "pledge");
 	} else {
 		if (pledge("stdio rpath", NULL) == -1)
 			err((int)MANDOCLEVEL_SYSERR, "pledge");
 	}
 #endif
 
 	if (search.argmode == ARG_FILE)
 		moptions(&options, auxpaths);
 
 	mchars_alloc();
-	curp.mp = mparse_alloc(options, curp.wlevel, mmsg, defos);
+	curp.mp = mparse_alloc(options, curp.mmin, mmsg,
+	    curp.os_e, curp.os_s);
 
 	/*
 	 * Conditionally start up the lookaside buffer before parsing.
 	 */
 	if (OUTT_MAN == curp.outtype)
 		mparse_keep(curp.mp);
 
 	if (argc < 1) {
 		if (use_pager)
 			tag_files = tag_init();
 		parse(&curp, STDIN_FILENO, "");
 	}
 
 	while (argc > 0) {
 		fd = mparse_open(curp.mp, resp != NULL ? resp->file : *argv);
 		if (fd != -1) {
 			if (use_pager) {
 				tag_files = tag_init();
 				use_pager = 0;
 			}
 
 			if (resp == NULL)
 				parse(&curp, fd, *argv);
 			else if (resp->form == FORM_SRC) {
 				/* For .so only; ignore failure. */
-				chdir(conf.manpath.paths[resp->ipath]);
+				(void)chdir(conf.manpath.paths[resp->ipath]);
 				parse(&curp, fd, resp->file);
 			} else
 				passthrough(resp->file, fd,
 				    conf.output.synopsisonly);
 
 			if (argc > 1 && curp.outtype <= OUTT_UTF8) {
 				if (curp.outdata == NULL)
 					outdata_alloc(&curp);
 				terminal_sepline(curp.outdata);
 			}
 		} else if (rc < MANDOCLEVEL_ERROR)
 			rc = MANDOCLEVEL_ERROR;
 
 		if (MANDOCLEVEL_OK != rc && curp.wstop)
 			break;
 
 		if (resp != NULL)
 			resp++;
 		else
 			argv++;
 		if (--argc)
 			mparse_reset(curp.mp);
 	}
 
 	if (curp.outdata != NULL) {
 		switch (curp.outtype) {
 		case OUTT_HTML:
 			html_free(curp.outdata);
 			break;
 		case OUTT_UTF8:
 		case OUTT_LOCALE:
 		case OUTT_ASCII:
 			ascii_free(curp.outdata);
 			break;
 		case OUTT_PDF:
 		case OUTT_PS:
 			pspdf_free(curp.outdata);
 			break;
 		default:
 			break;
 		}
 	}
+	mandoc_xr_free();
 	mparse_free(curp.mp);
 	mchars_free();
 
 out:
 	if (search.argmode != ARG_FILE) {
 		manconf_free(&conf);
 		mansearch_free(res, sz);
 	}
 
-	free(defos);
+	free(curp.os_s);
 
 	/*
 	 * When using a pager, finish writing both temporary files,
 	 * fork it, wait for the user to close it, and clean up.
 	 */
 
 	if (tag_files != NULL) {
 		fclose(stdout);
 		tag_write();
 		man_pgid = getpgid(0);
 		tag_files->tcpgid = man_pgid == getpid() ?
 		    getpgid(getppid()) : man_pgid;
 		pager_pid = 0;
 		signum = SIGSTOP;
 		for (;;) {
 
 			/* Stop here until moved to the foreground. */
 
 			tc_pgid = tcgetpgrp(tag_files->ofd);
 			if (tc_pgid != man_pgid) {
 				if (tc_pgid == pager_pid) {
 					(void)tcsetpgrp(tag_files->ofd,
 					    man_pgid);
 					if (signum == SIGTTIN)
 						continue;
 				} else
 					tag_files->tcpgid = tc_pgid;
 				kill(0, signum);
 				continue;
 			}
 
 			/* Once in the foreground, activate the pager. */
 
 			if (pager_pid) {
 				(void)tcsetpgrp(tag_files->ofd, pager_pid);
 				kill(pager_pid, SIGCONT);
 			} else
 				pager_pid = spawn_pager(tag_files);
 
 			/* Wait for the pager to stop or exit. */
 
 			while ((pid = waitpid(pager_pid, &status,
 			    WUNTRACED)) == -1 && errno == EINTR)
 				continue;
 
 			if (pid == -1) {
 				warn("wait");
 				rc = MANDOCLEVEL_SYSERR;
 				break;
 			}
 			if (!WIFSTOPPED(status))
 				break;
 
 			signum = WSTOPSIG(status);
 		}
 		tag_unlink();
 	}
 
 	return (int)rc;
 }
 
 static void
 usage(enum argmode argmode)
 {
 
 	switch (argmode) {
 	case ARG_FILE:
 		fputs("usage: mandoc [-ac] [-I os=name] "
 		    "[-K encoding] [-mdoc | -man] [-O options]\n"
 		    "\t      [-T output] [-W level] [file ...]\n", stderr);
 		break;
 	case ARG_NAME:
 		fputs("usage: man [-acfhklw] [-C file] [-M path] "
 		    "[-m path] [-S subsection]\n"
 		    "\t   [[-s] section] name ...\n", stderr);
 		break;
 	case ARG_WORD:
 		fputs("usage: whatis [-afk] [-C file] "
 		    "[-M path] [-m path] [-O outkey] [-S arch]\n"
 		    "\t      [-s section] name ...\n", stderr);
 		break;
 	case ARG_EXPR:
 		fputs("usage: apropos [-afk] [-C file] "
 		    "[-M path] [-m path] [-O outkey] [-S arch]\n"
 		    "\t       [-s section] expression ...\n", stderr);
 		break;
 	}
 	exit((int)MANDOCLEVEL_BADARG);
 }
 
 static int
 fs_lookup(const struct manpaths *paths, size_t ipath,
 	const char *sec, const char *arch, const char *name,
 	struct manpage **res, size_t *ressz)
 {
 	glob_t		 globinfo;
 	struct manpage	*page;
 	char		*file;
 	int		 globres;
 	enum form	 form;
 
 	form = FORM_SRC;
 	mandoc_asprintf(&file, "%s/man%s/%s.%s",
 	    paths->paths[ipath], sec, name, sec);
 	if (access(file, R_OK) != -1)
 		goto found;
 	free(file);
 
 	mandoc_asprintf(&file, "%s/cat%s/%s.0",
 	    paths->paths[ipath], sec, name);
 	if (access(file, R_OK) != -1) {
 		form = FORM_CAT;
 		goto found;
 	}
 	free(file);
 
 	if (arch != NULL) {
 		mandoc_asprintf(&file, "%s/man%s/%s/%s.%s",
 		    paths->paths[ipath], sec, arch, name, sec);
 		if (access(file, R_OK) != -1)
 			goto found;
 		free(file);
 	}
 
 	mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*",
 	    paths->paths[ipath], sec, name);
 	globres = glob(file, 0, NULL, &globinfo);
 	if (globres != 0 && globres != GLOB_NOMATCH)
 		warn("%s: glob", file);
 	free(file);
 	if (globres == 0)
 		file = mandoc_strdup(*globinfo.gl_pathv);
 	globfree(&globinfo);
-	if (globres != 0)
+	if (globres == 0)
+		goto found;
+	if (res != NULL || ipath + 1 != paths->sz)
 		return 0;
 
+	mandoc_asprintf(&file, "%s.%s", name, sec);
+	globres = access(file, R_OK);
+	free(file);
+	return globres != -1;
+
 found:
 	warnx("outdated mandoc.db lacks %s(%s) entry, run %s %s",
 	    name, sec, BINM_MAKEWHATIS, paths->paths[ipath]);
+	if (res == NULL) {
+		free(file);
+		return 1;
+	}
 	*res = mandoc_reallocarray(*res, ++*ressz, sizeof(struct manpage));
 	page = *res + (*ressz - 1);
 	page->file = file;
 	page->names = NULL;
 	page->output = NULL;
 	page->ipath = ipath;
 	page->bits = NAME_FILE & NAME_MASK;
 	page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10;
 	page->form = form;
 	return 1;
 }
 
-static void
+static int
 fs_search(const struct mansearch *cfg, const struct manpaths *paths,
 	int argc, char **argv, struct manpage **res, size_t *ressz)
 {
 	const char *const sections[] =
 	    {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"};
 	const size_t nsec = sizeof(sections)/sizeof(sections[0]);
 
 	size_t		 ipath, isec, lastsz;
 
 	assert(cfg->argmode == ARG_NAME);
 
-	*res = NULL;
+	if (res != NULL)
+		*res = NULL;
 	*ressz = lastsz = 0;
 	while (argc) {
 		for (ipath = 0; ipath < paths->sz; ipath++) {
 			if (cfg->sec != NULL) {
 				if (fs_lookup(paths, ipath, cfg->sec,
 				    cfg->arch, *argv, res, ressz) &&
 				    cfg->firstmatch)
-					return;
+					return 1;
 			} else for (isec = 0; isec < nsec; isec++)
 				if (fs_lookup(paths, ipath, sections[isec],
 				    cfg->arch, *argv, res, ressz) &&
 				    cfg->firstmatch)
-					return;
+					return 1;
 		}
-		if (*ressz == lastsz)
+		if (res != NULL && *ressz == lastsz)
 			warnx("No entry for %s in the manual.", *argv);
 		lastsz = *ressz;
 		argv++;
 		argc--;
 	}
+	return 0;
 }
 
 static void
 parse(struct curparse *curp, int fd, const char *file)
 {
 	enum mandoclevel  rctmp;
 	struct roff_man	 *man;
 
 	/* Begin by parsing the file itself. */
 
 	assert(file);
 	assert(fd >= 0);
 
 	rctmp = mparse_readfd(curp->mp, fd, file);
 	if (fd != STDIN_FILENO)
 		close(fd);
 	if (rc < rctmp)
 		rc = rctmp;
 
 	/*
 	 * With -Wstop and warnings or errors of at least the requested
 	 * level, do not produce output.
 	 */
 
 	if (rctmp != MANDOCLEVEL_OK && curp->wstop)
 		return;
 
 	if (curp->outdata == NULL)
 		outdata_alloc(curp);
 
 	mparse_result(curp->mp, &man, NULL);
 
 	/* Execute the out device, if it exists. */
 
 	if (man == NULL)
 		return;
+	mandoc_xr_reset();
 	if (man->macroset == MACROSET_MDOC) {
 		if (curp->outtype != OUTT_TREE || !curp->outopts->noval)
 			mdoc_validate(man);
 		switch (curp->outtype) {
 		case OUTT_HTML:
 			html_mdoc(curp->outdata, man);
 			break;
 		case OUTT_TREE:
 			tree_mdoc(curp->outdata, man);
 			break;
 		case OUTT_MAN:
 			man_mdoc(curp->outdata, man);
 			break;
 		case OUTT_PDF:
 		case OUTT_ASCII:
 		case OUTT_UTF8:
 		case OUTT_LOCALE:
 		case OUTT_PS:
 			terminal_mdoc(curp->outdata, man);
 			break;
 		case OUTT_MARKDOWN:
 			markdown_mdoc(curp->outdata, man);
 			break;
 		default:
 			break;
 		}
 	}
 	if (man->macroset == MACROSET_MAN) {
 		if (curp->outtype != OUTT_TREE || !curp->outopts->noval)
 			man_validate(man);
 		switch (curp->outtype) {
 		case OUTT_HTML:
 			html_man(curp->outdata, man);
 			break;
 		case OUTT_TREE:
 			tree_man(curp->outdata, man);
 			break;
 		case OUTT_MAN:
 			man_man(curp->outdata, man);
 			break;
 		case OUTT_PDF:
 		case OUTT_ASCII:
 		case OUTT_UTF8:
 		case OUTT_LOCALE:
 		case OUTT_PS:
 			terminal_man(curp->outdata, man);
 			break;
 		default:
 			break;
 		}
 	}
+	if (curp->mmin < MANDOCERR_STYLE)
+		check_xr(file);
 	mparse_updaterc(curp->mp, &rc);
 }
 
 static void
+check_xr(const char *file)
+{
+	static struct manpaths	 paths;
+	struct mansearch	 search;
+	struct mandoc_xr	*xr;
+	char			*cp;
+	size_t			 sz;
+
+	if (paths.sz == 0)
+		manpath_base(&paths);
+
+	for (xr = mandoc_xr_get(); xr != NULL; xr = xr->next) {
+		if (xr->line == -1)
+			continue;
+		search.arch = NULL;
+		search.sec = xr->sec;
+		search.outkey = NULL;
+		search.argmode = ARG_NAME;
+		search.firstmatch = 1;
+		if (mansearch(&search, &paths, 1, &xr->name, NULL, &sz))
+			continue;
+		if (fs_search(&search, &paths, 1, &xr->name, NULL, &sz))
+			continue;
+		if (xr->count == 1)
+			mandoc_asprintf(&cp, "Xr %s %s", xr->name, xr->sec);
+		else
+			mandoc_asprintf(&cp, "Xr %s %s (%d times)",
+			    xr->name, xr->sec, xr->count);
+		mmsg(MANDOCERR_XR_BAD, MANDOCLEVEL_STYLE,
+		    file, xr->line, xr->pos + 1, cp);
+		free(cp);
+	}
+}
+
+static void
 outdata_alloc(struct curparse *curp)
 {
 	switch (curp->outtype) {
 	case OUTT_HTML:
 		curp->outdata = html_alloc(curp->outopts);
 		break;
 	case OUTT_UTF8:
 		curp->outdata = utf8_alloc(curp->outopts);
 		break;
 	case OUTT_LOCALE:
 		curp->outdata = locale_alloc(curp->outopts);
 		break;
 	case OUTT_ASCII:
 		curp->outdata = ascii_alloc(curp->outopts);
 		break;
 	case OUTT_PDF:
 		curp->outdata = pdf_alloc(curp->outopts);
 		break;
 	case OUTT_PS:
 		curp->outdata = ps_alloc(curp->outopts);
 		break;
 	default:
 		break;
 	}
 }
 
 static void
 passthrough(const char *file, int fd, int synopsis_only)
 {
 	const char	 synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS";
 	const char	 synr[] = "SYNOPSIS";
 
 	FILE		*stream;
 	const char	*syscall;
 	char		*line, *cp;
 	size_t		 linesz;
 	ssize_t		 len, written;
 	int		 print;
 
 	line = NULL;
 	linesz = 0;
 
 	if (fflush(stdout) == EOF) {
 		syscall = "fflush";
 		goto fail;
 	}
 
 	if ((stream = fdopen(fd, "r")) == NULL) {
 		close(fd);
 		syscall = "fdopen";
 		goto fail;
 	}
 
 	print = 0;
 	while ((len = getline(&line, &linesz, stream)) != -1) {
 		cp = line;
 		if (synopsis_only) {
 			if (print) {
 				if ( ! isspace((unsigned char)*cp))
 					goto done;
 				while (isspace((unsigned char)*cp)) {
 					cp++;
 					len--;
 				}
 			} else {
 				if (strcmp(cp, synb) == 0 ||
 				    strcmp(cp, synr) == 0)
 					print = 1;
 				continue;
 			}
 		}
 		for (; len > 0; len -= written) {
 			if ((written = write(STDOUT_FILENO, cp, len)) != -1)
 				continue;
 			fclose(stream);
 			syscall = "write";
 			goto fail;
 		}
 	}
 
 	if (ferror(stream)) {
 		fclose(stream);
 		syscall = "getline";
 		goto fail;
 	}
 
 done:
 	free(line);
 	fclose(stream);
 	return;
 
 fail:
 	free(line);
 	warn("%s: SYSERR: %s", file, syscall);
 	if (rc < MANDOCLEVEL_SYSERR)
 		rc = MANDOCLEVEL_SYSERR;
 }
 
 static int
 koptions(int *options, char *arg)
 {
 
 	if ( ! strcmp(arg, "utf-8")) {
 		*options |=  MPARSE_UTF8;
 		*options &= ~MPARSE_LATIN1;
 	} else if ( ! strcmp(arg, "iso-8859-1")) {
 		*options |=  MPARSE_LATIN1;
 		*options &= ~MPARSE_UTF8;
 	} else if ( ! strcmp(arg, "us-ascii")) {
 		*options &= ~(MPARSE_UTF8 | MPARSE_LATIN1);
 	} else {
 		warnx("-K %s: Bad argument", arg);
 		return 0;
 	}
 	return 1;
 }
 
 static void
 moptions(int *options, char *arg)
 {
 
 	if (arg == NULL)
 		return;
 	if (strcmp(arg, "doc") == 0)
 		*options |= MPARSE_MDOC;
 	else if (strcmp(arg, "an") == 0)
 		*options |= MPARSE_MAN;
 }
 
 static int
 toptions(struct curparse *curp, char *arg)
 {
 
 	if (0 == strcmp(arg, "ascii"))
 		curp->outtype = OUTT_ASCII;
 	else if (0 == strcmp(arg, "lint")) {
 		curp->outtype = OUTT_LINT;
-		curp->wlevel  = MANDOCLEVEL_STYLE;
+		curp->mmin = MANDOCERR_BASE;
+		mmsg_stream = stdout;
 	} else if (0 == strcmp(arg, "tree"))
 		curp->outtype = OUTT_TREE;
 	else if (0 == strcmp(arg, "man"))
 		curp->outtype = OUTT_MAN;
 	else if (0 == strcmp(arg, "html"))
 		curp->outtype = OUTT_HTML;
 	else if (0 == strcmp(arg, "markdown"))
 		curp->outtype = OUTT_MARKDOWN;
 	else if (0 == strcmp(arg, "utf8"))
 		curp->outtype = OUTT_UTF8;
 	else if (0 == strcmp(arg, "locale"))
 		curp->outtype = OUTT_LOCALE;
 	else if (0 == strcmp(arg, "ps"))
 		curp->outtype = OUTT_PS;
 	else if (0 == strcmp(arg, "pdf"))
 		curp->outtype = OUTT_PDF;
 	else {
 		warnx("-T %s: Bad argument", arg);
 		return 0;
 	}
 
 	return 1;
 }
 
 static int
 woptions(struct curparse *curp, char *arg)
 {
 	char		*v, *o;
-	const char	*toks[8];
+	const char	*toks[11];
 
 	toks[0] = "stop";
 	toks[1] = "all";
-	toks[2] = "style";
-	toks[3] = "warning";
-	toks[4] = "error";
-	toks[5] = "unsupp";
-	toks[6] = "fatal";
-	toks[7] = NULL;
+	toks[2] = "base";
+	toks[3] = "style";
+	toks[4] = "warning";
+	toks[5] = "error";
+	toks[6] = "unsupp";
+	toks[7] = "fatal";
+	toks[8] = "openbsd";
+	toks[9] = "netbsd";
+	toks[10] = NULL;
 
 	while (*arg) {
 		o = arg;
 		switch (getsubopt(&arg, (char * const *)toks, &v)) {
 		case 0:
 			curp->wstop = 1;
 			break;
 		case 1:
 		case 2:
-			curp->wlevel = MANDOCLEVEL_STYLE;
+			curp->mmin = MANDOCERR_BASE;
 			break;
 		case 3:
-			curp->wlevel = MANDOCLEVEL_WARNING;
+			curp->mmin = MANDOCERR_STYLE;
 			break;
 		case 4:
-			curp->wlevel = MANDOCLEVEL_ERROR;
+			curp->mmin = MANDOCERR_WARNING;
 			break;
 		case 5:
-			curp->wlevel = MANDOCLEVEL_UNSUPP;
+			curp->mmin = MANDOCERR_ERROR;
 			break;
 		case 6:
-			curp->wlevel = MANDOCLEVEL_BADARG;
+			curp->mmin = MANDOCERR_UNSUPP;
 			break;
+		case 7:
+			curp->mmin = MANDOCERR_MAX;
+			break;
+		case 8:
+			curp->mmin = MANDOCERR_BASE;
+			curp->os_e = MANDOC_OS_OPENBSD;
+			break;
+		case 9:
+			curp->mmin = MANDOCERR_BASE;
+			curp->os_e = MANDOC_OS_NETBSD;
+			break;
 		default:
 			warnx("-W %s: Bad argument", o);
 			return 0;
 		}
 	}
 	return 1;
 }
 
 static void
 mmsg(enum mandocerr t, enum mandoclevel lvl,
 		const char *file, int line, int col, const char *msg)
 {
 	const char	*mparse_msg;
 
-	fprintf(stderr, "%s: %s:", getprogname(),
+	fprintf(mmsg_stream, "%s: %s:", getprogname(),
 	    file == NULL ? "" : file);
 
 	if (line)
-		fprintf(stderr, "%d:%d:", line, col + 1);
+		fprintf(mmsg_stream, "%d:%d:", line, col + 1);
 
-	fprintf(stderr, " %s", mparse_strlevel(lvl));
+	fprintf(mmsg_stream, " %s", mparse_strlevel(lvl));
 
-	if (NULL != (mparse_msg = mparse_strerror(t)))
-		fprintf(stderr, ": %s", mparse_msg);
+	if ((mparse_msg = mparse_strerror(t)) != NULL)
+		fprintf(mmsg_stream, ": %s", mparse_msg);
 
 	if (msg)
-		fprintf(stderr, ": %s", msg);
+		fprintf(mmsg_stream, ": %s", msg);
 
-	fputc('\n', stderr);
+	fputc('\n', mmsg_stream);
 }
 
 static pid_t
 spawn_pager(struct tag_files *tag_files)
 {
 	const struct timespec timeout = { 0, 100000000 };  /* 0.1s */
 #define MAX_PAGER_ARGS 16
 	char		*argv[MAX_PAGER_ARGS];
 	const char	*pager;
 	char		*cp;
 	size_t		 cmdlen;
 	int		 argc;
 	pid_t		 pager_pid;
 
 	pager = getenv("MANPAGER");
 	if (pager == NULL || *pager == '\0')
 		pager = getenv("PAGER");
 	if (pager == NULL || *pager == '\0')
 		pager = "more -s";
 	cp = mandoc_strdup(pager);
 
 	/*
 	 * Parse the pager command into words.
 	 * Intentionally do not do anything fancy here.
 	 */
 
 	argc = 0;
 	while (argc + 4 < MAX_PAGER_ARGS) {
 		argv[argc++] = cp;
 		cp = strchr(cp, ' ');
 		if (cp == NULL)
 			break;
 		*cp++ = '\0';
 		while (*cp == ' ')
 			cp++;
 		if (*cp == '\0')
 			break;
 	}
 
 	/* For less(1), use the tag file. */
 
 	if ((cmdlen = strlen(argv[0])) >= 4) {
 		cp = argv[0] + cmdlen - 4;
 		if (strcmp(cp, "less") == 0) {
 			argv[argc++] = mandoc_strdup("-T");
 			argv[argc++] = tag_files->tfn;
 		}
 	}
 	argv[argc++] = tag_files->ofn;
 	argv[argc] = NULL;
 
 	switch (pager_pid = fork()) {
 	case -1:
 		err((int)MANDOCLEVEL_SYSERR, "fork");
 	case 0:
 		break;
 	default:
 		(void)setpgid(pager_pid, 0);
 		(void)tcsetpgrp(tag_files->ofd, pager_pid);
 #if HAVE_PLEDGE
 		if (pledge("stdio rpath tmppath tty proc", NULL) == -1)
 			err((int)MANDOCLEVEL_SYSERR, "pledge");
 #endif
 		tag_files->pager_pid = pager_pid;
 		return pager_pid;
 	}
 
 	/* The child process becomes the pager. */
 
 	if (dup2(tag_files->ofd, STDOUT_FILENO) == -1)
 		err((int)MANDOCLEVEL_SYSERR, "pager stdout");
 	close(tag_files->ofd);
 	close(tag_files->tfd);
 
 	/* Do not start the pager before controlling the terminal. */
 
 	while (tcgetpgrp(STDOUT_FILENO) != getpid())
 		nanosleep(&timeout, NULL);
 
 	execvp(argv[0], argv);
 	err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]);
 }
Index: vendor/mdocml/dist/man.7
===================================================================
--- vendor/mdocml/dist/man.7	(revision 321806)
+++ vendor/mdocml/dist/man.7	(revision 321807)
@@ -1,901 +1,915 @@
-.\"	$Id: man.7,v 1.135 2017/05/07 21:44:49 schwarze Exp $
+.\"	$Id: man.7,v 1.136 2017/06/25 11:42:02 schwarze Exp $
 .\"
 .\" Copyright (c) 2009, 2010, 2011, 2012 Kristaps Dzonsons 
 .\" Copyright (c) 2011-2015 Ingo Schwarze 
 .\" Copyright (c) 2010 Joerg Sonnenberger 
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above
 .\" copyright notice and this permission notice appear in all copies.
 .\"
 .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: May 7 2017 $
+.Dd $Mdocdate: June 25 2017 $
 .Dt MAN 7
 .Os
 .Sh NAME
 .Nm man
 .Nd legacy formatting language for manual pages
 .Sh DESCRIPTION
 Traditionally, the
 .Nm man
 language has been used to write
 .Ux
 manuals for the
 .Xr man 1
 utility.
 It supports limited control of presentational details like fonts,
 indentation and spacing.
 This reference document describes the structure of manual pages
 and the syntax and usage of the man language.
 .Pp
 .Bf -emphasis
 Do not use
 .Nm
 to write your manuals:
 .Ef
 It lacks support for semantic markup.
 Use the
 .Xr mdoc 7
 language, instead.
 .Pp
 In a
 .Nm
 document, lines beginning with the control character
 .Sq \&.
 are called
 .Dq macro lines .
 The first word is the macro name.
 It usually consists of two capital letters.
 For a list of available macros, see
 .Sx MACRO OVERVIEW .
 The words following the macro name are arguments to the macro.
 .Pp
 Lines not beginning with the control character are called
 .Dq text lines .
 They provide free-form text to be printed; the formatting of the text
 depends on the respective processing context:
 .Bd -literal -offset indent
 \&.SH Macro lines change control state.
 Text lines are interpreted within the current state.
 .Ed
 .Pp
 Many aspects of the basic syntax of the
 .Nm
 language are based on the
 .Xr roff 7
 language; see the
 .Em LANGUAGE SYNTAX
 and
 .Em MACRO SYNTAX
 sections in the
 .Xr roff 7
 manual for details, in particular regarding
 comments, escape sequences, whitespace, and quoting.
 .Sh MANUAL STRUCTURE
 Each
 .Nm
 document must contain the
 .Sx \&TH
 macro describing the document's section and title.
 It may occur anywhere in the document, although conventionally it
 appears as the first macro.
 .Pp
 Beyond
 .Sx \&TH ,
 at least one macro or text line must appear in the document.
 .Pp
 The following is a well-formed skeleton
 .Nm
 file for a utility
 .Qq progname :
 .Bd -literal -offset indent
 \&.TH PROGNAME 1 2009-10-10
 \&.SH NAME
 \efBprogname\efR \e(en one line about what it does
 \&.\e\(dq .SH LIBRARY
 \&.\e\(dq For sections 2, 3, and 9 only.
 \&.\e\(dq Not used in OpenBSD.
 \&.SH SYNOPSIS
 \efBprogname\efR [\efB\e-options\efR] \efIfile ...\efR
 \&.SH DESCRIPTION
 The \efBfoo\efR utility processes files ...
 \&.\e\(dq .Sh CONTEXT
 \&.\e\(dq For section 9 functions only.
 \&.\e\(dq .SH IMPLEMENTATION NOTES
 \&.\e\(dq Not used in OpenBSD.
 \&.\e\(dq .SH RETURN VALUES
 \&.\e\(dq For sections 2, 3, and 9 function return values only.
 \&.\e\(dq .SH ENVIRONMENT
 \&.\e\(dq For sections 1, 6, 7, and 8 only.
 \&.\e\(dq .SH FILES
 \&.\e\(dq .SH EXIT STATUS
 \&.\e\(dq For sections 1, 6, and 8 only.
 \&.\e\(dq .SH EXAMPLES
 \&.\e\(dq .SH DIAGNOSTICS
 \&.\e\(dq For sections 1, 4, 6, 7, 8, and 9 printf/stderr messages only.
 \&.\e\(dq .SH ERRORS
 \&.\e\(dq For sections 2, 3, 4, and 9 errno settings only.
 \&.\e\(dq .SH SEE ALSO
 \&.\e\(dq .BR foobar ( 1 )
 \&.\e\(dq .SH STANDARDS
 \&.\e\(dq .SH HISTORY
 \&.\e\(dq .SH AUTHORS
 \&.\e\(dq .SH CAVEATS
 \&.\e\(dq .SH BUGS
 \&.\e\(dq .SH SECURITY CONSIDERATIONS
 \&.\e\(dq Not used in OpenBSD.
 .Ed
 .Pp
 The sections in a
 .Nm
 document are conventionally ordered as they appear above.
 Sections should be composed as follows:
 .Bl -ohang -offset indent
 .It Em NAME
 The name(s) and a short description of the documented material.
 The syntax for this is generally as follows:
 .Pp
 .D1 \efBname\efR \e(en description
 .It Em LIBRARY
 The name of the library containing the documented material, which is
 assumed to be a function in a section 2 or 3 manual.
 For functions in the C library, this may be as follows:
 .Pp
 .D1 Standard C Library (libc, -lc)
 .It Em SYNOPSIS
 Documents the utility invocation syntax, function call syntax, or device
 configuration.
 .Pp
 For the first, utilities (sections 1, 6, and 8), this is
 generally structured as follows:
 .Pp
 .D1 \efBname\efR [-\efBab\efR] [-\efBc\efR\efIarg\efR] \efBpath\efR...
 .Pp
 For the second, function calls (sections 2, 3, 9):
 .Pp
 .D1 \&.B char *name(char *\efIarg\efR);
 .Pp
 And for the third, configurations (section 4):
 .Pp
 .D1 \&.B name* at cardbus ? function ?
 .Pp
 Manuals not in these sections generally don't need a
 .Em SYNOPSIS .
 .It Em DESCRIPTION
 This expands upon the brief, one-line description in
 .Em NAME .
 It usually contains a break-down of the options (if documenting a
 command).
 .It Em CONTEXT
 This section lists the contexts in which functions can be called in section 9.
 The contexts are autoconf, process, or interrupt.
 .It Em IMPLEMENTATION NOTES
 Implementation-specific notes should be kept here.
 This is useful when implementing standard functions that may have side
 effects or notable algorithmic implications.
 .It Em RETURN VALUES
 This section documents the return values of functions in sections 2, 3, and 9.
 .It Em ENVIRONMENT
 Documents any usages of environment variables, e.g.,
 .Xr environ 7 .
 .It Em FILES
 Documents files used.
 It's helpful to document both the file name and a short description of how
 the file is used (created, modified, etc.).
 .It Em EXIT STATUS
 This section documents the command exit status for
 section 1, 6, and 8 utilities.
 Historically, this information was described in
 .Em DIAGNOSTICS ,
 a practise that is now discouraged.
 .It Em EXAMPLES
 Example usages.
 This often contains snippets of well-formed,
 well-tested invocations.
 Make sure that examples work properly!
 .It Em DIAGNOSTICS
 Documents error conditions.
 In section 4 and 9 manuals, these are usually messages
 printed by the kernel to the console and to the kernel log.
 In section 1, 6, 7, and 8, these are usually messages
 printed by userland programs to the standard error output.
 .Pp
 Historically, this section was used in place of
 .Em EXIT STATUS
 for manuals in sections 1, 6, and 8; however, this practise is
 discouraged.
 .It Em ERRORS
 Documents
 .Xr errno 2
 settings in sections 2, 3, 4, and 9.
 .It Em SEE ALSO
 References other manuals with related topics.
 This section should exist for most manuals.
 .Pp
 .D1 \&.BR bar \&( 1 \&),
 .Pp
 Cross-references should conventionally be ordered
 first by section, then alphabetically.
 .It Em STANDARDS
 References any standards implemented or used, such as
 .Pp
 .D1 IEEE Std 1003.2 (\e(lqPOSIX.2\e(rq)
 .Pp
 If not adhering to any standards, the
 .Em HISTORY
 section should be used.
 .It Em HISTORY
 A brief history of the subject, including where support first appeared.
 .It Em AUTHORS
 Credits to the person or persons who wrote the code and/or documentation.
 Authors should generally be noted by both name and email address.
 .It Em CAVEATS
 Common misuses and misunderstandings should be explained
 in this section.
 .It Em BUGS
 Known bugs, limitations, and work-arounds should be described
 in this section.
 .It Em SECURITY CONSIDERATIONS
 Documents any security precautions that operators should consider.
 .El
 .Sh MACRO OVERVIEW
 This overview is sorted such that macros of similar purpose are listed
 together, to help find the best macro for any given purpose.
 Deprecated macros are not included in the overview, but can be found
 in the alphabetical reference below.
 .Ss Page header and footer meta-data
 .Bl -column "PP, LP, P" description
 .It Sx TH Ta set the title: Ar title section date Op Ar source Op Ar volume
 .It Sx AT Ta display AT&T UNIX version in the page footer (<= 1 argument)
 .It Sx UC Ta display BSD version in the page footer (<= 1 argument)
 .El
 .Ss Sections and paragraphs
 .Bl -column "PP, LP, P" description
 .It Sx SH Ta section header (one line)
 .It Sx SS Ta subsection header (one line)
 .It Sx PP , LP , P Ta start an undecorated paragraph (no arguments)
 .It Sx RS , RE Ta reset the left margin: Op Ar width
 .It Sx IP Ta indented paragraph: Op Ar head Op Ar width
 .It Sx TP Ta tagged paragraph: Op Ar width
 .It Sx HP Ta hanged paragraph: Op Ar width
 .It Sx PD Ta set vertical paragraph distance: Op Ar height
 .It Sx fi , nf Ta fill mode and no-fill mode (no arguments)
 .It Sx in Ta additional indent: Op Ar width
 .El
 .Ss Physical markup
 .Bl -column "PP, LP, P" description
 .It Sx B Ta boldface font
 .It Sx I Ta italic font
 .It Sx R Ta roman (default) font
 .It Sx SB Ta small boldface font
 .It Sx SM Ta small roman font
 .It Sx BI Ta alternate between boldface and italic fonts
 .It Sx BR Ta alternate between boldface and roman fonts
 .It Sx IB Ta alternate between italic and boldface fonts
 .It Sx IR Ta alternate between italic and roman fonts
 .It Sx RB Ta alternate between roman and boldface fonts
 .It Sx RI Ta alternate between roman and italic fonts
 .El
 .Sh MACRO REFERENCE
 This section is a canonical reference to all macros, arranged
 alphabetically.
 For the scoping of individual macros, see
 .Sx MACRO SYNTAX .
 .Ss \&AT
 Sets the volume for the footer for compatibility with man pages from
 .At
 releases.
 The optional arguments specify which release it is from.
 .Ss \&B
 Text is rendered in bold face.
 .Pp
 See also
 .Sx \&I
 and
 .Sx \&R .
 .Ss \&BI
 Text is rendered alternately in bold face and italic.
 Thus,
 .Sq .BI this word and that
 causes
 .Sq this
 and
 .Sq and
 to render in bold face, while
 .Sq word
 and
 .Sq that
 render in italics.
 Whitespace between arguments is omitted in output.
 .Pp
 Examples:
 .Pp
 .Dl \&.BI bold italic bold italic
 .Pp
 The output of this example will be emboldened
 .Dq bold
 and italicised
 .Dq italic ,
 with spaces stripped between arguments.
 .Pp
 See also
 .Sx \&IB ,
 .Sx \&BR ,
 .Sx \&RB ,
 .Sx \&RI ,
 and
 .Sx \&IR .
 .Ss \&BR
 Text is rendered alternately in bold face and roman (the default font).
 Whitespace between arguments is omitted in output.
 .Pp
 See
 .Sx \&BI
 for an equivalent example.
 .Pp
 See also
 .Sx \&BI ,
 .Sx \&IB ,
 .Sx \&RB ,
 .Sx \&RI ,
 and
 .Sx \&IR .
 .Ss \&DT
 Restore the default tabulator positions.
 They are at intervals of 0.5 inches.
 This has no effect unless the tabulator positions were changed with the
 .Xr roff 7
 .Ic \&ta
 request.
 .Ss \&EE
 This is a non-standard GNU extension, included only for compatibility.
 In
 .Xr mandoc 1 ,
 it does the same as
 .Sx \&fi .
 .Ss \&EX
 This is a non-standard GNU extension, included only for compatibility.
 In
 .Xr mandoc 1 ,
 it does the same as
 .Sx \&nf .
 .Ss \&HP
 Begin a paragraph whose initial output line is left-justified, but
 subsequent output lines are indented, with the following syntax:
 .Bd -filled -offset indent
 .Pf \. Sx \&HP
 .Op Ar width
 .Ed
 .Pp
 The
 .Ar width
 argument is a
 .Xr roff 7
 scaling width.
 If specified, it's saved for later paragraph left-margins; if unspecified, the
 saved or default width is used.
 .Pp
 See also
 .Sx \&IP ,
 .Sx \&LP ,
 .Sx \&P ,
 .Sx \&PP ,
 and
 .Sx \&TP .
 .Ss \&I
 Text is rendered in italics.
 .Pp
 See also
 .Sx \&B
 and
 .Sx \&R .
 .Ss \&IB
 Text is rendered alternately in italics and bold face.
 Whitespace between arguments is omitted in output.
 .Pp
 See
 .Sx \&BI
 for an equivalent example.
 .Pp
 See also
 .Sx \&BI ,
 .Sx \&BR ,
 .Sx \&RB ,
 .Sx \&RI ,
 and
 .Sx \&IR .
 .Ss \&IP
 Begin an indented paragraph with the following syntax:
 .Bd -filled -offset indent
 .Pf \. Sx \&IP
 .Op Ar head Op Ar width
 .Ed
 .Pp
 The
 .Ar width
 argument is a
 .Xr roff 7
 scaling width defining the left margin.
 It's saved for later paragraph left-margins; if unspecified, the saved or
 default width is used.
 .Pp
 The
 .Ar head
 argument is used as a leading term, flushed to the left margin.
 This is useful for bulleted paragraphs and so on.
 .Pp
 See also
 .Sx \&HP ,
 .Sx \&LP ,
 .Sx \&P ,
 .Sx \&PP ,
 and
 .Sx \&TP .
 .Ss \&IR
 Text is rendered alternately in italics and roman (the default font).
 Whitespace between arguments is omitted in output.
 .Pp
 See
 .Sx \&BI
 for an equivalent example.
 .Pp
 See also
 .Sx \&BI ,
 .Sx \&IB ,
 .Sx \&BR ,
 .Sx \&RB ,
 and
 .Sx \&RI .
 .Ss \&LP
 Begin an undecorated paragraph.
 The scope of a paragraph is closed by a subsequent paragraph,
 sub-section, section, or end of file.
 The saved paragraph left-margin width is reset to the default.
 .Pp
 See also
 .Sx \&HP ,
 .Sx \&IP ,
 .Sx \&P ,
 .Sx \&PP ,
 and
 .Sx \&TP .
+.Ss \&ME
+End a mailto block.
+This is a non-standard GNU extension, included only for compatibility.
+See
+.Sx \&MT .
+.Ss \&MT
+Begin a mailto block.
+This is a non-standard GNU extension, included only for compatibility.
+It has the following syntax:
+.Bd -literal -offset indent
+.Pf \. Sx \&MT Ar address
+link description to be shown
+.Pf \. Sx ME
+.Ed
 .Ss \&OP
 Optional command-line argument.
 This is a non-standard GNU extension, included only for compatibility.
 It has the following syntax:
 .Bd -filled -offset indent
 .Pf \. Sx \&OP
 .Ar key Op Ar value
 .Ed
 .Pp
 The
 .Ar key
 is usually a command-line flag and
 .Ar value
 its argument.
 .Ss \&P
 Synonym for
 .Sx \&LP .
 .Pp
 See also
 .Sx \&HP ,
 .Sx \&IP ,
 .Sx \&LP ,
 .Sx \&PP ,
 and
 .Sx \&TP .
 .Ss \&PD
 Specify the vertical space to be inserted before each new paragraph.
 .br
 The syntax is as follows:
 .Bd -filled -offset indent
 .Pf \. Sx \&PD
 .Op Ar height
 .Ed
 .Pp
 The
 .Ar height
 argument is a
 .Xr roff 7
 scaling width.
 It defaults to
 .Cm 1v .
 If the unit is omitted,
 .Cm v
 is assumed.
 .Pp
 This macro affects the spacing before any subsequent instances of
 .Sx \&HP ,
 .Sx \&IP ,
 .Sx \&LP ,
 .Sx \&P ,
 .Sx \&PP ,
 .Sx \&SH ,
 .Sx \&SS ,
 and
 .Sx \&TP .
 .Ss \&PP
 Synonym for
 .Sx \&LP .
 .Pp
 See also
 .Sx \&HP ,
 .Sx \&IP ,
 .Sx \&LP ,
 .Sx \&P ,
 and
 .Sx \&TP .
 .Ss \&R
 Text is rendered in roman (the default font).
 .Pp
 See also
 .Sx \&I
 and
 .Sx \&B .
 .Ss \&RB
 Text is rendered alternately in roman (the default font) and bold face.
 Whitespace between arguments is omitted in output.
 .Pp
 See
 .Sx \&BI
 for an equivalent example.
 .Pp
 See also
 .Sx \&BI ,
 .Sx \&IB ,
 .Sx \&BR ,
 .Sx \&RI ,
 and
 .Sx \&IR .
 .Ss \&RE
 Explicitly close out the scope of a prior
 .Sx \&RS .
 The default left margin is restored to the state before that
 .Sx \&RS
 invocation.
 .Pp
 The syntax is as follows:
 .Bd -filled -offset indent
 .Pf \. Sx \&RE
 .Op Ar level
 .Ed
 .Pp
 Without an argument, the most recent
 .Sx \&RS
 block is closed out.
 If
 .Ar level
 is 1, all open
 .Sx \&RS
 blocks are closed out.
 Otherwise,
 .Ar level No \(mi 1
 nested
 .Sx \&RS
 blocks remain open.
 .Ss \&RI
 Text is rendered alternately in roman (the default font) and italics.
 Whitespace between arguments is omitted in output.
 .Pp
 See
 .Sx \&BI
 for an equivalent example.
 .Pp
 See also
 .Sx \&BI ,
 .Sx \&IB ,
 .Sx \&BR ,
 .Sx \&RB ,
 and
 .Sx \&IR .
 .Ss \&RS
 Temporarily reset the default left margin.
 This has the following syntax:
 .Bd -filled -offset indent
 .Pf \. Sx \&RS
 .Op Ar width
 .Ed
 .Pp
 The
 .Ar width
 argument is a
 .Xr roff 7
 scaling width.
 If not specified, the saved or default width is used.
 .Pp
 See also
 .Sx \&RE .
 .Ss \&SB
 Text is rendered in small size (one point smaller than the default font)
 bold face.
 .Ss \&SH
 Begin a section.
 The scope of a section is only closed by another section or the end of
 file.
 The paragraph left-margin width is reset to the default.
 .Ss \&SM
 Text is rendered in small size (one point smaller than the default
 font).
 .Ss \&SS
 Begin a sub-section.
 The scope of a sub-section is closed by a subsequent sub-section,
 section, or end of file.
 The paragraph left-margin width is reset to the default.
 .Ss \&TH
 Sets the title of the manual page for use in the page header
 and footer with the following syntax:
 .Bd -filled -offset indent
 .Pf \. Sx \&TH
 .Ar title section date
 .Op Ar source Op Ar volume
 .Ed
 .Pp
 Conventionally, the document
 .Ar title
 is given in all caps.
 The recommended
 .Ar date
 format is
 .Sy YYYY-MM-DD
 as specified in the ISO-8601 standard;
 if the argument does not conform, it is printed verbatim.
 If the
 .Ar date
 is empty or not specified, the current date is used.
 The optional
 .Ar source
 string specifies the organisation providing the utility.
 When unspecified,
 .Xr mandoc 1
 uses its
 .Fl Ios
 argument.
 The
 .Ar volume
 string replaces the default rendered volume, which is dictated by the
 manual section.
 .Pp
 Examples:
 .Pp
 .Dl \&.TH CVS 5 "1992-02-12" GNU
 .Ss \&TP
 Begin a paragraph where the head, if exceeding the indentation width, is
 followed by a newline; if not, the body follows on the same line after a
 buffer to the indentation width.
 Subsequent output lines are indented.
 The syntax is as follows:
 .Bd -filled -offset indent
 .Pf \. Sx \&TP
 .Op Ar width
 .Ed
 .Pp
 The
 .Ar width
 argument is a
 .Xr roff 7
 scaling width.
 If specified, it's saved for later paragraph left-margins; if
 unspecified, the saved or default width is used.
 .Pp
 See also
 .Sx \&HP ,
 .Sx \&IP ,
 .Sx \&LP ,
 .Sx \&P ,
 and
 .Sx \&PP .
 .Ss \&UC
 Sets the volume for the footer for compatibility with man pages from
 .Bx
 releases.
 The optional first argument specifies which release it is from.
 .Ss \&UE
 End a uniform resource identifier block.
 This is a non-standard GNU extension, included only for compatibility.
 See
 .Sx \&UE .
 .Ss \&UR
 Begin a uniform resource identifier block.
 This is a non-standard GNU extension, included only for compatibility.
 It has the following syntax:
 .Bd -literal -offset indent
 .Pf \. Sx \&UR Ar uri
 link description to be shown
 .Pf \. Sx UE
 .Ed
 .Ss \&fi
 End literal mode begun by
 .Sx \&nf .
 .Ss \&in
 Indent relative to the current indentation:
 .Pp
 .D1 Pf \. Sx \&in Op Ar width
 .Pp
 If
 .Ar width
 is signed, the new offset is relative.
 Otherwise, it is absolute.
 This value is reset upon the next paragraph, section, or sub-section.
 .Ss \&nf
 Begin literal mode: all subsequent free-form lines have their end of
 line boundaries preserved.
 May be ended by
 .Sx \&fi .
 Literal mode is implicitly ended by
 .Sx \&SH
 or
 .Sx \&SS .
 .Sh MACRO SYNTAX
 The
 .Nm
 macros are classified by scope: line scope or block scope.
 Line macros are only scoped to the current line (and, in some
 situations, the subsequent line).
 Block macros are scoped to the current line and subsequent lines until
 closed by another block macro.
 .Ss Line Macros
 Line macros are generally scoped to the current line, with the body
 consisting of zero or more arguments.
 If a macro is scoped to the next line and the line arguments are empty,
 the next line, which must be text, is used instead.
 Thus:
 .Bd -literal -offset indent
 \&.I
 foo
 .Ed
 .Pp
 is equivalent to
 .Sq \&.I foo .
 If next-line macros are invoked consecutively, only the last is used.
 If a next-line macro is followed by a non-next-line macro, an error is
 raised.
 .Pp
 The syntax is as follows:
 .Bd -literal -offset indent
 \&.YO \(lBbody...\(rB
 \(lBbody...\(rB
 .Ed
 .Bl -column "MacroX" "ArgumentsX" "ScopeXXXXX" "CompatX" -offset indent
 .It Em Macro Ta Em Arguments Ta Em Scope     Ta Em Notes
 .It Sx \&AT  Ta    <=1       Ta    current   Ta    \&
 .It Sx \&B   Ta    n         Ta    next-line Ta    \&
 .It Sx \&BI  Ta    n         Ta    current   Ta    \&
 .It Sx \&BR  Ta    n         Ta    current   Ta    \&
 .It Sx \&DT  Ta    0         Ta    current   Ta    \&
 .It Sx \&EE  Ta    0         Ta    current   Ta    compat
 .It Sx \&EX  Ta    0         Ta    current   Ta    compat
 .It Sx \&I   Ta    n         Ta    next-line Ta    \&
 .It Sx \&IB  Ta    n         Ta    current   Ta    \&
 .It Sx \&IR  Ta    n         Ta    current   Ta    \&
 .It Sx \&OP  Ta    0, 1      Ta    current   Ta    compat
 .It Sx \&PD  Ta    1         Ta    current   Ta    \&
 .It Sx \&R   Ta    n         Ta    next-line Ta    \&
 .It Sx \&RB  Ta    n         Ta    current   Ta    \&
 .It Sx \&RI  Ta    n         Ta    current   Ta    \&
 .It Sx \&SB  Ta    n         Ta    next-line Ta    \&
 .It Sx \&SM  Ta    n         Ta    next-line Ta    \&
 .It Sx \&TH  Ta    >1, <6    Ta    current   Ta    \&
 .It Sx \&UC  Ta    <=1       Ta    current   Ta    \&
 .It Sx \&fi  Ta    0         Ta    current   Ta    compat
 .It Sx \&in  Ta    1         Ta    current   Ta    compat
 .It Sx \&nf  Ta    0         Ta    current   Ta    compat
 .El
 .Pp
 Macros marked as
 .Qq compat
 are included for compatibility with the significant corpus of existing
 manuals that mix dialects of roff.
 These macros should not be used for portable
 .Nm
 manuals.
 .Ss Block Macros
 Block macros comprise a head and body.
 As with in-line macros, the head is scoped to the current line and, in
 one circumstance, the next line (the next-line stipulations as in
 .Sx Line Macros
 apply here as well).
 .Pp
 The syntax is as follows:
 .Bd -literal -offset indent
 \&.YO \(lBhead...\(rB
 \(lBhead...\(rB
 \(lBbody...\(rB
 .Ed
 .Pp
 The closure of body scope may be to the section, where a macro is closed
 by
 .Sx \&SH ;
 sub-section, closed by a section or
 .Sx \&SS ;
 part, closed by a section, sub-section, or
 .Sx \&RE ;
 or paragraph, closed by a section, sub-section, part,
 .Sx \&HP ,
 .Sx \&IP ,
 .Sx \&LP ,
 .Sx \&P ,
 .Sx \&PP ,
 or
 .Sx \&TP .
 No closure refers to an explicit block closing macro.
 .Pp
 As a rule, block macros may not be nested; thus, calling a block macro
 while another block macro scope is open, and the open scope is not
 implicitly closed, is syntactically incorrect.
 .Bl -column "MacroX" "ArgumentsX" "Head ScopeX" "sub-sectionX" "compatX" -offset indent
 .It Em Macro Ta Em Arguments Ta Em Head Scope Ta Em Body Scope  Ta Em Notes
 .It Sx \&HP  Ta    <2        Ta    current    Ta    paragraph   Ta    \&
 .It Sx \&IP  Ta    <3        Ta    current    Ta    paragraph   Ta    \&
 .It Sx \&LP  Ta    0         Ta    current    Ta    paragraph   Ta    \&
 .It Sx \&P   Ta    0         Ta    current    Ta    paragraph   Ta    \&
 .It Sx \&PP  Ta    0         Ta    current    Ta    paragraph   Ta    \&
 .It Sx \&RE  Ta    0         Ta    current    Ta    none        Ta    compat
 .It Sx \&RS  Ta    1         Ta    current    Ta    part        Ta    compat
 .It Sx \&SH  Ta    >0        Ta    next-line  Ta    section     Ta    \&
 .It Sx \&SS  Ta    >0        Ta    next-line  Ta    sub-section Ta    \&
 .It Sx \&TP  Ta    n         Ta    next-line  Ta    paragraph   Ta    \&
 .It Sx \&UE  Ta    0         Ta    current    Ta    none        Ta    compat
 .It Sx \&UR  Ta    1         Ta    current    Ta    part        Ta    compat
 .El
 .Pp
 Macros marked
 .Qq compat
 are as mentioned in
 .Sx Line Macros .
 .Pp
 If a block macro is next-line scoped, it may only be followed by in-line
 macros for decorating text.
 .Ss Font handling
 In
 .Nm
 documents, both
 .Sx Physical markup
 macros and
 .Xr roff 7
 .Ql \ef
 font escape sequences can be used to choose fonts.
 In text lines, the effect of manual font selection by escape sequences
 only lasts until the next macro invocation; in macro lines, it only lasts
 until the end of the macro scope.
 Note that macros like
 .Sx \&BR
 open and close a font scope for each argument.
 .Sh SEE ALSO
 .Xr man 1 ,
 .Xr mandoc 1 ,
 .Xr eqn 7 ,
 .Xr mandoc_char 7 ,
 .Xr mdoc 7 ,
 .Xr roff 7 ,
 .Xr tbl 7
 .Sh HISTORY
 The
 .Nm
 language first appeared as a macro package for the roff typesetting
 system in
 .At v7 .
 It was later rewritten by James Clark as a macro package for groff.
 Eric S. Raymond wrote the extended
 .Nm
 macros for groff in 2007.
 The stand-alone implementation that is part of the
 .Xr mandoc 1
 utility written by Kristaps Dzonsons appeared in
 .Ox 4.6 .
 .Sh AUTHORS
 This
 .Nm
 reference was written by
 .An Kristaps Dzonsons Aq Mt kristaps@bsd.lv .
 .Sh CAVEATS
 Do not use this language.
 Use
 .Xr mdoc 7 ,
 instead.
Index: vendor/mdocml/dist/man.c
===================================================================
--- vendor/mdocml/dist/man.c	(revision 321806)
+++ vendor/mdocml/dist/man.c	(revision 321807)
@@ -1,361 +1,383 @@
-/*	$Id: man.c,v 1.174 2017/06/03 15:55:24 schwarze Exp $ */
+/*	$Id: man.c,v 1.176 2017/06/28 12:52:45 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons 
  * Copyright (c) 2013, 2014, 2015, 2017 Ingo Schwarze 
  * Copyright (c) 2011 Joerg Sonnenberger 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc_aux.h"
 #include "mandoc.h"
 #include "roff.h"
 #include "man.h"
 #include "libmandoc.h"
 #include "roff_int.h"
 #include "libman.h"
 
 static	void		 man_descope(struct roff_man *, int, int);
 static	int		 man_ptext(struct roff_man *, int, char *, int);
 static	int		 man_pmacro(struct roff_man *, int, char *, int);
 
 
 int
 man_parseln(struct roff_man *man, int ln, char *buf, int offs)
 {
 
 	if (man->last->type != ROFFT_EQN || ln > man->last->line)
 		man->flags |= MAN_NEWLINE;
 
 	return roff_getcontrol(man->roff, buf, &offs) ?
 	    man_pmacro(man, ln, buf, offs) :
 	    man_ptext(man, ln, buf, offs);
 }
 
 static void
 man_descope(struct roff_man *man, int line, int offs)
 {
 	/*
 	 * Co-ordinate what happens with having a next-line scope open:
 	 * first close out the element scope (if applicable), then close
 	 * out the block scope (also if applicable).
 	 */
 
 	if (man->flags & MAN_ELINE) {
 		man->flags &= ~MAN_ELINE;
 		man_unscope(man, man->last->parent);
 	}
 	if ( ! (man->flags & MAN_BLINE))
 		return;
 	man->flags &= ~MAN_BLINE;
 	man_unscope(man, man->last->parent);
 	roff_body_alloc(man, line, offs, man->last->tok);
 }
 
 static int
 man_ptext(struct roff_man *man, int line, char *buf, int offs)
 {
 	int		 i;
+	const char 	*cp, *sp;
+	char		*ep;
 
 	/* Literal free-form text whitespace is preserved. */
 
 	if (man->flags & MAN_LITERAL) {
 		roff_word_alloc(man, line, offs, buf + offs);
 		man_descope(man, line, offs);
 		return 1;
 	}
 
 	for (i = offs; buf[i] == ' '; i++)
 		/* Skip leading whitespace. */ ;
 
 	/*
-	 * Blank lines are ignored in next line scope and right
-	 * after headings but add a single vertical space elsewhere.
+	 * Blank lines are ignored in next line scope
+	 * and right after headings and cancel preceding \c,
+	 * but add a single vertical space elsewhere.
 	 */
 
 	if (buf[i] == '\0') {
-		if (man->flags & (MAN_ELINE | MAN_BLINE))
+		if (man->flags & (MAN_ELINE | MAN_BLINE)) {
 			mandoc_msg(MANDOCERR_BLK_BLANK, man->parse,
 			    line, 0, NULL);
-		else if (man->last->tok != MAN_SH &&
-		    man->last->tok != MAN_SS) {
-			roff_elem_alloc(man, line, offs, ROFF_sp);
-			man->next = ROFF_NEXT_SIBLING;
+			return 1;
 		}
+		if (man->last->tok == MAN_SH || man->last->tok == MAN_SS)
+			return 1;
+		switch (man->last->type) {
+		case ROFFT_TEXT:
+			sp = man->last->string;
+			cp = ep = strchr(sp, '\0') - 2;
+			if (cp < sp || cp[0] != '\\' || cp[1] != 'c')
+				break;
+			while (cp > sp && cp[-1] == '\\')
+				cp--;
+			if ((ep - cp) % 2)
+				break;
+			*ep = '\0';
+			return 1;
+		default:
+			break;
+		}
+		roff_elem_alloc(man, line, offs, ROFF_sp);
+		man->next = ROFF_NEXT_SIBLING;
 		return 1;
 	}
 
 	/*
 	 * Warn if the last un-escaped character is whitespace. Then
 	 * strip away the remaining spaces (tabs stay!).
 	 */
 
 	i = (int)strlen(buf);
 	assert(i);
 
 	if (' ' == buf[i - 1] || '\t' == buf[i - 1]) {
 		if (i > 1 && '\\' != buf[i - 2])
 			mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
 			    line, i - 1, NULL);
 
 		for (--i; i && ' ' == buf[i]; i--)
 			/* Spin back to non-space. */ ;
 
 		/* Jump ahead of escaped whitespace. */
 		i += '\\' == buf[i] ? 2 : 1;
 
 		buf[i] = '\0';
 	}
 	roff_word_alloc(man, line, offs, buf + offs);
 
 	/*
 	 * End-of-sentence check.  If the last character is an unescaped
 	 * EOS character, then flag the node as being the end of a
 	 * sentence.  The front-end will know how to interpret this.
 	 */
 
 	assert(i);
 	if (mandoc_eos(buf, (size_t)i))
 		man->last->flags |= NODE_EOS;
 
 	man_descope(man, line, offs);
 	return 1;
 }
 
 static int
 man_pmacro(struct roff_man *man, int ln, char *buf, int offs)
 {
 	struct roff_node *n;
 	const char	*cp;
 	size_t		 sz;
 	enum roff_tok	 tok;
 	int		 ppos;
 	int		 bline;
 
 	/* Determine the line macro. */
 
 	ppos = offs;
 	tok = TOKEN_NONE;
 	for (sz = 0; sz < 4 && strchr(" \t\\", buf[offs]) == NULL; sz++)
 		offs++;
 	if (sz > 0 && sz < 4)
 		tok = roffhash_find(man->manmac, buf + ppos, sz);
 	if (tok == TOKEN_NONE) {
 		mandoc_msg(MANDOCERR_MACRO, man->parse,
 		    ln, ppos, buf + ppos - 1);
 		return 1;
 	}
 
 	/* Skip a leading escape sequence or tab. */
 
 	switch (buf[offs]) {
 	case '\\':
 		cp = buf + offs + 1;
 		mandoc_escape(&cp, NULL, NULL);
 		offs = cp - buf;
 		break;
 	case '\t':
 		offs++;
 		break;
 	default:
 		break;
 	}
 
 	/* Jump to the next non-whitespace word. */
 
 	while (buf[offs] == ' ')
 		offs++;
 
 	/*
 	 * Trailing whitespace.  Note that tabs are allowed to be passed
 	 * into the parser as "text", so we only warn about spaces here.
 	 */
 
 	if (buf[offs] == '\0' && buf[offs - 1] == ' ')
 		mandoc_msg(MANDOCERR_SPACE_EOL, man->parse,
 		    ln, offs - 1, NULL);
 
 	/*
 	 * Some macros break next-line scopes; otherwise, remember
 	 * whether we are in next-line scope for a block head.
 	 */
 
 	man_breakscope(man, tok);
 	bline = man->flags & MAN_BLINE;
 
 	/*
 	 * If the line in next-line scope ends with \c, keep the
 	 * next-line scope open for the subsequent input line.
 	 * That is not at all portable, only groff >= 1.22.4
 	 * does it, but *if* this weird idiom occurs in a manual
 	 * page, that's very likely what the author intended.
 	 */
 
 	if (bline) {
 		cp = strchr(buf + offs, '\0') - 2;
 		if (cp >= buf && cp[0] == '\\' && cp[1] == 'c')
 			bline = 0;
 	}
 
 	/* Call to handler... */
 
 	assert(man_macros[tok].fp);
 	(*man_macros[tok].fp)(man, tok, ln, ppos, &offs, buf);
 
 	/* In quick mode (for mandocdb), abort after the NAME section. */
 
 	if (man->quick && tok == MAN_SH) {
 		n = man->last;
 		if (n->type == ROFFT_BODY &&
 		    strcmp(n->prev->child->string, "NAME"))
 			return 2;
 	}
 
 	/*
 	 * If we are in a next-line scope for a block head,
 	 * close it out now and switch to the body,
 	 * unless the next-line scope is allowed to continue.
 	 */
 
 	if ( ! bline || man->flags & MAN_ELINE ||
 	    man_macros[tok].flags & MAN_NSCOPED)
 		return 1;
 
 	assert(man->flags & MAN_BLINE);
 	man->flags &= ~MAN_BLINE;
 
 	man_unscope(man, man->last->parent);
 	roff_body_alloc(man, ln, ppos, man->last->tok);
 	return 1;
 }
 
 void
 man_breakscope(struct roff_man *man, int tok)
 {
 	struct roff_node *n;
 
 	/*
 	 * An element next line scope is open,
 	 * and the new macro is not allowed inside elements.
 	 * Delete the element that is being broken.
 	 */
 
 	if (man->flags & MAN_ELINE && (tok < MAN_TH ||
 	    ! (man_macros[tok].flags & MAN_NSCOPED))) {
 		n = man->last;
-		assert(n->type != ROFFT_TEXT);
-		if (man_macros[n->tok].flags & MAN_NSCOPED)
+		if (n->type == ROFFT_TEXT)
 			n = n->parent;
+		if (n->tok < MAN_TH ||
+		    man_macros[n->tok].flags & MAN_NSCOPED)
+			n = n->parent;
 
 		mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse,
 		    n->line, n->pos, "%s breaks %s",
 		    roff_name[tok], roff_name[n->tok]);
 
 		roff_node_delete(man, n);
 		man->flags &= ~MAN_ELINE;
 	}
 
 	/*
 	 * Weird special case:
 	 * Switching fill mode closes section headers.
 	 */
 
 	if (man->flags & MAN_BLINE &&
 	    (tok == MAN_nf || tok == MAN_fi) &&
 	    (man->last->tok == MAN_SH || man->last->tok == MAN_SS)) {
 		n = man->last;
 		man_unscope(man, n);
 		roff_body_alloc(man, n->line, n->pos, n->tok);
 		man->flags &= ~MAN_BLINE;
 	}
 
 	/*
 	 * A block header next line scope is open,
 	 * and the new macro is not allowed inside block headers.
 	 * Delete the block that is being broken.
 	 */
 
 	if (man->flags & MAN_BLINE && (tok < MAN_TH ||
 	    man_macros[tok].flags & MAN_BSCOPE)) {
 		n = man->last;
 		if (n->type == ROFFT_TEXT)
 			n = n->parent;
-		if ( ! (man_macros[n->tok].flags & MAN_BSCOPE))
+		if (n->tok < MAN_TH ||
+		    (man_macros[n->tok].flags & MAN_BSCOPE) == 0)
 			n = n->parent;
 
 		assert(n->type == ROFFT_HEAD);
 		n = n->parent;
 		assert(n->type == ROFFT_BLOCK);
 		assert(man_macros[n->tok].flags & MAN_SCOPED);
 
 		mandoc_vmsg(MANDOCERR_BLK_LINE, man->parse,
 		    n->line, n->pos, "%s breaks %s",
 		    roff_name[tok], roff_name[n->tok]);
 
 		roff_node_delete(man, n);
 		man->flags &= ~MAN_BLINE;
 	}
 }
 
 const struct mparse *
 man_mparse(const struct roff_man *man)
 {
 
 	assert(man && man->parse);
 	return man->parse;
 }
 
 void
 man_state(struct roff_man *man, struct roff_node *n)
 {
 
 	switch(n->tok) {
 	case MAN_nf:
 	case MAN_EX:
 		if (man->flags & MAN_LITERAL && ! (n->flags & NODE_VALID))
 			mandoc_msg(MANDOCERR_NF_SKIP, man->parse,
 			    n->line, n->pos, "nf");
 		man->flags |= MAN_LITERAL;
 		break;
 	case MAN_fi:
 	case MAN_EE:
 		if ( ! (man->flags & MAN_LITERAL) &&
 		     ! (n->flags & NODE_VALID))
 			mandoc_msg(MANDOCERR_FI_SKIP, man->parse,
 			    n->line, n->pos, "fi");
 		man->flags &= ~MAN_LITERAL;
 		break;
 	default:
 		break;
 	}
 	man->last->flags |= NODE_VALID;
 }
 
 void
 man_validate(struct roff_man *man)
 {
 
 	man->last = man->first;
 	man_node_validate(man);
 	man->flags &= ~MAN_LITERAL;
 }
Index: vendor/mdocml/dist/man.options.1
===================================================================
--- vendor/mdocml/dist/man.options.1	(revision 321806)
+++ vendor/mdocml/dist/man.options.1	(revision 321807)
@@ -1,1326 +1,1332 @@
-.\"	$Id: man.options.1,v 1.6 2017/02/02 20:10:51 schwarze Exp $
+.\"	$Id: man.options.1,v 1.7 2017/07/04 23:40:01 schwarze Exp $
 .\"
 .\" Copyright (c) 2017 Ingo Schwarze 
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above
 .\" copyright notice and this permission notice appear in all copies.
 .\"
 .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: February 2 2017 $
+.Dd $Mdocdate: July 4 2017 $
 .Dt MAN.OPTIONS 1
 .Os
 .Sh NAME
 .Nm man.options
 .Nd assignment of option letters in manual page utilities
 .\"
 .\" Sources that occur repeatedly.
 .\" Only use if the precise implementation time is unknown.
 .\"
 .de PWB
 .No PWB/UNIX 1.0 Pq July 1, 1977 \\$1
 ..
 .de At7
 .At v7 Pq January 1979 \\$1
 ..
 .de At3
 .At III Pq June 1980 \\$1
 ..
 .de Bx4
 .Bx 4 Pq November 16, 1980 \\$1
 ..
 .de At5
 .At V Pq January 1983 \\$1
 ..
 .de Bx43
 .Bx 4.3 Pq June 1986 \\$1
 ..
 .\" option was present in groff-1.01 as contained in 4.3BSD-Net/2
 .\" and no mention of it could be found in the ChangeLog,
 .\" so it's probably older than groff-0.4, where the log started
 .de g04
 .No probably before groff-0.4 Pq before July 14, 1990 \\$1
 ..
 .de Eaton
 .No Eaton Pq before July 7, 1993; 1990/91? \\$1
 ..
 .\" man-1.5e was released on July 11, 1998.
 .de man15e
 .No man-1.5e Pq not before 1993, not after 1998 \\$1
 ..
 .\" man-1.5g was released on April 7, 1999.
 .de man15g
 .No man-1.5g Pq not before 1993, not after 1999 \\$1
 ..
 .\" code first seen in the initial import of man-db into CVS ,
 .\" which was more or less debian man-db-2.3.17
 .\" Colin Watson's first release was 2.3.18 on May 14, 2001
 .\" no clue about it found in ChangeLog-2013,
 .\" so it was probably already present before man-db-2.2a4
 .de dbI
 .No man-db probably before 2.2a4 Pq before Nov 8, 1994 \\$1
 ..
 .\"
 .\" --------------------------------------------------------------------
 .\"
 .Sh DESCRIPTION
 This manual page lists option letters used in many different versions
 of the
 .Nm man ,
 .Nm apropos ,
 .Nm whatis ,
 .Nm mandoc ,
 .Nm makewhatis ,
 .Nm mandb ,
 .Nm makemandb ,
 .Nm catman ,
 and
 .Nm manpath
 utilities.
 Option letters used by
 .Nm groff ,
 .Nm nroff ,
 .Nm troff ,
 and
 .Nm roff
 are also included because beginning with
 .At v7 ,
 many versions of
 .Xr man 1
 pass on unrecognized options to these programs.
 .Pp
 For each option letter, information is first grouped into paragraphs,
 each paragraph describing similar functionality and starting with
 one line briefly summarizing that functionality.
 .Pp
 For each program using the letter for that functionality, one line
 is provided, giving the name of the program, a colon, the system
 where this letter first appeared for this functionality in this
 program, optionally a comma and a list of other system versions
 introducing the same, a semicolon, and a list of current systems
 supporting it.
 If a system appears before the semicolon, it is not repeated
 afterwards.
 .Pp
 Entries are sorted by historical precedence, except that obsolete
 options are moved to the end.
 Dates are commit dates where known, and release dates otherwise.
 .Bl -tag -width 3n
 .It Fl a
 display all matching manual pages
 .br
 .Nm man :
 .Bx 4.3 Tahoe Pq June 1988 ,
 .Eaton ;
 .Ox , Fx , Nx , No man-db , man-1.6 , illumos , Solaris 9-11
 .br
 .Nm apropos , whatis , mandoc :
 .Ox 5.7 Pq August 27, 2014
 .Pp
 only display items that match all keywords
 .br
 .Nm apropos :
 .No man-db Pq Aug 29, 2007
 .Pp
 use all directories and files for
 .Xr mandoc.db 5
 .br
 .Nm makewhatis :
 .Ox 5.6 Pq April 18, 2014
 .Pp
 .Bq superseded by Fl T Cm ascii
 ASCII output mode
 .br
 .Nm troff :
 .At7
 .br
 .Nm groff :
 .g04
 .It Fl B
 use specified browser
 .br
 .Nm man :
 .No man-1.6 Pq June 24, 2005
 .It Fl b
 print a backtrace with each warning or error message
 .br
 .Nm groff :
 .g04
 .Pp
 .Bq obsolete hardware
 report whether the phototypesetter is busy
 .br
 .Nm troff :
 .At7
 .It Fl C
 alternate configuration file
 .br
 .Nm apropos , whatis :
 .Bx 4.4 Lite1 Pq April 22, 1994 ,
 .No man-db Pq Feb 22, 2003 ;
 .Ox , Nx
 .br
 .Nm man :
 .Nx 1.0 Pq Oct 26, 1994 ,
 .man15e ;
 .Ox
 .br
 .Nm mandb , catman , manpath :
 .No man-db Pq Feb 22, 2003
 .br
 .Nm makemandb :
 .Nx Pq Feb 7, 2012
 .br
 .Nm makewhatis :
 .Ox 5.6 Pq April 18, 2014
 .br
 .Nm mandoc :
 .Ox 5.7 Pq August 27, 2014
 .Pp
 .Bq obsolete
 enable compatibility mode
 .br
 .Nm groff :
 .No before groff-0.5 Pq before August 3, 1990
 .It Fl c
 do not use a pager
 .br
 .Nm man :
 .Bx 4.3 Reno Pq June 1990 ;
 .Ox , Nx
 .br
 .Nm apropos , whatis , mandoc :
 .Ox 5.7 Pq August 27, 2014
 .Pp
 process given catpath
 .br
 .Nm makewhatis :
 .Pq not before 1992, not after 1995
 .Pp
 recreate databases from scratch
 .br
 .Nm mandb :
 .dbI
 .Pp
 produce a catpath as opposed to a manpath
 .br
 .Nm manpath :
 .dbI
 .Pp
 internal option for use by
 .Xr catman 1
 .br
 .Nm man :
 .dbI
 .Pp
 reformat source page even if cat page exists
 .br
 .Nm man :
 .man15e
 .Pp
 disable terminal color output in
 .Xr grotty 1
 .br
 .Nm groff :
 .No groff-1.18.0 Pq Oct 4, 2001
 .Pp
 recreate nroff versions from SGML sources
 .br
 .Nm catman :
 .No Solaris 9-11
 .Pp
 .Bq obsolete
 postprocess with
 .Xr col 1
 .br
 .Nm man :
 .At3 ,
 .At5
 .It Fl D
 reset whatever was set with
 .Ev MANOPT
 .br
 .Nm man :
 .dbI
 .Pp
 print debugging info in addition to manual page
 .br
 .Nm man :
 .man15e
 .Pp
 set default input encoding for
 .Xr preconv 1
 .br
 .Nm groff :
 .No groff-1.20 Pq August 20, 2008
 .Pp
 display all files added to
 .Xr mandoc.db 5
 .br
 .Nm makewhatis :
 .Ox 5.6 Pq April 18, 2014
 .It Fl d
 define a user-defined string
 .br
 .Nm groff :
 .g04
 .Pp
 print debugging information
 .br
 .Nm man :
 .Eaton ;
 .Fx , No man-db , man-1.6 , illumos , Solaris 9-11
 .br
 .Nm manpath :
 .Eaton ;
 .Fx , No man-db
 .br
 .Nm apropos , whatis :
 .dbI ;
 .Fx
 .br
 .Nm mandb , catman :
 .dbI
 .Pp
 remove and re-add a file to
 .Xr mandoc.db 5
 .br
 .Nm makewhatis :
 .Ox 2.7 Pq Feb 3, 2000
 .Pp
 .Bq superseded by Fl l
 interpret arguments as file names
 .br
 .Nm man :
 .At3 ,
 .At5
 .It Fl E
 inhibit all error messages
 .br
 .Nm groff :
 .g04
 .Pp
 select output encoding
 .br
 .Nm man :
 .No man-db Pq Dec 23, 2001
 .It Fl e
 preprocess with
 .Xr eqn 7
 .br
 .Nm man :
 .At7
 .br
 .Nm groff :
 .g04
 .Pp
 adjust text to left and right margins
 .br
 .Nm nroff :
 .At7
 .Pp
 use exact matching
 .br
 .Nm apropos , whatis :
 .dbI
 .Pp
 restrict search by section extension
 .br
 .Nm man :
 .No man-db-2.3.5 Pq April 21, 1995
 .It Fl F
 use alternate font directory
 .br
 .Nm troff :
 .Bx 4.2 Pq September 1983
 .br
 .Nm groff :
 .g04
 .Pp
 preformat only, do not display
 .br
 .Nm man :
 .No man-1.5g Pq April 7, 1999
 .Pp
 force searching dirs, do not use index (default)
 .br
 .Nm man :
 .No illumos , Solaris 9-11
 .It Fl f
 .Xr whatis 1
 mode
 .br
 .Nm man :
 .Bx4 ,
 .Eaton ;
 .Ox , Fx , No man-db , man-1.6
 .br
 .Nm apropos , whatis :
 .No man-db Pq Dec 2, 2010 ,
 .Ox 5.7 Pq August 27, 2014
 .br
 .Nm mandoc :
 .Ox 5.7 Pq August 27, 2014
 .Pp
 set the default font family
 .br
 .Nm groff :
 .g04
 .Pp
 force formatting even if cat page is newer
 .br
 .Nm catman :
 .Fx Pq March 15, 1995
 .Pp
 update only the entries for the given file
 .br
 .Nm mandb :
 .No man-db Pq Feb 21, 2003
 .Pp
 force rebuilding the database from scratch
 .br
 .Nm makemandb :
 .Nx Pq Feb 7, 2012
 .Pp
 locate manual page related to given file name
 .br
 .Nm man :
 .No illumos , Solaris 9-11
 .Pp
 .Bq obsolete hardware
 do not feed out paper nor stop phototypesetter
 .br
 .Nm troff :
 .At7
 .It Fl G
 preprocess with
 .Xr grap 1
 .br
 .Nm groff :
 .No groff-1.16 Pq May 1, 2000
 .It Fl g
 produce a global manpath
 .br
 .Nm manpath :
 .No man-db-2.2a7 Pq Nov 16, 1994
 .Pp
 preprocess with
 .Xr grn 1
 .br
 .Nm groff :
 .No groff-1.16 Pq Feb 20, 2000
 .Pp
 .Bq obsolete hardware
 output to a GCOS phototypesetter
 .br
 .Nm troff :
 .At7
 .Pp
 .Bq obsolete hardware
 output to a DASI 300 terminal in 12-pitch mode
 .br
 .Nm man :
 .PWB
 .It Fl H
 read hyphenation patterns from the given file
 .br
 .Nm groff :
 .g04
 .Pp
 produce HTML output
 .br
 .Nm man :
 .No man-db-1.3.12 to 1.3.17 Pq not before 1996, not after 2001
 .Pp
 use program to render HTML files as text
 .br
 .Nm man :
 .No man-1.6 Pq June 24, 2005
 .It Fl h
 print a help message and exit
 .br
 .Nm groff :
 .g04
 .br
 .Nm man :
 .Eaton ;
 .Fx , No man-db , man-1.6
 .br
 .Nm manpath :
 .Eaton ;
 .Fx , No man-db
 .br
 .Nm apropos , whatis , mandb , catman :
 .dbI
 .Pp
 display the SYNOPSIS lines only
 .br
 .Nm man :
 .Bx 4.3 Net/2 Pq August 20, 1991 ;
 .Ox , Nx
 .br
 .Nm apropos , whatis , mandoc :
 .Ox 5.7 Pq Sep 3, 2014
 .Pp
 turn on HTML formatting
 .br
 .Nm apropos :
 .Nx Pq Apr 2, 2013
 .Pp
 .Bq obsolete
 replace spaces by tabs in the output
 .br
 .Nm roff , nroff :
 .At7
 .It Fl I
 input file search path for
 .Xr soelim 1
 .br
 .Nm groff :
 .No groff-1.12 Pq Sep 11, 1999
 .Pp
 respect case when matching manual page names
 .br
 .Nm man , catman :
 .No man-db Pq Apr 21, 2002
 .Pp
 input options, in particular default operating system name
 .br
 .Nm mandoc :
 .Ox 5.2 Pq May 24, 2012
 .br
 .Nm man , apropos , whatis :
 .Ox 5.7 Pq August 27, 2014
 .It Fl i
 read standard input after the input files are exhausted
 .br
 .Nm nroff , troff :
 .At7
 .br
 .Nm groff :
 .g04
 .Pp
 ignore case when matching manual page names
 .br
 .Nm man , catman :
 .No man-db Pq Apr 21, 2002
 .Pp
 turn on terminal escape code formatting
 .br
 .Nm apropos :
 .Nx Pq March 29, 2013
 .It Fl J
 preprocess with
 .Xr gideal 1
 .br
 .Nm groff :
 .No groff-1.22.3 Pq June 17, 2014
 .It Fl j
 preprocess with
 .Xr chem 1
 .br
 .Nm groff :
 .No groff-1.22 Pq Jan 22, 2011
 .It Fl K
 source code full text search
 .br
 .Nm man :
 .man15e ,
 .No man-db Pq June 28, 2009 ;
 .No Solaris 11
 .Pp
 input encoding
 .br
 .Nm groff :
 .No groff-1.20 Pq Dec 31, 2005
 .br
 .Nm man , apropos , whatis , mandoc :
 .Ox 5.7 Pq Oct 30, 2014
 .It Fl k
 .Xr apropos 1
 mode
 .br
 .Nm man :
 .Bx4 ,
 .Eaton ;
 .No POSIX , Ox , Fx , Nx , No man-db , man-1.6 , illumos , Solaris 9-11
 .br
 .Nm apropos , whatis , mandoc :
 .Ox 5.7 Pq August 27, 2014
 .Pp
 ignore formatting errors
 .br
 .Nm catman :
 .Nx Pq April 26, 1994
 .Pp
 preprocess with
 .Xr preconv 1
 .br
 .Nm groff :
 .No groff-1.20 Pq Dec 31, 2005
 .Pp
 .Bq obsolete hardware
 display on a Tektronix 4014 terminal
 .br
 .Nm man :
 .At7
 .It Fl L
 pass argument to the spooler
 .br
 .Nm groff :
 .No groff-0.6 Pq Sep 14, 1990
 .Pp
 use alternate
 .Xr locale 1
 .br
 .Nm man , apropos , whatis :
 .No before man-db-2.2a13 Pq before Dec 15, 1994
 .Pp
 print list of locales
 .br
 .Nm manpath :
 .Fx Pq Nov 23, 1999
 .Pp
 use
 .Xr locale 1
 specified in the environment
 .br
 .Nm catman :
 .Fx Pq May 18, 2002
 .It Fl l
 spool the output
 .br
 .Nm groff :
 .g04
 .Pp
 interpret arguments as file names
 .br
 .Nm man :
 .No before man-2.2a7 Pq before Nov 16, 1994 ,
 .Ox 5.7 Pq Aug 30, 2014
 .br
 .Nm apropos , whatis , mandoc :
 .Ox 5.7 Pq Aug 30, 2014
 .Pp
 do not trim output to the terminal width
 .br
 .Nm apropos , whatis :
 .No man-db Pq Aug 19, 2007
 .Pp
 only parse NAME sections
 .br
 .Nm makemandb :
 .Nx Pq Feb 7, 2012
 .Pp
 legacy mode: search Nm,Nd, no context or formatting
 .br
 .Nm apropos :
 .Nx Pq March 29, 2013
 .Pp
 list all manual pages matching name within the search path
 .br
 .Nm man :
 .No illumos , Solaris 9-11
 .It Fl M
 override manual page search path
 .br
 .Nm man :
 .Bx43 ,
 .Eaton ;
 .Ox , Fx , Nx , No man-db , man-1.6 , illumos , Solaris 9-11
 .br
 .Nm apropos , whatis :
 .Bx43 ,
 .No before man-db-2.2a14 Pq before Dec 16, 1994 ;
 .Ox , No illumos
 .br
 .Nm catman :
 .dbI ;
 .Nx Pq July 27, 1993 ,
 .No Solaris 9-11
 .br
 .Nm mandoc :
 .Ox 5.7 Pq August 27, 2014
 .Pp
 prepend to macro file search path
 .br
 .Nm groff :
 .g04
 .Pp
 do not show the context of the match
 .br
 .Nm apropos :
 .Nx Pq May 22, 2016
 .It Fl m
 specify input macro language
 .br
 .Nm nroff , troff :
 .At7
 .br
 .Nm groff :
 .g04
 .br
 .Nm mandoc :
 .Ox 4.8 Pq April 6, 2009
 .Pp
 augment manual page search path
 .br
 .Nm man , apropos , whatis :
 .Bx 4.3 Reno Pq June 1990 ;
 .Ox , Nx
 .br
 .Nm catman :
 .Nx Pq Apr 4, 1999
 .br
 .Nm mandoc :
 .Ox 5.7 Pq August 27, 2014
 .Pp
 override operating system
 .br
 .Nm man :
 .Eaton ;
 .No man-db , man-1.6
 .br
 .Nm apropos , whatis , manpath :
 .dbI
 .Pp
 override architecture
 .br
 .Nm man :
 .Fx Pq Jan 11, 2002
 .Pp
 show the context of the match
 .br
 .Nm apropos :
 .Nx Pq May 22, 2016
 .It Fl N
 do not allow newlines between
 .Xr eqn 7
 delimiters
 .br
 .Nm groff :
 .No groff-1.01 Pq Feb 21, 1991
 .It Fl n
 specify a page number for the first page
 .br
 .Nm troff :
 .At7
 .br
 .Nm groff :
 .g04
 .Pp
 .Xr nroff 1
 output mode
 .br
 .Nm man :
 .At7
 .Pp
 do not create the
 .Xr whatis 1
 database
 .br
 .Nm catman :
 .Nx Pq July 27, 1993
 .Pp
 print commands instead of executing them
 .br
 .Nm catman :
 .Fx Pq May 18, 2002 ,
 .No Solaris 9-11
 .Pp
 limit the number of results
 .br
 .Nm apropos :
 .Nx Pq Feb 7, 2012
 .Pp
 dry run simulating
 .Xr mandoc.db 5
 creation
 .br
 .Nm makewhatis :
 .Ox 5.6 Pq April 18, 2014
 .It Fl O
 output options
 .br
 .Nm mandoc :
 .Ox 4.8 Pq Oct 27, 2009
 .br
 .Nm man , apropos , whatis :
 .Ox 5.7 Pq August 27, 2014
 .It Fl o
 select pages by numbers
 .br
 .Nm nroff , troff :
 .At7
 .br
 .Nm groff :
 .g04
 .Pp
 force use of non-localized manual pages
 .br
 .Nm man :
 .Fx Pq June 7, 1999
 .Pp
 optimize index for speed and disk space
 .br
 .Nm makemandb :
 .Nx Pq Feb 7, 2012
 .It Fl P
 pass argument to postprocessor
 .br
 .Nm groff :
 .No groff-0.6 Pq Sep 14, 1990
 .Pp
 use specified pager
 .br
 .Nm man :
 .Eaton ;
 .Fx , No man-db , man-1.6
 .Pp
 turn on pager formatting
 .br
 .Nm apropos :
 .Nx Pq Apr 2, 2013
 .It Fl p
 preprocess with
 .Xr pic 1
 .br
 .Nm groff :
 .g04
 .Pp
 use the given list of preprocessors
 .br
 .Nm man :
 .Eaton ;
 .Fx , No man-db , man-1.6
 .Pp
 dry run, display commands instead of executing them
 .br
 .Nm catman :
 .Nx Pq July 27, 1993 ,
 .Fx Pq March 15, 1995 to May 18, 2002 ,
 .No Solaris 9-11
 .Pp
 print warnings when building
 .Xr mandoc.db 5
 .br
 .Nm makewhatis :
 .Ox 2.7 Pq April 23, 2000
 .Pp
 do not look for deleted manual pages
 .br
 .Nm mandb :
 .No man-db Pq June 28, 2001
 .Pp
 print the search path for manual pages
 .br
 .Nm man :
 .Nx Pq June 14 , 2011
 .Pp
 turn on pager formatting and pipe through pager
 .br
 .Nm apropos :
 .Nx Pq Feb 7, 2012
 .Pp
 .Bq obsolete hardware
 set phototypesetter point size
 .br
 .Nm troff :
 .At7
 .It Fl Q
 print only fatal error messages
 .br
 .Nm makemandb :
 .Nx Pq Aug 29, 2012
 .Pp
 quick mode of
 .Xr mandoc.db 5
 creation
 .br
 .Nm makewhatis :
 .Ox 5.6 Pq April 18, 2014
 .It Fl q
 invoke the simultaneous input-output mode of the .rd request
 .br
 .Nm nroff , troff :
 .At7
 .Pp
 issue no warnings
 .br
 .Nm manpath :
 .Eaton ;
 .Fx , No man-db
 .br
 .Nm mandb :
 .dbI
 .Pp
 print only warnings and errors, no status updates
 .br
 .Nm makemandb :
 .Nx Pq Aug 29, 2012
 .It Fl R
 postprocess with
 .Xr refer 1
 .br
 .Nm groff :
 .No groff-1.02 Pq June 2, 1991
 .Pp
 recode to the specified encoding
 .br
 .Nm man :
 .No man-db Pq Dec 31, 2007
 .It Fl r
 set number register
 .br
 .Nm nroff , troff :
 .At7
 .br
 .Nm groff :
 .g04
 .Pp
 scan for and remove junk files
 .br
 .Nm catman :
 .Fx Pq March 31, 1995
 .Pp
 set
 .Xr less 1
 prompt
 .br
 .Nm man :
 .No man-db-2.3.5 Pq April 21, 1995
 .Pp
 use regular expression matching
 .br
 .Nm apropos , whatis :
 .No man-db-2.3.5 Pq April 21, 1995
 .Pp
 turn off formatting
 .br
 .Nm apropos :
 .Nx Pq Feb 10, 2013
 .Pp
 check for formatting errors, do not display
 .br
 .Nm man :
 .No illumos , Solaris 9-11
 .It Fl S
 manual section search list
 .br
 .Nm man :
 .Eaton ;
 .Fx , No man-db , man-1.6
 .Pp
 safer mode
 .br
 .Nm groff :
 .No groff-1.10 Pq May 17, 1994
 .Pp
 restrict architecture
 .br
 .Nm man :
 .Ox 2.3 Pq March 9, 1998 ,
 .Nx Pq May 27, 2000
 .br
 .Nm apropos :
 .Ox 4.5 Pq Dec 24, 2008 ,
 .Nx Pq May 8, 2009
 .br
 .Nm whatis :
 .Ox 5.6 Pq April 18, 2014
 .br
 .Nm mandoc :
 .Ox 5.7 Pq August 27, 2014
 .It Fl s
 preprocess with
 .Xr soelim 1
 .br
 .Nm groff :
 .g04
 .Pp
 silent mode, do not echo commands
 .br
 .Nm catman :
 .Nx Pq April 26, 1994
 .Pp
 restrict section
 .br
 .Nm makewhatis :
 .man15g
 .br
 .Nm man :
 .Ox 2.3 Pq March 9, 1998 ,
 .Nx Pq June 12, 2000 ;
 .No illumos , Solaris 9-11
 .br
 .Nm apropos :
 .No man-db Pq Nov 16, 2003 ,
 .Ox 4.5 Pq Dec 24, 2008 ,
 .Nx Pq May 8, 2009 ;
 .No illumos
 .br
 .Nm whatis :
 .No man-db Pq Nov 16, 2003 ,
 .Ox 5.6 Pq April 18, 2014 ;
 .No illumos
 .br
 .Nm mandoc :
 .Ox 5.7 Pq August 27, 2014
 .Pp
 do not look for stray cats
 .br
 .Nm mandb :
 .dbI
 .Pp
 .Bq SysV compat, recommends Fl S
 manual section search list
 .br
 .Nm man :
 .No man-db Pq Jan 1, 2008
 .Pp
 .Bq superseded by Fl h
 display the SYNOPSIS lines only
 .br
 .Nm man :
 .PWB
 .Pp
 .Bq obsolete hardware
 pause before each page for paper manipulation
 .br
 .Nm roff :
 .At7
 .Pp
 .Bq obsolete hardware
 .Xr troff 1
 output mode, small format
 .br
 .Nm man :
 .At3 ,
 .At5
 .It Fl T
 select terminal output format
 .br
 .Nm nroff :
 .At7
 .br
 .Nm man :
 .At3 ,
 .At5 ,
 .dbI ,
 .Ox 5.7 Pq August 27, 2014
 .br
 .Nm groff :
 .g04
 .br
 .Nm mandoc :
 .Ox 4.8 Pq April 6, 2009
 .br
 .Nm apropos , whatis :
 .Ox 5.7 Pq August 27, 2014
 .Pp
 use UTF-8 for
 .Xr mandoc.db 5
 .br
 .Nm makewhatis :
 .Ox 5.6 Pq April 18, 2014
 .Pp
 .Bq superseded by Fl m
 use other macro package
 .br
 .Nm man , catman :
 .No Solaris 9-11
 .It Fl t
 .Xr troff 1
 output mode
 .br
 .Nm man :
 .PWB ,
 .At7 ,
 .Bx 2 Pq May 10, 1979 ,
 .At3 ,
 .At5 ,
 .Eaton ;
 .Fx , No man-db , man-1.6 , illumos , Solaris 9-11
 .br
 .Nm catman :
 .No Solaris 9-11
 .Pp
 preprocess with
 .Xr tbl 7
 .br
 .Nm groff :
 .g04
 .Pp
 check manual pages in the hierarchy
 .br
 .Nm mandb :
 .No man-db-1.3.12 to 1.3.17 Pq not before 1996, not after 2001
 .Pp
 check files for problems related to
 .Xr mandoc.db 5
 .br
 .Nm makewhatis :
 .Ox 2.7 Pq April 23, 2000
 .It Fl U
 unsafe mode
 .br
 .Nm groff :
 .No groff-1.12 Pq Dec 13, 1999
 .It Fl u
 update database
 .br
 .Nm makewhatis :
 .Pq not before 1992, not after 1995
 .Pp
 create user databases only
 .br
 .Nm mandb :
 .dbI
 .Pp
 update database cache (requires suid)
 .br
 .Nm man :
 .No before man-db-2.2a10 Pq before Dec 6, 1994
 .Pp
 remove files from
 .Xr mandoc.db 5
 .br
 .Nm makewhatis :
 .Ox 3.4 Pq July 9, 2003
 .It Fl V
 print the pipeline on stdout instead of executing it
 .br
 .Nm groff :
 .No groff-0.6 Pq Sep 2, 1990
 .Pp
 print version information
 .br
 .Nm man , apropos , whatis , mandb , catman , manpath :
 .dbI
 .It Fl v
 print version number
 .br
 .Nm groff :
 .g04
 .Pp
 verbose mode
 .br
 .Nm catman :
 .Fx Pq March 15, 1995
 .br
 .Nm makewhatis :
 .man15g
 .br
 .Nm apropos , whatis :
 .No man-db Pq Dec 29, 2002
 .Pp
 print the name of every parsed file
 .br
 .Nm makemandb :
 .Nx Pq Feb 7, 2012
 .Pp
 .Bq obsolete hardware
 produce output on the Versatec printer
 .br
 .Nm man :
 .PWB
 .It Fl W
 disable the named warning
 .br
 .Nm groff :
 .No groff-0.5 Pq August 14, 1990
 .Pp
 list pathnames without additional information
 .br
 .Nm man :
 .man15e
 .Pp
 list pathnames of cat files
 .br
 .Nm man :
 .No man-db Pq Aug 13, 2002
 .Pp
 minimum message level to display
 .br
 .Nm mandoc :
 .Ox 4.8 Pq April 6, 2009
 .br
 .Nm man , apropos , whatis :
 .Ox 5.7 Pq August 27, 2014
 .It Fl w
 list pathnames
 .br
 .Nm man :
 .At7 ,
 .At3 ,
 .At5 ,
 .Eaton ;
 .Ox , Fx , Nx , No man-db , man-1.6
 .br
 .Nm apropos , whatis , mandoc :
 .Ox 5.7 Pq August 27, 2014
 .Pp
 enable the named warning
 .br
 .Nm groff :
 .No groff-0.5 Pq August 14, 1990
 .Pp
 only create the
 .Xr whatis 1
 database
 .br
 .Nm catman :
 .Nx Pq July 27, 1993 ,
 .No Solaris 9-11
 .Pp
 use wildcard matching
 .br
 .Nm apropos , whatis :
 .No man-db-2.3.5 Pq April 21, 1995
 .Pp
 use manpath obtained from man --path
 .br
 .Nm makewhatis :
 .man15g
 .Pp
 update the
 .Xr whatis 1
 database
 .br
 .Nm man :
 .No illumos
 .Pp
 .Bq obsolete hardware
 wait until the phototypesetter is available
 .br
 .Nm troff :
 .At7
 .It Fl X
 display with
 .Xr gxditview 1
 .br
 .Nm groff :
 .No groff-1.06 Pq Sep 1, 1992
 .br
 .Nm man :
 .dbI
 .It Fl y
 use the non-compacted version of the macros
 .br
 .Nm man :
 .At3 ,
 .At5
 .It Fl Z
 do not run preprocessors
 .br
 .Nm groff :
 .g04
 .br
 .Nm man :
 .No man-db-2.2a5 Pq Nov 10, 1994
 .It Fl z
 suppress formatted output from
 .Xr troff 1 ,
 print only error messages
 .br
 .Nm groff :
 .g04
 .It Fl 7
 ASCII output mode
 .br
 .Nm man :
 .No man-db-2.3.5 Pq April 21, 1995
 .It Fl \&?
 print a help message and exit
 .br
 .Nm groff :
 .g04
 .br
 .Nm man , manpath :
 .Eaton ;
 .Fx , No man-db
 .br
 .Nm apropos , whatis , mandb , catman :
 .dbI
 .El
 .Pp
 Multi-letter options:
 .Bl -tag -width Ds
 .It Fl hp
 .Bq obsolete hardware
 output to a Hewlett Packard terminal
 .br
 .Nm man :
 .PWB
 .It Fl 12
 .Bq obsolete hardware
 use 12-pitch for certain terminals
 .br
 .Nm man :
 .At3 ,
 .At5
 .It Fl 450
 .Bq obsolete hardware
 output to a DASI 450 terminal
 .br
 .Nm man :
 .PWB
 .El
 .Pp
 In
 .At v3 ,
 .Xr man 1
 had no options.
 .br
 The syntax was:
 .Sy man Ar name Op Ar section
 .Pp
 In
 .At v4 ,
 .br
 the syntax changed to:
 .Sy man Oo Ar section Oc Op Ar name ...
 .Sh AUTHORS
 This information was assembled by
 .An Ingo Schwarze Aq Mt schwarze@openbsd.org
 using
 .Bl -bullet -compact
 .It
 the Unix Archive of the Unix Heritage Society
 .It
 the CSRG Archive CD-ROMs
 .It
-the FreeBSD SVN repository
+the
+.Fx
+SVN repository
 .It
-the OpenBSD CVS repository
+the
+.Ox
+CVS repository
 .It
-the NetBSD CVS repository
+the
+.Nx
+CVS repository
 .It
 the GNU roff (groff) git repository
 .It
 the 4.3BSD-Net/2 groff CHANGES file (Oct 1990 to March 1991)
 .It
 the 4.3BSD-Net/2 groff ChangeLog file (July 1990 to March 1991)
 .It
 the man-db CVS and git repositories (since April 2001)
 .It
 the man-db NEWS file (April 1995 to Dec 2016)
 .It
 the man-db ChangeLog-2013 file (Nov 1994 to Dec 2013)
 .It
 release tarballs man-1.5g (July 1998) to man-1.5p (Jan 2005),
 man-1.6 (June 2005), and man-1.6a to man-1.6g (Dec 2010)
 .It
 a makewhatis release tarball without version number from 1995
 .It
 the illumos manual pages on the WWW
 .It
 and Solaris 11, SunOS 5.10, and SunOS 5.9 machines at opencsw.org.
 .El
Index: vendor/mdocml/dist/man_html.c
===================================================================
--- vendor/mdocml/dist/man_html.c	(revision 321806)
+++ vendor/mdocml/dist/man_html.c	(revision 321807)
@@ -1,660 +1,670 @@
-/*	$Id: man_html.c,v 1.143 2017/06/08 12:54:58 schwarze Exp $ */
+/*	$Id: man_html.c,v 1.145 2017/06/25 11:42:02 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons 
  * Copyright (c) 2013, 2014, 2015, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc_aux.h"
+#include "mandoc.h"
 #include "roff.h"
 #include "man.h"
 #include "out.h"
 #include "html.h"
 #include "main.h"
 
 /* FIXME: have PD set the default vspace width. */
 
 #define	INDENT		  5
 
 #define	MAN_ARGS	  const struct roff_meta *man, \
 			  const struct roff_node *n, \
 			  struct html *h
 
 struct	htmlman {
 	int		(*pre)(MAN_ARGS);
 	int		(*post)(MAN_ARGS);
 };
 
 static	void		  print_bvspace(struct html *,
 				const struct roff_node *);
 static	void		  print_man_head(MAN_ARGS);
 static	void		  print_man_nodelist(MAN_ARGS);
 static	void		  print_man_node(MAN_ARGS);
 static	int		  fillmode(struct html *, int);
 static	int		  a2width(const struct roff_node *,
 				struct roffsu *);
 static	int		  man_B_pre(MAN_ARGS);
 static	int		  man_HP_pre(MAN_ARGS);
 static	int		  man_IP_pre(MAN_ARGS);
 static	int		  man_I_pre(MAN_ARGS);
 static	int		  man_OP_pre(MAN_ARGS);
 static	int		  man_PP_pre(MAN_ARGS);
 static	int		  man_RS_pre(MAN_ARGS);
 static	int		  man_SH_pre(MAN_ARGS);
 static	int		  man_SM_pre(MAN_ARGS);
 static	int		  man_SS_pre(MAN_ARGS);
 static	int		  man_UR_pre(MAN_ARGS);
 static	int		  man_alt_pre(MAN_ARGS);
 static	int		  man_ign_pre(MAN_ARGS);
 static	int		  man_in_pre(MAN_ARGS);
 static	void		  man_root_post(MAN_ARGS);
 static	void		  man_root_pre(MAN_ARGS);
 
 static	const struct htmlman __mans[MAN_MAX - MAN_TH] = {
 	{ NULL, NULL }, /* TH */
 	{ man_SH_pre, NULL }, /* SH */
 	{ man_SS_pre, NULL }, /* SS */
 	{ man_IP_pre, NULL }, /* TP */
 	{ man_PP_pre, NULL }, /* LP */
 	{ man_PP_pre, NULL }, /* PP */
 	{ man_PP_pre, NULL }, /* P */
 	{ man_IP_pre, NULL }, /* IP */
 	{ man_HP_pre, NULL }, /* HP */
 	{ man_SM_pre, NULL }, /* SM */
 	{ man_SM_pre, NULL }, /* SB */
 	{ man_alt_pre, NULL }, /* BI */
 	{ man_alt_pre, NULL }, /* IB */
 	{ man_alt_pre, NULL }, /* BR */
 	{ man_alt_pre, NULL }, /* RB */
 	{ NULL, NULL }, /* R */
 	{ man_B_pre, NULL }, /* B */
 	{ man_I_pre, NULL }, /* I */
 	{ man_alt_pre, NULL }, /* IR */
 	{ man_alt_pre, NULL }, /* RI */
 	{ NULL, NULL }, /* nf */
 	{ NULL, NULL }, /* fi */
 	{ NULL, NULL }, /* RE */
 	{ man_RS_pre, NULL }, /* RS */
 	{ man_ign_pre, NULL }, /* DT */
 	{ man_ign_pre, NULL }, /* UC */
 	{ man_ign_pre, NULL }, /* PD */
 	{ man_ign_pre, NULL }, /* AT */
 	{ man_in_pre, NULL }, /* in */
 	{ man_OP_pre, NULL }, /* OP */
 	{ NULL, NULL }, /* EX */
 	{ NULL, NULL }, /* EE */
 	{ man_UR_pre, NULL }, /* UR */
 	{ NULL, NULL }, /* UE */
+	{ man_UR_pre, NULL }, /* MT */
+	{ NULL, NULL }, /* ME */
 };
 static	const struct htmlman *const mans = __mans - MAN_TH;
 
 
 /*
  * Printing leading vertical space before a block.
  * This is used for the paragraph macros.
  * The rules are pretty simple, since there's very little nesting going
  * on here.  Basically, if we're the first within another block (SS/SH),
  * then don't emit vertical space.  If we are (RS), then do.  If not the
  * first, print it.
  */
 static void
 print_bvspace(struct html *h, const struct roff_node *n)
 {
 
 	if (n->body && n->body->child)
 		if (n->body->child->type == ROFFT_TBL)
 			return;
 
 	if (n->parent->type == ROFFT_ROOT || n->parent->tok != MAN_RS)
 		if (NULL == n->prev)
 			return;
 
 	print_paragraph(h);
 }
 
 void
 html_man(void *arg, const struct roff_man *man)
 {
 	struct html	*h;
 	struct tag	*t;
 
 	h = (struct html *)arg;
 
 	if ((h->oflags & HTML_FRAGMENT) == 0) {
 		print_gen_decls(h);
 		print_otag(h, TAG_HTML, "");
 		t = print_otag(h, TAG_HEAD, "");
 		print_man_head(&man->meta, man->first, h);
 		print_tagq(h, t);
 		print_otag(h, TAG_BODY, "");
 	}
 
 	man_root_pre(&man->meta, man->first, h);
 	t = print_otag(h, TAG_DIV, "c", "manual-text");
 	print_man_nodelist(&man->meta, man->first->child, h);
 	print_tagq(h, t);
 	man_root_post(&man->meta, man->first, h);
 	print_tagq(h, NULL);
 }
 
 static void
 print_man_head(MAN_ARGS)
 {
 	char	*cp;
 
 	print_gen_head(h);
 	mandoc_asprintf(&cp, "%s(%s)", man->title, man->msec);
 	print_otag(h, TAG_TITLE, "");
 	print_text(h, cp);
 	free(cp);
 }
 
 static void
 print_man_nodelist(MAN_ARGS)
 {
 
 	while (n != NULL) {
 		print_man_node(man, n, h);
 		n = n->next;
 	}
 }
 
 static void
 print_man_node(MAN_ARGS)
 {
 	static int	 want_fillmode = MAN_fi;
 	static int	 save_fillmode;
 
 	struct tag	*t;
 	int		 child;
 
 	/*
 	 * Handle fill mode switch requests up front,
 	 * they would just cause trouble in the subsequent code.
 	 */
 
 	switch (n->tok) {
 	case MAN_nf:
 	case MAN_EX:
 		want_fillmode = MAN_nf;
 		return;
 	case MAN_fi:
 	case MAN_EE:
 		want_fillmode = MAN_fi;
 		if (fillmode(h, 0) == MAN_fi)
 			print_otag(h, TAG_BR, "");
 		return;
 	default:
 		break;
 	}
 
 	/* Set up fill mode for the upcoming node. */
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		save_fillmode = 0;
 		/* Some block macros suspend or cancel .nf. */
 		switch (n->tok) {
 		case MAN_TP:  /* Tagged paragraphs		*/
 		case MAN_IP:  /* temporarily disable .nf	*/
 		case MAN_HP:  /* for the head.			*/
 			save_fillmode = want_fillmode;
 			/* FALLTHROUGH */
 		case MAN_SH:  /* Section headers		*/
 		case MAN_SS:  /* permanently cancel .nf.	*/
 			want_fillmode = MAN_fi;
 			/* FALLTHROUGH */
 		case MAN_PP:  /* These have no head.		*/
 		case MAN_LP:  /* They will simply		*/
 		case MAN_P:   /* reopen .nf in the body.	*/
 		case MAN_RS:
 		case MAN_UR:
+		case MAN_MT:
 			fillmode(h, MAN_fi);
 			break;
 		default:
 			break;
 		}
 		break;
 	case ROFFT_TBL:
 		fillmode(h, MAN_fi);
 		break;
 	case ROFFT_ELEM:
 		/*
 		 * Some in-line macros produce tags and/or text
 		 * in the handler, so they require fill mode to be
 		 * configured up front just like for text nodes.
 		 * For the others, keep the traditional approach
 		 * of doing the same, for now.
 		 */
 		fillmode(h, want_fillmode);
 		break;
 	case ROFFT_TEXT:
 		if (fillmode(h, want_fillmode) == MAN_fi &&
 		    want_fillmode == MAN_fi &&
 		    n->flags & NODE_LINE && *n->string == ' ' &&
 		    (h->flags & HTML_NONEWLINE) == 0)
 			print_otag(h, TAG_BR, "");
 		if (*n->string != '\0')
 			break;
 		print_paragraph(h);
 		return;
 	default:
 		break;
 	}
 
 	/* Produce output for this node. */
 
 	child = 1;
 	switch (n->type) {
 	case ROFFT_TEXT:
 		t = h->tag;
 		print_text(h, n->string);
 		break;
 	case ROFFT_EQN:
 		t = h->tag;
 		print_eqn(h, n->eqn);
 		break;
 	case ROFFT_TBL:
 		/*
 		 * This will take care of initialising all of the table
 		 * state data for the first table, then tearing it down
 		 * for the last one.
 		 */
 		print_tbl(h, n->span);
 		return;
 	default:
 		/*
 		 * Close out scope of font prior to opening a macro
 		 * scope.
 		 */
 		if (HTMLFONT_NONE != h->metac) {
 			h->metal = h->metac;
 			h->metac = HTMLFONT_NONE;
 		}
 
 		/*
 		 * Close out the current table, if it's open, and unset
 		 * the "meta" table state.  This will be reopened on the
 		 * next table element.
 		 */
 		if (h->tblt)
 			print_tblclose(h);
 
 		t = h->tag;
 		if (n->tok < ROFF_MAX) {
 			roff_html_pre(h, n);
 			child = 0;
 			break;
 		}
 
 		assert(n->tok >= MAN_TH && n->tok < MAN_MAX);
 		if (mans[n->tok].pre)
 			child = (*mans[n->tok].pre)(man, n, h);
 
 		/* Some block macros resume .nf in the body. */
 		if (save_fillmode && n->type == ROFFT_BODY)
 			want_fillmode = save_fillmode;
 
 		break;
 	}
 
 	if (child && n->child)
 		print_man_nodelist(man, n->child, h);
 
 	/* This will automatically close out any font scope. */
 	print_stagq(h, t);
 
 	if (fillmode(h, 0) == MAN_nf &&
 	    n->next != NULL && n->next->flags & NODE_LINE)
 		print_endline(h);
 }
 
 /*
  * MAN_nf switches to no-fill mode, MAN_fi to fill mode.
  * Other arguments do not switch.
  * The old mode is returned.
  */
 static int
 fillmode(struct html *h, int want)
 {
 	struct tag	*pre;
 	int		 had;
 
 	for (pre = h->tag; pre != NULL; pre = pre->next)
 		if (pre->tag == TAG_PRE)
 			break;
 
 	had = pre == NULL ? MAN_fi : MAN_nf;
 
 	if (want && want != had) {
 		if (want == MAN_nf)
 			print_otag(h, TAG_PRE, "");
 		else
 			print_tagq(h, pre);
 	}
 	return had;
 }
 
 static int
 a2width(const struct roff_node *n, struct roffsu *su)
 {
 	if (n->type != ROFFT_TEXT)
 		return 0;
 	return a2roffsu(n->string, su, SCALE_EN) != NULL;
 }
 
 static void
 man_root_pre(MAN_ARGS)
 {
 	struct tag	*t, *tt;
 	char		*title;
 
 	assert(man->title);
 	assert(man->msec);
 	mandoc_asprintf(&title, "%s(%s)", man->title, man->msec);
 
 	t = print_otag(h, TAG_TABLE, "c", "head");
 	tt = print_otag(h, TAG_TR, "");
 
 	print_otag(h, TAG_TD, "c", "head-ltitle");
 	print_text(h, title);
 	print_stagq(h, tt);
 
 	print_otag(h, TAG_TD, "c", "head-vol");
 	if (NULL != man->vol)
 		print_text(h, man->vol);
 	print_stagq(h, tt);
 
 	print_otag(h, TAG_TD, "c", "head-rtitle");
 	print_text(h, title);
 	print_tagq(h, t);
 	free(title);
 }
 
 static void
 man_root_post(MAN_ARGS)
 {
 	struct tag	*t, *tt;
 
 	t = print_otag(h, TAG_TABLE, "c", "foot");
 	tt = print_otag(h, TAG_TR, "");
 
 	print_otag(h, TAG_TD, "c", "foot-date");
 	print_text(h, man->date);
 	print_stagq(h, tt);
 
 	print_otag(h, TAG_TD, "c", "foot-os");
 	if (man->os)
 		print_text(h, man->os);
 	print_tagq(h, t);
 }
 
 static int
 man_SH_pre(MAN_ARGS)
 {
 	char	*id;
 
 	if (n->type == ROFFT_HEAD) {
 		id = html_make_id(n);
 		print_otag(h, TAG_H1, "cTi", "Sh", id);
 		if (id != NULL)
 			print_otag(h, TAG_A, "chR", "selflink", id);
 		free(id);
 	}
 	return 1;
 }
 
 static int
 man_alt_pre(MAN_ARGS)
 {
 	const struct roff_node	*nn;
 	int		 i;
 	enum htmltag	 fp;
 	struct tag	*t;
 
 	for (i = 0, nn = n->child; nn; nn = nn->next, i++) {
 		switch (n->tok) {
 		case MAN_BI:
 			fp = i % 2 ? TAG_I : TAG_B;
 			break;
 		case MAN_IB:
 			fp = i % 2 ? TAG_B : TAG_I;
 			break;
 		case MAN_RI:
 			fp = i % 2 ? TAG_I : TAG_MAX;
 			break;
 		case MAN_IR:
 			fp = i % 2 ? TAG_MAX : TAG_I;
 			break;
 		case MAN_BR:
 			fp = i % 2 ? TAG_MAX : TAG_B;
 			break;
 		case MAN_RB:
 			fp = i % 2 ? TAG_B : TAG_MAX;
 			break;
 		default:
 			abort();
 		}
 
 		if (i)
 			h->flags |= HTML_NOSPACE;
 
 		if (fp != TAG_MAX)
 			t = print_otag(h, fp, "");
 
 		print_text(h, nn->string);
 
 		if (fp != TAG_MAX)
 			print_tagq(h, t);
 	}
 	return 0;
 }
 
 static int
 man_SM_pre(MAN_ARGS)
 {
 	print_otag(h, TAG_SMALL, "");
 	if (MAN_SB == n->tok)
 		print_otag(h, TAG_B, "");
 	return 1;
 }
 
 static int
 man_SS_pre(MAN_ARGS)
 {
 	char	*id;
 
 	if (n->type == ROFFT_HEAD) {
 		id = html_make_id(n);
 		print_otag(h, TAG_H2, "cTi", "Ss", id);
 		if (id != NULL)
 			print_otag(h, TAG_A, "chR", "selflink", id);
 		free(id);
 	}
 	return 1;
 }
 
 static int
 man_PP_pre(MAN_ARGS)
 {
 
 	if (n->type == ROFFT_HEAD)
 		return 0;
 	else if (n->type == ROFFT_BLOCK)
 		print_bvspace(h, n);
 
 	return 1;
 }
 
 static int
 man_IP_pre(MAN_ARGS)
 {
 	const struct roff_node	*nn;
 
 	if (n->type == ROFFT_BODY) {
 		print_otag(h, TAG_DD, "c", "It-tag");
 		return 1;
 	} else if (n->type != ROFFT_HEAD) {
 		print_otag(h, TAG_DL, "c", "Bl-tag");
 		return 1;
 	}
 
 	/* FIXME: width specification. */
 
 	print_otag(h, TAG_DT, "c", "It-tag");
 
 	/* For IP, only print the first header element. */
 
 	if (MAN_IP == n->tok && n->child)
 		print_man_node(man, n->child, h);
 
 	/* For TP, only print next-line header elements. */
 
 	if (MAN_TP == n->tok) {
 		nn = n->child;
 		while (NULL != nn && 0 == (NODE_LINE & nn->flags))
 			nn = nn->next;
 		while (NULL != nn) {
 			print_man_node(man, nn, h);
 			nn = nn->next;
 		}
 	}
 
 	return 0;
 }
 
 static int
 man_HP_pre(MAN_ARGS)
 {
 	struct roffsu	 sum, sui;
 	const struct roff_node *np;
 
 	if (n->type == ROFFT_HEAD)
 		return 0;
 	else if (n->type != ROFFT_BLOCK)
 		return 1;
 
 	np = n->head->child;
 
 	if (np == NULL || !a2width(np, &sum))
 		SCALE_HS_INIT(&sum, INDENT);
 
 	sui.unit = sum.unit;
 	sui.scale = -sum.scale;
 
 	print_bvspace(h, n);
 	print_otag(h, TAG_DIV, "csului", "Pp", &sum, &sui);
 	return 1;
 }
 
 static int
 man_OP_pre(MAN_ARGS)
 {
 	struct tag	*tt;
 
 	print_text(h, "[");
 	h->flags |= HTML_NOSPACE;
 	tt = print_otag(h, TAG_SPAN, "c", "Op");
 
 	if (NULL != (n = n->child)) {
 		print_otag(h, TAG_B, "");
 		print_text(h, n->string);
 	}
 
 	print_stagq(h, tt);
 
 	if (NULL != n && NULL != n->next) {
 		print_otag(h, TAG_I, "");
 		print_text(h, n->next->string);
 	}
 
 	print_stagq(h, tt);
 	h->flags |= HTML_NOSPACE;
 	print_text(h, "]");
 	return 0;
 }
 
 static int
 man_B_pre(MAN_ARGS)
 {
 	print_otag(h, TAG_B, "");
 	return 1;
 }
 
 static int
 man_I_pre(MAN_ARGS)
 {
 	print_otag(h, TAG_I, "");
 	return 1;
 }
 
 static int
 man_in_pre(MAN_ARGS)
 {
 	print_otag(h, TAG_BR, "");
 	return 0;
 }
 
 static int
 man_ign_pre(MAN_ARGS)
 {
 
 	return 0;
 }
 
 static int
 man_RS_pre(MAN_ARGS)
 {
 	struct roffsu	 su;
 
 	if (n->type == ROFFT_HEAD)
 		return 0;
 	else if (n->type == ROFFT_BODY)
 		return 1;
 
 	SCALE_HS_INIT(&su, INDENT);
 	if (n->head->child)
 		a2width(n->head->child, &su);
 
 	print_otag(h, TAG_DIV, "sul", &su);
 	return 1;
 }
 
 static int
 man_UR_pre(MAN_ARGS)
 {
+	char *cp;
 	n = n->child;
 	assert(n->type == ROFFT_HEAD);
 	if (n->child != NULL) {
 		assert(n->child->type == ROFFT_TEXT);
-		print_otag(h, TAG_A, "cTh", "Lk", n->child->string);
+		if (n->tok == MAN_MT) {
+			mandoc_asprintf(&cp, "mailto:%s", n->child->string);
+			print_otag(h, TAG_A, "cTh", "Mt", cp);
+			free(cp);
+		} else
+			print_otag(h, TAG_A, "cTh", "Lk", n->child->string);
 	}
 
 	assert(n->next->type == ROFFT_BODY);
 	if (n->next->child != NULL)
 		n = n->next;
 
 	print_man_nodelist(man, n->child, h);
 
 	return 0;
 }
Index: vendor/mdocml/dist/man_macro.c
===================================================================
--- vendor/mdocml/dist/man_macro.c	(revision 321806)
+++ vendor/mdocml/dist/man_macro.c	(revision 321807)
@@ -1,404 +1,422 @@
-/*	$Id: man_macro.c,v 1.120 2017/05/05 15:17:32 schwarze Exp $ */
+/*	$Id: man_macro.c,v 1.123 2017/06/25 11:45:37 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons 
  * Copyright (c) 2012-2015, 2017 Ingo Schwarze 
  * Copyright (c) 2013 Franco Fichtner 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc.h"
 #include "roff.h"
 #include "man.h"
 #include "libmandoc.h"
 #include "roff_int.h"
 #include "libman.h"
 
 static	void		 blk_close(MACRO_PROT_ARGS);
 static	void		 blk_exp(MACRO_PROT_ARGS);
 static	void		 blk_imp(MACRO_PROT_ARGS);
 static	void		 in_line_eoln(MACRO_PROT_ARGS);
 static	int		 man_args(struct roff_man *, int,
 				int *, char *, char **);
 static	void		 rew_scope(struct roff_man *, enum roff_tok);
 
 const	struct man_macro __man_macros[MAN_MAX - MAN_TH] = {
 	{ in_line_eoln, MAN_BSCOPE }, /* TH */
 	{ blk_imp, MAN_BSCOPE | MAN_SCOPED }, /* SH */
 	{ blk_imp, MAN_BSCOPE | MAN_SCOPED }, /* SS */
 	{ blk_imp, MAN_BSCOPE | MAN_SCOPED }, /* TP */
 	{ blk_imp, MAN_BSCOPE }, /* LP */
 	{ blk_imp, MAN_BSCOPE }, /* PP */
 	{ blk_imp, MAN_BSCOPE }, /* P */
 	{ blk_imp, MAN_BSCOPE }, /* IP */
 	{ blk_imp, MAN_BSCOPE }, /* HP */
 	{ in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* SM */
 	{ in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* SB */
 	{ in_line_eoln, 0 }, /* BI */
 	{ in_line_eoln, 0 }, /* IB */
 	{ in_line_eoln, 0 }, /* BR */
 	{ in_line_eoln, 0 }, /* RB */
 	{ in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* R */
 	{ in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* B */
 	{ in_line_eoln, MAN_SCOPED | MAN_JOIN }, /* I */
 	{ in_line_eoln, 0 }, /* IR */
 	{ in_line_eoln, 0 }, /* RI */
 	{ in_line_eoln, MAN_NSCOPED }, /* nf */
 	{ in_line_eoln, MAN_NSCOPED }, /* fi */
 	{ blk_close, MAN_BSCOPE }, /* RE */
 	{ blk_exp, MAN_BSCOPE }, /* RS */
 	{ in_line_eoln, 0 }, /* DT */
 	{ in_line_eoln, 0 }, /* UC */
 	{ in_line_eoln, MAN_NSCOPED }, /* PD */
 	{ in_line_eoln, 0 }, /* AT */
-	{ in_line_eoln, 0 }, /* in */
+	{ in_line_eoln, MAN_NSCOPED }, /* in */
 	{ in_line_eoln, 0 }, /* OP */
 	{ in_line_eoln, MAN_BSCOPE }, /* EX */
 	{ in_line_eoln, MAN_BSCOPE }, /* EE */
 	{ blk_exp, MAN_BSCOPE }, /* UR */
 	{ blk_close, MAN_BSCOPE }, /* UE */
+	{ blk_exp, MAN_BSCOPE }, /* MT */
+	{ blk_close, MAN_BSCOPE }, /* ME */
 };
 const	struct man_macro *const man_macros = __man_macros - MAN_TH;
 
 
 void
 man_unscope(struct roff_man *man, const struct roff_node *to)
 {
 	struct roff_node *n;
 
 	to = to->parent;
 	n = man->last;
 	while (n != to) {
 
 		/* Reached the end of the document? */
 
 		if (to == NULL && ! (n->flags & NODE_VALID)) {
 			if (man->flags & (MAN_BLINE | MAN_ELINE) &&
 			    man_macros[n->tok].flags & MAN_SCOPED) {
 				mandoc_vmsg(MANDOCERR_BLK_LINE,
 				    man->parse, n->line, n->pos,
 				    "EOF breaks %s", roff_name[n->tok]);
 				if (man->flags & MAN_ELINE)
 					man->flags &= ~MAN_ELINE;
 				else {
 					assert(n->type == ROFFT_HEAD);
 					n = n->parent;
 					man->flags &= ~MAN_BLINE;
 				}
 				man->last = n;
 				n = n->parent;
 				roff_node_delete(man, man->last);
 				continue;
 			}
 			if (n->type == ROFFT_BLOCK &&
 			    man_macros[n->tok].fp == blk_exp)
 				mandoc_msg(MANDOCERR_BLK_NOEND,
 				    man->parse, n->line, n->pos,
 				    roff_name[n->tok]);
 		}
 
 		/*
 		 * We might delete the man->last node
 		 * in the post-validation phase.
 		 * Save a pointer to the parent such that
 		 * we know where to continue the iteration.
 		 */
 
 		man->last = n;
 		n = n->parent;
 		man->last->flags |= NODE_VALID;
 	}
 
 	/*
 	 * If we ended up at the parent of the node we were
 	 * supposed to rewind to, that means the target node
 	 * got deleted, so add the next node we parse as a child
 	 * of the parent instead of as a sibling of the target.
 	 */
 
 	man->next = (man->last == to) ?
 	    ROFF_NEXT_CHILD : ROFF_NEXT_SIBLING;
 }
 
 /*
  * Rewinding entails ascending the parse tree until a coherent point,
  * for example, the `SH' macro will close out any intervening `SS'
  * scopes.  When a scope is closed, it must be validated and actioned.
  */
 static void
 rew_scope(struct roff_man *man, enum roff_tok tok)
 {
 	struct roff_node *n;
 
 	/* Preserve empty paragraphs before RS. */
 
 	n = man->last;
 	if (tok == MAN_RS && n->child == NULL &&
 	    (n->tok == MAN_P || n->tok == MAN_PP || n->tok == MAN_LP))
 		return;
 
 	for (;;) {
 		if (n->type == ROFFT_ROOT)
 			return;
 		if (n->flags & NODE_VALID) {
 			n = n->parent;
 			continue;
 		}
 		if (n->type != ROFFT_BLOCK) {
 			if (n->parent->type == ROFFT_ROOT) {
 				man_unscope(man, n);
 				return;
 			} else {
 				n = n->parent;
 				continue;
 			}
 		}
 		if (tok != MAN_SH && (n->tok == MAN_SH ||
 		    (tok != MAN_SS && (n->tok == MAN_SS ||
 		     man_macros[n->tok].fp == blk_exp))))
 			return;
 		man_unscope(man, n);
 		n = man->last;
 	}
 }
 
 
 /*
  * Close out a generic explicit macro.
  */
 void
 blk_close(MACRO_PROT_ARGS)
 {
 	enum roff_tok		 ntok;
 	const struct roff_node	*nn;
 	char			*p;
 	int			 nrew, target;
 
 	nrew = 1;
 	switch (tok) {
 	case MAN_RE:
 		ntok = MAN_RS;
 		if ( ! man_args(man, line, pos, buf, &p))
 			break;
 		for (nn = man->last->parent; nn; nn = nn->parent)
 			if (nn->tok == ntok && nn->type == ROFFT_BLOCK)
 				nrew++;
 		target = strtol(p, &p, 10);
 		if (*p != '\0')
 			mandoc_vmsg(MANDOCERR_ARG_EXCESS, man->parse,
 			    line, p - buf, "RE ... %s", p);
 		if (target == 0)
 			target = 1;
 		nrew -= target;
 		if (nrew < 1) {
 			mandoc_vmsg(MANDOCERR_RE_NOTOPEN, man->parse,
 			    line, ppos, "RE %d", target);
 			return;
 		}
 		break;
 	case MAN_UE:
 		ntok = MAN_UR;
 		break;
+	case MAN_ME:
+		ntok = MAN_MT;
+		break;
 	default:
 		abort();
 	}
 
 	for (nn = man->last->parent; nn; nn = nn->parent)
 		if (nn->tok == ntok && nn->type == ROFFT_BLOCK && ! --nrew)
 			break;
 
 	if (nn == NULL) {
 		mandoc_msg(MANDOCERR_BLK_NOTOPEN, man->parse,
 		    line, ppos, roff_name[tok]);
 		rew_scope(man, MAN_PP);
 	} else {
 		line = man->last->line;
 		ppos = man->last->pos;
 		ntok = man->last->tok;
 		man_unscope(man, nn);
 
+		if (tok == MAN_RE && nn->head->aux > 0)
+			roff_setreg(man->roff, "an-margin",
+			    nn->head->aux, '-');
+
 		/* Move a trailing paragraph behind the block. */
 
 		if (ntok == MAN_LP || ntok == MAN_PP || ntok == MAN_P) {
 			*pos = strlen(buf);
 			blk_imp(man, ntok, line, ppos, pos, buf);
 		}
 	}
 }
 
 void
 blk_exp(MACRO_PROT_ARGS)
 {
 	struct roff_node *head;
 	char		*p;
 	int		 la;
 
 	rew_scope(man, tok);
 	roff_block_alloc(man, line, ppos, tok);
 	head = roff_head_alloc(man, line, ppos, tok);
 
 	la = *pos;
-	if (man_args(man, line, pos, buf, &p))
+	if (man_args(man, line, pos, buf, &p)) {
 		roff_word_alloc(man, line, la, p);
+		if (tok == MAN_RS) {
+			if (roff_getreg(man->roff, "an-margin") == 0)
+				roff_setreg(man->roff, "an-margin",
+				    7 * 24, '=');
+			if ((head->aux = strtod(p, NULL) * 24.0) > 0)
+				roff_setreg(man->roff, "an-margin",
+				    head->aux, '+');
+		}
+	}
 
 	if (buf[*pos] != '\0')
 		mandoc_vmsg(MANDOCERR_ARG_EXCESS, man->parse, line,
 		    *pos, "%s ... %s", roff_name[tok], buf + *pos);
 
 	man_unscope(man, head);
 	roff_body_alloc(man, line, ppos, tok);
 }
 
 /*
  * Parse an implicit-block macro.  These contain a ROFFT_HEAD and a
  * ROFFT_BODY contained within a ROFFT_BLOCK.  Rules for closing out other
  * scopes, such as `SH' closing out an `SS', are defined in the rew
  * routines.
  */
 void
 blk_imp(MACRO_PROT_ARGS)
 {
 	int		 la;
 	char		*p;
 	struct roff_node *n;
 
 	rew_scope(man, tok);
 	n = roff_block_alloc(man, line, ppos, tok);
 	if (n->tok == MAN_SH || n->tok == MAN_SS)
 		man->flags &= ~MAN_LITERAL;
 	n = roff_head_alloc(man, line, ppos, tok);
 
 	/* Add line arguments. */
 
 	for (;;) {
 		la = *pos;
 		if ( ! man_args(man, line, pos, buf, &p))
 			break;
 		roff_word_alloc(man, line, la, p);
 	}
 
 	/*
 	 * For macros having optional next-line scope,
 	 * keep the head open if there were no arguments.
 	 * For `TP', always keep the head open.
 	 */
 
 	if (man_macros[tok].flags & MAN_SCOPED &&
 	    (tok == MAN_TP || n == man->last)) {
 		man->flags |= MAN_BLINE;
 		return;
 	}
 
 	/* Close out the head and open the body. */
 
 	man_unscope(man, n);
 	roff_body_alloc(man, line, ppos, tok);
 }
 
 void
 in_line_eoln(MACRO_PROT_ARGS)
 {
 	int		 la;
 	char		*p;
 	struct roff_node *n;
 
 	roff_elem_alloc(man, line, ppos, tok);
 	n = man->last;
 
 	for (;;) {
 		if (buf[*pos] != '\0' && (tok == MAN_fi || tok == MAN_nf)) {
 			mandoc_vmsg(MANDOCERR_ARG_SKIP,
 			    man->parse, line, *pos, "%s %s",
 			    roff_name[tok], buf + *pos);
 			break;
 		}
 		if (buf[*pos] != '\0' && man->last != n && tok == MAN_PD) {
 			mandoc_vmsg(MANDOCERR_ARG_EXCESS,
 			    man->parse, line, *pos, "%s ... %s",
 			    roff_name[tok], buf + *pos);
 			break;
 		}
 		la = *pos;
 		if ( ! man_args(man, line, pos, buf, &p))
 			break;
 		if (man_macros[tok].flags & MAN_JOIN &&
 		    man->last->type == ROFFT_TEXT)
 			roff_word_append(man, p);
 		else
 			roff_word_alloc(man, line, la, p);
 	}
 
 	/*
 	 * Append NODE_EOS in case the last snipped argument
 	 * ends with a dot, e.g. `.IR syslog (3).'
 	 */
 
 	if (n != man->last &&
 	    mandoc_eos(man->last->string, strlen(man->last->string)))
 		man->last->flags |= NODE_EOS;
 
 	/*
 	 * If no arguments are specified and this is MAN_SCOPED (i.e.,
 	 * next-line scoped), then set our mode to indicate that we're
 	 * waiting for terms to load into our context.
 	 */
 
 	if (n == man->last && man_macros[tok].flags & MAN_SCOPED) {
 		assert( ! (man_macros[tok].flags & MAN_NSCOPED));
 		man->flags |= MAN_ELINE;
 		return;
 	}
 
 	assert(man->last->type != ROFFT_ROOT);
 	man->next = ROFF_NEXT_SIBLING;
 
 	/* Rewind our element scope. */
 
 	for ( ; man->last; man->last = man->last->parent) {
 		man_state(man, man->last);
 		if (man->last == n)
 			break;
 	}
 }
 
 void
 man_endparse(struct roff_man *man)
 {
 
 	man_unscope(man, man->first);
 	man->flags &= ~MAN_LITERAL;
 }
 
 static int
 man_args(struct roff_man *man, int line, int *pos, char *buf, char **v)
 {
 	char	 *start;
 
 	assert(*pos);
 	*v = start = buf + *pos;
 	assert(' ' != *start);
 
 	if ('\0' == *start)
 		return 0;
 
 	*v = mandoc_getarg(man->parse, v, line, pos);
 	return 1;
 }
Index: vendor/mdocml/dist/man_term.c
===================================================================
--- vendor/mdocml/dist/man_term.c	(revision 321806)
+++ vendor/mdocml/dist/man_term.c	(revision 321807)
@@ -1,1096 +1,1101 @@
-/*	$Id: man_term.c,v 1.204 2017/06/08 12:54:58 schwarze Exp $ */
+/*	$Id: man_term.c,v 1.208 2017/06/25 11:42:02 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2012 Kristaps Dzonsons 
  * Copyright (c) 2010-2015, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc_aux.h"
 #include "mandoc.h"
 #include "roff.h"
 #include "man.h"
 #include "out.h"
 #include "term.h"
 #include "main.h"
 
 #define	MAXMARGINS	  64 /* maximum number of indented scopes */
 
 struct	mtermp {
 	int		  fl;
 #define	MANT_LITERAL	 (1 << 0)
 	int		  lmargin[MAXMARGINS]; /* margins (incl. vis. page) */
 	int		  lmargincur; /* index of current margin */
 	int		  lmarginsz; /* actual number of nested margins */
 	size_t		  offset; /* default offset to visible page */
 	int		  pardist; /* vert. space before par., unit: [v] */
 };
 
 #define	DECL_ARGS	  struct termp *p, \
 			  struct mtermp *mt, \
 			  struct roff_node *n, \
 			  const struct roff_meta *meta
 
 struct	termact {
 	int		(*pre)(DECL_ARGS);
 	void		(*post)(DECL_ARGS);
 	int		  flags;
 #define	MAN_NOTEXT	 (1 << 0) /* Never has text children. */
 };
 
 static	void		  print_man_nodelist(DECL_ARGS);
 static	void		  print_man_node(DECL_ARGS);
 static	void		  print_man_head(struct termp *,
 				const struct roff_meta *);
 static	void		  print_man_foot(struct termp *,
 				const struct roff_meta *);
 static	void		  print_bvspace(struct termp *,
 				const struct roff_node *, int);
 
 static	int		  pre_B(DECL_ARGS);
 static	int		  pre_DT(DECL_ARGS);
 static	int		  pre_HP(DECL_ARGS);
 static	int		  pre_I(DECL_ARGS);
 static	int		  pre_IP(DECL_ARGS);
 static	int		  pre_OP(DECL_ARGS);
 static	int		  pre_PD(DECL_ARGS);
 static	int		  pre_PP(DECL_ARGS);
 static	int		  pre_RS(DECL_ARGS);
 static	int		  pre_SH(DECL_ARGS);
 static	int		  pre_SS(DECL_ARGS);
 static	int		  pre_TP(DECL_ARGS);
 static	int		  pre_UR(DECL_ARGS);
 static	int		  pre_alternate(DECL_ARGS);
 static	int		  pre_ign(DECL_ARGS);
 static	int		  pre_in(DECL_ARGS);
 static	int		  pre_literal(DECL_ARGS);
 
 static	void		  post_IP(DECL_ARGS);
 static	void		  post_HP(DECL_ARGS);
 static	void		  post_RS(DECL_ARGS);
 static	void		  post_SH(DECL_ARGS);
 static	void		  post_SS(DECL_ARGS);
 static	void		  post_TP(DECL_ARGS);
 static	void		  post_UR(DECL_ARGS);
 
 static	const struct termact __termacts[MAN_MAX - MAN_TH] = {
 	{ NULL, NULL, 0 }, /* TH */
 	{ pre_SH, post_SH, 0 }, /* SH */
 	{ pre_SS, post_SS, 0 }, /* SS */
 	{ pre_TP, post_TP, 0 }, /* TP */
 	{ pre_PP, NULL, 0 }, /* LP */
 	{ pre_PP, NULL, 0 }, /* PP */
 	{ pre_PP, NULL, 0 }, /* P */
 	{ pre_IP, post_IP, 0 }, /* IP */
 	{ pre_HP, post_HP, 0 }, /* HP */
 	{ NULL, NULL, 0 }, /* SM */
 	{ pre_B, NULL, 0 }, /* SB */
 	{ pre_alternate, NULL, 0 }, /* BI */
 	{ pre_alternate, NULL, 0 }, /* IB */
 	{ pre_alternate, NULL, 0 }, /* BR */
 	{ pre_alternate, NULL, 0 }, /* RB */
 	{ NULL, NULL, 0 }, /* R */
 	{ pre_B, NULL, 0 }, /* B */
 	{ pre_I, NULL, 0 }, /* I */
 	{ pre_alternate, NULL, 0 }, /* IR */
 	{ pre_alternate, NULL, 0 }, /* RI */
 	{ pre_literal, NULL, 0 }, /* nf */
 	{ pre_literal, NULL, 0 }, /* fi */
 	{ NULL, NULL, 0 }, /* RE */
 	{ pre_RS, post_RS, 0 }, /* RS */
 	{ pre_DT, NULL, 0 }, /* DT */
 	{ pre_ign, NULL, MAN_NOTEXT }, /* UC */
 	{ pre_PD, NULL, MAN_NOTEXT }, /* PD */
 	{ pre_ign, NULL, 0 }, /* AT */
 	{ pre_in, NULL, MAN_NOTEXT }, /* in */
 	{ pre_OP, NULL, 0 }, /* OP */
 	{ pre_literal, NULL, 0 }, /* EX */
 	{ pre_literal, NULL, 0 }, /* EE */
 	{ pre_UR, post_UR, 0 }, /* UR */
 	{ NULL, NULL, 0 }, /* UE */
+	{ pre_UR, post_UR, 0 }, /* MT */
+	{ NULL, NULL, 0 }, /* ME */
 };
 static	const struct termact *termacts = __termacts - MAN_TH;
 
 
 void
 terminal_man(void *arg, const struct roff_man *man)
 {
 	struct termp		*p;
 	struct roff_node	*n;
 	struct mtermp		 mt;
 	size_t			 save_defindent;
 
 	p = (struct termp *)arg;
+	save_defindent = p->defindent;
+	if (p->synopsisonly == 0 && p->defindent == 0)
+		p->defindent = 7;
 	p->tcol->rmargin = p->maxrmargin = p->defrmargin;
 	term_tab_set(p, NULL);
 	term_tab_set(p, "T");
 	term_tab_set(p, ".5i");
 
 	memset(&mt, 0, sizeof(struct mtermp));
 	mt.lmargin[mt.lmargincur] = term_len(p, p->defindent);
 	mt.offset = term_len(p, p->defindent);
 	mt.pardist = 1;
 
 	n = man->first->child;
 	if (p->synopsisonly) {
 		while (n != NULL) {
 			if (n->tok == MAN_SH &&
 			    n->child->child->type == ROFFT_TEXT &&
 			    !strcmp(n->child->child->string, "SYNOPSIS")) {
 				if (n->child->next->child != NULL)
 					print_man_nodelist(p, &mt,
 					    n->child->next->child,
 					    &man->meta);
 				term_newln(p);
 				break;
 			}
 			n = n->next;
 		}
 	} else {
-		save_defindent = p->defindent;
-		if (p->defindent == 0)
-			p->defindent = 7;
 		term_begin(p, print_man_head, print_man_foot, &man->meta);
 		p->flags |= TERMP_NOSPACE;
 		if (n != NULL)
 			print_man_nodelist(p, &mt, n, &man->meta);
 		term_end(p);
-		p->defindent = save_defindent;
 	}
+	p->defindent = save_defindent;
 }
 
 /*
  * Printing leading vertical space before a block.
  * This is used for the paragraph macros.
  * The rules are pretty simple, since there's very little nesting going
  * on here.  Basically, if we're the first within another block (SS/SH),
  * then don't emit vertical space.  If we are (RS), then do.  If not the
  * first, print it.
  */
 static void
 print_bvspace(struct termp *p, const struct roff_node *n, int pardist)
 {
 	int	 i;
 
 	term_newln(p);
 
 	if (n->body && n->body->child)
 		if (n->body->child->type == ROFFT_TBL)
 			return;
 
 	if (n->parent->type == ROFFT_ROOT || n->parent->tok != MAN_RS)
 		if (NULL == n->prev)
 			return;
 
 	for (i = 0; i < pardist; i++)
 		term_vspace(p);
 }
 
 
 static int
 pre_ign(DECL_ARGS)
 {
 
 	return 0;
 }
 
 static int
 pre_I(DECL_ARGS)
 {
 
 	term_fontrepl(p, TERMFONT_UNDER);
 	return 1;
 }
 
 static int
 pre_literal(DECL_ARGS)
 {
 
 	term_newln(p);
 
 	if (n->tok == MAN_nf || n->tok == MAN_EX)
 		mt->fl |= MANT_LITERAL;
 	else
 		mt->fl &= ~MANT_LITERAL;
 
 	/*
 	 * Unlike .IP and .TP, .HP does not have a HEAD.
 	 * So in case a second call to term_flushln() is needed,
 	 * indentation has to be set up explicitly.
 	 */
 	if (n->parent->tok == MAN_HP && p->tcol->rmargin < p->maxrmargin) {
 		p->tcol->offset = p->tcol->rmargin;
 		p->tcol->rmargin = p->maxrmargin;
 		p->trailspace = 0;
 		p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND);
 		p->flags |= TERMP_NOSPACE;
 	}
 
 	return 0;
 }
 
 static int
 pre_PD(DECL_ARGS)
 {
 	struct roffsu	 su;
 
 	n = n->child;
 	if (n == NULL) {
 		mt->pardist = 1;
 		return 0;
 	}
 	assert(n->type == ROFFT_TEXT);
 	if (a2roffsu(n->string, &su, SCALE_VS) != NULL)
 		mt->pardist = term_vspan(p, &su);
 	return 0;
 }
 
 static int
 pre_alternate(DECL_ARGS)
 {
 	enum termfont		 font[2];
 	struct roff_node	*nn;
 	int			 savelit, i;
 
 	switch (n->tok) {
 	case MAN_RB:
 		font[0] = TERMFONT_NONE;
 		font[1] = TERMFONT_BOLD;
 		break;
 	case MAN_RI:
 		font[0] = TERMFONT_NONE;
 		font[1] = TERMFONT_UNDER;
 		break;
 	case MAN_BR:
 		font[0] = TERMFONT_BOLD;
 		font[1] = TERMFONT_NONE;
 		break;
 	case MAN_BI:
 		font[0] = TERMFONT_BOLD;
 		font[1] = TERMFONT_UNDER;
 		break;
 	case MAN_IR:
 		font[0] = TERMFONT_UNDER;
 		font[1] = TERMFONT_NONE;
 		break;
 	case MAN_IB:
 		font[0] = TERMFONT_UNDER;
 		font[1] = TERMFONT_BOLD;
 		break;
 	default:
 		abort();
 	}
 
 	savelit = MANT_LITERAL & mt->fl;
 	mt->fl &= ~MANT_LITERAL;
 
 	for (i = 0, nn = n->child; nn; nn = nn->next, i = 1 - i) {
 		term_fontrepl(p, font[i]);
 		if (savelit && NULL == nn->next)
 			mt->fl |= MANT_LITERAL;
 		assert(nn->type == ROFFT_TEXT);
 		term_word(p, nn->string);
 		if (nn->flags & NODE_EOS)
                 	p->flags |= TERMP_SENTENCE;
 		if (nn->next)
 			p->flags |= TERMP_NOSPACE;
 	}
 
 	return 0;
 }
 
 static int
 pre_B(DECL_ARGS)
 {
 
 	term_fontrepl(p, TERMFONT_BOLD);
 	return 1;
 }
 
 static int
 pre_OP(DECL_ARGS)
 {
 
 	term_word(p, "[");
 	p->flags |= TERMP_NOSPACE;
 
 	if (NULL != (n = n->child)) {
 		term_fontrepl(p, TERMFONT_BOLD);
 		term_word(p, n->string);
 	}
 	if (NULL != n && NULL != n->next) {
 		term_fontrepl(p, TERMFONT_UNDER);
 		term_word(p, n->next->string);
 	}
 
 	term_fontrepl(p, TERMFONT_NONE);
 	p->flags |= TERMP_NOSPACE;
 	term_word(p, "]");
 	return 0;
 }
 
 static int
 pre_in(DECL_ARGS)
 {
 	struct roffsu	 su;
 	const char	*cp;
 	size_t		 v;
 	int		 less;
 
 	term_newln(p);
 
 	if (n->child == NULL) {
 		p->tcol->offset = mt->offset;
 		return 0;
 	}
 
 	cp = n->child->string;
 	less = 0;
 
 	if ('-' == *cp)
 		less = -1;
 	else if ('+' == *cp)
 		less = 1;
 	else
 		cp--;
 
 	if (a2roffsu(++cp, &su, SCALE_EN) == NULL)
 		return 0;
 
-	v = (term_hspan(p, &su) + 11) / 24;
+	v = term_hen(p, &su);
 
 	if (less < 0)
 		p->tcol->offset -= p->tcol->offset > v ? v : p->tcol->offset;
 	else if (less > 0)
 		p->tcol->offset += v;
 	else
 		p->tcol->offset = v;
 	if (p->tcol->offset > SHRT_MAX)
 		p->tcol->offset = term_len(p, p->defindent);
 
 	return 0;
 }
 
 static int
 pre_DT(DECL_ARGS)
 {
 	term_tab_set(p, NULL);
 	term_tab_set(p, "T");
 	term_tab_set(p, ".5i");
 	return 0;
 }
 
 static int
 pre_HP(DECL_ARGS)
 {
 	struct roffsu		 su;
 	const struct roff_node	*nn;
 	int			 len;
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		print_bvspace(p, n, mt->pardist);
 		return 1;
 	case ROFFT_BODY:
 		break;
 	default:
 		return 0;
 	}
 
 	if ( ! (MANT_LITERAL & mt->fl)) {
 		p->flags |= TERMP_NOBREAK | TERMP_BRIND;
 		p->trailspace = 2;
 	}
 
 	/* Calculate offset. */
 
 	if ((nn = n->parent->head->child) != NULL &&
 	    a2roffsu(nn->string, &su, SCALE_EN) != NULL) {
-		len = term_hspan(p, &su) / 24;
+		len = term_hen(p, &su);
 		if (len < 0 && (size_t)(-len) > mt->offset)
 			len = -mt->offset;
 		else if (len > SHRT_MAX)
 			len = term_len(p, p->defindent);
 		mt->lmargin[mt->lmargincur] = len;
 	} else
 		len = mt->lmargin[mt->lmargincur];
 
 	p->tcol->offset = mt->offset;
 	p->tcol->rmargin = mt->offset + len;
 	return 1;
 }
 
 static void
 post_HP(DECL_ARGS)
 {
 
 	switch (n->type) {
 	case ROFFT_BODY:
 		term_newln(p);
 
 		/*
 		 * Compatibility with a groff bug.
 		 * The .HP macro uses the undocumented .tag request
 		 * which causes a line break and cancels no-space
 		 * mode even if there isn't any output.
 		 */
 
 		if (n->child == NULL)
 			term_vspace(p);
 
 		p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND);
 		p->trailspace = 0;
 		p->tcol->offset = mt->offset;
 		p->tcol->rmargin = p->maxrmargin;
 		break;
 	default:
 		break;
 	}
 }
 
 static int
 pre_PP(DECL_ARGS)
 {
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		mt->lmargin[mt->lmargincur] = term_len(p, p->defindent);
 		print_bvspace(p, n, mt->pardist);
 		break;
 	default:
 		p->tcol->offset = mt->offset;
 		break;
 	}
 
 	return n->type != ROFFT_HEAD;
 }
 
 static int
 pre_IP(DECL_ARGS)
 {
 	struct roffsu		 su;
 	const struct roff_node	*nn;
 	int			 len, savelit;
 
 	switch (n->type) {
 	case ROFFT_BODY:
 		p->flags |= TERMP_NOSPACE;
 		break;
 	case ROFFT_HEAD:
 		p->flags |= TERMP_NOBREAK;
 		p->trailspace = 1;
 		break;
 	case ROFFT_BLOCK:
 		print_bvspace(p, n, mt->pardist);
 		/* FALLTHROUGH */
 	default:
 		return 1;
 	}
 
 	/* Calculate the offset from the optional second argument. */
 	if ((nn = n->parent->head->child) != NULL &&
 	    (nn = nn->next) != NULL &&
 	    a2roffsu(nn->string, &su, SCALE_EN) != NULL) {
-		len = term_hspan(p, &su) / 24;
+		len = term_hen(p, &su);
 		if (len < 0 && (size_t)(-len) > mt->offset)
 			len = -mt->offset;
 		else if (len > SHRT_MAX)
 			len = term_len(p, p->defindent);
 		mt->lmargin[mt->lmargincur] = len;
 	} else
 		len = mt->lmargin[mt->lmargincur];
 
 	switch (n->type) {
 	case ROFFT_HEAD:
 		p->tcol->offset = mt->offset;
 		p->tcol->rmargin = mt->offset + len;
 
 		savelit = MANT_LITERAL & mt->fl;
 		mt->fl &= ~MANT_LITERAL;
 
 		if (n->child)
 			print_man_node(p, mt, n->child, meta);
 
 		if (savelit)
 			mt->fl |= MANT_LITERAL;
 
 		return 0;
 	case ROFFT_BODY:
 		p->tcol->offset = mt->offset + len;
 		p->tcol->rmargin = p->maxrmargin;
 		break;
 	default:
 		break;
 	}
 
 	return 1;
 }
 
 static void
 post_IP(DECL_ARGS)
 {
 
 	switch (n->type) {
 	case ROFFT_HEAD:
 		term_flushln(p);
 		p->flags &= ~TERMP_NOBREAK;
 		p->trailspace = 0;
 		p->tcol->rmargin = p->maxrmargin;
 		break;
 	case ROFFT_BODY:
 		term_newln(p);
 		p->tcol->offset = mt->offset;
 		break;
 	default:
 		break;
 	}
 }
 
 static int
 pre_TP(DECL_ARGS)
 {
 	struct roffsu		 su;
 	struct roff_node	*nn;
 	int			 len, savelit;
 
 	switch (n->type) {
 	case ROFFT_HEAD:
 		p->flags |= TERMP_NOBREAK | TERMP_BRTRSP;
 		p->trailspace = 1;
 		break;
 	case ROFFT_BODY:
 		p->flags |= TERMP_NOSPACE;
 		break;
 	case ROFFT_BLOCK:
 		print_bvspace(p, n, mt->pardist);
 		/* FALLTHROUGH */
 	default:
 		return 1;
 	}
 
 	/* Calculate offset. */
 
 	if ((nn = n->parent->head->child) != NULL &&
 	    nn->string != NULL && ! (NODE_LINE & nn->flags) &&
 	    a2roffsu(nn->string, &su, SCALE_EN) != NULL) {
-		len = term_hspan(p, &su) / 24;
+		len = term_hen(p, &su);
 		if (len < 0 && (size_t)(-len) > mt->offset)
 			len = -mt->offset;
 		else if (len > SHRT_MAX)
 			len = term_len(p, p->defindent);
 		mt->lmargin[mt->lmargincur] = len;
 	} else
 		len = mt->lmargin[mt->lmargincur];
 
 	switch (n->type) {
 	case ROFFT_HEAD:
 		p->tcol->offset = mt->offset;
 		p->tcol->rmargin = mt->offset + len;
 
 		savelit = MANT_LITERAL & mt->fl;
 		mt->fl &= ~MANT_LITERAL;
 
 		/* Don't print same-line elements. */
 		nn = n->child;
 		while (NULL != nn && 0 == (NODE_LINE & nn->flags))
 			nn = nn->next;
 
 		while (NULL != nn) {
 			print_man_node(p, mt, nn, meta);
 			nn = nn->next;
 		}
 
 		if (savelit)
 			mt->fl |= MANT_LITERAL;
 		return 0;
 	case ROFFT_BODY:
 		p->tcol->offset = mt->offset + len;
 		p->tcol->rmargin = p->maxrmargin;
 		p->trailspace = 0;
 		p->flags &= ~(TERMP_NOBREAK | TERMP_BRTRSP);
 		break;
 	default:
 		break;
 	}
 
 	return 1;
 }
 
 static void
 post_TP(DECL_ARGS)
 {
 
 	switch (n->type) {
 	case ROFFT_HEAD:
 		term_flushln(p);
 		break;
 	case ROFFT_BODY:
 		term_newln(p);
 		p->tcol->offset = mt->offset;
 		break;
 	default:
 		break;
 	}
 }
 
 static int
 pre_SS(DECL_ARGS)
 {
 	int	 i;
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		mt->fl &= ~MANT_LITERAL;
 		mt->lmargin[mt->lmargincur] = term_len(p, p->defindent);
 		mt->offset = term_len(p, p->defindent);
 
 		/*
 		 * No vertical space before the first subsection
 		 * and after an empty subsection.
 		 */
 
 		do {
 			n = n->prev;
 		} while (n != NULL && n->tok != TOKEN_NONE &&
 		    termacts[n->tok].flags & MAN_NOTEXT);
 		if (n == NULL || (n->tok == MAN_SS && n->body->child == NULL))
 			break;
 
 		for (i = 0; i < mt->pardist; i++)
 			term_vspace(p);
 		break;
 	case ROFFT_HEAD:
 		term_fontrepl(p, TERMFONT_BOLD);
 		p->tcol->offset = term_len(p, 3);
 		p->tcol->rmargin = mt->offset;
 		p->trailspace = mt->offset;
 		p->flags |= TERMP_NOBREAK | TERMP_BRIND;
 		break;
 	case ROFFT_BODY:
 		p->tcol->offset = mt->offset;
 		p->tcol->rmargin = p->maxrmargin;
 		p->trailspace = 0;
 		p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND);
 		break;
 	default:
 		break;
 	}
 
 	return 1;
 }
 
 static void
 post_SS(DECL_ARGS)
 {
 
 	switch (n->type) {
 	case ROFFT_HEAD:
 		term_newln(p);
 		break;
 	case ROFFT_BODY:
 		term_newln(p);
 		break;
 	default:
 		break;
 	}
 }
 
 static int
 pre_SH(DECL_ARGS)
 {
 	int	 i;
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		mt->fl &= ~MANT_LITERAL;
 		mt->lmargin[mt->lmargincur] = term_len(p, p->defindent);
 		mt->offset = term_len(p, p->defindent);
 
 		/*
 		 * No vertical space before the first section
 		 * and after an empty section.
 		 */
 
 		do {
 			n = n->prev;
 		} while (n != NULL && n->tok != TOKEN_NONE &&
 		    termacts[n->tok].flags & MAN_NOTEXT);
 		if (n == NULL || (n->tok == MAN_SH && n->body->child == NULL))
 			break;
 
 		for (i = 0; i < mt->pardist; i++)
 			term_vspace(p);
 		break;
 	case ROFFT_HEAD:
 		term_fontrepl(p, TERMFONT_BOLD);
 		p->tcol->offset = 0;
 		p->tcol->rmargin = mt->offset;
 		p->trailspace = mt->offset;
 		p->flags |= TERMP_NOBREAK | TERMP_BRIND;
 		break;
 	case ROFFT_BODY:
 		p->tcol->offset = mt->offset;
 		p->tcol->rmargin = p->maxrmargin;
 		p->trailspace = 0;
 		p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND);
 		break;
 	default:
 		break;
 	}
 
 	return 1;
 }
 
 static void
 post_SH(DECL_ARGS)
 {
 
 	switch (n->type) {
 	case ROFFT_HEAD:
 		term_newln(p);
 		break;
 	case ROFFT_BODY:
 		term_newln(p);
 		break;
 	default:
 		break;
 	}
 }
 
 static int
 pre_RS(DECL_ARGS)
 {
 	struct roffsu	 su;
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		term_newln(p);
 		return 1;
 	case ROFFT_HEAD:
 		return 0;
 	default:
 		break;
 	}
 
 	n = n->parent->head;
 	n->aux = SHRT_MAX + 1;
 	if (n->child == NULL)
 		n->aux = mt->lmargin[mt->lmargincur];
 	else if (a2roffsu(n->child->string, &su, SCALE_EN) != NULL)
-		n->aux = term_hspan(p, &su) / 24;
+		n->aux = term_hen(p, &su);
 	if (n->aux < 0 && (size_t)(-n->aux) > mt->offset)
 		n->aux = -mt->offset;
 	else if (n->aux > SHRT_MAX)
 		n->aux = term_len(p, p->defindent);
 
 	mt->offset += n->aux;
 	p->tcol->offset = mt->offset;
 	p->tcol->rmargin = p->maxrmargin;
 
 	if (++mt->lmarginsz < MAXMARGINS)
 		mt->lmargincur = mt->lmarginsz;
 
 	mt->lmargin[mt->lmargincur] = term_len(p, p->defindent);
 	return 1;
 }
 
 static void
 post_RS(DECL_ARGS)
 {
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		return;
 	case ROFFT_HEAD:
 		return;
 	default:
 		term_newln(p);
 		break;
 	}
 
 	mt->offset -= n->parent->head->aux;
 	p->tcol->offset = mt->offset;
 
 	if (--mt->lmarginsz < MAXMARGINS)
 		mt->lmargincur = mt->lmarginsz;
 }
 
 static int
 pre_UR(DECL_ARGS)
 {
 
 	return n->type != ROFFT_HEAD;
 }
 
 static void
 post_UR(DECL_ARGS)
 {
 
 	if (n->type != ROFFT_BLOCK)
 		return;
 
 	term_word(p, "<");
 	p->flags |= TERMP_NOSPACE;
 
 	if (NULL != n->child->child)
 		print_man_node(p, mt, n->child->child, meta);
 
 	p->flags |= TERMP_NOSPACE;
 	term_word(p, ">");
 }
 
 static void
 print_man_node(DECL_ARGS)
 {
 	int		 c;
 
 	switch (n->type) {
 	case ROFFT_TEXT:
 		/*
 		 * If we have a blank line, output a vertical space.
 		 * If we have a space as the first character, break
 		 * before printing the line's data.
 		 */
 		if (*n->string == '\0') {
-			term_vspace(p);
+			if (p->flags & TERMP_NONEWLINE)
+				term_newln(p);
+			else
+				term_vspace(p);
 			return;
 		} else if (*n->string == ' ' && n->flags & NODE_LINE &&
 		    (p->flags & TERMP_NONEWLINE) == 0)
 			term_newln(p);
 
 		term_word(p, n->string);
 		goto out;
 
 	case ROFFT_EQN:
 		if ( ! (n->flags & NODE_LINE))
 			p->flags |= TERMP_NOSPACE;
 		term_eqn(p, n->eqn);
 		if (n->next != NULL && ! (n->next->flags & NODE_LINE))
 			p->flags |= TERMP_NOSPACE;
 		return;
 	case ROFFT_TBL:
 		if (p->tbl.cols == NULL)
 			term_vspace(p);
 		term_tbl(p, n->span);
 		return;
 	default:
 		break;
 	}
 
 	if (n->tok < ROFF_MAX) {
 		roff_term_pre(p, n);
 		return;
 	}
 
 	assert(n->tok >= MAN_TH && n->tok <= MAN_MAX);
 	if ( ! (MAN_NOTEXT & termacts[n->tok].flags))
 		term_fontrepl(p, TERMFONT_NONE);
 
 	c = 1;
 	if (termacts[n->tok].pre)
 		c = (*termacts[n->tok].pre)(p, mt, n, meta);
 
 	if (c && n->child)
 		print_man_nodelist(p, mt, n->child, meta);
 
 	if (termacts[n->tok].post)
 		(*termacts[n->tok].post)(p, mt, n, meta);
 	if ( ! (MAN_NOTEXT & termacts[n->tok].flags))
 		term_fontrepl(p, TERMFONT_NONE);
 
 out:
 	/*
 	 * If we're in a literal context, make sure that words
 	 * together on the same line stay together.  This is a
 	 * POST-printing call, so we check the NEXT word.  Since
 	 * -man doesn't have nested macros, we don't need to be
 	 * more specific than this.
 	 */
 	if (mt->fl & MANT_LITERAL &&
 	    ! (p->flags & (TERMP_NOBREAK | TERMP_NONEWLINE)) &&
 	    (n->next == NULL || n->next->flags & NODE_LINE)) {
 		p->flags |= TERMP_BRNEVER | TERMP_NOSPACE;
 		if (n->string != NULL && *n->string != '\0')
 			term_flushln(p);
 		else
 			term_newln(p);
 		p->flags &= ~TERMP_BRNEVER;
 		if (p->tcol->rmargin < p->maxrmargin &&
 		    n->parent->tok == MAN_HP) {
 			p->tcol->offset = p->tcol->rmargin;
 			p->tcol->rmargin = p->maxrmargin;
 		}
 	}
 	if (NODE_EOS & n->flags)
 		p->flags |= TERMP_SENTENCE;
 }
 
 
 static void
 print_man_nodelist(DECL_ARGS)
 {
 
 	while (n != NULL) {
 		print_man_node(p, mt, n, meta);
 		n = n->next;
 	}
 }
 
 static void
 print_man_foot(struct termp *p, const struct roff_meta *meta)
 {
 	char			*title;
 	size_t			 datelen, titlen;
 
 	assert(meta->title);
 	assert(meta->msec);
 	assert(meta->date);
 
 	term_fontrepl(p, TERMFONT_NONE);
 
 	if (meta->hasbody)
 		term_vspace(p);
 
 	/*
 	 * Temporary, undocumented option to imitate mdoc(7) output.
 	 * In the bottom right corner, use the operating system
 	 * instead of the title.
 	 */
 
 	if ( ! p->mdocstyle) {
 		if (meta->hasbody) {
 			term_vspace(p);
 			term_vspace(p);
 		}
 		mandoc_asprintf(&title, "%s(%s)",
 		    meta->title, meta->msec);
 	} else if (meta->os) {
 		title = mandoc_strdup(meta->os);
 	} else {
 		title = mandoc_strdup("");
 	}
 	datelen = term_strlen(p, meta->date);
 
 	/* Bottom left corner: operating system. */
 
 	p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
 	p->trailspace = 1;
 	p->tcol->offset = 0;
 	p->tcol->rmargin = p->maxrmargin > datelen ?
 	    (p->maxrmargin + term_len(p, 1) - datelen) / 2 : 0;
 
 	if (meta->os)
 		term_word(p, meta->os);
 	term_flushln(p);
 
 	/* At the bottom in the middle: manual date. */
 
 	p->tcol->offset = p->tcol->rmargin;
 	titlen = term_strlen(p, title);
 	p->tcol->rmargin = p->maxrmargin > titlen ?
 	    p->maxrmargin - titlen : 0;
 	p->flags |= TERMP_NOSPACE;
 
 	term_word(p, meta->date);
 	term_flushln(p);
 
 	/* Bottom right corner: manual title and section. */
 
 	p->flags &= ~TERMP_NOBREAK;
 	p->flags |= TERMP_NOSPACE;
 	p->trailspace = 0;
 	p->tcol->offset = p->tcol->rmargin;
 	p->tcol->rmargin = p->maxrmargin;
 
 	term_word(p, title);
 	term_flushln(p);
 	free(title);
 }
 
 static void
 print_man_head(struct termp *p, const struct roff_meta *meta)
 {
 	const char		*volume;
 	char			*title;
 	size_t			 vollen, titlen;
 
 	assert(meta->title);
 	assert(meta->msec);
 
 	volume = NULL == meta->vol ? "" : meta->vol;
 	vollen = term_strlen(p, volume);
 
 	/* Top left corner: manual title and section. */
 
 	mandoc_asprintf(&title, "%s(%s)", meta->title, meta->msec);
 	titlen = term_strlen(p, title);
 
 	p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
 	p->trailspace = 1;
 	p->tcol->offset = 0;
 	p->tcol->rmargin = 2 * (titlen+1) + vollen < p->maxrmargin ?
 	    (p->maxrmargin - vollen + term_len(p, 1)) / 2 :
 	    vollen < p->maxrmargin ? p->maxrmargin - vollen : 0;
 
 	term_word(p, title);
 	term_flushln(p);
 
 	/* At the top in the middle: manual volume. */
 
 	p->flags |= TERMP_NOSPACE;
 	p->tcol->offset = p->tcol->rmargin;
 	p->tcol->rmargin = p->tcol->offset + vollen + titlen <
 	    p->maxrmargin ?  p->maxrmargin - titlen : p->maxrmargin;
 
 	term_word(p, volume);
 	term_flushln(p);
 
 	/* Top right corner: title and section, again. */
 
 	p->flags &= ~TERMP_NOBREAK;
 	p->trailspace = 0;
 	if (p->tcol->rmargin + titlen <= p->maxrmargin) {
 		p->flags |= TERMP_NOSPACE;
 		p->tcol->offset = p->tcol->rmargin;
 		p->tcol->rmargin = p->maxrmargin;
 		term_word(p, title);
 		term_flushln(p);
 	}
 
 	p->flags &= ~TERMP_NOSPACE;
 	p->tcol->offset = 0;
 	p->tcol->rmargin = p->maxrmargin;
 
 	/*
 	 * Groff prints three blank lines before the content.
 	 * Do the same, except in the temporary, undocumented
 	 * mode imitating mdoc(7) output.
 	 */
 
 	term_vspace(p);
 	if ( ! p->mdocstyle) {
 		term_vspace(p);
 		term_vspace(p);
 	}
 	free(title);
 }
Index: vendor/mdocml/dist/man_validate.c
===================================================================
--- vendor/mdocml/dist/man_validate.c	(revision 321806)
+++ vendor/mdocml/dist/man_validate.c	(revision 321807)
@@ -1,465 +1,494 @@
 /*	$OpenBSD$ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons 
  * Copyright (c) 2010, 2012-2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc_aux.h"
 #include "mandoc.h"
 #include "roff.h"
 #include "man.h"
 #include "libmandoc.h"
 #include "roff_int.h"
 #include "libman.h"
 
 #define	CHKARGS	  struct roff_man *man, struct roff_node *n
 
 typedef	void	(*v_check)(CHKARGS);
 
 static	void	  check_par(CHKARGS);
 static	void	  check_part(CHKARGS);
 static	void	  check_root(CHKARGS);
 static	void	  check_text(CHKARGS);
 
 static	void	  post_AT(CHKARGS);
 static	void	  post_IP(CHKARGS);
-static	void	  post_vs(CHKARGS);
 static	void	  post_OP(CHKARGS);
 static	void	  post_TH(CHKARGS);
 static	void	  post_UC(CHKARGS);
 static	void	  post_UR(CHKARGS);
+static	void	  post_in(CHKARGS);
+static	void	  post_vs(CHKARGS);
 
 static	const v_check __man_valids[MAN_MAX - MAN_TH] = {
 	post_TH,    /* TH */
 	NULL,       /* SH */
 	NULL,       /* SS */
 	NULL,       /* TP */
 	check_par,  /* LP */
 	check_par,  /* PP */
 	check_par,  /* P */
 	post_IP,    /* IP */
 	NULL,       /* HP */
 	NULL,       /* SM */
 	NULL,       /* SB */
 	NULL,       /* BI */
 	NULL,       /* IB */
 	NULL,       /* BR */
 	NULL,       /* RB */
 	NULL,       /* R */
 	NULL,       /* B */
 	NULL,       /* I */
 	NULL,       /* IR */
 	NULL,       /* RI */
 	NULL,       /* nf */
 	NULL,       /* fi */
 	NULL,       /* RE */
 	check_part, /* RS */
 	NULL,       /* DT */
 	post_UC,    /* UC */
 	NULL,       /* PD */
 	post_AT,    /* AT */
-	NULL,       /* in */
+	post_in,    /* in */
 	post_OP,    /* OP */
 	NULL,       /* EX */
 	NULL,       /* EE */
 	post_UR,    /* UR */
 	NULL,       /* UE */
+	post_UR,    /* MT */
+	NULL,       /* ME */
 };
 static	const v_check *man_valids = __man_valids - MAN_TH;
 
 
 void
 man_node_validate(struct roff_man *man)
 {
 	struct roff_node *n;
 	const v_check	 *cp;
 
 	n = man->last;
 	man->last = man->last->child;
 	while (man->last != NULL) {
 		man_node_validate(man);
 		if (man->last == n)
 			man->last = man->last->child;
 		else
 			man->last = man->last->next;
 	}
 
 	man->last = n;
 	man->next = ROFF_NEXT_SIBLING;
 	switch (n->type) {
 	case ROFFT_TEXT:
 		check_text(man, n);
 		break;
 	case ROFFT_ROOT:
 		check_root(man, n);
 		break;
 	case ROFFT_EQN:
 	case ROFFT_TBL:
 		break;
 	default:
 		if (n->tok < ROFF_MAX) {
 			switch (n->tok) {
 			case ROFF_br:
 			case ROFF_sp:
 				post_vs(man, n);
 				break;
 			default:
 				roff_validate(man);
 				break;
 			}
 			break;
 		}
 		assert(n->tok >= MAN_TH && n->tok < MAN_MAX);
 		cp = man_valids + n->tok;
 		if (*cp)
 			(*cp)(man, n);
 		if (man->last == n)
 			man_state(man, n);
 		break;
 	}
 }
 
 static void
 check_root(CHKARGS)
 {
 
 	assert((man->flags & (MAN_BLINE | MAN_ELINE)) == 0);
 
 	if (NULL == man->first->child)
 		mandoc_msg(MANDOCERR_DOC_EMPTY, man->parse,
 		    n->line, n->pos, NULL);
 	else
 		man->meta.hasbody = 1;
 
 	if (NULL == man->meta.title) {
 		mandoc_msg(MANDOCERR_TH_NOTITLE, man->parse,
 		    n->line, n->pos, NULL);
 
 		/*
 		 * If a title hasn't been set, do so now (by
 		 * implication, date and section also aren't set).
 		 */
 
 		man->meta.title = mandoc_strdup("");
 		man->meta.msec = mandoc_strdup("");
 		man->meta.date = man->quick ? mandoc_strdup("") :
-		    mandoc_normdate(man->parse, NULL, n->line, n->pos);
+		    mandoc_normdate(man, NULL, n->line, n->pos);
 	}
+
+	if (man->meta.os_e &&
+	    (man->meta.rcsids & (1 << man->meta.os_e)) == 0)
+		mandoc_msg(MANDOCERR_RCS_MISSING, man->parse, 0, 0,
+		    man->meta.os_e == MANDOC_OS_OPENBSD ?
+		    "(OpenBSD)" : "(NetBSD)");
 }
 
 static void
 check_text(CHKARGS)
 {
 	char		*cp, *p;
 
 	if (MAN_LITERAL & man->flags)
 		return;
 
 	cp = n->string;
 	for (p = cp; NULL != (p = strchr(p, '\t')); p++)
 		mandoc_msg(MANDOCERR_FI_TAB, man->parse,
 		    n->line, n->pos + (p - cp), NULL);
 }
 
 static void
 post_OP(CHKARGS)
 {
 
 	if (n->child == NULL)
 		mandoc_msg(MANDOCERR_OP_EMPTY, man->parse,
 		    n->line, n->pos, "OP");
 	else if (n->child->next != NULL && n->child->next->next != NULL) {
 		n = n->child->next->next;
 		mandoc_vmsg(MANDOCERR_ARG_EXCESS, man->parse,
 		    n->line, n->pos, "OP ... %s", n->string);
 	}
 }
 
 static void
 post_UR(CHKARGS)
 {
-
 	if (n->type == ROFFT_HEAD && n->child == NULL)
-		mandoc_vmsg(MANDOCERR_UR_NOHEAD, man->parse,
-		    n->line, n->pos, "UR");
+		mandoc_msg(MANDOCERR_UR_NOHEAD, man->parse,
+		    n->line, n->pos, roff_name[n->tok]);
 	check_part(man, n);
 }
 
 static void
 check_part(CHKARGS)
 {
 
 	if (n->type == ROFFT_BODY && n->child == NULL)
 		mandoc_msg(MANDOCERR_BLK_EMPTY, man->parse,
 		    n->line, n->pos, roff_name[n->tok]);
 }
 
 static void
 check_par(CHKARGS)
 {
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		if (n->body->child == NULL)
 			roff_node_delete(man, n);
 		break;
 	case ROFFT_BODY:
 		if (n->child == NULL)
 			mandoc_vmsg(MANDOCERR_PAR_SKIP,
 			    man->parse, n->line, n->pos,
 			    "%s empty", roff_name[n->tok]);
 		break;
 	case ROFFT_HEAD:
 		if (n->child != NULL)
 			mandoc_vmsg(MANDOCERR_ARG_SKIP,
 			    man->parse, n->line, n->pos, "%s %s%s",
 			    roff_name[n->tok], n->child->string,
 			    n->child->next != NULL ? " ..." : "");
 		break;
 	default:
 		break;
 	}
 }
 
 static void
 post_IP(CHKARGS)
 {
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		if (n->head->child == NULL && n->body->child == NULL)
 			roff_node_delete(man, n);
 		break;
 	case ROFFT_BODY:
 		if (n->parent->head->child == NULL && n->child == NULL)
 			mandoc_vmsg(MANDOCERR_PAR_SKIP,
 			    man->parse, n->line, n->pos,
 			    "%s empty", roff_name[n->tok]);
 		break;
 	default:
 		break;
 	}
 }
 
 static void
 post_TH(CHKARGS)
 {
 	struct roff_node *nb;
 	const char	*p;
 
 	free(man->meta.title);
 	free(man->meta.vol);
 	free(man->meta.os);
 	free(man->meta.msec);
 	free(man->meta.date);
 
 	man->meta.title = man->meta.vol = man->meta.date =
 	    man->meta.msec = man->meta.os = NULL;
 
 	nb = n;
 
 	/* ->TITLE<- MSEC DATE OS VOL */
 
 	n = n->child;
 	if (n && n->string) {
 		for (p = n->string; '\0' != *p; p++) {
 			/* Only warn about this once... */
 			if (isalpha((unsigned char)*p) &&
 			    ! isupper((unsigned char)*p)) {
 				mandoc_vmsg(MANDOCERR_TITLE_CASE,
 				    man->parse, n->line,
 				    n->pos + (p - n->string),
 				    "TH %s", n->string);
 				break;
 			}
 		}
 		man->meta.title = mandoc_strdup(n->string);
 	} else {
 		man->meta.title = mandoc_strdup("");
 		mandoc_msg(MANDOCERR_TH_NOTITLE, man->parse,
 		    nb->line, nb->pos, "TH");
 	}
 
 	/* TITLE ->MSEC<- DATE OS VOL */
 
 	if (n)
 		n = n->next;
 	if (n && n->string)
 		man->meta.msec = mandoc_strdup(n->string);
 	else {
 		man->meta.msec = mandoc_strdup("");
 		mandoc_vmsg(MANDOCERR_MSEC_MISSING, man->parse,
 		    nb->line, nb->pos, "TH %s", man->meta.title);
 	}
 
 	/* TITLE MSEC ->DATE<- OS VOL */
 
 	if (n)
 		n = n->next;
 	if (n && n->string && '\0' != n->string[0]) {
 		man->meta.date = man->quick ?
 		    mandoc_strdup(n->string) :
-		    mandoc_normdate(man->parse, n->string,
-			n->line, n->pos);
+		    mandoc_normdate(man, n->string, n->line, n->pos);
 	} else {
 		man->meta.date = mandoc_strdup("");
 		mandoc_msg(MANDOCERR_DATE_MISSING, man->parse,
 		    n ? n->line : nb->line,
 		    n ? n->pos : nb->pos, "TH");
 	}
 
 	/* TITLE MSEC DATE ->OS<- VOL */
 
 	if (n && (n = n->next))
 		man->meta.os = mandoc_strdup(n->string);
-	else if (man->defos != NULL)
-		man->meta.os = mandoc_strdup(man->defos);
+	else if (man->os_s != NULL)
+		man->meta.os = mandoc_strdup(man->os_s);
+	if (man->meta.os_e == MANDOC_OS_OTHER && man->meta.os != NULL) {
+		if (strstr(man->meta.os, "OpenBSD") != NULL)
+			man->meta.os_e = MANDOC_OS_OPENBSD;
+		else if (strstr(man->meta.os, "NetBSD") != NULL)
+			man->meta.os_e = MANDOC_OS_NETBSD;
+	}
 
 	/* TITLE MSEC DATE OS ->VOL<- */
 	/* If missing, use the default VOL name for MSEC. */
 
 	if (n && (n = n->next))
 		man->meta.vol = mandoc_strdup(n->string);
 	else if ('\0' != man->meta.msec[0] &&
 	    (NULL != (p = mandoc_a2msec(man->meta.msec))))
 		man->meta.vol = mandoc_strdup(p);
 
 	if (n != NULL && (n = n->next) != NULL)
 		mandoc_vmsg(MANDOCERR_ARG_EXCESS, man->parse,
 		    n->line, n->pos, "TH ... %s", n->string);
 
 	/*
 	 * Remove the `TH' node after we've processed it for our
 	 * meta-data.
 	 */
 	roff_node_delete(man, man->last);
 }
 
 static void
 post_UC(CHKARGS)
 {
 	static const char * const bsd_versions[] = {
 	    "3rd Berkeley Distribution",
 	    "4th Berkeley Distribution",
 	    "4.2 Berkeley Distribution",
 	    "4.3 Berkeley Distribution",
 	    "4.4 Berkeley Distribution",
 	};
 
 	const char	*p, *s;
 
 	n = n->child;
 
 	if (n == NULL || n->type != ROFFT_TEXT)
 		p = bsd_versions[0];
 	else {
 		s = n->string;
 		if (0 == strcmp(s, "3"))
 			p = bsd_versions[0];
 		else if (0 == strcmp(s, "4"))
 			p = bsd_versions[1];
 		else if (0 == strcmp(s, "5"))
 			p = bsd_versions[2];
 		else if (0 == strcmp(s, "6"))
 			p = bsd_versions[3];
 		else if (0 == strcmp(s, "7"))
 			p = bsd_versions[4];
 		else
 			p = bsd_versions[0];
 	}
 
 	free(man->meta.os);
 	man->meta.os = mandoc_strdup(p);
 }
 
 static void
 post_AT(CHKARGS)
 {
 	static const char * const unix_versions[] = {
 	    "7th Edition",
 	    "System III",
 	    "System V",
 	    "System V Release 2",
 	};
 
 	struct roff_node *nn;
 	const char	*p, *s;
 
 	n = n->child;
 
 	if (n == NULL || n->type != ROFFT_TEXT)
 		p = unix_versions[0];
 	else {
 		s = n->string;
 		if (0 == strcmp(s, "3"))
 			p = unix_versions[0];
 		else if (0 == strcmp(s, "4"))
 			p = unix_versions[1];
 		else if (0 == strcmp(s, "5")) {
 			nn = n->next;
 			if (nn != NULL &&
 			    nn->type == ROFFT_TEXT &&
 			    nn->string[0] != '\0')
 				p = unix_versions[3];
 			else
 				p = unix_versions[2];
 		} else
 			p = unix_versions[0];
 	}
 
 	free(man->meta.os);
 	man->meta.os = mandoc_strdup(p);
+}
+
+static void
+post_in(CHKARGS)
+{
+	char	*s;
+
+	if (n->parent->tok != MAN_TP ||
+	    n->parent->type != ROFFT_HEAD ||
+	    n->child == NULL ||
+	    *n->child->string == '+' ||
+	    *n->child->string == '-')
+		return;
+	mandoc_asprintf(&s, "+%s", n->child->string);
+	free(n->child->string);
+	n->child->string = s;
 }
 
 static void
 post_vs(CHKARGS)
 {
 
 	if (NULL != n->prev)
 		return;
 
 	switch (n->parent->tok) {
 	case MAN_SH:
 	case MAN_SS:
 	case MAN_PP:
 	case MAN_LP:
 	case MAN_P:
 		mandoc_vmsg(MANDOCERR_PAR_SKIP, man->parse, n->line, n->pos,
 		    "%s after %s", roff_name[n->tok],
 		    roff_name[n->parent->tok]);
 		/* FALLTHROUGH */
 	case TOKEN_NONE:
 		/*
 		 * Don't warn about this because it occurs in pod2man
 		 * and would cause considerable (unfixable) warnage.
 		 */
 		roff_node_delete(man, n);
 		break;
 	default:
 		break;
 	}
 }
Index: vendor/mdocml/dist/manconf.h
===================================================================
--- vendor/mdocml/dist/manconf.h	(revision 321806)
+++ vendor/mdocml/dist/manconf.h	(revision 321807)
@@ -1,49 +1,50 @@
-/*	$OpenBSD$	*/
+/*	$Id: manconf.h,v 1.5 2017/07/01 09:47:30 schwarze Exp $ */
 /*
- * Copyright (c) 2011, 2015 Ingo Schwarze 
+ * Copyright (c) 2011, 2015, 2017 Ingo Schwarze 
  * Copyright (c) 2011 Kristaps Dzonsons 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
 /* List of unique, absolute paths to manual trees. */
 
 struct	manpaths {
 	char	**paths;
 	size_t	  sz;
 };
 
 /* Data from -O options and man.conf(5) output directives. */
 
 struct	manoutput {
 	char	 *includes;
 	char	 *man;
 	char	 *paper;
 	char	 *style;
 	size_t	  indent;
 	size_t	  width;
 	int	  fragment;
 	int	  mdoc;
 	int	  synopsisonly;
 	int	  noval;
 };
 
 struct	manconf {
 	struct manoutput	  output;
 	struct manpaths		  manpath;
 };
 
 
 void	 manconf_parse(struct manconf *, const char *, char *, char *);
 int	 manconf_output(struct manoutput *, const char *, int);
 void	 manconf_free(struct manconf *);
+void	 manpath_base(struct manpaths *);
Index: vendor/mdocml/dist/mandoc.1
===================================================================
--- vendor/mdocml/dist/mandoc.1	(revision 321806)
+++ vendor/mdocml/dist/mandoc.1	(revision 321807)
@@ -1,1972 +1,2140 @@
-.\"	$Id: mandoc.1,v 1.196 2017/06/08 00:23:30 schwarze Exp $
+.\"	$Id: mandoc.1,v 1.217 2017/07/20 15:26:41 schwarze Exp $
 .\"
 .\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons 
 .\" Copyright (c) 2012, 2014-2017 Ingo Schwarze 
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above
 .\" copyright notice and this permission notice appear in all copies.
 .\"
 .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: June 8 2017 $
+.Dd $Mdocdate: July 20 2017 $
 .Dt MANDOC 1
 .Os
 .Sh NAME
 .Nm mandoc
 .Nd format manual pages
 .Sh SYNOPSIS
 .Nm mandoc
 .Op Fl ac
 .Op Fl I Cm os Ns = Ns Ar name
 .Op Fl K Ar encoding
 .Op Fl mdoc | man
 .Op Fl O Ar options
 .Op Fl T Ar output
 .Op Fl W Ar level
 .Op Ar
 .Sh DESCRIPTION
 The
 .Nm
 utility formats
 .Ux
 manual pages for display.
 .Pp
 By default,
 .Nm
 reads
 .Xr mdoc 7
 or
 .Xr man 7
 text from stdin and produces
 .Fl T Cm locale
 output.
 .Pp
 The options are as follows:
 .Bl -tag -width Ds
 .It Fl a
 If the standard output is a terminal device and
 .Fl c
 is not specified, use
 .Xr more 1
 to paginate the output, just like
 .Xr man 1
 would.
 .It Fl c
 Copy the formatted manual pages to the standard output without using
 .Xr more 1
 to paginate them.
 This is the default.
 It can be specified to override
 .Fl a .
 .It Fl I Cm os Ns = Ns Ar name
 Override the default operating system
 .Ar name
 for the
 .Xr mdoc 7
 .Ic \&Os
 and for the
 .Xr man 7
 .Ic \&TH
 macro.
-This can also be used to perform style checks according to the
-conventions of one operating system while running on a different
-operating system; see
-.Sx Style messages
-for details.
 .It Fl K Ar encoding
 Specify the input encoding.
 The supported
 .Ar encoding
 arguments are
 .Cm us-ascii ,
 .Cm iso-8859-1 ,
 and
 .Cm utf-8 .
 If not specified, autodetection uses the first match in the following
 list:
 .Bl -enum
 .It
 If the first three bytes of the input file are the UTF-8 byte order
 mark (BOM, 0xefbbbf), input is interpreted as
 .Cm utf-8 .
 .It
 If the first or second line of the input file matches the
 .Sy emacs
 mode line format
 .Pp
 .D1 .\e" -*- Oo ...; Oc coding: Ar encoding ; No -*-
 .Pp
 then input is interpreted according to
 .Ar encoding .
 .It
 If the first non-ASCII byte in the file introduces a valid UTF-8
 sequence, input is interpreted as
 .Cm utf-8 .
 .It
 Otherwise, input is interpreted as
 .Cm iso-8859-1 .
 .El
 .It Fl mdoc | man
 With
 .Fl mdoc ,
 all input files are interpreted as
 .Xr mdoc 7 .
 With
 .Fl man ,
 all input files are interpreted as
 .Xr man 7 .
 By default, the input language is automatically detected for each file:
 if the the first macro is
 .Ic \&Dd
 or
 .Ic \&Dt ,
 the
 .Xr mdoc 7
 parser is used; otherwise, the
 .Xr man 7
 parser is used.
 With other arguments,
 .Fl m
 is silently ignored.
 .It Fl O Ar options
 Comma-separated output options.
 .It Fl T Ar output
 Output format.
 See
 .Sx Output Formats
 for available formats.
 Defaults to
 .Fl T Cm locale .
 .It Fl W Ar level
 Specify the minimum message
 .Ar level
 to be reported on the standard error output and to affect the exit status.
 The
 .Ar level
 can be
+.Cm base ,
 .Cm style ,
 .Cm warning ,
 .Cm error ,
 or
-.Cm unsupp ;
+.Cm unsupp .
+The
+.Cm base
+level automatically derives the operating system from the contents of the
+.Ic \&Os
+macro, from the
+.Fl Ios
+command line option, or from the
+.Xr uname 3
+return value.
+The levels
+.Cm openbsd
+and
+.Cm netbsd
+are variants of
+.Cm base
+that bypass autodetection and request validation of base system
+conventions for a particular operating system.
+The level
 .Cm all
 is an alias for
-.Cm style .
+.Cm base .
 By default,
 .Nm
 is silent.
 See
 .Sx EXIT STATUS
 and
 .Sx DIAGNOSTICS
 for details.
 .Pp
 The special option
 .Fl W Cm stop
 tells
 .Nm
 to exit after parsing a file that causes warnings or errors of at least
 the requested level.
 No formatted output will be produced from that file.
 If both a
 .Ar level
 and
 .Cm stop
 are requested, they can be joined with a comma, for example
 .Fl W Cm error , Ns Cm stop .
 .It Ar file
 Read input from zero or more files.
 If unspecified, reads from stdin.
 If multiple files are specified,
 .Nm
 will halt with the first failed parse.
 .El
 .Pp
 The options
 .Fl fhklw
 are also supported and are documented in man(1).
 In
 .Fl f
 and
 .Fl k
 mode,
 .Nm
 also supports the options
 .Fl CMmOSs
 described in the
 .Xr apropos 1
 manual.
 The options
 .Fl fkl
 are mutually exclusive and override each other.
 .Ss Output Formats
 The
 .Nm
 utility accepts the following
 .Fl T
 arguments, which correspond to output modes:
 .Bl -tag -width "-T markdown"
 .It Fl T Cm ascii
 Produce 7-bit ASCII output.
 See
 .Sx ASCII Output .
 .It Fl T Cm html
 Produce HTML5, CSS1, and MathML output.
 See
 .Sx HTML Output .
 .It Fl T Cm lint
 Parse only: produce no output.
 Implies
-.Fl W Cm style .
+.Fl W Cm all
+and redirects parser messages, which usually appear
+on standard error output, to standard output.
 .It Fl T Cm locale
 Encode output using the current locale.
 This is the default.
 See
 .Sx Locale Output .
 .It Fl T Cm man
 Produce
 .Xr man 7
 format output.
 See
 .Sx Man Output .
 .It Fl T Cm markdown
 Produce output in
 .Sy markdown
 format.
 See
 .Sx Markdown Output .
 .It Fl T Cm pdf
 Produce PDF output.
 See
 .Sx PDF Output .
 .It Fl T Cm ps
 Produce PostScript output.
 See
 .Sx PostScript Output .
 .It Fl T Cm tree
 Produce an indented parse tree.
 See
 .Sx Syntax tree output .
 .It Fl T Cm utf8
 Encode output in the UTF\-8 multi-byte format.
 See
 .Sx UTF\-8 Output .
 .El
 .Pp
 If multiple input files are specified, these will be processed by the
 corresponding filter in-order.
 .Ss ASCII Output
 Output produced by
 .Fl T Cm ascii
 is rendered in standard 7-bit ASCII documented in
 .Xr ascii 7 .
 .Pp
 Font styles are applied by using back-spaced encoding such that an
 underlined character
 .Sq c
 is rendered as
 .Sq _ Ns \e[bs] Ns c ,
 where
 .Sq \e[bs]
 is the back-space character number 8.
 Emboldened characters are rendered as
 .Sq c Ns \e[bs] Ns c .
 .Pp
 The special characters documented in
 .Xr mandoc_char 7
 are rendered best-effort in an ASCII equivalent.
 .Pp
 Output width is limited to 78 visible columns unless literal input lines
 exceed this limit.
 .Pp
 The following
 .Fl O
 arguments are accepted:
 .Bl -tag -width Ds
 .It Cm indent Ns = Ns Ar indent
 The left margin for normal text is set to
 .Ar indent
 blank characters instead of the default of five for
 .Xr mdoc 7
 and seven for
 .Xr man 7 .
 Increasing this is not recommended; it may result in degraded formatting,
 for example overfull lines or ugly line breaks.
 .It Cm width Ns = Ns Ar width
 The output width is set to
-.Ar width ,
-which will normalise to \(>=58.
+.Ar width .
 .El
 .Ss HTML Output
 Output produced by
 .Fl T Cm html
 conforms to HTML5 using optional self-closing tags.
 Default styles use only CSS1.
 Equations rendered from
 .Xr eqn 7
 blocks use MathML.
 .Pp
 The
 .Pa mandoc.css
 file documents style-sheet classes available for customising output.
 If a style-sheet is not specified with
 .Fl O Cm style ,
 .Fl T Cm html
 defaults to simple output (via an embedded style-sheet)
 readable in any graphical or text-based web
 browser.
 .Pp
 Special characters are rendered in decimal-encoded UTF\-8.
 .Pp
 The following
 .Fl O
 arguments are accepted:
 .Bl -tag -width Ds
 .It Cm fragment
 Omit the  declaration and the , , and 
 elements and only emit the subtree below the  element.
 The
 .Cm style
 argument will be ignored.
 This is useful when embedding manual content within existing documents.
 .It Cm includes Ns = Ns Ar fmt
 The string
 .Ar fmt ,
 for example,
 .Ar ../src/%I.html ,
 is used as a template for linked header files (usually via the
 .Ic \&In
 macro).
 Instances of
 .Sq \&%I
 are replaced with the include filename.
 The default is not to present a
 hyperlink.
 .It Cm man Ns = Ns Ar fmt
 The string
 .Ar fmt ,
 for example,
 .Ar ../html%S/%N.%S.html ,
 is used as a template for linked manuals (usually via the
 .Ic \&Xr
 macro).
 Instances of
 .Sq \&%N
 and
 .Sq %S
 are replaced with the linked manual's name and section, respectively.
 If no section is included, section 1 is assumed.
 The default is not to
 present a hyperlink.
 .It Cm style Ns = Ns Ar style.css
 The file
 .Ar style.css
 is used for an external style-sheet.
 This must be a valid absolute or
 relative URI.
 .El
 .Ss Locale Output
 Locale-depending output encoding is triggered with
 .Fl T Cm locale .
 This is the default.
 .Pp
 This option is not available on all systems: systems without locale
 support, or those whose internal representation is not natively UCS-4,
 will fall back to
 .Fl T Cm ascii .
 See
 .Sx ASCII Output
 for font style specification and available command-line arguments.
 .Ss Man Output
 Translate input format into
 .Xr man 7
 output format.
 This is useful for distributing manual sources to legacy systems
 lacking
 .Xr mdoc 7
 formatters.
 .Pp
 If
 .Xr mdoc 7
 is passed as input, it is translated into
 .Xr man 7 .
 If the input format is
 .Xr man 7 ,
 the input is copied to the output, expanding any
 .Xr roff 7
 .Ic so
 requests.
 The parser is also run, and as usual, the
 .Fl W
 level controls which
 .Sx DIAGNOSTICS
 are displayed before copying the input to the output.
 .Ss Markdown Output
 Translate
 .Xr mdoc 7
 input to the
 .Sy markdown
 format conforming to
 .Lk http://daringfireball.net/projects/markdown/syntax.text\
  "John Gruber's 2004 specification" .
 The output also almost conforms to the
 .Lk http://commonmark.org/ CommonMark
 specification.
 .Pp
 The character set used for the markdown output is ASCII.
 Non-ASCII characters are encoded as HTML entities.
 Since that is not possible in literal font contexts, because these
 are rendered as code spans and code blocks in the markdown output,
 non-ASCII characters are transliterated to ASCII approximations in
 these contexts.
 .Pp
 Markdown is a very weak markup language, so all semantic markup is
 lost, and even part of the presentational markup may be lost.
 Do not use this as an intermediate step in converting to HTML;
 instead, use
 .Fl T Cm html
 directly.
 .Pp
 The
 .Xr man 7 ,
 .Xr tbl 7 ,
 and
 .Xr eqn 7
 input languages are not supported by
 .Fl T Cm markdown
 output mode.
 .Ss PDF Output
 PDF-1.1 output may be generated by
 .Fl T Cm pdf .
 See
 .Sx PostScript Output
 for
 .Fl O
 arguments and defaults.
 .Ss PostScript Output
 PostScript
 .Qq Adobe-3.0
 Level-2 pages may be generated by
 .Fl T Cm ps .
 Output pages default to letter sized and are rendered in the Times font
 family, 11-point.
 Margins are calculated as 1/9 the page length and width.
 Line-height is 1.4m.
 .Pp
 Special characters are rendered as in
 .Sx ASCII Output .
 .Pp
 The following
 .Fl O
 arguments are accepted:
 .Bl -tag -width Ds
 .It Cm paper Ns = Ns Ar name
 The paper size
 .Ar name
 may be one of
 .Ar a3 ,
 .Ar a4 ,
 .Ar a5 ,
 .Ar legal ,
 or
 .Ar letter .
 You may also manually specify dimensions as
 .Ar NNxNN ,
 width by height in millimetres.
 If an unknown value is encountered,
 .Ar letter
 is used.
 .El
 .Ss UTF\-8 Output
 Use
 .Fl T Cm utf8
 to force a UTF\-8 locale.
 See
 .Sx Locale Output
 for details and options.
 .Ss Syntax tree output
 Use
 .Fl T Cm tree
 to show a human readable representation of the syntax tree.
 It is useful for debugging the source code of manual pages.
 The exact format is subject to change, so don't write parsers for it.
 .Pp
 The first paragraph shows meta data found in the
 .Xr mdoc 7
 prologue, on the
 .Xr man 7
 .Ic \&TH
 line, or the fallbacks used.
 .Pp
 In the tree dump, each output line shows one syntax tree node.
 Child nodes are indented with respect to their parent node.
 The columns are:
 .Pp
 .Bl -enum -compact
 .It
 For macro nodes, the macro name; for text and
 .Xr tbl 7
 nodes, the content.
 There is a special format for
 .Xr eqn 7
 nodes.
 .It
 Node type (text, elem, block, head, body, body-end, tail, tbl, eqn).
 .It
 Flags:
 .Bl -dash -compact
 .It
 An opening parenthesis if the node is an opening delimiter.
 .It
 An asterisk if the node starts a new input line.
 .It
 The input line number (starting at one).
 .It
 A colon.
 .It
 The input column number (starting at one).
 .It
 A closing parenthesis if the node is a closing delimiter.
 .It
 A full stop if the node ends a sentence.
 .It
 BROKEN if the node is a block broken by another block.
 .It
 NOSRC if the node is not in the input file,
 but automatically generated from macros.
 .It
 NOPRT if the node is not supposed to generate output
 for any output format.
 .El
 .El
 .Pp
 The following
 .Fl O
 argument is accepted:
 .Bl -tag -width Ds
 .It Cm noval
 Skip validation and show the unvalidated syntax tree.
 This can help to find out whether a given behaviour is caused by
 the parser or by the validator.
 Meta data is not available in this case.
 .El
 .Sh ENVIRONMENT
 .Bl -tag -width MANPAGER
 .It Ev MANPAGER
 Any non-empty value of the environment variable
 .Ev MANPAGER
 is used instead of the standard pagination program,
 .Xr more 1 ;
 see
 .Xr man 1
 for details.
 Only used if
 .Fl a
 or
 .Fl l
 is specified.
 .It Ev PAGER
 Specifies the pagination program to use when
 .Ev MANPAGER
 is not defined.
 If neither PAGER nor MANPAGER is defined,
 .Xr more 1
 .Fl s
 is used.
 Only used if
 .Fl a
 or
 .Fl l
 is specified.
 .El
 .Sh EXIT STATUS
 The
 .Nm
 utility exits with one of the following values, controlled by the message
 .Ar level
 associated with the
 .Fl W
 option:
 .Pp
 .Bl -tag -width Ds -compact
 .It 0
-No style suggestions, warnings or errors occurred, or those that
-did were ignored because they were lower than the requested
+No base system convention violations, style suggestions, warnings,
+or errors occurred, or those that did were ignored because they
+were lower than the requested
 .Ar level .
 .It 1
-At least one style suggestion occurred, but no warning or error, and
+At least one base system convention violation or style suggestion
+occurred, but no warning or error, and
+.Fl W Cm base
+or
 .Fl W Cm style
 was specified.
 .It 2
 At least one warning occurred, but no error, and
 .Fl W Cm warning
-or
-.Fl W Cm style
-was specified.
+or a lower
+.Ar level
+was requested.
 .It 3
 At least one parsing error occurred,
 but no unsupported feature was encountered, and
 .Fl W Cm error
 or a lower
 .Ar level
 was requested.
 .It 4
 At least one unsupported feature was encountered, and
 .Fl W Cm unsupp
 or a lower
 .Ar level
 was requested.
 .It 5
 Invalid command line arguments were specified.
 No input files have been read.
 .It 6
 An operating system error occurred, for example exhaustion
 of memory, file descriptors, or process table entries.
 Such errors cause
 .Nm
 to exit at once, possibly in the middle of parsing or formatting a file.
 .El
 .Pp
 Note that selecting
 .Fl T Cm lint
 output mode implies
-.Fl W Cm style .
+.Fl W Cm all .
 .Sh EXAMPLES
 To page manuals to the terminal:
 .Pp
 .Dl $ mandoc -l mandoc.1 man.1 apropos.1 makewhatis.8
 .Pp
 To produce HTML manuals with
 .Pa mandoc.css
 as the style-sheet:
 .Pp
 .Dl $ mandoc \-T html -O style=mandoc.css mdoc.7 \*(Gt mdoc.7.html
 .Pp
 To check over a large set of manuals:
 .Pp
 .Dl $ mandoc \-T lint \(gafind /usr/src -name \e*\e.[1-9]\(ga
 .Pp
 To produce a series of PostScript manuals for A4 paper:
 .Pp
 .Dl $ mandoc \-T ps \-O paper=a4 mdoc.7 man.7 \*(Gt manuals.ps
 .Pp
 Convert a modern
 .Xr mdoc 7
 manual to the older
 .Xr man 7
 format, for use on systems lacking an
 .Xr mdoc 7
 parser:
 .Pp
 .Dl $ mandoc \-T man foo.mdoc \*(Gt foo.man
 .Sh DIAGNOSTICS
 Messages displayed by
 .Nm
 follow this format:
+.Bd -ragged -offset indent
+.Nm :
+.Ar file : Ns Ar line : Ns Ar column : level : message : macro args
+.Pq Ar os
+.Ed
 .Pp
-.D1 Nm Ns : Ar file : Ns Ar line : Ns Ar column : level : message : macro args
-.Pp
 Line and column numbers start at 1.
 Both are omitted for messages referring to an input file as a whole.
 Macro names and arguments are omitted where meaningless.
+The
+.Ar os
+operating system specifier is omitted for messages that are relevant
+for all operating systems.
 Fatal messages about invalid command line arguments
 or operating system errors, for example when memory is exhausted,
 may also omit the
 .Ar file
 and
 .Ar level
 fields.
 .Pp
 Message levels have the following meanings:
 .Bl -tag -width "warning"
 .It Cm unsupp
 An input file uses unsupported low-level
 .Xr roff 7
 features.
 The output may be incomplete and/or misformatted,
 so using GNU troff instead of
 .Nm
 to process the file may be preferable.
 .It Cm error
-An input file contains invalid syntax that cannot be safely interpreted.
-By discarding part of the input or inserting missing tokens,
-the parser is able to continue, and the error does not prevent
-generation of formatted output, but typically, preparing that
-output involves information loss, broken document structure
-or unintended formatting, no matter whether
-.Nm
-or GNU troff is used.
-In many cases, the output of
-.Nm
-and GNU troff is identical, but in some,
-.Nm
-is more resilient than GNU troff with respect to malformed input.
-.Pp
-Non-existent or unreadable input files are also reported on the
-.Cm error
-level.
-In that case, the parser cannot even be started and no output
-is produced from those input files.
+Indicates a risk of information loss or severe misformatting,
+in most cases caused by serious syntax errors.
 .It Cm warning
-An input file uses obsolete, discouraged or non-portable syntax.
-All the same, the meaning of the input is unambiguous and a correct
-rendering can be produced.
-Documents causing warnings may render poorly when using other
-formatting tools instead of
-.Nm .
+Indicates a risk that the information shown or its formatting
+may mismatch the author's intent in minor ways.
+Additionally, syntax errors are classified at least as warnings,
+even if they do not usually cause misformatting.
 .It Cm style
 An input file uses dubious or discouraged style.
 This is not a complaint about the syntax, and probably neither
 formatting nor portability are in danger.
 While great care is taken to avoid false positives on the higher
 message levels, the
 .Cm style
 level tries to reduce the probability that issues go unnoticed,
 so it may occasionally issue bogus suggestions.
 Please use your good judgement to decide whether any particular
 .Cm style
 suggestion really justifies a change to the input file.
+.It Cm base
+A convertion used in the base system of a specific operating system
+is not adhered to.
+These are not markup mistakes, and neither the quality of formatting
+nor portability are in danger.
+Messages of the
+.Cm base
+level are printed with the more intuitive
+.Cm style
+.Ar level
+tag.
 .El
 .Pp
 Messages of the
+.Cm base ,
 .Cm style ,
 .Cm warning ,
 .Cm error ,
 and
 .Cm unsupp
 levels except those about non-existent or unreadable input files
 are hidden unless their level, or a lower level, is requested using a
 .Fl W
 option or
 .Fl T Cm lint
 output mode.
-.Ss Style messages
-As indicated below, some style checks are only performed if a
-specific operating system name occurs in the arguments of the
+.Pp
+As indicated below, all
+.Cm base
+and some
+.Cm style
+checks are only performed if a specific operating system name occurs
+in the arguments of the
+.Fl W
+command line option, of the
 .Ic \&Os
 macro, of the
 .Fl Ios
 command line option, or, if neither are present, in the return value
 of the
 .Xr uname 3
 function.
+.Ss Conventions for base system manuals
 .Bl -ohang
+.It Sy "Mdocdate found"
+.Pq mdoc , Nx
+The
+.Ic \&Dd
+macro uses CVS
+.Ic Mdocdate
+keyword substitution, which is not supported by the
+.Nx
+base system.
+Consider using the conventional
+.Dq "Month dd, yyyy"
+format instead.
+.It Sy "Mdocdate missing"
+.Pq mdoc , Ox
+The
+.Ic \&Dd
+macro does not use CVS
+.Ic Mdocdate
+keyword substitution, but using it is conventionally expected in the
+.Ox
+base system.
+.It Sy "unknown architecture"
+.Pq mdoc , Ox , Nx
+The third argument of the
+.Ic \&Dt
+macro does not match any of the architectures this operating system
+is running on.
+.It Sy "operating system explicitly specified"
+.Pq mdoc , Ox , Nx
+The
+.Ic \&Os
+macro has an argument.
+In the base system, it is conventionally left blank.
+.It Sy "RCS id missing"
+.Pq Ox , Nx
+The manual page lacks the comment line with the RCS identifier
+generated by CVS
+.Ic OpenBSD
+or
+.Ic NetBSD
+keyword substitution as conventionally used in these operating systems.
+.It Sy "referenced manual not found"
+.Pq mdoc
+An
+.Ic \&Xr
+macro references a manual page that is not found in the base system.
+The path to look for base system manuals is configurable at compile
+time and defaults to
+.Pa /usr/share/man : /usr/X11R6/man .
+.El
+.Ss Style suggestions
+.Bl -ohang
+.It Sy "legacy man(7) date format"
+.Pq mdoc
+The
+.Ic \&Dd
+macro uses the legacy
+.Xr man 7
+date format
+.Dq yyyy-dd-mm .
+Consider using the conventional
+.Xr mdoc 7
+date format
+.Dq "Month dd, yyyy"
+instead.
+.It Sy "lower case character in document title"
+.Pq mdoc , man
+The title is still used as given in the
+.Ic \&Dt
+or
+.Ic \&TH
+macro.
+.It Sy "duplicate RCS id"
+A single manual page contains two copies of the RCS identifier for
+the same operating system.
+Consider deleting the later instance and moving the first one up
+to the top of the page.
+.It Sy "typo in section name"
+.Pq mdoc
+Fuzzy string matching revealed that the argument of an
+.Ic \&Sh
+macro is similar, but not identical to a standard section name.
+.It Sy "unterminated quoted argument"
+.Pq roff
+Macro arguments can be enclosed in double quote characters
+such that space characters and macro names contained in the quoted
+argument need not be escaped.
+The closing quote of the last argument of a macro can be omitted.
+However, omitting it is not recommended because it makes the code
+harder to read.
 .It Sy "useless macro"
 .Pq mdoc
 A
 .Ic \&Bt ,
 .Ic \&Tn ,
 or
 .Ic \&Ud
 macro was found.
 Simply delete it: it serves no useful purpose.
 .It Sy "consider using OS macro"
 .Pq mdoc
 A string was found in plain text or in a
 .Ic \&Bx
 macro that could be represented using
 .Ic \&Ox ,
 .Ic \&Nx ,
 .Ic \&Fx ,
 or
 .Ic \&Dx .
 .It Sy "errnos out of order"
 .Pq mdoc, Nx
 The
 .Ic \&Er
 items in a
 .Ic \&Bl
 list are not in alphabetical order.
 .It Sy "duplicate errno"
 .Pq mdoc, Nx
 A
 .Ic \&Bl
 list contains two consecutive
 .Ic \&It
 entries describing the same
 .Ic \&Er
 number.
-.It Sy "description line ends with a full stop"
+.It Sy "trailing delimiter"
 .Pq mdoc
-Do not use punctuation at the end of an
-.Ic \&Nd
-block.
+The last argument of an
+.Ic \&Ex , \&Fo , \&Nd , \&Nm , \&Os , \&Sh , \&Ss , \&St ,
+or
+.Ic \&Sx
+macro ends with a trailing delimiter.
+This is usually bad style and often indicates typos.
+Most likely, the delimiter can be removed.
+.It Sy "no blank before trailing delimiter"
+.Pq mdoc
+The last argument of a macro that supports trailing delimiter
+arguments is longer than one byte and ends with a trailing delimiter.
+Consider inserting a blank such that the delimiter becomes a separate
+argument, thus moving it out of the scope of the macro.
+.It Sy "fill mode already enabled, skipping"
+.Pq man
+A
+.Ic \&fi
+request occurs even though the document is still in fill mode,
+or already switched back to fill mode.
+It has no effect.
+.It Sy "fill mode already disabled, skipping"
+.Pq man
+An
+.Ic \&nf
+request occurs even though the document already switched to no-fill mode
+and did not switch back to fill mode yet.
+It has no effect.
+.It Sy "function name without markup"
+.Pq mdoc
+A word followed by an empty pair of parentheses occurs on a text line.
+Consider using an
+.Ic \&Fn
+or
+.Ic \&Xr
+macro.
+.It Sy "whitespace at end of input line"
+.Pq mdoc , man , roff
+Whitespace at the end of input lines is almost never semantically
+significant \(em but in the odd case where it might be, it is
+extremely confusing when reviewing and maintaining documents.
+.It Sy "bad comment style"
+.Pq roff
+Comment lines start with a dot, a backslash, and a double-quote character.
+The
+.Nm
+utility treats the line as a comment line even without the backslash,
+but leaving out the backslash might not be portable.
 .El
 .Ss Warnings related to the document prologue
 .Bl -ohang
 .It Sy "missing manual title, using UNTITLED"
 .Pq mdoc
 A
 .Ic \&Dt
 macro has no arguments, or there is no
 .Ic \&Dt
 macro before the first non-prologue macro.
 .It Sy "missing manual title, using \(dq\(dq"
 .Pq man
 There is no
 .Ic \&TH
 macro, or it has no arguments.
-.It Sy "lower case character in document title"
-.Pq mdoc , man
-The title is still used as given in the
-.Ic \&Dt
-or
-.Ic \&TH
-macro.
 .It Sy "missing manual section, using \(dq\(dq"
 .Pq mdoc , man
 A
 .Ic \&Dt
 or
 .Ic \&TH
 macro lacks the mandatory section argument.
 .It Sy "unknown manual section"
 .Pq mdoc
 The section number in a
 .Ic \&Dt
 line is invalid, but still used.
 .It Sy "missing date, using today's date"
 .Pq mdoc, man
 The document was parsed as
 .Xr mdoc 7
 and it has no
 .Ic \&Dd
 macro, or the
 .Ic \&Dd
 macro has no arguments or only empty arguments;
 or the document was parsed as
 .Xr man 7
 and it has no
 .Ic \&TH
 macro, or the
 .Ic \&TH
 macro has less than three arguments or its third argument is empty.
 .It Sy "cannot parse date, using it verbatim"
 .Pq mdoc , man
 The date given in a
 .Ic \&Dd
 or
 .Ic \&TH
 macro does not follow the conventional format.
+.It Sy "date in the future, using it anyway"
+.Pq mdoc , man
+The date given in a
+.Ic \&Dd
+or
+.Ic \&TH
+macro is more than a day ahead of the current system
+.Xr time 3 .
 .It Sy "missing Os macro, using \(dq\(dq"
 .Pq mdoc
 The default or current system is not shown in this case.
-.It Sy "duplicate prologue macro"
-.Pq mdoc
-One of the prologue macros occurs more than once.
-The last instance overrides all previous ones.
 .It Sy "late prologue macro"
 .Pq mdoc
 A
 .Ic \&Dd
 or
 .Ic \&Os
 macro occurs after some non-prologue macro, but still takes effect.
-.It Sy "skipping late title macro"
-.Pq mdoc
-The
-.Ic \&Dt
-macro appears after the first non-prologue macro.
-Traditional formatters cannot handle this because
-they write the page header before parsing the document body.
-Even though this technical restriction does not apply to
-.Nm ,
-traditional semantics is preserved.
-The late macro is discarded including its arguments.
 .It Sy "prologue macros out of order"
 .Pq mdoc
 The prologue macros are not given in the conventional order
 .Ic \&Dd ,
 .Ic \&Dt ,
 .Ic \&Os .
 All three macros are used even when given in another order.
 .El
 .Ss Warnings regarding document structure
 .Bl -ohang
 .It Sy ".so is fragile, better use ln(1)"
 .Pq roff
 Including files only works when the parser program runs with the correct
 current working directory.
 .It Sy "no document body"
 .Pq mdoc , man
 The document body contains neither text nor macros.
 An empty document is shown, consisting only of a header and a footer line.
 .It Sy "content before first section header"
 .Pq mdoc , man
 Some macros or text precede the first
 .Ic \&Sh
 or
 .Ic \&SH
 section header.
 The offending macros and text are parsed and added to the top level
 of the syntax tree, outside any section block.
 .It Sy "first section is not NAME"
 .Pq mdoc
 The argument of the first
 .Ic \&Sh
 macro is not
 .Sq NAME .
 This may confuse
 .Xr makewhatis 8
 and
 .Xr apropos 1 .
 .It Sy "NAME section without Nm before Nd"
 .Pq mdoc
 The NAME section does not contain any
 .Ic \&Nm
 child macro before the first
 .Ic \&Nd
 macro.
 .It Sy "NAME section without description"
 .Pq mdoc
 The NAME section lacks the mandatory
 .Ic \&Nd
 child macro.
 .It Sy "description not at the end of NAME"
 .Pq mdoc
 The NAME section does contain an
 .Ic \&Nd
 child macro, but other content follows it.
 .It Sy "bad NAME section content"
 .Pq mdoc
 The NAME section contains plain text or macros other than
 .Ic \&Nm
 and
 .Ic \&Nd .
 .It Sy "missing comma before name"
 .Pq mdoc
 The NAME section contains an
 .Ic \&Nm
 macro that is neither the first one nor preceded by a comma.
 .It Sy "missing description line, using \(dq\(dq"
 .Pq mdoc
 The
 .Ic \&Nd
 macro lacks the required argument.
 The title line of the manual will end after the dash.
 .It Sy "description line outside NAME section"
 .Pq mdoc
 An
 .Ic \&Nd
 macro appears outside the NAME section.
 The arguments are printed anyway and the following text is used for
 .Xr apropos 1 ,
 but none of that behaviour is portable.
 .It Sy "sections out of conventional order"
 .Pq mdoc
 A standard section occurs after another section it usually precedes.
 All section titles are used as given,
 and the order of sections is not changed.
 .It Sy "duplicate section title"
 .Pq mdoc
 The same standard section title occurs more than once.
 .It Sy "unexpected section"
 .Pq mdoc
 A standard section header occurs in a section of the manual
 where it normally isn't useful.
+.It Sy "cross reference to self"
+.Pq mdoc
+An
+.Ic \&Xr
+macro refers to a name and section matching the section of the present
+manual page and a name mentioned in an
+.Ic \&Nm
+macro in the NAME or SYNOPSIS section, or in an
+.Ic \&Fn
+or
+.Ic \&Fo
+macro in the SYNOPSIS.
+Consider using
+.Ic \&Nm
+or
+.Ic \&Fn
+instead of
+.Ic \&Xr .
 .It Sy "unusual Xr order"
 .Pq mdoc
 In the SEE ALSO section, an
 .Ic \&Xr
 macro with a lower section number follows one with a higher number,
 or two
 .Ic \&Xr
 macros referring to the same section are out of alphabetical order.
 .It Sy "unusual Xr punctuation"
 .Pq mdoc
 In the SEE ALSO section, punctuation between two
 .Ic \&Xr
 macros differs from a single comma, or there is trailing punctuation
 after the last
 .Ic \&Xr
 macro.
 .It Sy "AUTHORS section without An macro"
 .Pq mdoc
 An AUTHORS sections contains no
 .Ic \&An
 macros, or only empty ones.
 Probably, there are author names lacking markup.
 .El
 .Ss "Warnings related to macros and nesting"
 .Bl -ohang
 .It Sy "obsolete macro"
 .Pq mdoc
 See the
 .Xr mdoc 7
 manual for replacements.
 .It Sy "macro neither callable nor escaped"
 .Pq mdoc
 The name of a macro that is not callable appears on a macro line.
 It is printed verbatim.
 If the intention is to call it, move it to its own input line;
 otherwise, escape it by prepending
 .Sq \e& .
 .It Sy "skipping paragraph macro"
 In
 .Xr mdoc 7
 documents, this happens
 .Bl -dash -compact
 .It
 at the beginning and end of sections and subsections
 .It
 right before non-compact lists and displays
 .It
 at the end of items in non-column, non-compact lists
 .It
 and for multiple consecutive paragraph macros.
 .El
 In
 .Xr man 7
 documents, it happens
 .Bl -dash -compact
 .It
 for empty
 .Ic \&P ,
 .Ic \&PP ,
 and
 .Ic \&LP
 macros
 .It
 for
 .Ic \&IP
 macros having neither head nor body arguments
 .It
 for
 .Ic \&br
 or
 .Ic \&sp
 right after
 .Ic \&SH
 or
 .Ic \&SS
 .El
 .It Sy "moving paragraph macro out of list"
 .Pq mdoc
 A list item in a
 .Ic \&Bl
 list contains a trailing paragraph macro.
 The paragraph macro is moved after the end of the list.
 .It Sy "skipping no-space macro"
 .Pq mdoc
 An input line begins with an
 .Ic \&Ns
-macro.
+macro, or the next argument after an
+.Ic \&Ns
+macro is an isolated closing delimiter.
 The macro is ignored.
 .It Sy "blocks badly nested"
 .Pq mdoc
 If two blocks intersect, one should completely contain the other.
 Otherwise, rendered output is likely to look strange in any output
 format, and rendering in SGML-based output formats is likely to be
 outright wrong because such languages do not support badly nested
 blocks at all.
 Typical examples of badly nested blocks are
 .Qq Ic \&Ao \&Bo \&Ac \&Bc
 and
 .Qq Ic \&Ao \&Bq \&Ac .
 In these examples,
 .Ic \&Ac
 breaks
 .Ic \&Bo
 and
 .Ic \&Bq ,
 respectively.
 .It Sy "nested displays are not portable"
 .Pq mdoc
 A
 .Ic \&Bd ,
 .Ic \&D1 ,
 or
 .Ic \&Dl
 display occurs nested inside another
 .Ic \&Bd
 display.
 This works with
 .Nm ,
 but fails with most other implementations.
 .It Sy "moving content out of list"
 .Pq mdoc
 A
 .Ic \&Bl
 list block contains text or macros before the first
 .Ic \&It
 macro.
 The offending children are moved before the beginning of the list.
-.It Sy "fill mode already enabled, skipping"
-.Pq man
-A
-.Ic \&fi
-request occurs even though the document is still in fill mode,
-or already switched back to fill mode.
-It has no effect.
-.It Sy "fill mode already disabled, skipping"
-.Pq man
-An
-.Ic \&nf
-request occurs even though the document already switched to no-fill mode
-and did not switch back to fill mode yet.
-It has no effect.
+.It Sy "first macro on line"
+Inside a
+.Ic \&Bl Fl column
+list, a
+.Ic \&Ta
+macro occurs as the first macro on a line, which is not portable.
 .It Sy "line scope broken"
 .Pq man
 While parsing the next-line scope of the previous macro,
 another macro is found that prematurely terminates the previous one.
 The previous, interrupted macro is deleted from the parse tree.
 .El
 .Ss "Warnings related to missing arguments"
 .Bl -ohang
 .It Sy "skipping empty request"
 .Pq roff , eqn
 The macro name is missing from a macro definition request,
 or an
 .Xr eqn 7
 control statement or operation keyword lacks its required argument.
 .It Sy "conditional request controls empty scope"
 .Pq roff
 A conditional request is only useful if any of the following
 follows it on the same logical input line:
 .Bl -dash -compact
 .It
 The
 .Sq \e{
 keyword to open a multi-line scope.
 .It
 A request or macro or some text, resulting in a single-line scope.
 .It
 The immediate end of the logical line without any intervening whitespace,
 resulting in next-line scope.
 .El
 Here, a conditional request is followed by trailing whitespace only,
 and there is no other content on its logical input line.
 Note that it doesn't matter whether the logical input line is split
 across multiple physical input lines using
 .Sq \e
 line continuation characters.
 This is one of the rare cases
 where trailing whitespace is syntactically significant.
 The conditional request controls a scope containing whitespace only,
 so it is unlikely to have a significant effect,
 except that it may control a following
 .Ic \&el
 clause.
 .It Sy "skipping empty macro"
 .Pq mdoc
 The indicated macro has no arguments and hence no effect.
 .It Sy "empty block"
 .Pq mdoc , man
 A
 .Ic \&Bd ,
 .Ic \&Bk ,
 .Ic \&Bl ,
 .Ic \&D1 ,
 .Ic \&Dl ,
+.Ic \&MT ,
 .Ic \&RS ,
 or
 .Ic \&UR
 block contains nothing in its body and will produce no output.
 .It Sy "empty argument, using 0n"
 .Pq mdoc
 The required width is missing after
 .Ic \&Bd
 or
 .Ic \&Bl
 .Fl offset
 or
 .Fl width .
 .It Sy "missing display type, using -ragged"
 .Pq mdoc
 The
 .Ic \&Bd
 macro is invoked without the required display type.
 .It Sy "list type is not the first argument"
 .Pq mdoc
 In a
 .Ic \&Bl
 macro, at least one other argument precedes the type argument.
 The
 .Nm
 utility copes with any argument order, but some other
 .Xr mdoc 7
 implementations do not.
 .It Sy "missing -width in -tag list, using 8n"
 .Pq mdoc
 Every
 .Ic \&Bl
 macro having the
 .Fl tag
 argument requires
 .Fl width ,
 too.
 .It Sy "missing utility name, using \(dq\(dq"
 .Pq mdoc
 The
 .Ic \&Ex Fl std
 macro is called without an argument before
 .Ic \&Nm
 has first been called with an argument.
 .It Sy "missing function name, using \(dq\(dq"
 .Pq mdoc
 The
 .Ic \&Fo
 macro is called without an argument.
 No function name is printed.
 .It Sy "empty head in list item"
 .Pq mdoc
 In a
 .Ic \&Bl
 .Fl diag ,
 .Fl hang ,
 .Fl inset ,
 .Fl ohang ,
 or
 .Fl tag
 list, an
 .Ic \&It
 macro lacks the required argument.
 The item head is left empty.
 .It Sy "empty list item"
 .Pq mdoc
 In a
 .Ic \&Bl
 .Fl bullet ,
 .Fl dash ,
 .Fl enum ,
 or
 .Fl hyphen
 list, an
 .Ic \&It
 block is empty.
 An empty list item is shown.
+.It Sy "missing argument, using next line"
+.Pq mdoc
+An
+.Ic \&It
+macro in a
+.Ic \&Bd Fl column
+list has no arguments.
+While
+.Nm
+uses the text or macros of the following line, if any, for the cell,
+other formatters may misformat the list.
 .It Sy "missing font type, using \efR"
 .Pq mdoc
 A
 .Ic \&Bf
 macro has no argument.
 It switches to the default font.
 .It Sy "unknown font type, using \efR"
 .Pq mdoc
 The
 .Ic \&Bf
 argument is invalid.
 The default font is used instead.
 .It Sy "nothing follows prefix"
 .Pq mdoc
 A
 .Ic \&Pf
 macro has no argument, or only one argument and no macro follows
 on the same input line.
 This defeats its purpose; in particular, spacing is not suppressed
 before the text or macros following on the next input line.
 .It Sy "empty reference block"
 .Pq mdoc
 An
 .Ic \&Rs
 macro is immediately followed by an
 .Ic \&Re
 macro on the next input line.
 Such an empty block does not produce any output.
 .It Sy "missing section argument"
 .Pq mdoc
 An
 .Ic \&Xr
 macro lacks its second, section number argument.
 The first argument, i.e. the name, is printed, but without subsequent
 parentheses.
 .It Sy "missing -std argument, adding it"
 .Pq mdoc
 An
 .Ic \&Ex
 or
 .Ic \&Rv
 macro lacks the required
 .Fl std
 argument.
 The
 .Nm
 utility assumes
 .Fl std
 even when it is not specified, but other implementations may not.
 .It Sy "missing option string, using \(dq\(dq"
 .Pq man
 The
 .Ic \&OP
 macro is invoked without any argument.
 An empty pair of square brackets is shown.
 .It Sy "missing resource identifier, using \(dq\(dq"
 .Pq man
 The
+.Ic \&MT
+or
 .Ic \&UR
 macro is invoked without any argument.
 An empty pair of angle brackets is shown.
 .It Sy "missing eqn box, using \(dq\(dq"
 .Pq eqn
 A diacritic mark or a binary operator is found,
 but there is nothing to the left of it.
 An empty box is inserted.
 .El
 .Ss "Warnings related to bad macro arguments"
 .Bl -ohang
-.It Sy "unterminated quoted argument"
-.Pq roff
-Macro arguments can be enclosed in double quote characters
-such that space characters and macro names contained in the quoted
-argument need not be escaped.
-The closing quote of the last argument of a macro can be omitted.
-However, omitting it is not recommended because it makes the code
-harder to read.
 .It Sy "duplicate argument"
 .Pq mdoc
 A
 .Ic \&Bd
 or
 .Ic \&Bl
 macro has more than one
 .Fl compact ,
 more than one
 .Fl offset ,
 or more than one
 .Fl width
 argument.
 All but the last instances of these arguments are ignored.
 .It Sy "skipping duplicate argument"
 .Pq mdoc
 An
 .Ic \&An
 macro has more than one
 .Fl split
 or
 .Fl nosplit
 argument.
 All but the first of these arguments are ignored.
 .It Sy "skipping duplicate display type"
 .Pq mdoc
 A
 .Ic \&Bd
 macro has more than one type argument; the first one is used.
 .It Sy "skipping duplicate list type"
 .Pq mdoc
 A
 .Ic \&Bl
 macro has more than one type argument; the first one is used.
 .It Sy "skipping -width argument"
 .Pq mdoc
 A
 .Ic \&Bl
 .Fl column ,
 .Fl diag ,
 .Fl ohang ,
 .Fl inset ,
 or
 .Fl item
 list has a
 .Fl width
 argument.
 That has no effect.
 .It Sy "wrong number of cells"
 In a line of a
 .Ic \&Bl Fl column
 list, the number of tabs or
 .Ic \&Ta
 macros is less than the number expected from the list header line
 or exceeds the expected number by more than one.
 Missing cells remain empty, and all cells exceeding the number of
 columns are joined into one single cell.
 .It Sy "unknown AT&T UNIX version"
 .Pq mdoc
 An
 .Ic \&At
 macro has an invalid argument.
 It is used verbatim, with
 .Qq "AT&T UNIX "
 prefixed to it.
 .It Sy "comma in function argument"
 .Pq mdoc
 An argument of an
 .Ic \&Fa
 or
 .Ic \&Fn
 macro contains a comma; it should probably be split into two arguments.
 .It Sy "parenthesis in function name"
 .Pq mdoc
 The first argument of an
 .Ic \&Fc
 or
 .Ic \&Fn
 macro contains an opening or closing parenthesis; that's probably wrong,
 parentheses are added automatically.
 .It Sy "unknown library name"
 .Pq mdoc, not on Ox
 An
 .Ic \&Lb
 macro has an unknown name argument and will be rendered as
 .Qq library Dq Ar name .
 .It Sy "invalid content in Rs block"
 .Pq mdoc
 An
 .Ic \&Rs
 block contains plain text or non-% macros.
 The bogus content is left in the syntax tree.
 Formatting may be poor.
 .It Sy "invalid Boolean argument"
 .Pq mdoc
 An
 .Ic \&Sm
 macro has an argument other than
 .Cm on
 or
 .Cm off .
 The invalid argument is moved out of the macro, which leaves the macro
 empty, causing it to toggle the spacing mode.
 .It Sy "unknown font, skipping request"
 .Pq man , tbl
 A
 .Xr roff 7
 .Ic \&ft
 request or a
 .Xr tbl 7
 .Ic \&f
 layout modifier has an unknown
 .Ar font
 argument.
 .It Sy "odd number of characters in request"
 .Pq roff
 A
 .Ic \&tr
 request contains an odd number of characters.
 The last character is mapped to the blank character.
 .El
 .Ss "Warnings related to plain text"
 .Bl -ohang
 .It Sy "blank line in fill mode, using .sp"
 .Pq mdoc
 The meaning of blank input lines is only well-defined in non-fill mode:
 In fill mode, line breaks of text input lines are not supposed to be
 significant.
 However, for compatibility with groff, blank lines in fill mode
 are replaced with
 .Ic \&sp
 requests.
 .It Sy "tab in filled text"
 .Pq mdoc , man
 The meaning of tab characters is only well-defined in non-fill mode:
 In fill mode, whitespace is not supposed to be significant
 on text input lines.
 As an implementation dependent choice, tab characters on text lines
 are passed through to the formatters in any case.
 Given that the text before the tab character will be filled,
 it is hard to predict which tab stop position the tab will advance to.
-.It Sy "whitespace at end of input line"
-.Pq mdoc , man , roff
-Whitespace at the end of input lines is almost never semantically
-significant \(em but in the odd case where it might be, it is
-extremely confusing when reviewing and maintaining documents.
 .It Sy "new sentence, new line"
 .Pq mdoc
 A new sentence starts in the middle of a text line.
 Start it on a new input line to help formatters produce correct spacing.
-.It Sy "bad comment style"
-.Pq roff
-Comment lines start with a dot, a backslash, and a double-quote character.
-The
-.Nm
-utility treats the line as a comment line even without the backslash,
-but leaving out the backslash might not be portable.
 .It Sy "invalid escape sequence"
 .Pq roff
 An escape sequence has an invalid opening argument delimiter, lacks the
 closing argument delimiter, or the argument has too few characters.
 If the argument is incomplete,
 .Ic \e*
 and
 .Ic \en
 expand to an empty string,
 .Ic \eB
 to the digit
 .Sq 0 ,
 and
 .Ic \ew
 to the length of the incomplete argument.
 All other invalid escape sequences are ignored.
 .It Sy "undefined string, using \(dq\(dq"
 .Pq roff
 If a string is used without being defined before,
 its value is implicitly set to the empty string.
 However, defining strings explicitly before use
 keeps the code more readable.
 .El
 .Ss "Warnings related to tables"
 .Bl -ohang
 .It Sy "tbl line starts with span"
 .Pq tbl
 The first cell in a table layout line is a horizontal span
 .Pq Sq Cm s .
 Data provided for this cell is ignored, and nothing is printed in the cell.
 .It Sy "tbl column starts with span"
 .Pq tbl
 The first line of a table layout specification
 requests a vertical span
 .Pq Sq Cm ^ .
 Data provided for this cell is ignored, and nothing is printed in the cell.
 .It Sy "skipping vertical bar in tbl layout"
 .Pq tbl
 A table layout specification contains more than two consecutive vertical bars.
 A double bar is printed, all additional bars are discarded.
 .El
 .Ss "Errors related to tables"
 .Bl -ohang
 .It Sy "non-alphabetic character in tbl options"
 .Pq tbl
 The table options line contains a character other than a letter,
 blank, or comma where the beginning of an option name is expected.
 The character is ignored.
 .It Sy "skipping unknown tbl option"
 .Pq tbl
 The table options line contains a string of letters that does not
 match any known option name.
 The word is ignored.
 .It Sy "missing tbl option argument"
 .Pq tbl
 A table option that requires an argument is not followed by an
 opening parenthesis, or the opening parenthesis is immediately
 followed by a closing parenthesis.
 The option is ignored.
 .It Sy "wrong tbl option argument size"
 .Pq tbl
 A table option argument contains an invalid number of characters.
 Both the option and the argument are ignored.
 .It Sy "empty tbl layout"
 .Pq tbl
 A table layout specification is completely empty,
 specifying zero lines and zero columns.
 As a fallback, a single left-justified column is used.
 .It Sy "invalid character in tbl layout"
 .Pq tbl
 A table layout specification contains a character that can neither
 be interpreted as a layout key character nor as a layout modifier,
 or a modifier precedes the first key.
 The invalid character is discarded.
 .It Sy "unmatched parenthesis in tbl layout"
 .Pq tbl
 A table layout specification contains an opening parenthesis,
 but no matching closing parenthesis.
 The rest of the input line, starting from the parenthesis, has no effect.
 .It Sy "tbl without any data cells"
 .Pq tbl
 A table does not contain any data cells.
 It will probably produce no output.
 .It Sy "ignoring data in spanned tbl cell"
 .Pq tbl
 A table cell is marked as a horizontal span
 .Pq Sq Cm s
 or vertical span
 .Pq Sq Cm ^
 in the table layout, but it contains data.
 The data is ignored.
 .It Sy "ignoring extra tbl data cells"
 .Pq tbl
 A data line contains more cells than the corresponding layout line.
 The data in the extra cells is ignored.
 .It Sy "data block open at end of tbl"
 .Pq tbl
 A data block is opened with
 .Cm T{ ,
 but never closed with a matching
 .Cm T} .
 The remaining data lines of the table are all put into one cell,
 and any remaining cells stay empty.
 .El
 .Ss "Errors related to roff, mdoc, and man code"
 .Bl -ohang
+.It Sy "duplicate prologue macro"
+.Pq mdoc
+One of the prologue macros occurs more than once.
+The last instance overrides all previous ones.
+.It Sy "skipping late title macro"
+.Pq mdoc
+The
+.Ic \&Dt
+macro appears after the first non-prologue macro.
+Traditional formatters cannot handle this because
+they write the page header before parsing the document body.
+Even though this technical restriction does not apply to
+.Nm ,
+traditional semantics is preserved.
+The late macro is discarded including its arguments.
 .It Sy "input stack limit exceeded, infinite loop?"
 .Pq roff
 Explicit recursion limits are implemented for the following features,
 in order to prevent infinite loops:
 .Bl -dash -compact
 .It
 expansion of nested escape sequences
 including expansion of strings and number registers,
 .It
 expansion of nested user-defined macros,
 .It
 and
 .Ic \&so
 file inclusion.
 .El
 When a limit is hit, the output is incorrect, typically losing
 some content, but the parser can continue.
 .It Sy "skipping bad character"
 .Pq mdoc , man , roff
 The input file contains a byte that is not a printable
 .Xr ascii 7
 character.
 The message mentions the character number.
 The offending byte is replaced with a question mark
 .Pq Sq \&? .
 Consider editing the input file to replace the byte with an ASCII
 transliteration of the intended character.
 .It Sy "skipping unknown macro"
 .Pq mdoc , man , roff
 The first identifier on a request or macro line is neither recognized as a
 .Xr roff 7
 request, nor as a user-defined macro, nor, respectively, as an
 .Xr mdoc 7
 or
 .Xr man 7
 macro.
 It may be mistyped or unsupported.
 The request or macro is discarded including its arguments.
 .It Sy "skipping insecure request"
 .Pq roff
 An input file attempted to run a shell command
 or to read or write an external file.
 Such attempts are denied for security reasons.
 .It Sy "skipping item outside list"
 .Pq mdoc , eqn
 An
 .Ic \&It
 macro occurs outside any
 .Ic \&Bl
 list, or an
 .Xr eqn 7
 .Ic above
 delimiter occurs outside any pile.
 It is discarded including its arguments.
 .It Sy "skipping column outside column list"
 .Pq mdoc
 A
 .Ic \&Ta
 macro occurs outside any
 .Ic \&Bl Fl column
 block.
 It is discarded including its arguments.
 .It Sy "skipping end of block that is not open"
 .Pq mdoc , man , eqn , tbl , roff
 Various syntax elements can only be used to explicitly close blocks
 that have previously been opened.
 An
 .Xr mdoc 7
 block closing macro, a
 .Xr man 7
-.Ic \&RE
+.Ic \&ME , \&RE
 or
 .Ic \&UE
 macro, an
 .Xr eqn 7
 right delimiter or closing brace, or the end of an equation, table, or
 .Xr roff 7
 conditional request is encountered but no matching block is open.
 The offending request or macro is discarded.
 .It Sy "fewer RS blocks open, skipping"
 .Pq man
 The
 .Ic \&RE
 macro is invoked with an argument, but less than the specified number of
 .Ic \&RS
 blocks is open.
 The
 .Ic \&RE
 macro is discarded.
 .It Sy "inserting missing end of block"
 .Pq mdoc , tbl
 Various
 .Xr mdoc 7
 macros as well as tables require explicit closing by dedicated macros.
 A block that doesn't support bad nesting
 ends before all of its children are properly closed.
 The open child nodes are closed implicitly.
 .It Sy "appending missing end of block"
 .Pq mdoc , man , eqn , tbl , roff
 At the end of the document, an explicit
 .Xr mdoc 7
 block, a
 .Xr man 7
 next-line scope or
-.Ic \&RS
+.Ic \&MT , \&RS
 or
 .Ic \&UR
 block, an equation, table, or
 .Xr roff 7
 conditional or ignore block is still open.
 The open block is closed implicitly.
 .It Sy "escaped character not allowed in a name"
 .Pq roff
 Macro, string and register identifiers consist of printable,
 non-whitespace ASCII characters.
 Escape sequences and characters and strings expressed in terms of them
 cannot form part of a name.
 The first argument of an
 .Ic \&am ,
 .Ic \&as ,
 .Ic \&de ,
 .Ic \&ds ,
 .Ic \&nr ,
 or
 .Ic \&rr
 request, or any argument of an
 .Ic \&rm
 request, or the name of a request or user defined macro being called,
 is terminated by an escape sequence.
 In the cases of
 .Ic \&as ,
 .Ic \&ds ,
 and
 .Ic \&nr ,
 the request has no effect at all.
 In the cases of
 .Ic \&am ,
 .Ic \&de ,
 .Ic \&rr ,
 and
 .Ic \&rm ,
 what was parsed up to this point is used as the arguments to the request,
 and the rest of the input line is discarded including the escape sequence.
 When parsing for a request or a user-defined macro name to be called,
 only the escape sequence is discarded.
 The characters preceding it are used as the request or macro name,
 the characters following it are used as the arguments to the request or macro.
 .It Sy "NOT IMPLEMENTED: Bd -file"
 .Pq mdoc
 For security reasons, the
 .Ic \&Bd
 macro does not support the
 .Fl file
 argument.
 By requesting the inclusion of a sensitive file, a malicious document
 might otherwise trick a privileged user into inadvertently displaying
 the file on the screen, revealing the file content to bystanders.
 The argument is ignored including the file name following it.
 .It Sy "skipping display without arguments"
 .Pq mdoc
 A
 .Ic \&Bd
 block macro does not have any arguments.
 The block is discarded, and the block content is displayed in
 whatever mode was active before the block.
 .It Sy "missing list type, using -item"
 .Pq mdoc
 A
 .Ic \&Bl
 macro fails to specify the list type.
 .It Sy "argument is not numeric, using 1"
 .Pq roff
 The argument of a
 .Ic \&ce
 request is not a number.
 .It Sy "missing manual name, using \(dq\(dq"
 .Pq mdoc
 The first call to
 .Ic \&Nm ,
 or any call in the NAME section, lacks the required argument.
 .It Sy "uname(3) system call failed, using UNKNOWN"
 .Pq mdoc
 The
 .Ic \&Os
 macro is called without arguments, and the
 .Xr uname 3
 system call failed.
 As a workaround,
 .Nm
 can be compiled with
 .Sm off
 .Fl D Cm OSNAME=\(dq\e\(dq Ar string Cm \e\(dq\(dq .
 .Sm on
 .It Sy "unknown standard specifier"
 .Pq mdoc
 An
 .Ic \&St
 macro has an unknown argument and is discarded.
 .It Sy "skipping request without numeric argument"
 .Pq roff , eqn
 An
 .Ic \&it
 request or an
 .Xr eqn 7
 .Ic \&size
 or
 .Ic \&gsize
 statement has a non-numeric or negative argument or no argument at all.
 The invalid request or statement is ignored.
 .It Sy "NOT IMPLEMENTED: .so with absolute path or \(dq..\(dq"
 .Pq roff
 For security reasons,
 .Nm
 allows
 .Ic \&so
 file inclusion requests only with relative paths
 and only without ascending to any parent directory.
 By requesting the inclusion of a sensitive file, a malicious document
 might otherwise trick a privileged user into inadvertently displaying
 the file on the screen, revealing the file content to bystanders.
 .Nm
 only shows the path as it appears behind
 .Ic \&so .
 .It Sy ".so request failed"
 .Pq roff
 Servicing a
 .Ic \&so
 request requires reading an external file, but the file could not be
 opened.
 .Nm
 only shows the path as it appears behind
 .Ic \&so .
 .It Sy "skipping all arguments"
 .Pq mdoc , man , eqn , roff
 An
 .Xr mdoc 7
 .Ic \&Bt ,
 .Ic \&Ed ,
 .Ic \&Ef ,
 .Ic \&Ek ,
 .Ic \&El ,
 .Ic \&Lp ,
 .Ic \&Pp ,
 .Ic \&Re ,
 .Ic \&Rs ,
 or
 .Ic \&Ud
 macro, an
 .Ic \&It
 macro in a list that don't support item heads, a
 .Xr man 7
 .Ic \&LP ,
 .Ic \&P ,
 or
 .Ic \&PP
 macro, an
 .Xr eqn 7
 .Ic \&EQ
 or
 .Ic \&EN
 macro, or a
 .Xr roff 7
 .Ic \&br ,
 .Ic \&fi ,
 or
 .Ic \&nf
 request or
 .Sq \&..
 block closing request is invoked with at least one argument.
 All arguments are ignored.
 .It Sy "skipping excess arguments"
 .Pq mdoc , man , roff
 A macro or request is invoked with too many arguments:
 .Bl -dash -offset 2n -width 2n -compact
 .It
 .Ic \&Fo ,
+.Ic \&MT ,
 .Ic \&PD ,
 .Ic \&RS ,
 .Ic \&UR ,
 .Ic \&ft ,
 or
 .Ic \&sp
 with more than one argument
 .It
 .Ic \&An
 with another argument after
 .Fl split
 or
 .Fl nosplit
 .It
 .Ic \&RE
 with more than one argument or with a non-integer argument
 .It
 .Ic \&OP
 or a request of the
 .Ic \&de
 family with more than two arguments
 .It
 .Ic \&Dt
 with more than three arguments
 .It
 .Ic \&TH
 with more than five arguments
 .It
 .Ic \&Bd ,
 .Ic \&Bk ,
 or
 .Ic \&Bl
 with invalid arguments
 .El
 The excess arguments are ignored.
 .El
 .Ss Unsupported features
 .Bl -ohang
 .It Sy "input too large"
 .Pq mdoc , man
 Currently,
 .Nm
 cannot handle input files larger than its arbitrary size limit
 of 2^31 bytes (2 Gigabytes).
 Since useful manuals are always small, this is not a problem in practice.
 Parsing is aborted as soon as the condition is detected.
 .It Sy "unsupported control character"
 .Pq roff
 An ASCII control character supported by other
 .Xr roff 7
 implementations but not by
 .Nm
 was found in an input file.
 It is replaced by a question mark.
 .It Sy "unsupported roff request"
 .Pq roff
 An input file contains a
 .Xr roff 7
 request supported by GNU troff or Heirloom troff but not by
 .Nm ,
 and it is likely that this will cause information loss
 or considerable misformatting.
 .It Sy "eqn delim option in tbl"
 .Pq eqn , tbl
 The options line of a table defines equation delimiters.
 Any equation source code contained in the table will be printed unformatted.
 .It Sy "unsupported table layout modifier"
 .Pq tbl
 A table layout specification contains an
 .Sq Cm m
 modifier.
 The modifier is discarded.
 .It Sy "ignoring macro in table"
 .Pq tbl , mdoc , man
 A table contains an invocation of an
 .Xr mdoc 7
 or
 .Xr man 7
 macro or of an undefined macro.
 The macro is ignored, and its arguments are handled
 as if they were a text line.
 .El
 .Sh SEE ALSO
 .Xr apropos 1 ,
 .Xr man 1 ,
 .Xr eqn 7 ,
 .Xr man 7 ,
 .Xr mandoc_char 7 ,
 .Xr mdoc 7 ,
 .Xr roff 7 ,
 .Xr tbl 7
 .Sh HISTORY
 The
 .Nm
 utility first appeared in
 .Ox 4.8 .
 The option
 .Fl I
 appeared in
 .Ox 5.2 ,
 and
 .Fl aCcfhKklMSsw
 in
 .Ox 5.7 .
 .Sh AUTHORS
 .An -nosplit
 The
 .Nm
 utility was written by
 .An Kristaps Dzonsons Aq Mt kristaps@bsd.lv
 and is maintained by
 .An Ingo Schwarze Aq Mt schwarze@openbsd.org .
Index: vendor/mdocml/dist/mandoc.3
===================================================================
--- vendor/mdocml/dist/mandoc.3	(revision 321806)
+++ vendor/mdocml/dist/mandoc.3	(revision 321807)
@@ -1,700 +1,713 @@
-.\"	$Id: mandoc.3,v 1.39 2017/05/17 23:39:31 schwarze Exp $
+.\"	$Id: mandoc.3,v 1.41 2017/07/04 23:40:01 schwarze Exp $
 .\"
 .\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons 
 .\" Copyright (c) 2010-2017 Ingo Schwarze 
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above
 .\" copyright notice and this permission notice appear in all copies.
 .\"
 .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: May 17 2017 $
+.Dd $Mdocdate: July 4 2017 $
 .Dt MANDOC 3
 .Os
 .Sh NAME
 .Nm mandoc ,
 .Nm deroff ,
 .Nm mandocmsg ,
 .Nm man_mparse ,
 .Nm man_validate ,
 .Nm mdoc_validate ,
 .Nm mparse_alloc ,
 .Nm mparse_free ,
 .Nm mparse_getkeep ,
 .Nm mparse_keep ,
 .Nm mparse_open ,
 .Nm mparse_readfd ,
 .Nm mparse_reset ,
 .Nm mparse_result ,
 .Nm mparse_strerror ,
 .Nm mparse_strlevel ,
-.Nm mparse_updaterc 
+.Nm mparse_updaterc
 .Nd mandoc macro compiler library
 .Sh SYNOPSIS
 .In sys/types.h
 .In mandoc.h
 .Pp
 .Fd "#define ASCII_NBRSP"
 .Fd "#define ASCII_HYPH"
 .Fd "#define ASCII_BREAK"
 .Ft struct mparse *
 .Fo mparse_alloc
 .Fa "int options"
-.Fa "enum mandoclevel wlevel"
+.Fa "enum mandocerr mmin"
 .Fa "mandocmsg mmsg"
-.Fa "char *defos"
+.Fa "enum mandoc_os oe_e"
+.Fa "char *os_s"
 .Fc
 .Ft void
 .Fo (*mandocmsg)
 .Fa "enum mandocerr errtype"
 .Fa "enum mandoclevel level"
 .Fa "const char *file"
 .Fa "int line"
 .Fa "int col"
 .Fa "const char *msg"
 .Fc
 .Ft void
 .Fo mparse_free
 .Fa "struct mparse *parse"
 .Fc
 .Ft const char *
 .Fo mparse_getkeep
 .Fa "const struct mparse *parse"
 .Fc
 .Ft void
 .Fo mparse_keep
 .Fa "struct mparse *parse"
 .Fc
 .Ft int
 .Fo mparse_open
 .Fa "struct mparse *parse"
 .Fa "const char *fname"
 .Fc
 .Ft "enum mandoclevel"
 .Fo mparse_readfd
 .Fa "struct mparse *parse"
 .Fa "int fd"
 .Fa "const char *fname"
 .Fc
 .Ft void
 .Fo mparse_reset
 .Fa "struct mparse *parse"
 .Fc
 .Ft void
 .Fo mparse_result
 .Fa "struct mparse *parse"
 .Fa "struct roff_man **man"
 .Fa "char **sodest"
 .Fc
 .Ft "const char *"
 .Fo mparse_strerror
 .Fa "enum mandocerr"
 .Fc
 .Ft "const char *"
 .Fo mparse_strlevel
 .Fa "enum mandoclevel"
 .Fc
 .Ft void
 .Fo mparse_updaterc
 .Fa "struct mparse *parse"
 .Fa "enum mandoclevel *rc"
 .Fc
 .In roff.h
 .Ft void
 .Fo deroff
 .Fa "char **dest"
 .Fa "const struct roff_node *node"
 .Fc
 .In sys/types.h
 .In mandoc.h
 .In mdoc.h
 .Vt extern const char * const * mdoc_argnames;
 .Vt extern const char * const * mdoc_macronames;
 .Ft void
 .Fo mdoc_validate
 .Fa "struct roff_man *mdoc"
 .Fc
 .In sys/types.h
 .In mandoc.h
 .In man.h
 .Vt extern const char * const * man_macronames;
 .Ft "const struct mparse *"
 .Fo man_mparse
 .Fa "const struct roff_man *man"
 .Fc
 .Ft void
 .Fo man_validate
 .Fa "struct roff_man *man"
 .Fc
 .Sh DESCRIPTION
 The
 .Nm mandoc
 library parses a
 .Ux
 manual into an abstract syntax tree (AST).
 .Ux
 manuals are composed of
 .Xr mdoc 7
 or
 .Xr man 7 ,
 and may be mixed with
 .Xr roff 7 ,
 .Xr tbl 7 ,
 and
 .Xr eqn 7
 invocations.
 .Pp
 The following describes a general parse sequence:
 .Bl -enum
 .It
 initiate a parsing sequence with
 .Xr mchars_alloc 3
 and
 .Fn mparse_alloc ;
 .It
 open a file with
 .Xr open 2
 or
 .Fn mparse_open ;
 .It
 parse it with
 .Fn mparse_readfd ;
 .It
 close it with
 .Xr close 2 ;
 .It
 retrieve the syntax tree with
 .Fn mparse_result ;
 .It
 depending on whether the
 .Fa macroset
 member of the returned
 .Vt struct roff_man
 is
 .Dv MACROSET_MDOC
 or
 .Dv MACROSET_MAN ,
 validate it with
 .Fn mdoc_validate
 or
 .Fn man_validate ,
 respectively;
 .It
 if information about the validity of the input is needed, fetch it with
 .Fn mparse_updaterc ;
 .It
 iterate over parse nodes with starting from the
 .Fa first
 member of the returned
 .Vt struct roff_man ;
 .It
 free all allocated memory with
 .Fn mparse_free
 and
 .Xr mchars_free 3 ,
 or invoke
 .Fn mparse_reset
 and go back to step 2 to parse new files.
 .El
 .Sh REFERENCE
 This section documents the functions, types, and variables available
 via
 .In mandoc.h ,
 with the exception of those documented in
 .Xr mandoc_escape 3
 and
 .Xr mchars_alloc 3 .
 .Ss Types
 .Bl -ohang
 .It Vt "enum mandocerr"
 An error or warning message during parsing.
 .It Vt "enum mandoclevel"
 A classification of an
 .Vt "enum mandocerr"
 as regards system operation.
 See the DIAGNOSTICS section in
 .Xr mandoc 1
 regarding the meanings of the levels.
 .It Vt "struct mparse"
 An opaque pointer to a running parse sequence.
 Created with
 .Fn mparse_alloc
 and freed with
 .Fn mparse_free .
 This may be used across parsed input if
 .Fn mparse_reset
 is called between parses.
 .It Vt "mandocmsg"
 A prototype for a function to handle error and warning
 messages emitted by the parser.
 .El
 .Ss Functions
 .Bl -ohang
 .It Fn deroff
 Obtain a text-only representation of a
 .Vt struct roff_node ,
 including text contained in its child nodes.
 To be used on children of the
 .Fa first
 member of
 .Vt struct roff_man .
 When it is no longer needed, the pointer returned from
 .Fn deroff
 can be passed to
 .Xr free 3 .
 .It Fn man_mparse
 Get the parser used for the current output.
 Declared in
 .In man.h ,
 implemented in
 .Pa man.c .
 .It Fn man_validate
 Validate the
 .Dv MACROSET_MAN
 parse tree obtained with
 .Fn mparse_result .
 Declared in
 .In man.h ,
 implemented in
 .Pa man.c .
 .It Fn mdoc_validate
 Validate the
 .Dv MACROSET_MDOC
 parse tree obtained with
 .Fn mparse_result .
 Declared in
 .In mdoc.h ,
 implemented in
 .Pa mdoc.c .
 .It Fn mparse_alloc
 Allocate a parser.
 The arguments have the following effect:
 .Bl -tag -offset 5n -width inttype
 .It Ar options
 When the
 .Dv MPARSE_MDOC
 or
 .Dv MPARSE_MAN
 bit is set, only that parser is used.
 Otherwise, the document type is automatically detected.
 .Pp
 When the
 .Dv MPARSE_SO
 bit is set,
 .Xr roff 7
 .Ic \&so
 file inclusion requests are always honoured.
 Otherwise, if the request is the only content in an input file,
 only the file name is remembered, to be returned in the
 .Fa sodest
 argument of
 .Fn mparse_result .
 .Pp
 When the
 .Dv MPARSE_QUICK
 bit is set, parsing is aborted after the NAME section.
 This is for example useful in
 .Xr makewhatis 8
 .Fl Q
 to quickly build minimal databases.
-.It Ar wlevel
+.It Ar mmin
 Can be set to
-.Dv MANDOCLEVEL_BADARG ,
-.Dv MANDOCLEVEL_ERROR ,
+.Dv MANDOCERR_BASE ,
+.Dv MANDOCERR_STYLE ,
+.Dv MANDOCERR_WARNING ,
+.Dv MANDOCERR_ERROR ,
+.Dv MANDOCERR_UNSUPP ,
 or
-.Dv MANDOCLEVEL_WARNING .
+.Dv MANDOCERR_MAX .
 Messages below the selected level will be suppressed.
 .It Ar mmsg
 A callback function to handle errors and warnings.
 See
 .Pa main.c
 for an example.
 If printing of error messages is not desired,
 .Dv NULL
 may be passed.
-.It Ar defos
+.It Ar os_e
+Operating system to check base system conventions for.
+If
+.Dv MANDOC_OS_OTHER ,
+the system is automatically detected from
+.Ic \&Os ,
+.Fl Ios ,
+or
+.Xr uname 3 .
+.It Ar os_s
 A default string for the
 .Xr mdoc 7
-.Sq \&Os
+.Ic \&Os
 macro, overriding the
 .Dv OSNAME
 preprocessor definition and the results of
 .Xr uname 3 .
 Passing
 .Dv NULL
 sets no default.
 .El
 .Pp
 The same parser may be used for multiple files so long as
 .Fn mparse_reset
 is called between parses.
 .Fn mparse_free
 must be called to free the memory allocated by this function.
 Declared in
 .In mandoc.h ,
 implemented in
 .Pa read.c .
 .It Fn mparse_free
 Free all memory allocated by
 .Fn mparse_alloc .
 Declared in
 .In mandoc.h ,
 implemented in
 .Pa read.c .
 .It Fn mparse_getkeep
 Acquire the keep buffer.
 Must follow a call of
 .Fn mparse_keep .
 Declared in
 .In mandoc.h ,
 implemented in
 .Pa read.c .
 .It Fn mparse_keep
 Instruct the parser to retain a copy of its parsed input.
 This can be acquired with subsequent
 .Fn mparse_getkeep
 calls.
 Declared in
 .In mandoc.h ,
 implemented in
 .Pa read.c .
 .It Fn mparse_open
 Open the file for reading.
 If that fails and
 .Fa fname
 does not already end in
 .Ql .gz ,
 try again after appending
 .Ql .gz .
 Save the information whether the file is zipped or not.
 Return a file descriptor open for reading or -1 on failure.
 It can be passed to
 .Fn mparse_readfd
 or used directly.
 Declared in
 .In mandoc.h ,
 implemented in
 .Pa read.c .
 .It Fn mparse_readfd
 Parse a file descriptor opened with
 .Xr open 2
 or
 .Fn mparse_open .
 Pass the associated filename in
 .Va fname .
 This function may be called multiple times with different parameters; however,
 .Xr close 2
 and
 .Fn mparse_reset
 should be invoked between parses.
 Declared in
 .In mandoc.h ,
 implemented in
 .Pa read.c .
 .It Fn mparse_reset
 Reset a parser so that
 .Fn mparse_readfd
 may be used again.
 Declared in
 .In mandoc.h ,
 implemented in
 .Pa read.c .
 .It Fn mparse_result
 Obtain the result of a parse.
 One of the two pointers will be filled in.
 Declared in
 .In mandoc.h ,
 implemented in
 .Pa read.c .
 .It Fn mparse_strerror
 Return a statically-allocated string representation of an error code.
 Declared in
 .In mandoc.h ,
 implemented in
 .Pa read.c .
 .It Fn mparse_strlevel
 Return a statically-allocated string representation of a level code.
 Declared in
 .In mandoc.h ,
 implemented in
 .Pa read.c .
 .It Fn mparse_updaterc
 If the highest warning or error level that occurred during the current
 .Fa parse
 is higher than
 .Pf * Fa rc ,
 update
 .Pf * Fa rc
 accordingly.
 This is useful after calling
 .Fn mdoc_validate
 or
 .Fn man_validate .
 Declared in
 .In mandoc.h ,
 implemented in
 .Pa read.c .
 .El
 .Ss Variables
 .Bl -ohang
 .It Va man_macronames
 The string representation of a
 .Xr man 7
 macro as indexed by
 .Vt "enum mant" .
 .It Va mdoc_argnames
 The string representation of an
 .Xr mdoc 7
 macro argument as indexed by
 .Vt "enum mdocargt" .
 .It Va mdoc_macronames
 The string representation of an
 .Xr mdoc 7
 macro as indexed by
 .Vt "enum mdoct" .
 .El
 .Sh IMPLEMENTATION NOTES
 This section consists of structural documentation for
 .Xr mdoc 7
 and
 .Xr man 7
 syntax trees and strings.
 .Ss Man and Mdoc Strings
 Strings may be extracted from mdoc and man meta-data, or from text
 nodes (MDOC_TEXT and MAN_TEXT, respectively).
 These strings have special non-printing formatting cues embedded in the
 text itself, as well as
 .Xr roff 7
 escapes preserved from input.
 Implementing systems will need to handle both situations to produce
 human-readable text.
 In general, strings may be assumed to consist of 7-bit ASCII characters.
 .Pp
 The following non-printing characters may be embedded in text strings:
 .Bl -tag -width Ds
 .It Dv ASCII_NBRSP
 A non-breaking space character.
 .It Dv ASCII_HYPH
 A soft hyphen.
 .It Dv ASCII_BREAK
 A breakable zero-width space.
 .El
 .Pp
 Escape characters are also passed verbatim into text strings.
 An escape character is a sequence of characters beginning with the
 backslash
 .Pq Sq \e .
 To construct human-readable text, these should be intercepted with
 .Xr mandoc_escape 3
 and converted with one the functions described in
 .Xr mchars_alloc 3 .
 .Ss Man Abstract Syntax Tree
 This AST is governed by the ontological rules dictated in
 .Xr man 7
 and derives its terminology accordingly.
 .Pp
 The AST is composed of
 .Vt struct roff_node
 nodes with element, root and text types as declared by the
 .Va type
 field.
 Each node also provides its parse point (the
 .Va line ,
 .Va pos ,
 and
 .Va sec
 fields), its position in the tree (the
 .Va parent ,
 .Va child ,
 .Va next
 and
 .Va prev
 fields) and some type-specific data.
 .Pp
 The tree itself is arranged according to the following normal form,
 where capitalised non-terminals represent nodes.
 .Pp
 .Bl -tag -width "ELEMENTXX" -compact
 .It ROOT
 \(<- mnode+
 .It mnode
 \(<- ELEMENT | TEXT | BLOCK
 .It BLOCK
 \(<- HEAD BODY
 .It HEAD
 \(<- mnode*
 .It BODY
 \(<- mnode*
 .It ELEMENT
 \(<- ELEMENT | TEXT*
 .It TEXT
 \(<- [[:ascii:]]*
 .El
 .Pp
 The only elements capable of nesting other elements are those with
 next-line scope as documented in
 .Xr man 7 .
 .Ss Mdoc Abstract Syntax Tree
 This AST is governed by the ontological
 rules dictated in
 .Xr mdoc 7
 and derives its terminology accordingly.
 .Qq In-line
 elements described in
 .Xr mdoc 7
 are described simply as
 .Qq elements .
 .Pp
 The AST is composed of
 .Vt struct roff_node
 nodes with block, head, body, element, root and text types as declared
 by the
 .Va type
 field.
 Each node also provides its parse point (the
 .Va line ,
 .Va pos ,
 and
 .Va sec
 fields), its position in the tree (the
 .Va parent ,
 .Va child ,
 .Va last ,
 .Va next
 and
 .Va prev
 fields) and some type-specific data, in particular, for nodes generated
 from macros, the generating macro in the
 .Va tok
 field.
 .Pp
 The tree itself is arranged according to the following normal form,
 where capitalised non-terminals represent nodes.
 .Pp
 .Bl -tag -width "ELEMENTXX" -compact
 .It ROOT
 \(<- mnode+
 .It mnode
 \(<- BLOCK | ELEMENT | TEXT
 .It BLOCK
 \(<- HEAD [TEXT] (BODY [TEXT])+ [TAIL [TEXT]]
 .It ELEMENT
 \(<- TEXT*
 .It HEAD
 \(<- mnode*
 .It BODY
 \(<- mnode* [ENDBODY mnode*]
 .It TAIL
 \(<- mnode*
 .It TEXT
 \(<- [[:ascii:]]*
 .El
 .Pp
 Of note are the TEXT nodes following the HEAD, BODY and TAIL nodes of
 the BLOCK production: these refer to punctuation marks.
 Furthermore, although a TEXT node will generally have a non-zero-length
 string, in the specific case of
 .Sq \&.Bd \-literal ,
 an empty line will produce a zero-length string.
 Multiple body parts are only found in invocations of
 .Sq \&Bl \-column ,
 where a new body introduces a new phrase.
 .Pp
 The
 .Xr mdoc 7
 syntax tree accommodates for broken block structures as well.
 The ENDBODY node is available to end the formatting associated
 with a given block before the physical end of that block.
 It has a non-null
 .Va end
 field, is of the BODY
 .Va type ,
 has the same
 .Va tok
 as the BLOCK it is ending, and has a
 .Va pending
 field pointing to that BLOCK's BODY node.
 It is an indirect child of that BODY node
 and has no children of its own.
 .Pp
 An ENDBODY node is generated when a block ends while one of its child
 blocks is still open, like in the following example:
 .Bd -literal -offset indent
 \&.Ao ao
 \&.Bo bo ac
 \&.Ac bc
 \&.Bc end
 .Ed
 .Pp
 This example results in the following block structure:
 .Bd -literal -offset indent
 BLOCK Ao
     HEAD Ao
     BODY Ao
         TEXT ao
         BLOCK Bo, pending -> Ao
             HEAD Bo
             BODY Bo
                 TEXT bo
                 TEXT ac
                 ENDBODY Ao, pending -> Ao
                 TEXT bc
 TEXT end
 .Ed
 .Pp
 Here, the formatting of the
-.Sq \&Ao
+.Ic \&Ao
 block extends from TEXT ao to TEXT ac,
 while the formatting of the
-.Sq \&Bo
+.Ic \&Bo
 block extends from TEXT bo to TEXT bc.
 It renders as follows in
 .Fl T Ns Cm ascii
 mode:
 .Pp
 .Dl  bc] end
 .Pp
 Support for badly-nested blocks is only provided for backward
 compatibility with some older
 .Xr mdoc 7
 implementations.
 Using badly-nested blocks is
 .Em strongly discouraged ;
 for example, the
 .Fl T Ns Cm html
 front-end to
 .Xr mandoc 1
 is unable to render them in any meaningful way.
 Furthermore, behaviour when encountering badly-nested blocks is not
 consistent across troff implementations, especially when using multiple
 levels of badly-nested blocks.
 .Sh SEE ALSO
 .Xr mandoc 1 ,
 .Xr man.cgi 3 ,
 .Xr mandoc_escape 3 ,
 .Xr mandoc_headers 3 ,
 .Xr mandoc_malloc 3 ,
 .Xr mansearch 3 ,
 .Xr mchars_alloc 3 ,
 .Xr tbl 3 ,
 .Xr eqn 7 ,
 .Xr man 7 ,
 .Xr mandoc_char 7 ,
 .Xr mdoc 7 ,
 .Xr roff 7 ,
 .Xr tbl 7
 .Sh AUTHORS
 .An -nosplit
 The
 .Nm
 library was written by
 .An Kristaps Dzonsons Aq Mt kristaps@bsd.lv
 and is maintained by
 .An Ingo Schwarze Aq Mt schwarze@openbsd.org .
Index: vendor/mdocml/dist/mandoc.c
===================================================================
--- vendor/mdocml/dist/mandoc.c	(revision 321806)
+++ vendor/mdocml/dist/mandoc.c	(revision 321807)
@@ -1,616 +1,630 @@
-/*	$Id: mandoc.c,v 1.100 2017/06/02 19:21:23 schwarze Exp $ */
+/*	$Id: mandoc.c,v 1.103 2017/07/03 13:40:19 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons 
  * Copyright (c) 2011-2015, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 
-#include "mandoc.h"
 #include "mandoc_aux.h"
+#include "mandoc.h"
+#include "roff.h"
 #include "libmandoc.h"
 
 static	int	 a2time(time_t *, const char *, const char *);
 static	char	*time2a(time_t);
 
 
 enum mandoc_esc
 mandoc_escape(const char **end, const char **start, int *sz)
 {
 	const char	*local_start;
 	int		 local_sz;
 	char		 term;
 	enum mandoc_esc	 gly;
 
 	/*
 	 * When the caller doesn't provide return storage,
 	 * use local storage.
 	 */
 
 	if (NULL == start)
 		start = &local_start;
 	if (NULL == sz)
 		sz = &local_sz;
 
 	/*
 	 * Beyond the backslash, at least one input character
 	 * is part of the escape sequence.  With one exception
 	 * (see below), that character won't be returned.
 	 */
 
 	gly = ESCAPE_ERROR;
 	*start = ++*end;
 	*sz = 0;
 	term = '\0';
 
 	switch ((*start)[-1]) {
 	/*
 	 * First the glyphs.  There are several different forms of
 	 * these, but each eventually returns a substring of the glyph
 	 * name.
 	 */
 	case '(':
 		gly = ESCAPE_SPECIAL;
 		*sz = 2;
 		break;
 	case '[':
 		gly = ESCAPE_SPECIAL;
 		term = ']';
 		break;
 	case 'C':
 		if ('\'' != **start)
 			return ESCAPE_ERROR;
 		*start = ++*end;
 		gly = ESCAPE_SPECIAL;
 		term = '\'';
 		break;
 
 	/*
 	 * Escapes taking no arguments at all.
 	 */
 	case 'd':
 	case 'u':
 	case ',':
 	case '/':
 		return ESCAPE_IGNORE;
+	case 'p':
+		return ESCAPE_BREAK;
 
 	/*
 	 * The \z escape is supposed to output the following
 	 * character without advancing the cursor position.
 	 * Since we are mostly dealing with terminal mode,
 	 * let us just skip the next character.
 	 */
 	case 'z':
 		return ESCAPE_SKIPCHAR;
 
 	/*
 	 * Handle all triggers matching \X(xy, \Xx, and \X[xxxx], where
 	 * 'X' is the trigger.  These have opaque sub-strings.
 	 */
 	case 'F':
 	case 'g':
 	case 'k':
 	case 'M':
 	case 'm':
 	case 'n':
 	case 'V':
 	case 'Y':
 		gly = ESCAPE_IGNORE;
 		/* FALLTHROUGH */
 	case 'f':
 		if (ESCAPE_ERROR == gly)
 			gly = ESCAPE_FONT;
 		switch (**start) {
 		case '(':
 			*start = ++*end;
 			*sz = 2;
 			break;
 		case '[':
 			*start = ++*end;
 			term = ']';
 			break;
 		default:
 			*sz = 1;
 			break;
 		}
 		break;
 
 	/*
 	 * These escapes are of the form \X'Y', where 'X' is the trigger
 	 * and 'Y' is any string.  These have opaque sub-strings.
 	 * The \B and \w escapes are handled in roff.c, roff_res().
 	 */
 	case 'A':
 	case 'b':
 	case 'D':
 	case 'R':
 	case 'X':
 	case 'Z':
 		gly = ESCAPE_IGNORE;
 		/* FALLTHROUGH */
 	case 'o':
 		if (**start == '\0')
 			return ESCAPE_ERROR;
 		if (gly == ESCAPE_ERROR)
 			gly = ESCAPE_OVERSTRIKE;
 		term = **start;
 		*start = ++*end;
 		break;
 
 	/*
 	 * These escapes are of the form \X'N', where 'X' is the trigger
 	 * and 'N' resolves to a numerical expression.
 	 */
 	case 'h':
 	case 'H':
 	case 'L':
 	case 'l':
 	case 'S':
 	case 'v':
 	case 'x':
 		if (strchr(" %&()*+-./0123456789:<=>", **start)) {
 			if ('\0' != **start)
 				++*end;
 			return ESCAPE_ERROR;
 		}
 		switch ((*start)[-1]) {
 		case 'h':
 			gly = ESCAPE_HORIZ;
 			break;
 		case 'l':
 			gly = ESCAPE_HLINE;
 			break;
 		default:
 			gly = ESCAPE_IGNORE;
 			break;
 		}
 		term = **start;
 		*start = ++*end;
 		break;
 
 	/*
 	 * Special handling for the numbered character escape.
 	 * XXX Do any other escapes need similar handling?
 	 */
 	case 'N':
 		if ('\0' == **start)
 			return ESCAPE_ERROR;
 		(*end)++;
 		if (isdigit((unsigned char)**start)) {
 			*sz = 1;
 			return ESCAPE_IGNORE;
 		}
 		(*start)++;
 		while (isdigit((unsigned char)**end))
 			(*end)++;
 		*sz = *end - *start;
 		if ('\0' != **end)
 			(*end)++;
 		return ESCAPE_NUMBERED;
 
 	/*
 	 * Sizes get a special category of their own.
 	 */
 	case 's':
 		gly = ESCAPE_IGNORE;
 
 		/* See +/- counts as a sign. */
 		if ('+' == **end || '-' == **end || ASCII_HYPH == **end)
 			*start = ++*end;
 
 		switch (**end) {
 		case '(':
 			*start = ++*end;
 			*sz = 2;
 			break;
 		case '[':
 			*start = ++*end;
 			term = ']';
 			break;
 		case '\'':
 			*start = ++*end;
 			term = '\'';
 			break;
 		case '3':
 		case '2':
 		case '1':
 			*sz = (*end)[-1] == 's' &&
 			    isdigit((unsigned char)(*end)[1]) ? 2 : 1;
 			break;
 		default:
 			*sz = 1;
 			break;
 		}
 
 		break;
 
 	/*
 	 * Anything else is assumed to be a glyph.
 	 * In this case, pass back the character after the backslash.
 	 */
 	default:
 		gly = ESCAPE_SPECIAL;
 		*start = --*end;
 		*sz = 1;
 		break;
 	}
 
 	assert(ESCAPE_ERROR != gly);
 
 	/*
 	 * Read up to the terminating character,
 	 * paying attention to nested escapes.
 	 */
 
 	if ('\0' != term) {
 		while (**end != term) {
 			switch (**end) {
 			case '\0':
 				return ESCAPE_ERROR;
 			case '\\':
 				(*end)++;
 				if (ESCAPE_ERROR ==
 				    mandoc_escape(end, NULL, NULL))
 					return ESCAPE_ERROR;
 				break;
 			default:
 				(*end)++;
 				break;
 			}
 		}
 		*sz = (*end)++ - *start;
 	} else {
 		assert(*sz > 0);
 		if ((size_t)*sz > strlen(*start))
 			return ESCAPE_ERROR;
 		*end += *sz;
 	}
 
 	/* Run post-processors. */
 
 	switch (gly) {
 	case ESCAPE_FONT:
 		if (2 == *sz) {
 			if ('C' == **start) {
 				/*
 				 * Treat constant-width font modes
 				 * just like regular font modes.
 				 */
 				(*start)++;
 				(*sz)--;
 			} else {
 				if ('B' == (*start)[0] && 'I' == (*start)[1])
 					gly = ESCAPE_FONTBI;
 				break;
 			}
 		} else if (1 != *sz)
 			break;
 
 		switch (**start) {
 		case '3':
 		case 'B':
 			gly = ESCAPE_FONTBOLD;
 			break;
 		case '2':
 		case 'I':
 			gly = ESCAPE_FONTITALIC;
 			break;
 		case 'P':
 			gly = ESCAPE_FONTPREV;
 			break;
 		case '1':
 		case 'R':
 			gly = ESCAPE_FONTROMAN;
 			break;
 		}
 		break;
 	case ESCAPE_SPECIAL:
 		if (1 == *sz && 'c' == **start)
 			gly = ESCAPE_NOSPACE;
 		/*
 		 * Unicode escapes are defined in groff as \[u0000]
 		 * to \[u10FFFF], where the contained value must be
 		 * a valid Unicode codepoint.  Here, however, only
 		 * check the length and range.
 		 */
 		if (**start != 'u' || *sz < 5 || *sz > 7)
 			break;
 		if (*sz == 7 && ((*start)[1] != '1' || (*start)[2] != '0'))
 			break;
 		if (*sz == 6 && (*start)[1] == '0')
 			break;
 		if (*sz == 5 && (*start)[1] == 'D' &&
 		    strchr("89ABCDEF", (*start)[2]) != NULL)
 			break;
 		if ((int)strspn(*start + 1, "0123456789ABCDEFabcdef")
 		    + 1 == *sz)
 			gly = ESCAPE_UNICODE;
 		break;
 	default:
 		break;
 	}
 
 	return gly;
 }
 
 /*
  * Parse a quoted or unquoted roff-style request or macro argument.
  * Return a pointer to the parsed argument, which is either the original
  * pointer or advanced by one byte in case the argument is quoted.
  * NUL-terminate the argument in place.
  * Collapse pairs of quotes inside quoted arguments.
  * Advance the argument pointer to the next argument,
  * or to the NUL byte terminating the argument line.
  */
 char *
 mandoc_getarg(struct mparse *parse, char **cpp, int ln, int *pos)
 {
 	char	 *start, *cp;
 	int	  quoted, pairs, white;
 
 	/* Quoting can only start with a new word. */
 	start = *cpp;
 	quoted = 0;
 	if ('"' == *start) {
 		quoted = 1;
 		start++;
 	}
 
 	pairs = 0;
 	white = 0;
 	for (cp = start; '\0' != *cp; cp++) {
 
 		/*
 		 * Move the following text left
 		 * after quoted quotes and after "\\" and "\t".
 		 */
 		if (pairs)
 			cp[-pairs] = cp[0];
 
 		if ('\\' == cp[0]) {
 			/*
 			 * In copy mode, translate double to single
 			 * backslashes and backslash-t to literal tabs.
 			 */
 			switch (cp[1]) {
 			case 't':
 				cp[0] = '\t';
 				/* FALLTHROUGH */
 			case '\\':
 				pairs++;
 				cp++;
 				break;
 			case ' ':
 				/* Skip escaped blanks. */
 				if (0 == quoted)
 					cp++;
 				break;
 			default:
 				break;
 			}
 		} else if (0 == quoted) {
 			if (' ' == cp[0]) {
 				/* Unescaped blanks end unquoted args. */
 				white = 1;
 				break;
 			}
 		} else if ('"' == cp[0]) {
 			if ('"' == cp[1]) {
 				/* Quoted quotes collapse. */
 				pairs++;
 				cp++;
 			} else {
 				/* Unquoted quotes end quoted args. */
 				quoted = 2;
 				break;
 			}
 		}
 	}
 
 	/* Quoted argument without a closing quote. */
 	if (1 == quoted)
 		mandoc_msg(MANDOCERR_ARG_QUOTE, parse, ln, *pos, NULL);
 
 	/* NUL-terminate this argument and move to the next one. */
 	if (pairs)
 		cp[-pairs] = '\0';
 	if ('\0' != *cp) {
 		*cp++ = '\0';
 		while (' ' == *cp)
 			cp++;
 	}
 	*pos += (int)(cp - start) + (quoted ? 1 : 0);
 	*cpp = cp;
 
 	if ('\0' == *cp && (white || ' ' == cp[-1]))
 		mandoc_msg(MANDOCERR_SPACE_EOL, parse, ln, *pos, NULL);
 
 	return start;
 }
 
 static int
 a2time(time_t *t, const char *fmt, const char *p)
 {
 	struct tm	 tm;
 	char		*pp;
 
 	memset(&tm, 0, sizeof(struct tm));
 
 	pp = NULL;
 #if HAVE_STRPTIME
 	pp = strptime(p, fmt, &tm);
 #endif
 	if (NULL != pp && '\0' == *pp) {
 		*t = mktime(&tm);
 		return 1;
 	}
 
 	return 0;
 }
 
 static char *
 time2a(time_t t)
 {
 	struct tm	*tm;
 	char		*buf, *p;
 	size_t		 ssz;
 	int		 isz;
 
 	tm = localtime(&t);
 	if (tm == NULL)
 		return NULL;
 
 	/*
 	 * Reserve space:
 	 * up to 9 characters for the month (September) + blank
 	 * up to 2 characters for the day + comma + blank
 	 * 4 characters for the year and a terminating '\0'
 	 */
 
 	p = buf = mandoc_malloc(10 + 4 + 4 + 1);
 
 	if ((ssz = strftime(p, 10 + 1, "%B ", tm)) == 0)
 		goto fail;
 	p += (int)ssz;
 
 	/*
 	 * The output format is just "%d" here, not "%2d" or "%02d".
 	 * That's also the reason why we can't just format the
 	 * date as a whole with "%B %e, %Y" or "%B %d, %Y".
 	 * Besides, the present approach is less prone to buffer
 	 * overflows, in case anybody should ever introduce the bug
 	 * of looking at LC_TIME.
 	 */
 
 	if ((isz = snprintf(p, 4 + 1, "%d, ", tm->tm_mday)) == -1)
 		goto fail;
 	p += isz;
 
 	if (strftime(p, 4 + 1, "%Y", tm) == 0)
 		goto fail;
 	return buf;
 
 fail:
 	free(buf);
 	return NULL;
 }
 
 char *
-mandoc_normdate(struct mparse *parse, char *in, int ln, int pos)
+mandoc_normdate(struct roff_man *man, char *in, int ln, int pos)
 {
+	char		*cp;
 	time_t		 t;
 
 	/* No date specified: use today's date. */
 
 	if (in == NULL || *in == '\0' || strcmp(in, "$" "Mdocdate$") == 0) {
-		mandoc_msg(MANDOCERR_DATE_MISSING, parse, ln, pos, NULL);
+		mandoc_msg(MANDOCERR_DATE_MISSING, man->parse, ln, pos, NULL);
 		return time2a(time(NULL));
 	}
 
 	/* Valid mdoc(7) date format. */
 
 	if (a2time(&t, "$" "Mdocdate: %b %d %Y $", in) ||
-	    a2time(&t, "%b %d, %Y", in))
-		return time2a(t);
+	    a2time(&t, "%b %d, %Y", in)) {
+		cp = time2a(t);
+		if (t > time(NULL) + 86400)
+			mandoc_msg(MANDOCERR_DATE_FUTURE, man->parse,
+			    ln, pos, cp);
+		return cp;
+	}
 
-	/* Do not warn about the legacy man(7) format. */
+	/* In man(7), do not warn about the legacy format. */
 
-	if ( ! a2time(&t, "%Y-%m-%d", in))
-		mandoc_msg(MANDOCERR_DATE_BAD, parse, ln, pos, in);
+	if (a2time(&t, "%Y-%m-%d", in) == 0)
+		mandoc_msg(MANDOCERR_DATE_BAD, man->parse, ln, pos, in);
+	else if (t > time(NULL) + 86400)
+		mandoc_msg(MANDOCERR_DATE_FUTURE, man->parse, ln, pos, in);
+	else if (man->macroset == MACROSET_MDOC)
+		mandoc_vmsg(MANDOCERR_DATE_LEGACY, man->parse,
+		    ln, pos, "Dd %s", in);
 
 	/* Use any non-mdoc(7) date verbatim. */
 
 	return mandoc_strdup(in);
 }
 
 int
 mandoc_eos(const char *p, size_t sz)
 {
 	const char	*q;
 	int		 enclosed, found;
 
 	if (0 == sz)
 		return 0;
 
 	/*
 	 * End-of-sentence recognition must include situations where
 	 * some symbols, such as `)', allow prior EOS punctuation to
 	 * propagate outward.
 	 */
 
 	enclosed = found = 0;
 	for (q = p + (int)sz - 1; q >= p; q--) {
 		switch (*q) {
 		case '\"':
 		case '\'':
 		case ']':
 		case ')':
 			if (0 == found)
 				enclosed = 1;
 			break;
 		case '.':
 		case '!':
 		case '?':
 			found = 1;
 			break;
 		default:
 			return found &&
 			    (!enclosed || isalnum((unsigned char)*q));
 		}
 	}
 
 	return found && !enclosed;
 }
 
 /*
  * Convert a string to a long that may not be <0.
  * If the string is invalid, or is less than 0, return -1.
  */
 int
 mandoc_strntoi(const char *p, size_t sz, int base)
 {
 	char		 buf[32];
 	char		*ep;
 	long		 v;
 
 	if (sz > 31)
 		return -1;
 
 	memcpy(buf, p, sz);
 	buf[(int)sz] = '\0';
 
 	errno = 0;
 	v = strtol(buf, &ep, base);
 
 	if (buf[0] == '\0' || *ep != '\0')
 		return -1;
 
 	if (v > INT_MAX)
 		v = INT_MAX;
 	if (v < INT_MIN)
 		v = INT_MIN;
 
 	return (int)v;
 }
Index: vendor/mdocml/dist/mandoc.css
===================================================================
--- vendor/mdocml/dist/mandoc.css	(revision 321806)
+++ vendor/mdocml/dist/mandoc.css	(revision 321807)
@@ -1,194 +1,203 @@
-/* $Id: mandoc.css,v 1.18 2017/03/13 20:22:18 schwarze Exp $ */
+/* $Id: mandoc.css,v 1.22 2017/07/16 18:45:00 schwarze Exp $ */
 /*
  * Standard style sheet for mandoc(1) -Thtml and man.cgi(8).
  */
 
 /* Global defaults. */
 
 html {		max-width: 100ex; }
 body {		font-family: Helvetica,Arial,sans-serif; }
 table {		margin-top: 0em;
 		margin-bottom: 0em; }
 td {		vertical-align: top; }
 ul, ol, dl {	margin-top: 0em;
 		margin-bottom: 0em; }
 li, dt {	margin-top: 1em; }
 
 a.selflink {	border-bottom: thin dotted;
 		color: inherit;
 		font: inherit;
 		text-decoration: inherit; }
+* {		clear: both }
 
 /* Search form and search results. */
 
 fieldset {	border: thin solid silver;
 		border-radius: 1em;
 		text-align: center; }
 input[name=expr] {
 		width: 25%; }
 
 table.results {	margin-top: 1em;
 		margin-left: 2em;
 		font-size: smaller; }
 
 /* Header and footer lines. */
 
 table.head {	width: 100%;
 		border-bottom: 1px dotted #808080;
 		margin-bottom: 1em;
 		font-size: smaller; }
 td.head-vol {	text-align: center; }
 td.head-rtitle {
 		text-align: right; }
 span.Nd { }
 
 table.foot {	width: 100%;
 		border-top: 1px dotted #808080;
 		margin-top: 1em;
 		font-size: smaller; }
 td.foot-os {	text-align: right; }
 
 /* Sections and paragraphs. */
 
 div.manual-text {
 		margin-left: 5ex; }
 h1.Sh {		margin-top: 2ex;
 		margin-bottom: 1ex;
 		margin-left: -4ex;
 		font-size: 110%; }
 h2.Ss {		margin-top: 2ex;
 		margin-bottom: 1ex;
 		margin-left: -2ex;
 		font-size: 105%; }
 div.Pp {	margin: 1ex 0ex; }
 a.Sx { }
 a.Xr { }
 
 /* Displays and lists. */
 
 div.Bd { }
 div.D1 {	margin-left: 5ex; }
 
 ul.Bl-bullet {	list-style-type: disc;
 		padding-left: 1em; }
 li.It-bullet { }
 ul.Bl-dash {	list-style-type: none;
 		padding-left: 0em; }
 li.It-dash:before {
 		content: "\2014  "; }
 ul.Bl-item {	list-style-type: none;
 		padding-left: 0em; }
 li.It-item { }
+ul.Bl-compact > li {
+		margin-top: 0ex; }
 
 ol.Bl-enum {	padding-left: 2em; }
 li.It-enum { }
+ol.Bl-compact > li {
+		margin-top: 0ex; }
 
 dl.Bl-diag { }
 dt.It-diag { }
-dd.It-diag { }
+dd.It-diag {	margin-left: 0ex; }
 b.It-diag {	font-style: normal; }
 dl.Bl-hang { }
 dt.It-hang { }
-dd.It-hang { }
+dd.It-hang {	margin-left: 10.2ex; }
 dl.Bl-inset { }
 dt.It-inset { }
-dd.It-inset { }
+dd.It-inset {	margin-left: 0ex; }
 dl.Bl-ohang { }
 dt.It-ohang { }
 dd.It-ohang {	margin-left: 0ex; }
-dl.Bl-tag {	margin-left: 8ex; }
+dl.Bl-tag {	margin-left: 10.2ex; }
 dt.It-tag {	float: left;
-		clear: both;
 		margin-top: 0ex;
-		margin-left: -8ex;
+		margin-left: -10.2ex;
 		padding-right: 2ex;
 		vertical-align: top; }
-dd.It-tag {	width: 100%;
+dd.It-tag {	clear: right;
+		width: 100%;
 		margin-top: 0ex;
 		margin-left: 0ex;
 		vertical-align: top;
 		overflow: auto; }
+dl.Bl-compact > dt {
+		margin-top: 0ex; }
 
 table.Bl-column { }
 tr.It-column { }
 td.It-column {	margin-top: 1em; }
+table.Bl-compact > tbody > tr > td {
+		margin-top: 0ex; }
 
 cite.Rs {	font-style: normal;
 		font-weight: normal; }
 span.RsA { }
 i.RsB {		font-weight: normal; }
 span.RsC { }
 span.RsD { }
 i.RsI {		font-weight: normal; }
 i.RsJ {		font-weight: normal; }
 span.RsN { }
 span.RsO { }
 span.RsP { }
 span.RsQ { }
 span.RsR { }
 span.RsT {	text-decoration: underline; }
 a.RsU { }
 span.RsV { }
 
 span.eqn { }
 table.tbl { }
 
 /* Semantic markup for command line utilities. */
 
 table.Nm { }
 b.Nm {		font-style: normal; }
 b.Fl {		font-style: normal; }
 b.Cm {		font-style: normal; }
 var.Ar {	font-style: italic;
 		font-weight: normal; }
 span.Op { }
 b.Ic {		font-style: normal; }
 code.Ev {	font-style: normal;
 		font-weight: normal;
 		font-family: monospace; }
 i.Pa {		font-weight: normal; }
 
 /* Semantic markup for function libraries. */
 
 span.Lb { }
 b.In {		font-style: normal; }
 a.In { }
 b.Fd {		font-style: normal; }
 var.Ft {	font-style: italic;
 		font-weight: normal; }
 b.Fn {		font-style: normal; }
 var.Fa {	font-style: italic;
 		font-weight: normal; }
 var.Vt {	font-style: italic;
 		font-weight: normal; }
 var.Va {	font-style: italic;
 		font-weight: normal; }
 code.Dv {	font-style: normal;
 		font-weight: normal;
 		font-family: monospace; }
 code.Er {	font-style: normal;
 		font-weight: normal;
 		font-family: monospace; }
 
 /* Various semantic markup. */
 
 span.An { }
 a.Lk { }
 a.Mt { }
 b.Cd {		font-style: normal; }
 i.Ad {		font-weight: normal; }
 b.Ms {		font-style: normal; }
 span.St { }
 a.Ux { }
 
 /* Physical markup. */
 
 .No {		font-style: normal;
 		font-weight: normal; }
 .Em {		font-style: italic;
 		font-weight: normal; }
 .Sy {		font-style: normal;
 		font-weight: bold; }
 .Li {		font-style: normal;
 		font-weight: normal;
 		font-family: monospace; }
Index: vendor/mdocml/dist/mandoc.h
===================================================================
--- vendor/mdocml/dist/mandoc.h	(revision 321806)
+++ vendor/mdocml/dist/mandoc.h	(revision 321807)
@@ -1,456 +1,469 @@
-/*	$Id: mandoc.h,v 1.226 2017/06/08 18:11:22 schwarze Exp $ */
+/*	$Id: mandoc.h,v 1.245 2017/07/08 14:51:04 schwarze Exp $ */
 /*
  * Copyright (c) 2010, 2011, 2014 Kristaps Dzonsons 
  * Copyright (c) 2010-2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
 #define ASCII_NBRSP	 31  /* non-breaking space */
 #define	ASCII_HYPH	 30  /* breakable hyphen */
 #define	ASCII_BREAK	 29  /* breakable zero-width space */
 
 /*
  * Status level.  This refers to both internal status (i.e., whilst
  * running, when warnings/errors are reported) and an indicator of a
  * threshold of when to halt (when said internal state exceeds the
  * threshold).
  */
 enum	mandoclevel {
 	MANDOCLEVEL_OK = 0,
 	MANDOCLEVEL_STYLE, /* style suggestions */
 	MANDOCLEVEL_WARNING, /* warnings: syntax, whitespace, etc. */
 	MANDOCLEVEL_ERROR, /* input has been thrown away */
 	MANDOCLEVEL_UNSUPP, /* input needs unimplemented features */
 	MANDOCLEVEL_BADARG, /* bad argument in invocation */
 	MANDOCLEVEL_SYSERR, /* system error */
 	MANDOCLEVEL_MAX
 };
 
 /*
  * All possible things that can go wrong within a parse, be it libroff,
  * libmdoc, or libman.
  */
 enum	mandocerr {
 	MANDOCERR_OK,
 
+	MANDOCERR_BASE, /* ===== start of base system conventions ===== */
+
+	MANDOCERR_MDOCDATE, /* Mdocdate found: Dd ... */
+	MANDOCERR_MDOCDATE_MISSING, /* Mdocdate missing: Dd ... */
+	MANDOCERR_ARCH_BAD,  /* unknown architecture: Dt ... arch */
+	MANDOCERR_OS_ARG,  /* operating system explicitly specified: Os ... */
+	MANDOCERR_RCS_MISSING, /* RCS id missing */
+	MANDOCERR_XR_BAD,  /* referenced manual not found: Xr name sec */
+
 	MANDOCERR_STYLE, /* ===== start of style suggestions ===== */
 
+	MANDOCERR_DATE_LEGACY, /* legacy man(7) date format: Dd ... */
+	MANDOCERR_TITLE_CASE, /* lower case character in document title */
+	MANDOCERR_RCS_REP, /* duplicate RCS id: ... */
+	MANDOCERR_SEC_TYPO,  /* typo in section name: Sh ... */
+	MANDOCERR_ARG_QUOTE, /* unterminated quoted argument */
 	MANDOCERR_MACRO_USELESS, /* useless macro: macro */
 	MANDOCERR_BX, /* consider using OS macro: macro */
 	MANDOCERR_ER_ORDER, /* errnos out of order: Er ... */
 	MANDOCERR_ER_REP, /* duplicate errno: Er ... */
-	MANDOCERR_ND_DOT, /* description line ends with a full stop */
+	MANDOCERR_DELIM, /* trailing delimiter: macro ... */
+	MANDOCERR_DELIM_NB, /* no blank before trailing delimiter: macro ... */
+	MANDOCERR_FI_SKIP, /* fill mode already enabled, skipping: fi */
+	MANDOCERR_NF_SKIP, /* fill mode already disabled, skipping: nf */
+	MANDOCERR_FUNC, /* function name without markup: name() */
+	MANDOCERR_SPACE_EOL, /* whitespace at end of input line */
+	MANDOCERR_COMMENT_BAD, /* bad comment style */
 
 	MANDOCERR_WARNING, /* ===== start of warnings ===== */
 
 	/* related to the prologue */
 	MANDOCERR_DT_NOTITLE, /* missing manual title, using UNTITLED: line */
 	MANDOCERR_TH_NOTITLE, /* missing manual title, using "": [macro] */
-	MANDOCERR_TITLE_CASE, /* lower case character in document title */
 	MANDOCERR_MSEC_MISSING, /* missing manual section, using "": macro */
 	MANDOCERR_MSEC_BAD, /* unknown manual section: Dt ... section */
 	MANDOCERR_DATE_MISSING, /* missing date, using today's date */
 	MANDOCERR_DATE_BAD, /* cannot parse date, using it verbatim: date */
+	MANDOCERR_DATE_FUTURE, /* date in the future, using it anyway: date */
 	MANDOCERR_OS_MISSING, /* missing Os macro, using "" */
-	MANDOCERR_PROLOG_REP, /* duplicate prologue macro: macro */
 	MANDOCERR_PROLOG_LATE, /* late prologue macro: macro */
-	MANDOCERR_DT_LATE, /* skipping late title macro: Dt args */
 	MANDOCERR_PROLOG_ORDER, /* prologue macros out of order: macros */
 
 	/* related to document structure */
 	MANDOCERR_SO, /* .so is fragile, better use ln(1): so path */
 	MANDOCERR_DOC_EMPTY, /* no document body */
 	MANDOCERR_SEC_BEFORE, /* content before first section header: macro */
 	MANDOCERR_NAMESEC_FIRST, /* first section is not NAME: Sh title */
 	MANDOCERR_NAMESEC_NONM, /* NAME section without Nm before Nd */
 	MANDOCERR_NAMESEC_NOND, /* NAME section without description */
 	MANDOCERR_NAMESEC_ND, /* description not at the end of NAME */
 	MANDOCERR_NAMESEC_BAD, /* bad NAME section content: macro */
 	MANDOCERR_NAMESEC_PUNCT, /* missing comma before name: Nm name */
 	MANDOCERR_ND_EMPTY, /* missing description line, using "" */
 	MANDOCERR_ND_LATE, /* description line outside NAME section */
 	MANDOCERR_SEC_ORDER, /* sections out of conventional order: Sh title */
 	MANDOCERR_SEC_REP, /* duplicate section title: Sh title */
 	MANDOCERR_SEC_MSEC, /* unexpected section: Sh title for ... only */
+	MANDOCERR_XR_SELF,  /* cross reference to self: Xr name sec */
 	MANDOCERR_XR_ORDER, /* unusual Xr order: ... after ... */
 	MANDOCERR_XR_PUNCT, /* unusual Xr punctuation: ... after ... */
 	MANDOCERR_AN_MISSING, /* AUTHORS section without An macro */
 
 	/* related to macros and nesting */
 	MANDOCERR_MACRO_OBS, /* obsolete macro: macro */
 	MANDOCERR_MACRO_CALL, /* macro neither callable nor escaped: macro */
 	MANDOCERR_PAR_SKIP, /* skipping paragraph macro: macro ... */
 	MANDOCERR_PAR_MOVE, /* moving paragraph macro out of list: macro */
 	MANDOCERR_NS_SKIP, /* skipping no-space macro */
 	MANDOCERR_BLK_NEST, /* blocks badly nested: macro ... */
 	MANDOCERR_BD_NEST, /* nested displays are not portable: macro ... */
 	MANDOCERR_BL_MOVE, /* moving content out of list: macro */
-	MANDOCERR_FI_SKIP, /* fill mode already enabled, skipping: fi */
-	MANDOCERR_NF_SKIP, /* fill mode already disabled, skipping: nf */
+	MANDOCERR_TA_LINE, /* first macro on line: Ta */
 	MANDOCERR_BLK_LINE, /* line scope broken: macro breaks macro */
 	MANDOCERR_BLK_BLANK, /* skipping blank line in line scope */
 
 	/* related to missing arguments */
 	MANDOCERR_REQ_EMPTY, /* skipping empty request: request */
 	MANDOCERR_COND_EMPTY, /* conditional request controls empty scope */
 	MANDOCERR_MACRO_EMPTY, /* skipping empty macro: macro */
 	MANDOCERR_BLK_EMPTY, /* empty block: macro */
 	MANDOCERR_ARG_EMPTY, /* empty argument, using 0n: macro arg */
 	MANDOCERR_BD_NOTYPE, /* missing display type, using -ragged: Bd */
 	MANDOCERR_BL_LATETYPE, /* list type is not the first argument: Bl arg */
 	MANDOCERR_BL_NOWIDTH, /* missing -width in -tag list, using 6n */
 	MANDOCERR_EX_NONAME, /* missing utility name, using "": Ex */
 	MANDOCERR_FO_NOHEAD, /* missing function name, using "": Fo */
 	MANDOCERR_IT_NOHEAD, /* empty head in list item: Bl -type It */
 	MANDOCERR_IT_NOBODY, /* empty list item: Bl -type It */
+	MANDOCERR_IT_NOARG, /* missing argument, using next line: Bl -c It */
 	MANDOCERR_BF_NOFONT, /* missing font type, using \fR: Bf */
 	MANDOCERR_BF_BADFONT, /* unknown font type, using \fR: Bf font */
 	MANDOCERR_PF_SKIP, /* nothing follows prefix: Pf arg */
 	MANDOCERR_RS_EMPTY, /* empty reference block: Rs */
 	MANDOCERR_XR_NOSEC, /* missing section argument: Xr arg */
 	MANDOCERR_ARG_STD, /* missing -std argument, adding it: macro */
 	MANDOCERR_OP_EMPTY, /* missing option string, using "": OP */
 	MANDOCERR_UR_NOHEAD, /* missing resource identifier, using "": UR */
 	MANDOCERR_EQN_NOBOX, /* missing eqn box, using "": op */
 
 	/* related to bad arguments */
-	MANDOCERR_ARG_QUOTE, /* unterminated quoted argument */
 	MANDOCERR_ARG_REP, /* duplicate argument: macro arg */
 	MANDOCERR_AN_REP, /* skipping duplicate argument: An -arg */
 	MANDOCERR_BD_REP, /* skipping duplicate display type: Bd -type */
 	MANDOCERR_BL_REP, /* skipping duplicate list type: Bl -type */
 	MANDOCERR_BL_SKIPW, /* skipping -width argument: Bl -type */
 	MANDOCERR_BL_COL, /* wrong number of cells */
 	MANDOCERR_AT_BAD, /* unknown AT&T UNIX version: At version */
 	MANDOCERR_FA_COMMA, /* comma in function argument: arg */
 	MANDOCERR_FN_PAREN, /* parenthesis in function name: arg */
 	MANDOCERR_LB_BAD, /* unknown library name: Lb ... */
 	MANDOCERR_RS_BAD, /* invalid content in Rs block: macro */
 	MANDOCERR_SM_BAD, /* invalid Boolean argument: macro arg */
 	MANDOCERR_FT_BAD, /* unknown font, skipping request: ft font */
 	MANDOCERR_TR_ODD, /* odd number of characters in request: tr char */
 
 	/* related to plain text */
 	MANDOCERR_FI_BLANK, /* blank line in fill mode, using .sp */
 	MANDOCERR_FI_TAB, /* tab in filled text */
-	MANDOCERR_SPACE_EOL, /* whitespace at end of input line */
 	MANDOCERR_EOS, /* new sentence, new line */
-	MANDOCERR_COMMENT_BAD, /* bad comment style */
 	MANDOCERR_ESC_BAD, /* invalid escape sequence: esc */
 	MANDOCERR_STR_UNDEF, /* undefined string, using "": name */
 
 	/* related to tables */
 	MANDOCERR_TBLLAYOUT_SPAN, /* tbl line starts with span */
 	MANDOCERR_TBLLAYOUT_DOWN, /* tbl column starts with span */
 	MANDOCERR_TBLLAYOUT_VERT, /* skipping vertical bar in tbl layout */
 
 	MANDOCERR_ERROR, /* ===== start of errors ===== */
 
 	/* related to tables */
 	MANDOCERR_TBLOPT_ALPHA, /* non-alphabetic character in tbl options */
 	MANDOCERR_TBLOPT_BAD, /* skipping unknown tbl option: option */
 	MANDOCERR_TBLOPT_NOARG, /* missing tbl option argument: option */
 	MANDOCERR_TBLOPT_ARGSZ, /* wrong tbl option argument size: option */
 	MANDOCERR_TBLLAYOUT_NONE, /* empty tbl layout */
 	MANDOCERR_TBLLAYOUT_CHAR, /* invalid character in tbl layout: char */
 	MANDOCERR_TBLLAYOUT_PAR, /* unmatched parenthesis in tbl layout */
 	MANDOCERR_TBLDATA_NONE, /* tbl without any data cells */
 	MANDOCERR_TBLDATA_SPAN, /* ignoring data in spanned tbl cell: data */
 	MANDOCERR_TBLDATA_EXTRA, /* ignoring extra tbl data cells: data */
 	MANDOCERR_TBLDATA_BLK, /* data block open at end of tbl: macro */
 
 	/* related to document structure and macros */
 	MANDOCERR_FILE, /* cannot open file */
+	MANDOCERR_PROLOG_REP, /* duplicate prologue macro: macro */
+	MANDOCERR_DT_LATE, /* skipping late title macro: Dt args */
 	MANDOCERR_ROFFLOOP, /* input stack limit exceeded, infinite loop? */
 	MANDOCERR_CHAR_BAD, /* skipping bad character: number */
 	MANDOCERR_MACRO, /* skipping unknown macro: macro */
 	MANDOCERR_REQ_INSEC, /* skipping insecure request: request */
 	MANDOCERR_IT_STRAY, /* skipping item outside list: It ... */
 	MANDOCERR_TA_STRAY, /* skipping column outside column list: Ta */
 	MANDOCERR_BLK_NOTOPEN, /* skipping end of block that is not open */
 	MANDOCERR_RE_NOTOPEN, /* fewer RS blocks open, skipping: RE arg */
 	MANDOCERR_BLK_BROKEN, /* inserting missing end of block: macro ... */
 	MANDOCERR_BLK_NOEND, /* appending missing end of block: macro */
 
 	/* related to request and macro arguments */
 	MANDOCERR_NAMESC, /* escaped character not allowed in a name: name */
 	MANDOCERR_BD_FILE, /* NOT IMPLEMENTED: Bd -file */
 	MANDOCERR_BD_NOARG, /* skipping display without arguments: Bd */
 	MANDOCERR_BL_NOTYPE, /* missing list type, using -item: Bl */
 	MANDOCERR_CE_NONUM, /* argument is not numeric, using 1: ce ... */
 	MANDOCERR_NM_NONAME, /* missing manual name, using "": Nm */
 	MANDOCERR_OS_UNAME, /* uname(3) system call failed, using UNKNOWN */
 	MANDOCERR_ST_BAD, /* unknown standard specifier: St standard */
 	MANDOCERR_IT_NONUM, /* skipping request without numeric argument */
 	MANDOCERR_SO_PATH, /* NOT IMPLEMENTED: .so with absolute path or ".." */
 	MANDOCERR_SO_FAIL, /* .so request failed */
 	MANDOCERR_ARG_SKIP, /* skipping all arguments: macro args */
 	MANDOCERR_ARG_EXCESS, /* skipping excess arguments: macro ... args */
 	MANDOCERR_DIVZERO, /* divide by zero */
 
 	MANDOCERR_UNSUPP, /* ===== start of unsupported features ===== */
 
 	MANDOCERR_TOOLARGE, /* input too large */
 	MANDOCERR_CHAR_UNSUPP, /* unsupported control character: number */
 	MANDOCERR_REQ_UNSUPP, /* unsupported roff request: request */
 	MANDOCERR_TBLOPT_EQN, /* eqn delim option in tbl: arg */
 	MANDOCERR_TBLLAYOUT_MOD, /* unsupported tbl layout modifier: m */
 	MANDOCERR_TBLMACRO, /* ignoring macro in table: macro */
 
 	MANDOCERR_MAX
 };
 
 struct	tbl_opts {
 	char		  tab; /* cell-separator */
 	char		  decimal; /* decimal point */
 	int		  opts;
 #define	TBL_OPT_CENTRE	 (1 << 0)
 #define	TBL_OPT_EXPAND	 (1 << 1)
 #define	TBL_OPT_BOX	 (1 << 2)
 #define	TBL_OPT_DBOX	 (1 << 3)
 #define	TBL_OPT_ALLBOX	 (1 << 4)
 #define	TBL_OPT_NOKEEP	 (1 << 5)
 #define	TBL_OPT_NOSPACE	 (1 << 6)
 #define	TBL_OPT_NOWARN	 (1 << 7)
 	int		  cols; /* number of columns */
 	int		  lvert; /* width of left vertical line */
 	int		  rvert; /* width of right vertical line */
 };
 
 enum	tbl_cellt {
 	TBL_CELL_CENTRE, /* c, C */
 	TBL_CELL_RIGHT, /* r, R */
 	TBL_CELL_LEFT, /* l, L */
 	TBL_CELL_NUMBER, /* n, N */
 	TBL_CELL_SPAN, /* s, S */
 	TBL_CELL_LONG, /* a, A */
 	TBL_CELL_DOWN, /* ^ */
 	TBL_CELL_HORIZ, /* _, - */
 	TBL_CELL_DHORIZ, /* = */
 	TBL_CELL_MAX
 };
 
 /*
  * A cell in a layout row.
  */
 struct	tbl_cell {
 	struct tbl_cell	 *next;
 	char		 *wstr; /* min width represented as a string */
 	size_t		  width; /* minimum column width */
 	size_t		  spacing; /* to the right of the column */
 	int		  vert; /* width of subsequent vertical line */
 	int		  col; /* column number, starting from 0 */
 	int		  flags;
 #define	TBL_CELL_TALIGN	 (1 << 0) /* t, T */
 #define	TBL_CELL_BALIGN	 (1 << 1) /* d, D */
 #define	TBL_CELL_BOLD	 (1 << 2) /* fB, B, b */
 #define	TBL_CELL_ITALIC	 (1 << 3) /* fI, I, i */
 #define	TBL_CELL_EQUAL	 (1 << 4) /* e, E */
 #define	TBL_CELL_UP	 (1 << 5) /* u, U */
 #define	TBL_CELL_WIGN	 (1 << 6) /* z, Z */
 #define	TBL_CELL_WMAX	 (1 << 7) /* x, X */
 	enum tbl_cellt	  pos;
 };
 
 /*
  * A layout row.
  */
 struct	tbl_row {
 	struct tbl_row	 *next;
 	struct tbl_cell	 *first;
 	struct tbl_cell	 *last;
 	int		  vert; /* width of left vertical line */
 };
 
 enum	tbl_datt {
 	TBL_DATA_NONE, /* has no data */
 	TBL_DATA_DATA, /* consists of data/string */
 	TBL_DATA_HORIZ, /* horizontal line */
 	TBL_DATA_DHORIZ, /* double-horizontal line */
 	TBL_DATA_NHORIZ, /* squeezed horizontal line */
 	TBL_DATA_NDHORIZ /* squeezed double-horizontal line */
 };
 
 /*
  * A cell within a row of data.  The "string" field contains the actual
  * string value that's in the cell.  The rest is layout.
  */
 struct	tbl_dat {
 	struct tbl_cell	 *layout; /* layout cell */
 	struct tbl_dat	 *next;
 	char		 *string; /* data (NULL if not TBL_DATA_DATA) */
 	int		  spans; /* how many spans follow */
 	int		  block; /* T{ text block T} */
 	enum tbl_datt	  pos;
 };
 
 enum	tbl_spant {
 	TBL_SPAN_DATA, /* span consists of data */
 	TBL_SPAN_HORIZ, /* span is horizontal line */
 	TBL_SPAN_DHORIZ /* span is double horizontal line */
 };
 
 /*
  * A row of data in a table.
  */
 struct	tbl_span {
 	struct tbl_opts	 *opts;
 	struct tbl_row	 *layout; /* layout row */
 	struct tbl_dat	 *first;
 	struct tbl_dat	 *last;
 	struct tbl_span	 *prev;
 	struct tbl_span	 *next;
 	int		  line; /* parse line */
 	enum tbl_spant	  pos;
 };
 
 enum	eqn_boxt {
-	EQN_ROOT, /* root of parse tree */
 	EQN_TEXT, /* text (number, variable, whatever) */
 	EQN_SUBEXPR, /* nested `eqn' subexpression */
 	EQN_LIST, /* list (braces, etc.) */
-	EQN_LISTONE, /* singleton list */
 	EQN_PILE, /* vertical pile */
 	EQN_MATRIX /* pile of piles */
 };
 
 enum	eqn_fontt {
 	EQNFONT_NONE = 0,
 	EQNFONT_ROMAN,
 	EQNFONT_BOLD,
 	EQNFONT_FAT,
 	EQNFONT_ITALIC,
 	EQNFONT__MAX
 };
 
 enum	eqn_post {
 	EQNPOS_NONE = 0,
 	EQNPOS_SUP,
 	EQNPOS_SUBSUP,
 	EQNPOS_SUB,
 	EQNPOS_TO,
 	EQNPOS_FROM,
 	EQNPOS_FROMTO,
 	EQNPOS_OVER,
 	EQNPOS_SQRT,
 	EQNPOS__MAX
 };
 
 enum	eqn_pilet {
 	EQNPILE_NONE = 0,
 	EQNPILE_PILE,
 	EQNPILE_CPILE,
 	EQNPILE_RPILE,
 	EQNPILE_LPILE,
 	EQNPILE_COL,
 	EQNPILE_CCOL,
 	EQNPILE_RCOL,
 	EQNPILE_LCOL,
 	EQNPILE__MAX
 };
 
  /*
  * A "box" is a parsed mathematical expression as defined by the eqn.7
  * grammar.
  */
 struct	eqn_box {
 	int		  size; /* font size of expression */
 #define	EQN_DEFSIZE	  INT_MIN
 	enum eqn_boxt	  type; /* type of node */
 	struct eqn_box	 *first; /* first child node */
 	struct eqn_box	 *last; /* last child node */
 	struct eqn_box	 *next; /* node sibling */
 	struct eqn_box	 *prev; /* node sibling */
 	struct eqn_box	 *parent; /* node sibling */
 	char		 *text; /* text (or NULL) */
 	char		 *left; /* fence left-hand */
 	char		 *right; /* fence right-hand */
 	char		 *top; /* expression over-symbol */
 	char		 *bottom; /* expression under-symbol */
 	size_t		  args; /* arguments in parent */
 	size_t		  expectargs; /* max arguments in parent */
 	enum eqn_post	  pos; /* position of next box */
 	enum eqn_fontt	  font; /* font of box */
 	enum eqn_pilet	  pile; /* equation piling */
 };
 
 /*
- * An equation consists of a tree of expressions starting at a given
- * line and position.
- */
-struct	eqn {
-	char		 *name; /* identifier (or NULL) */
-	struct eqn_box	 *root; /* root mathematical expression */
-	int		  ln; /* invocation line */
-	int		  pos; /* invocation position */
-};
-
-/*
  * Parse options.
  */
 #define	MPARSE_MDOC	1  /* assume -mdoc */
 #define	MPARSE_MAN	2  /* assume -man */
 #define	MPARSE_SO	4  /* honour .so requests */
 #define	MPARSE_QUICK	8  /* abort the parse early */
 #define	MPARSE_UTF8	16 /* accept UTF-8 input */
 #define	MPARSE_LATIN1	32 /* accept ISO-LATIN-1 input */
 
+enum	mandoc_os {
+	MANDOC_OS_OTHER = 0,
+	MANDOC_OS_NETBSD,
+	MANDOC_OS_OPENBSD
+};
+
 enum	mandoc_esc {
 	ESCAPE_ERROR = 0, /* bail! unparsable escape */
 	ESCAPE_IGNORE, /* escape to be ignored */
 	ESCAPE_SPECIAL, /* a regular special character */
 	ESCAPE_FONT, /* a generic font mode */
 	ESCAPE_FONTBOLD, /* bold font mode */
 	ESCAPE_FONTITALIC, /* italic font mode */
 	ESCAPE_FONTBI, /* bold italic font mode */
 	ESCAPE_FONTROMAN, /* roman font mode */
 	ESCAPE_FONTPREV, /* previous font mode */
 	ESCAPE_NUMBERED, /* a numbered glyph */
 	ESCAPE_UNICODE, /* a unicode codepoint */
+	ESCAPE_BREAK, /* break the output line */
 	ESCAPE_NOSPACE, /* suppress space if the last on a line */
 	ESCAPE_HORIZ, /* horizontal movement */
 	ESCAPE_HLINE, /* horizontal line drawing */
 	ESCAPE_SKIPCHAR, /* skip the next character */
 	ESCAPE_OVERSTRIKE /* overstrike all chars in the argument */
 };
 
 typedef	void	(*mandocmsg)(enum mandocerr, enum mandoclevel,
 			const char *, int, int, const char *);
 
 
 struct	mparse;
 struct	roff_man;
 
 enum mandoc_esc	  mandoc_escape(const char **, const char **, int *);
 void		  mchars_alloc(void);
 void		  mchars_free(void);
 int		  mchars_num2char(const char *, size_t);
 const char	 *mchars_uc2str(int);
 int		  mchars_num2uc(const char *, size_t);
 int		  mchars_spec2cp(const char *, size_t);
 const char	 *mchars_spec2str(const char *, size_t, size_t *);
-struct mparse	 *mparse_alloc(int, enum mandoclevel, mandocmsg, const char *);
+struct mparse	 *mparse_alloc(int, enum mandocerr, mandocmsg,
+			enum mandoc_os, const char *);
 void		  mparse_free(struct mparse *);
 void		  mparse_keep(struct mparse *);
 int		  mparse_open(struct mparse *, const char *);
 enum mandoclevel  mparse_readfd(struct mparse *, int, const char *);
 enum mandoclevel  mparse_readmem(struct mparse *, void *, size_t,
 			const char *);
 void		  mparse_reset(struct mparse *);
 void		  mparse_result(struct mparse *,
 			struct roff_man **, char **);
 const char	 *mparse_getkeep(const struct mparse *);
 const char	 *mparse_strerror(enum mandocerr);
 const char	 *mparse_strlevel(enum mandoclevel);
 void		  mparse_updaterc(struct mparse *, enum mandoclevel *);
Index: vendor/mdocml/dist/mandoc_aux.c
===================================================================
--- vendor/mdocml/dist/mandoc_aux.c	(revision 321806)
+++ vendor/mdocml/dist/mandoc_aux.c	(revision 321807)
@@ -1,111 +1,118 @@
-/*	$Id: mandoc_aux.c,v 1.9 2015/11/07 14:22:29 schwarze Exp $ */
+/*	$Id: mandoc_aux.c,v 1.10 2017/06/12 19:05:47 schwarze Exp $ */
 /*
  * Copyright (c) 2009, 2011 Kristaps Dzonsons 
- * Copyright (c) 2014 Ingo Schwarze 
+ * Copyright (c) 2014, 2015, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #if HAVE_ERR
 #include 
 #endif
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc.h"
 #include "mandoc_aux.h"
 
 
 int
 mandoc_asprintf(char **dest, const char *fmt, ...)
 {
 	va_list	 ap;
 	int	 ret;
 
 	va_start(ap, fmt);
 	ret = vasprintf(dest, fmt, ap);
 	va_end(ap);
 
 	if (ret == -1)
 		err((int)MANDOCLEVEL_SYSERR, NULL);
 	return ret;
 }
 
 void *
 mandoc_calloc(size_t num, size_t size)
 {
 	void	*ptr;
 
 	ptr = calloc(num, size);
 	if (ptr == NULL)
 		err((int)MANDOCLEVEL_SYSERR, NULL);
 	return ptr;
 }
 
 void *
 mandoc_malloc(size_t size)
 {
 	void	*ptr;
 
 	ptr = malloc(size);
 	if (ptr == NULL)
 		err((int)MANDOCLEVEL_SYSERR, NULL);
 	return ptr;
 }
 
 void *
 mandoc_realloc(void *ptr, size_t size)
 {
-
 	ptr = realloc(ptr, size);
 	if (ptr == NULL)
 		err((int)MANDOCLEVEL_SYSERR, NULL);
 	return ptr;
 }
 
 void *
 mandoc_reallocarray(void *ptr, size_t num, size_t size)
 {
-
 	ptr = reallocarray(ptr, num, size);
+	if (ptr == NULL)
+		err((int)MANDOCLEVEL_SYSERR, NULL);
+	return ptr;
+}
+
+void *
+mandoc_recallocarray(void *ptr, size_t oldnum, size_t num, size_t size)
+{
+	ptr = recallocarray(ptr, oldnum, num, size);
 	if (ptr == NULL)
 		err((int)MANDOCLEVEL_SYSERR, NULL);
 	return ptr;
 }
 
 char *
 mandoc_strdup(const char *ptr)
 {
 	char	*p;
 
 	p = strdup(ptr);
 	if (p == NULL)
 		err((int)MANDOCLEVEL_SYSERR, NULL);
 	return p;
 }
 
 char *
 mandoc_strndup(const char *ptr, size_t sz)
 {
 	char	*p;
 
 	p = mandoc_malloc(sz + 1);
 	memcpy(p, ptr, sz);
 	p[(int)sz] = '\0';
 	return p;
 }
Index: vendor/mdocml/dist/mandoc_aux.h
===================================================================
--- vendor/mdocml/dist/mandoc_aux.h	(revision 321806)
+++ vendor/mdocml/dist/mandoc_aux.h	(revision 321807)
@@ -1,26 +1,27 @@
-/*	$Id: mandoc_aux.h,v 1.6 2017/02/17 14:31:52 schwarze Exp $ */
+/*	$Id: mandoc_aux.h,v 1.7 2017/06/12 19:05:47 schwarze Exp $ */
 /*
  * Copyright (c) 2009, 2011 Kristaps Dzonsons 
- * Copyright (c) 2014 Ingo Schwarze 
+ * Copyright (c) 2014, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
 int		  mandoc_asprintf(char **, const char *, ...)
 			__attribute__((__format__ (__printf__, 2, 3)));
 void		 *mandoc_calloc(size_t, size_t);
 void		 *mandoc_malloc(size_t);
 void		 *mandoc_realloc(void *, size_t);
 void		 *mandoc_reallocarray(void *, size_t, size_t);
+void		 *mandoc_recallocarray(void *, size_t, size_t, size_t);
 char		 *mandoc_strdup(const char *);
 char		 *mandoc_strndup(const char *, size_t);
Index: vendor/mdocml/dist/mandoc_char.7
===================================================================
--- vendor/mdocml/dist/mandoc_char.7	(revision 321806)
+++ vendor/mdocml/dist/mandoc_char.7	(revision 321807)
@@ -1,807 +1,808 @@
-.\"	$Id: mandoc_char.7,v 1.66 2017/06/02 12:43:52 schwarze Exp $
+.\"	$Id: mandoc_char.7,v 1.67 2017/06/14 20:57:07 schwarze Exp $
 .\"
 .\" Copyright (c) 2003 Jason McIntyre 
 .\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons 
 .\" Copyright (c) 2011, 2013, 2015, 2017 Ingo Schwarze 
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above
 .\" copyright notice and this permission notice appear in all copies.
 .\"
 .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: June 2 2017 $
+.Dd $Mdocdate: June 14 2017 $
 .Dt MANDOC_CHAR 7
 .Os
 .Sh NAME
 .Nm mandoc_char
 .Nd mandoc special characters
 .Sh DESCRIPTION
 This page documents the
 .Xr roff 7
 escape sequences accepted by
 .Xr mandoc 1
 to represent special characters in
 .Xr mdoc 7
 and
 .Xr man 7
 documents.
 .Pp
 The rendering depends on the
 .Xr mandoc 1
 output mode; in ASCII output, most characters are completely
 unintelligible.
 For that reason, using any of the special characters documented here,
 except those discussed in the
 .Sx DESCRIPTION ,
 is strongly discouraged; they are supported merely for backwards
 compatibility with existing documents.
 .Pp
 In particular, in English manual pages, do not use special-character
 escape sequences to represent national language characters in author
 names; instead, provide ASCII transcriptions of the names.
 .Ss Dashes and Hyphens
 In typography there are different types of dashes of various width:
 the hyphen (-),
 the minus sign (\(mi),
 the en-dash (\(en),
 and the em-dash (\(em).
 .Pp
 Hyphens are used for adjectives;
 to separate the two parts of a compound word;
 or to separate a word across two successive lines of text.
 The hyphen does not need to be escaped:
 .Bd -unfilled -offset indent
 blue-eyed
 lorry-driver
 .Ed
 .Pp
 If a word on a text input line contains a hyphen, a formatter may decide
 to insert an output line break after the hyphen if that helps filling
 the current output line, but the whole word would overflow the line.
 If it is important that the word is not broken across lines in this
 way, a zero-width space
 .Pq Sq \e&
 can be inserted before or after the hyphen.
 While
 .Xr mandoc 1
 never breaks the output line after hyphens adjacent to a zero-width
 space, after any of the other dash- or hyphen-like characters
 represented by escape sequences, or after hyphens inside words in
 macro arguments, other software may not respect these rules and may
 break the line even in such cases.
 .Pp
 Some
 .Xr roff 7
 implementations contains dictionaries allowing to break the line
 at syllable boundaries even inside words that contain no hyphens.
 Such automatic hyphenation is not supported by
 .Xr mandoc 1 ,
 which only breaks the line at whitespace, and inside words only
 after existing hyphens.
 .Pp
 The mathematical minus sign is used for negative numbers or subtraction.
 It should be written as
 .Sq \e(mi :
 .Bd -unfilled -offset indent
 a = 3 \e(mi 1;
 b = \e(mi2;
 .Ed
 .Pp
 The en-dash is used to separate the two elements of a range,
 or can be used the same way as an em-dash.
 It should be written as
 .Sq \e(en :
 .Bd -unfilled -offset indent
 pp. 95\e(en97.
 Go away \e(en or else!
 .Ed
 .Pp
 The em-dash can be used to show an interruption
 or can be used the same way as colons, semi-colons, or parentheses.
 It should be written as
 .Sq \e(em :
 .Bd -unfilled -offset indent
 Three things \e(em apples, oranges, and bananas.
 This is not that \e(em rather, this is that.
 .Ed
 .Pp
 Note:
 hyphens, minus signs, and en-dashes look identical under normal ASCII output.
 Other formats, such as PostScript, render them correctly,
 with differing widths.
 .Ss Spaces
 To separate words in normal text, for indenting and alignment
 in literal context, and when none of the following special cases apply,
 just use the normal space character
 .Pq Sq \  .
 .Pp
 When filling text, output lines may be broken between words, i.e. at space
 characters.
 To prevent a line break between two particular words,
 use the unpaddable non-breaking space escape sequence
 .Pq Sq \e\ \&
 instead of the normal space character.
 For example, the input string
 .Dq number\e\ 1
 will be kept together as
 .Dq number\ 1
 on the same output line.
 .Pp
 On request and macro lines, the normal space character serves as an
 argument delimiter.
 To include whitespace into arguments, quoting is usually the best choice;
 see the MACRO SYNTAX section in
 .Xr roff 7 .
 In some cases, using the non-breaking space escape sequence
 .Pq Sq \e\ \&
 may be preferable.
 .Pp
 To escape macro names and to protect whitespace at the end
 of input lines, the zero-width space
 .Pq Sq \e&
 is often useful.
 For example, in
 .Xr mdoc 7 ,
 a normal space character can be displayed in single quotes in either
 of the following ways:
 .Pp
 .Dl .Sq \(dq \(dq
 .Dl .Sq \e \e&
 .Ss Quotes
 On request and macro lines, the double-quote character
 .Pq Sq \(dq
 is handled specially to allow quoting.
 One way to prevent this special handling is by using the
 .Sq \e(dq
 escape sequence.
 .Pp
 Note that on text lines, literal double-quote characters can be used
 verbatim.
 All other quote-like characters can be used verbatim as well,
 even on request and macro lines.
 .Ss Accents
 In output modes supporting such special output characters, for example
 .Fl T Cm pdf ,
 and sometimes less consistently in
 .Fl T Cm utf8 ,
 some
 .Xr roff 7
 formatters convert the following ASCII input characters to the
 following Unicode special output characters:
 .Bl -column x(ga U+2018 -offset indent
 .It \(ga Ta U+2018 Ta left single quotation mark
 .It \(aq Ta U+2019 Ta right single quotation mark
 .It \(ti Ta U+02DC Ta small tilde
 .It \(ha Ta U+02C6 Ta modifier letter circumflex
 .El
 .Pp
 In prose, this automatic substitution is often desirable;
 but when these characters have to be displayed as plain ASCII
 characters, for example in source code samples, they require
 escaping to render as follows:
 .Bl -column x(ga U+2018 -offset indent
 .It \e(ga Ta U+0060 Ta grave accent
 .It \e(aq Ta U+0027 Ta apostrophe
 .It \e(ti Ta U+007E Ta tilde
 .It \e(ha Ta U+005E Ta circumflex accent
 .El
 .Ss Periods
 The period
 .Pq Sq \&.
 is handled specially at the beginning of an input line,
 where it introduces a
 .Xr roff 7
 request or a macro, and when appearing alone as a macro argument in
 .Xr mdoc 7 .
 In such situations, prepend a zero-width space
 .Pq Sq \e&.
 to make it behave like normal text.
 .Pp
 Do not use the
 .Sq \e.
 escape sequence.
 It does not prevent special handling of the period.
 .Ss Backslashes
 To include a literal backslash
 .Pq Sq \e
 into the output, use the
 .Pq Sq \ee
 escape sequence.
 .Pp
 Note that doubling it
 .Pq Sq \e\e
 is not the right way to output a backslash.
 Because
 .Xr mandoc 1
 does not implement full
 .Xr roff 7
 functionality, it may work with
 .Xr mandoc 1 ,
 but it may have weird effects on complete
 .Xr roff 7
 implementations.
 .Sh SPECIAL CHARACTERS
 Special characters are encoded as
 .Sq \eX
 .Pq for a one-character escape ,
 .Sq \e(XX
 .Pq two-character ,
 and
 .Sq \e[N]
 .Pq N-character .
 For details, see the
 .Em Special Characters
 subsection of the
 .Xr roff 7
 manual.
 .Pp
 Spacing:
 .Bl -column "Input" "Description" -offset indent -compact
 .It Em Input Ta Em Description
 .It Sq \e\ \& Ta unpaddable non-breaking space
 .It \e\(ti   Ta paddable non-breaking space
 .It \e0      Ta unpaddable, breaking digit-width space
 .It \e|      Ta one-sixth \e(em narrow space, zero width in nroff mode
 .It \e^      Ta one-twelfth \e(em half-narrow space, zero width in nroff
 .It \e&      Ta zero-width space
 .It \e%      Ta zero-width space allowing hyphenation
 .El
 .Pp
 Lines:
 .Bl -column "Input" "Rendered" "Description" -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(ba    Ta \(ba        Ta bar
 .It \e(br    Ta \(br        Ta box rule
 .It \e(ul    Ta \(ul        Ta underscore
+.It \e(ru    Ta \(ru        Ta underscore (width 0.5m)
 .It \e(rn    Ta \(rn        Ta overline
 .It \e(bb    Ta \(bb        Ta broken bar
 .It \e(sl    Ta \(sl        Ta forward slash
 .It \e(rs    Ta \(rs        Ta backward slash
 .El
 .Pp
 Text markers:
 .Bl -column "Input" "Rendered" "Description" -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(ci    Ta \(ci        Ta circle
 .It \e(bu    Ta \(bu        Ta bullet
 .It \e(dd    Ta \(dd        Ta double dagger
 .It \e(dg    Ta \(dg        Ta dagger
 .It \e(lz    Ta \(lz        Ta lozenge
 .It \e(sq    Ta \(sq        Ta white square
 .It \e(ps    Ta \(ps        Ta paragraph
 .It \e(sc    Ta \(sc        Ta section
 .It \e(lh    Ta \(lh        Ta left hand
 .It \e(rh    Ta \(rh        Ta right hand
 .It \e(at    Ta \(at        Ta at
 .It \e(sh    Ta \(sh        Ta hash (pound)
 .It \e(CR    Ta \(CR        Ta carriage return
 .It \e(OK    Ta \(OK        Ta check mark
 .It \e(CL    Ta \(CL        Ta club suit
 .It \e(SP    Ta \(SP        Ta spade suit
 .It \e(HE    Ta \(HE        Ta heart suit
 .It \e(DI    Ta \(DI        Ta diamond suit
 .El
 .Pp
 Legal symbols:
 .Bl -column "Input" "Rendered" "Description" -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(co    Ta \(co        Ta copyright
 .It \e(rg    Ta \(rg        Ta registered
 .It \e(tm    Ta \(tm        Ta trademarked
 .El
 .Pp
 Punctuation:
 .Bl -column "Input" "Rendered" "Description" -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(em    Ta \(em        Ta em-dash
 .It \e(en    Ta \(en        Ta en-dash
 .It \e(hy    Ta \(hy        Ta hyphen
 .It \ee      Ta \e          Ta back-slash
 .It \e.      Ta \.          Ta period
 .It \e(r!    Ta \(r!        Ta upside-down exclamation
 .It \e(r?    Ta \(r?        Ta upside-down question
 .El
 .Pp
 Quotes:
 .Bl -column "Input" "Rendered" "Description" -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(Bq    Ta \(Bq        Ta right low double-quote
 .It \e(bq    Ta \(bq        Ta right low single-quote
 .It \e(lq    Ta \(lq        Ta left double-quote
 .It \e(rq    Ta \(rq        Ta right double-quote
 .It \e(oq    Ta \(oq        Ta left single-quote
 .It \e(cq    Ta \(cq        Ta right single-quote
 .It \e(aq    Ta \(aq        Ta apostrophe quote (text)
 .It \e(dq    Ta \(dq        Ta double quote (text)
 .It \e(Fo    Ta \(Fo        Ta left guillemet
 .It \e(Fc    Ta \(Fc        Ta right guillemet
 .It \e(fo    Ta \(fo        Ta left single guillemet
 .It \e(fc    Ta \(fc        Ta right single guillemet
 .El
 .Pp
 Brackets:
 .Bl -column "xxbracketrightbtx" Rendered Description -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(lB    Ta \(lB        Ta left bracket
 .It \e(rB    Ta \(rB        Ta right bracket
 .It \e(lC    Ta \(lC        Ta left brace
 .It \e(rC    Ta \(rC        Ta right brace
 .It \e(la    Ta \(la        Ta left angle
 .It \e(ra    Ta \(ra        Ta right angle
 .It \e(bv    Ta \(bv        Ta brace extension
 .It \e[braceex] Ta \[braceex] Ta brace extension
 .It \e[bracketlefttp] Ta \[bracketlefttp] Ta top-left hooked bracket
 .It \e[bracketleftbt] Ta \[bracketleftbt] Ta bottom-left hooked bracket
 .It \e[bracketleftex] Ta \[bracketleftex] Ta left hooked bracket extension
 .It \e[bracketrighttp] Ta \[bracketrighttp] Ta top-right hooked bracket
 .It \e[bracketrightbt] Ta \[bracketrightbt] Ta bottom-right hooked bracket
 .It \e[bracketrightex] Ta \[bracketrightex] Ta right hooked bracket extension
 .It \e(lt    Ta \(lt        Ta top-left hooked brace
 .It \e[bracelefttp] Ta \[bracelefttp] Ta top-left hooked brace
 .It \e(lk    Ta \(lk        Ta mid-left hooked brace
 .It \e[braceleftmid] Ta \[braceleftmid] Ta mid-left hooked brace
 .It \e(lb    Ta \(lb        Ta bottom-left hooked brace
 .It \e[braceleftbt] Ta \[braceleftbt] Ta bottom-left hooked brace
 .It \e[braceleftex] Ta \[braceleftex] Ta left hooked brace extension
 .It \e(rt    Ta \(rt        Ta top-left hooked brace
 .It \e[bracerighttp] Ta \[bracerighttp] Ta top-right hooked brace
 .It \e(rk    Ta \(rk        Ta mid-right hooked brace
 .It \e[bracerightmid] Ta \[bracerightmid] Ta mid-right hooked brace
 .It \e(rb    Ta \(rb        Ta bottom-right hooked brace
 .It \e[bracerightbt] Ta \[bracerightbt] Ta bottom-right hooked brace
 .It \e[bracerightex] Ta \[bracerightex] Ta right hooked brace extension
 .It \e[parenlefttp] Ta \[parenlefttp] Ta top-left hooked parenthesis
 .It \e[parenleftbt] Ta \[parenleftbt] Ta bottom-left hooked parenthesis
 .It \e[parenleftex] Ta \[parenleftex] Ta left hooked parenthesis extension
 .It \e[parenrighttp] Ta \[parenrighttp] Ta top-right hooked parenthesis
 .It \e[parenrightbt] Ta \[parenrightbt] Ta bottom-right hooked parenthesis
 .It \e[parenrightex] Ta \[parenrightex] Ta right hooked parenthesis extension
 .El
 .Pp
 Arrows:
 .Bl -column "Input" "Rendered" "Description" -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(<-    Ta \(<-        Ta left arrow
 .It \e(->    Ta \(->        Ta right arrow
 .It \e(<>    Ta \(<>        Ta left-right arrow
 .It \e(da    Ta \(da        Ta down arrow
 .It \e(ua    Ta \(ua        Ta up arrow
 .It \e(va    Ta \(va        Ta up-down arrow
 .It \e(lA    Ta \(lA        Ta left double-arrow
 .It \e(rA    Ta \(rA        Ta right double-arrow
 .It \e(hA    Ta \(hA        Ta left-right double-arrow
 .It \e(uA    Ta \(uA        Ta up double-arrow
 .It \e(dA    Ta \(dA        Ta down double-arrow
 .It \e(vA    Ta \(vA        Ta up-down double-arrow
 .It \e(an    Ta \(an        Ta horizontal arrow extension
 .El
 .Pp
 Logical:
 .Bl -column "Input" "Rendered" "Description" -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(AN    Ta \(AN        Ta logical and
 .It \e(OR    Ta \(OR        Ta logical or
 .It \e(no    Ta \(no        Ta logical not
 .It \e[tno]  Ta \[tno]      Ta logical not (text)
 .It \e(te    Ta \(te        Ta existential quantifier
 .It \e(fa    Ta \(fa        Ta universal quantifier
 .It \e(st    Ta \(st        Ta such that
 .It \e(tf    Ta \(tf        Ta therefore
 .It \e(3d    Ta \(3d        Ta therefore
 .It \e(or    Ta \(or        Ta bitwise or
 .El
 .Pp
 Mathematical:
 .Bl -column "xxcoproductxx" "Rendered" "Description" -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(pl    Ta \(pl        Ta plus
 .It \e(mi    Ta \(mi        Ta minus
 .It \e-      Ta \-          Ta minus (text)
 .It \e(-+    Ta \(-+        Ta minus-plus
 .It \e(+-    Ta \(+-        Ta plus-minus
 .It \e[t+-]  Ta \[t+-]      Ta plus-minus (text)
 .It \e(pc    Ta \(pc        Ta center-dot
 .It \e(mu    Ta \(mu        Ta multiply
 .It \e[tmu]  Ta \[tmu]      Ta multiply (text)
 .It \e(c*    Ta \(c*        Ta circle-multiply
 .It \e(c+    Ta \(c+        Ta circle-plus
 .It \e(di    Ta \(di        Ta divide
 .It \e[tdi]  Ta \[tdi]      Ta divide (text)
 .It \e(f/    Ta \(f/        Ta fraction
 .It \e(**    Ta \(**        Ta asterisk
 .It \e(<=    Ta \(<=        Ta less-than-equal
 .It \e(>=    Ta \(>=        Ta greater-than-equal
 .It \e(<<    Ta \(<<        Ta much less
 .It \e(>>    Ta \(>>        Ta much greater
 .It \e(eq    Ta \(eq        Ta equal
 .It \e(!=    Ta \(!=        Ta not equal
 .It \e(==    Ta \(==        Ta equivalent
 .It \e(ne    Ta \(ne        Ta not equivalent
 .It \e(ap    Ta \(ap        Ta tilde operator
 .It \e(|=    Ta \(|=        Ta asymptotically equal
 .It \e(=\(ti Ta \(=~        Ta approximately equal
 .It \e(\(ti\(ti Ta \(~~        Ta almost equal
 .It \e(\(ti= Ta \(~=        Ta almost equal
 .It \e(pt    Ta \(pt        Ta proportionate
 .It \e(es    Ta \(es        Ta empty set
 .It \e(mo    Ta \(mo        Ta element
 .It \e(nm    Ta \(nm        Ta not element
 .It \e(sb    Ta \(sb        Ta proper subset
 .It \e(nb    Ta \(nb        Ta not subset
 .It \e(sp    Ta \(sp        Ta proper superset
 .It \e(nc    Ta \(nc        Ta not superset
 .It \e(ib    Ta \(ib        Ta reflexive subset
 .It \e(ip    Ta \(ip        Ta reflexive superset
 .It \e(ca    Ta \(ca        Ta intersection
 .It \e(cu    Ta \(cu        Ta union
 .It \e(/_    Ta \(/_        Ta angle
 .It \e(pp    Ta \(pp        Ta perpendicular
 .It \e(is    Ta \(is        Ta integral
 .It \e[integral] Ta \[integral] Ta integral
 .It \e[sum]    Ta \[sum]   Ta summation
 .It \e[product] Ta \[product] Ta product
 .It \e[coproduct] Ta \[coproduct] Ta coproduct
 .It \e(gr    Ta \(gr        Ta gradient
 .It \e(sr    Ta \(sr        Ta square root
 .It \e[sqrt] Ta \[sqrt]     Ta square root
 .It \e(lc    Ta \(lc        Ta left-ceiling
 .It \e(rc    Ta \(rc        Ta right-ceiling
 .It \e(lf    Ta \(lf        Ta left-floor
 .It \e(rf    Ta \(rf        Ta right-floor
 .It \e(if    Ta \(if        Ta infinity
 .It \e(Ah    Ta \(Ah        Ta aleph
 .It \e(Im    Ta \(Im        Ta imaginary
 .It \e(Re    Ta \(Re        Ta real
 .It \e(wp    Ta \(wp        Ta Weierstrass p
 .It \e(pd    Ta \(pd        Ta partial differential
 .It \e(-h    Ta \(-h        Ta Planck constant over 2\(*p
 .It \e[hbar] Ta \[hbar]     Ta Planck constant over 2\(*p
 .It \e(12    Ta \(12        Ta one-half
 .It \e(14    Ta \(14        Ta one-fourth
 .It \e(34    Ta \(34        Ta three-fourths
 .It \e(18    Ta \(18        Ta one-eighth
 .It \e(38    Ta \(38        Ta three-eighths
 .It \e(58    Ta \(58        Ta five-eighths
 .It \e(78    Ta \(78        Ta seven-eighths
 .It \e(S1    Ta \(S1        Ta superscript 1
 .It \e(S2    Ta \(S2        Ta superscript 2
 .It \e(S3    Ta \(S3        Ta superscript 3
 .El
 .Pp
 Ligatures:
 .Bl -column "Input" "Rendered" "Description" -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(ff    Ta \(ff        Ta ff ligature
 .It \e(fi    Ta \(fi        Ta fi ligature
 .It \e(fl    Ta \(fl        Ta fl ligature
 .It \e(Fi    Ta \(Fi        Ta ffi ligature
 .It \e(Fl    Ta \(Fl        Ta ffl ligature
 .It \e(AE    Ta \(AE        Ta AE
 .It \e(ae    Ta \(ae        Ta ae
 .It \e(OE    Ta \(OE        Ta OE
 .It \e(oe    Ta \(oe        Ta oe
 .It \e(ss    Ta \(ss        Ta German eszett
 .It \e(IJ    Ta \(IJ        Ta IJ ligature
 .It \e(ij    Ta \(ij        Ta ij ligature
 .El
 .Pp
 Accents:
 .Bl -column "Input" "Rendered" "Description" -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(a"    Ta \(a"        Ta Hungarian umlaut
 .It \e(a-    Ta \(a-        Ta macron
 .It \e(a.    Ta \(a.        Ta dotted
 .It \e(a^    Ta \(a^        Ta circumflex
 .It \e(aa    Ta \(aa        Ta acute
 .It \e\(aq   Ta \'          Ta acute
 .It \e(ga    Ta \(ga        Ta grave
 .It \e\(ga   Ta \`          Ta grave
 .It \e(ab    Ta \(ab        Ta breve
 .It \e(ac    Ta \(ac        Ta cedilla
 .It \e(ad    Ta \(ad        Ta dieresis
 .It \e(ah    Ta \(ah        Ta caron
 .It \e(ao    Ta \(ao        Ta ring
 .It \e(a\(ti Ta \(a~        Ta tilde
 .It \e(ho    Ta \(ho        Ta ogonek
 .It \e(ha    Ta \(ha        Ta hat (text)
 .It \e(ti    Ta \(ti        Ta tilde (text)
 .El
 .Pp
 Accented letters:
 .Bl -column "Input" "Rendered" "Description" -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(\(aqA Ta \('A        Ta acute A
 .It \e(\(aqE Ta \('E        Ta acute E
 .It \e(\(aqI Ta \('I        Ta acute I
 .It \e(\(aqO Ta \('O        Ta acute O
 .It \e(\(aqU Ta \('U        Ta acute U
 .It \e(\(aqa Ta \('a        Ta acute a
 .It \e(\(aqe Ta \('e        Ta acute e
 .It \e(\(aqi Ta \('i        Ta acute i
 .It \e(\(aqo Ta \('o        Ta acute o
 .It \e(\(aqu Ta \('u        Ta acute u
 .It \e(\(gaA Ta \(`A        Ta grave A
 .It \e(\(gaE Ta \(`E        Ta grave E
 .It \e(\(gaI Ta \(`I        Ta grave I
 .It \e(\(gaO Ta \(`O        Ta grave O
 .It \e(\(gaU Ta \(`U        Ta grave U
 .It \e(\(gaa Ta \(`a        Ta grave a
 .It \e(\(gae Ta \(`e        Ta grave e
 .It \e(\(gai Ta \(`i        Ta grave i
 .It \e(\(gao Ta \(`i        Ta grave o
 .It \e(\(gau Ta \(`u        Ta grave u
 .It \e(\(tiA Ta \(~A        Ta tilde A
 .It \e(\(tiN Ta \(~N        Ta tilde N
 .It \e(\(tiO Ta \(~O        Ta tilde O
 .It \e(\(tia Ta \(~a        Ta tilde a
 .It \e(\(tin Ta \(~n        Ta tilde n
 .It \e(\(tio Ta \(~o        Ta tilde o
 .It \e(:A    Ta \(:A        Ta dieresis A
 .It \e(:E    Ta \(:E        Ta dieresis E
 .It \e(:I    Ta \(:I        Ta dieresis I
 .It \e(:O    Ta \(:O        Ta dieresis O
 .It \e(:U    Ta \(:U        Ta dieresis U
 .It \e(:a    Ta \(:a        Ta dieresis a
 .It \e(:e    Ta \(:e        Ta dieresis e
 .It \e(:i    Ta \(:i        Ta dieresis i
 .It \e(:o    Ta \(:o        Ta dieresis o
 .It \e(:u    Ta \(:u        Ta dieresis u
 .It \e(:y    Ta \(:y        Ta dieresis y
 .It \e(^A    Ta \(^A        Ta circumflex A
 .It \e(^E    Ta \(^E        Ta circumflex E
 .It \e(^I    Ta \(^I        Ta circumflex I
 .It \e(^O    Ta \(^O        Ta circumflex O
 .It \e(^U    Ta \(^U        Ta circumflex U
 .It \e(^a    Ta \(^a        Ta circumflex a
 .It \e(^e    Ta \(^e        Ta circumflex e
 .It \e(^i    Ta \(^i        Ta circumflex i
 .It \e(^o    Ta \(^o        Ta circumflex o
 .It \e(^u    Ta \(^u        Ta circumflex u
 .It \e(,C    Ta \(,C        Ta cedilla C
 .It \e(,c    Ta \(,c        Ta cedilla c
 .It \e(/L    Ta \(/L        Ta stroke L
 .It \e(/l    Ta \(/l        Ta stroke l
 .It \e(/O    Ta \(/O        Ta stroke O
 .It \e(/o    Ta \(/o        Ta stroke o
 .It \e(oA    Ta \(oA        Ta ring A
 .It \e(oa    Ta \(oa        Ta ring a
 .El
 .Pp
 Special letters:
 .Bl -column "Input" "Rendered" "Description" -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(-D    Ta \(-D        Ta Eth
 .It \e(Sd    Ta \(Sd        Ta eth
 .It \e(TP    Ta \(TP        Ta Thorn
 .It \e(Tp    Ta \(Tp        Ta thorn
 .It \e(.i    Ta \(.i        Ta dotless i
 .It \e(.j    Ta \(.j        Ta dotless j
 .El
 .Pp
 Currency:
 .Bl -column "Input" "Rendered" "Description" -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(Do    Ta \(Do        Ta dollar
 .It \e(ct    Ta \(ct        Ta cent
 .It \e(Eu    Ta \(Eu        Ta Euro symbol
 .It \e(eu    Ta \(eu        Ta Euro symbol
 .It \e(Ye    Ta \(Ye        Ta yen
 .It \e(Po    Ta \(Po        Ta pound
 .It \e(Cs    Ta \(Cs        Ta Scandinavian
 .It \e(Fn    Ta \(Fn        Ta florin
 .El
 .Pp
 Units:
 .Bl -column "Input" "Rendered" "Description" -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(de    Ta \(de        Ta degree
 .It \e(%0    Ta \(%0        Ta per-thousand
 .It \e(fm    Ta \(fm        Ta minute
 .It \e(sd    Ta \(sd        Ta second
 .It \e(mc    Ta \(mc        Ta micro
 .It \e(Of    Ta \(Of        Ta Spanish female ordinal
 .It \e(Om    Ta \(Om        Ta Spanish masculine ordinal
 .El
 .Pp
 Greek letters:
 .Bl -column "Input" "Rendered" "Description" -offset indent -compact
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e(*A    Ta \(*A        Ta Alpha
 .It \e(*B    Ta \(*B        Ta Beta
 .It \e(*G    Ta \(*G        Ta Gamma
 .It \e(*D    Ta \(*D        Ta Delta
 .It \e(*E    Ta \(*E        Ta Epsilon
 .It \e(*Z    Ta \(*Z        Ta Zeta
 .It \e(*Y    Ta \(*Y        Ta Eta
 .It \e(*H    Ta \(*H        Ta Theta
 .It \e(*I    Ta \(*I        Ta Iota
 .It \e(*K    Ta \(*K        Ta Kappa
 .It \e(*L    Ta \(*L        Ta Lambda
 .It \e(*M    Ta \(*M        Ta Mu
 .It \e(*N    Ta \(*N        Ta Nu
 .It \e(*C    Ta \(*C        Ta Xi
 .It \e(*O    Ta \(*O        Ta Omicron
 .It \e(*P    Ta \(*P        Ta Pi
 .It \e(*R    Ta \(*R        Ta Rho
 .It \e(*S    Ta \(*S        Ta Sigma
 .It \e(*T    Ta \(*T        Ta Tau
 .It \e(*U    Ta \(*U        Ta Upsilon
 .It \e(*F    Ta \(*F        Ta Phi
 .It \e(*X    Ta \(*X        Ta Chi
 .It \e(*Q    Ta \(*Q        Ta Psi
 .It \e(*W    Ta \(*W        Ta Omega
 .It \e(*a    Ta \(*a        Ta alpha
 .It \e(*b    Ta \(*b        Ta beta
 .It \e(*g    Ta \(*g        Ta gamma
 .It \e(*d    Ta \(*d        Ta delta
 .It \e(*e    Ta \(*e        Ta epsilon
 .It \e(*z    Ta \(*z        Ta zeta
 .It \e(*y    Ta \(*y        Ta eta
 .It \e(*h    Ta \(*h        Ta theta
 .It \e(*i    Ta \(*i        Ta iota
 .It \e(*k    Ta \(*k        Ta kappa
 .It \e(*l    Ta \(*l        Ta lambda
 .It \e(*m    Ta \(*m        Ta mu
 .It \e(*n    Ta \(*n        Ta nu
 .It \e(*c    Ta \(*c        Ta xi
 .It \e(*o    Ta \(*o        Ta omicron
 .It \e(*p    Ta \(*p        Ta pi
 .It \e(*r    Ta \(*r        Ta rho
 .It \e(*s    Ta \(*s        Ta sigma
 .It \e(*t    Ta \(*t        Ta tau
 .It \e(*u    Ta \(*u        Ta upsilon
 .It \e(*f    Ta \(*f        Ta phi
 .It \e(*x    Ta \(*x        Ta chi
 .It \e(*q    Ta \(*q        Ta psi
 .It \e(*w    Ta \(*w        Ta omega
 .It \e(+h    Ta \(+h        Ta theta variant
 .It \e(+f    Ta \(+f        Ta phi variant
 .It \e(+p    Ta \(+p        Ta pi variant
 .It \e(+e    Ta \(+e        Ta epsilon variant
 .It \e(ts    Ta \(ts        Ta sigma terminal
 .El
 .Sh PREDEFINED STRINGS
 Predefined strings are inherited from the macro packages of historical
 troff implementations.
 They are
 .Em not recommended
 for use, as they differ across implementations.
 Manuals using these predefined strings are almost certainly not
 portable.
 .Pp
 Their syntax is similar to special characters, using
 .Sq \e*X
 .Pq for a one-character escape ,
 .Sq \e*(XX
 .Pq two-character ,
 and
 .Sq \e*[N]
 .Pq N-character .
 For details, see the
 .Em Predefined Strings
 subsection of the
 .Xr roff 7
 manual.
 .Bl -column "Input" "Rendered" "Description" -offset indent
 .It Em Input Ta Em Rendered Ta Em Description
 .It \e*(Ba   Ta \*(Ba       Ta vertical bar
 .It \e*(Ne   Ta \*(Ne       Ta not equal
 .It \e*(Ge   Ta \*(Ge       Ta greater-than-equal
 .It \e*(Le   Ta \*(Le       Ta less-than-equal
 .It \e*(Gt   Ta \*(Gt       Ta greater-than
 .It \e*(Lt   Ta \*(Lt       Ta less-than
 .It \e*(Pm   Ta \*(Pm       Ta plus-minus
 .It \e*(If   Ta \*(If       Ta infinity
 .It \e*(Pi   Ta \*(Pi       Ta pi
 .It \e*(Na   Ta \*(Na       Ta NaN
 .It \e*(Am   Ta \*(Am       Ta ampersand
 .It \e*R     Ta \*R         Ta restricted mark
 .It \e*(Tm   Ta \*(Tm       Ta trade mark
 .It \e*q     Ta \*q         Ta double-quote
 .It \e*(Rq   Ta \*(Rq       Ta right-double-quote
 .It \e*(Lq   Ta \*(Lq       Ta left-double-quote
 .It \e*(lp   Ta \*(lp       Ta right-parenthesis
 .It \e*(rp   Ta \*(rp       Ta left-parenthesis
 .It \e*(lq   Ta \*(lq       Ta left double-quote
 .It \e*(rq   Ta \*(rq       Ta right double-quote
 .It \e*(ua   Ta \*(ua       Ta up arrow
 .It \e*(va   Ta \*(va       Ta up-down arrow
 .It \e*(<=   Ta \*(<=       Ta less-than-equal
 .It \e*(>=   Ta \*(>=       Ta greater-than-equal
 .It \e*(aa   Ta \*(aa       Ta acute
 .It \e*(ga   Ta \*(ga       Ta grave
 .It \e*(Px   Ta \*(Px       Ta POSIX standard name
 .It \e*(Ai   Ta \*(Ai       Ta ANSI standard name
 .El
 .Sh UNICODE CHARACTERS
 The escape sequences
 .Pp
 .Dl \e[uXXXX] and \eC\(aquXXXX\(aq
 .Pp
 are interpreted as Unicode codepoints.
 The codepoint must be in the range above U+0080 and less than U+10FFFF.
 For compatibility, the hexadecimal digits
 .Sq A
 to
 .Sq F
 must be given as uppercase characters,
 and points must be zero-padded to four characters; if
 greater than four characters, no zero padding is allowed.
 Unicode surrogates are not allowed.
 .Sh NUMBERED CHARACTERS
 For backward compatibility with existing manuals,
 .Xr mandoc 1
 also supports the
 .Pp
 .Dl \eN\(aq Ns Ar number Ns \(aq
 .Pp
 escape sequence, inserting the character
 .Ar number
 from the current character set into the output.
 Of course, this is inherently non-portable and is already marked
 as deprecated in the Heirloom roff manual.
 For example, do not use \eN\(aq34\(aq, use \e(dq, or even the plain
 .Sq \(dq
 character where possible.
 .Sh COMPATIBILITY
 This section documents compatibility between mandoc and other
 troff implementations, at this time limited to GNU troff
 .Pq Qq groff .
 .Pp
 .Bl -dash -compact
 .It
 The \eN\(aq\(aq escape sequence is limited to printable characters; in
 groff, it accepts arbitrary character numbers.
 .It
 In
 .Fl T Ns Cm ascii ,
 the
 \e(ss, \e(nm, \e(nb, \e(nc, \e(ib, \e(ip, \e(pp, \e[sum], \e[product],
 \e[coproduct], \e(gr, \e(-h, and \e(a. special characters render
 differently between mandoc and groff.
 .It
 In
 .Fl T Ns Cm html ,
 the \e(\(ti=, \e(nb, and \e(nc special characters render differently
 between mandoc and groff.
 .It
 The
 .Fl T Ns Cm ps
 and
 .Fl T Ns Cm pdf
 modes format like
 .Fl T Ns Cm ascii
 instead of rendering glyphs as in groff.
 .It
 The \e[radicalex], \e[sqrtex], and \e(ru special characters have been omitted
 from mandoc either because they are poorly documented or they have no
 known representation.
 .El
 .Sh SEE ALSO
 .Xr mandoc 1 ,
 .Xr man 7 ,
 .Xr mdoc 7 ,
 .Xr roff 7
 .Sh AUTHORS
 The
 .Nm
 manual page was written by
 .An Kristaps Dzonsons Aq Mt kristaps@bsd.lv .
 .Sh CAVEATS
 The predefined string
 .Sq \e*(Ba
 mimics the behaviour of the
 .Sq \&|
 character in
 .Xr mdoc 7 ;
 thus, if you wish to render a vertical bar with no side effects, use
 the
 .Sq \e(ba
 escape.
Index: vendor/mdocml/dist/mandoc_escape.3
===================================================================
--- vendor/mdocml/dist/mandoc_escape.3	(revision 321806)
+++ vendor/mdocml/dist/mandoc_escape.3	(revision 321807)
@@ -1,367 +1,367 @@
-.\"	$Id: mandoc_escape.3,v 1.3 2015/01/21 20:33:25 schwarze Exp $
+.\"	$Id: mandoc_escape.3,v 1.4 2017/07/04 23:40:01 schwarze Exp $
 .\"
 .\" Copyright (c) 2014 Ingo Schwarze 
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above
 .\" copyright notice and this permission notice appear in all copies.
 .\"
 .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: January 21 2015 $
+.Dd $Mdocdate: July 4 2017 $
 .Dt MANDOC_ESCAPE 3
 .Os
 .Sh NAME
 .Nm mandoc_escape
 .Nd parse roff escape sequences
 .Sh SYNOPSIS
 .In sys/types.h
 .In mandoc.h
 .Ft "enum mandoc_esc"
 .Fo mandoc_escape
 .Fa "const char **end"
 .Fa "const char **start"
 .Fa "int *sz"
 .Fc
 .Sh DESCRIPTION
 This function scans a
 .Xr roff 7
 escape sequence.
 .Pp
 An escape sequence consists of
 .Bl -dash -compact -width 2n
 .It
 an initial backslash character
 .Pq Sq \e ,
 .It
 a single ASCII character called the escape sequence identifier,
 .It
 and, with only a few exceptions, an argument.
 .El
 .Pp
 Arguments can be given in the following forms; some escape sequence
 identifiers only accept some of these forms as specified below.
 The first three forms are called the standard forms.
 .Bl -tag -width 2n
 .It \&In brackets: Ic \&[ Ns Ar argument Ns Ic \&]
 The argument starts after the initial
 .Sq \&[ ,
 ends before the final
 .Sq \&] ,
 and the escape sequence ends with the final
 .Sq \&] .
 .It Two-character argument short form: Ic \&( Ns Ar ar
 This form can only be used for arguments
 consisting of exactly two characters.
 It has the same effect as
 .Ic \&[ Ns Ar ar Ns Ic \&] .
 .It One-character argument short form: Ar a
 This form can only be used for arguments
 consisting of exactly one character.
 It has the same effect as
 .Ic \&[ Ns Ar a Ns Ic \&] .
 .It Delimited form: Ar C Ns Ar argument Ns Ar C
 The argument starts after the initial delimiter character
 .Ar C ,
 ends before the next occurrence of the delimiter character
 .Ar C ,
 and the escape sequence ends with that second
 .Ar C .
 Some escape sequences allow arbitrary characters
 .Ar C
 as quoting characters, some restrict the range of characters
 that can be used as quoting characters.
 .El
 .Pp
 Upon function entry,
 .Fa end
 is expected to point to the escape sequence identifier.
 The values passed in as
 .Fa start
 and
 .Fa sz
 are ignored and overwritten.
 .Pp
 By design, this function cannot handle those
 .Xr roff 7
 escape sequences that require in-place expansion, in particular
 user-defined strings
 .Ic \e* ,
 number registers
 .Ic \en ,
 width measurements
 .Ic \ew ,
 and numerical expression control
 .Ic \eB .
 These are handled by
 .Fn roff_res ,
 a private preprocessor function called from
 .Fn roff_parseln ,
 see the file
 .Pa roff.c .
 .Pp
 The function
 .Fn mandoc_escape
 is used
 .Bl -dash -compact -width 2n
 .It
 recursively by itself, because some escape sequence arguments can
 in turn contain other escape sequences,
 .It
 for error detection internally by the
 .Xr roff 7
 parser part of the
 .Xr mandoc 3
 library, see the file
 .Pa roff.c ,
 .It
 above all externally by the
-.Xr mandoc
+.Xr mandoc 1
 formatting modules, in particular
 .Fl Tascii
 and
 .Fl Thtml ,
 for formatting purposes, see the files
 .Pa term.c
 and
 .Pa html.c ,
 .It
 and rarely externally by high-level utilities using the mandoc library,
 for example
 .Xr makewhatis 8 ,
 to purge escape sequences from text.
 .El
 .Sh RETURN VALUES
 Upon function return, the pointer
 .Fa end
 is set to the character after the end of the escape sequence,
 such that the calling higher-level parser can easily continue.
 .Pp
 For escape sequences taking an argument, the pointer
 .Fa start
 is set to the beginning of the argument and
 .Fa sz
 is set to the length of the argument.
 For escape sequences not taking an argument,
 .Fa start
 is set to the character after the end of the sequence and
 .Fa sz
 is set to 0.
 Both
 .Fa start
 and
 .Fa sz
 may be
 .Dv NULL ;
 in that case, the argument and the length are not returned.
 .Pp
 For sequences taking an argument, the function
 .Fn mandoc_escape
 returns one of the following values:
 .Bl -tag -width 2n
 .It Dv ESCAPE_FONT
 The escape sequence
 .Ic \ef
 taking an argument in standard form:
 .Ic \ef[ , \ef( , \ef Ns Ar a .
 Two-character arguments starting with the character
 .Sq C
 are reduced to one-character arguments by skipping the
 .Sq C .
 More specific values are returned for the most commonly used arguments:
 .Bl -column "argument" "ESCAPE_FONTITALIC"
 .It argument Ta return value
 .It Cm R No or Cm 1 Ta Dv ESCAPE_FONTROMAN
 .It Cm I No or Cm 2 Ta Dv ESCAPE_FONTITALIC
 .It Cm B No or Cm 3 Ta Dv ESCAPE_FONTBOLD
 .It Cm P Ta Dv ESCAPE_FONTPREV
 .It Cm BI Ta Dv ESCAPE_FONTBI
 .El
 .It Dv ESCAPE_SPECIAL
 The escape sequence
 .Ic \eC
 taking an argument delimited with the single quote character
 and, as a special exception, the escape sequences
 .Em not
 having an identifier, that is, those where the argument, in standard
 form, directly follows the initial backslash:
 .Ic \eC' , \e[ , \e( , \e Ns Ar a .
 Note that the one-character argument short form can only be used for
 argument characters that do not clash with escape sequence identifiers.
 .Pp
 If the argument matches one of the forms described below under
 .Dv ESCAPE_UNICODE ,
 that value is returned instead.
 .Pp
 The
 .Dv ESCAPE_SPECIAL
 special character escape sequences can be rendered using the functions
 .Fn mchars_spec2cp
 and
 .Fn mchars_spec2str
 described in the
 .Xr mchars_alloc 3
 manual.
 .It Dv ESCAPE_UNICODE
 Escape sequences of the same format as described above under
 .Dv ESCAPE_SPECIAL ,
 but with an argument of the forms
 .Ic u Ns Ar XXXX ,
 .Ic u Ns Ar YXXXX ,
 or
 .Ic u10 Ns Ar XXXX
 where
 .Ar X
 and
 .Ar Y
 are hexadecimal digits and
 .Ar Y
 is not zero:
 .Ic \eC'u , \e[u .
 As a special exception,
 .Fa start
 is set to the character after the
 .Ic u ,
 and the
 .Fa sz
 return value does not include the
 .Ic u
 either.
 .Pp
 Such Unicode character escape sequences can be rendered using the function
 .Fn mchars_num2uc
 described in the
 .Xr mchars_alloc 3
 manual.
 .It Dv ESCAPE_NUMBERED
 The escape sequence
 .Ic \eN
 followed by a delimited argument.
 The delimiter character is arbitrary except that digits cannot be used.
 If a digit is encountered instead of the opening delimiter, that
 digit is considered to be the argument and the end of the sequence, and
 .Dv ESCAPE_IGNORE
 is returned.
 .Pp
 Such ASCII character escape sequences can be rendered using the function
 .Fn mchars_num2char
 described in the
 .Xr mchars_alloc 3
 manual.
 .It Dv ESCAPE_OVERSTRIKE
 The escape sequence
 .Ic \eo
 followed by an argument delimited by an arbitrary character.
 .It Dv ESCAPE_IGNORE
 .Bl -bullet -width 2n
 .It
 The escape sequence
 .Ic \es
 followed by an argument in standard form or by an argument delimited
 by the single quote character:
 .Ic \es' , \es[ , \es( , \es Ns Ar a .
 As a special exception, an optional
 .Sq +
 or
 .Sq \-
 character is allowed after the
 .Sq s
 for all forms.
 .It
 The escape sequences
 .Ic \eF ,
 .Ic \eg ,
 .Ic \ek ,
 .Ic \eM ,
 .Ic \em ,
 .Ic \en ,
 .Ic \eV ,
 and
 .Ic \eY
 followed by an argument in standard form.
 .It
 The escape sequences
 .Ic \eA ,
 .Ic \eb ,
 .Ic \eD ,
 .Ic \eR ,
 .Ic \eX ,
 and
 .Ic \eZ
 followed by an argument delimited by an arbitrary character.
 .It
 The escape sequences
 .Ic \eH ,
 .Ic \eh ,
 .Ic \eL ,
 .Ic \el ,
 .Ic \eS ,
 .Ic \ev ,
 and
 .Ic \ex
 followed by an argument delimited by a character that cannot occur
 in numerical expressions.
 However, if any character that can occur in numerical expressions
 is found instead of a delimiter, the sequence is considered to end
 with that character, and
 .Dv ESCAPE_ERROR
 is returned.
 .El
 .It Dv ESCAPE_ERROR
 Escape sequences taking an argument but not matching any of the above patterns.
 In particular, that happens if the end of the logical input line
 is reached before the end of the argument.
 .El
 .Pp
 For sequences that do not take an argument, the function
 .Fn mandoc_escape
 returns one of the following values:
 .Bl -tag -width 2n
 .It Dv ESCAPE_SKIPCHAR
 The escape sequence
 .Qq \ez .
 .It Dv ESCAPE_NOSPACE
 The escape sequence
 .Qq \ec .
 .It Dv ESCAPE_IGNORE
 The escape sequences
 .Qq \ed
 and
 .Qq \eu .
 .El
 .Sh FILES
 This function is implemented in
 .Pa mandoc.c .
 .Sh SEE ALSO
 .Xr mchars_alloc 3 ,
 .Xr mandoc_char 7 ,
 .Xr roff 7
 .Sh HISTORY
 This function has been available since mandoc 1.11.2.
 .Sh AUTHORS
 .An Kristaps Dzonsons Aq Mt kristaps@bsd.lv
 .An Ingo Schwarze Aq Mt schwarze@openbsd.org
 .Sh BUGS
 The function doesn't cleanly distinguish between sequences that are
 valid and supported, valid and ignored, valid and unsupported,
 syntactically invalid, or undefined.
 For sequences that are ignored or unsupported, it doesn't tell
 whether that deficiency is likely to cause major formatting problems
 and/or loss of document content.
 The function is already rather complicated and still parses some
 sequences incorrectly.
 .
 .ig
 For these sequences, the list given below specifies a starting string
 and either the length of the argument or an ending character.
 The argument starts after the starting string.
 In the former case, the sequence ends with the end of the argument.
 In the latter case, the argument ends before the ending character,
 and the sequence ends with the ending character.
 ..
Index: vendor/mdocml/dist/mandoc_headers.3
===================================================================
--- vendor/mdocml/dist/mandoc_headers.3	(revision 321806)
+++ vendor/mdocml/dist/mandoc_headers.3	(revision 321807)
@@ -1,570 +1,570 @@
-.Dd December 1, 2014
+.Dd $Mdocdate: July 8 2017 $
 .Dt MANDOC_HEADERS 3
 .Os
 .Sh NAME
 .Nm mandoc_headers
 .Nd ordering of mandoc include files
 .Sh DESCRIPTION
 To support a cleaner coding style, the mandoc header files do not
 contain any include directives and do not guard against multiple
 inclusion.
 The application developer has to make sure that the headers are
 included in a proper order, and that no header is included more
 than once.
 .Pp
 The headers and functions form three major groups:
 .Sx Parser interface ,
 .Sx Parser internals ,
 and
 .Sx Formatter interface .
 .Pp
 Various rules are given below prohibiting the inclusion of certain
 combinations of headers into the same file.
 The intention is to keep the following functional components
 separate from each other:
 .Pp
 .Bl -dash -offset indent -compact
 .It
 .Xr mdoc 7
 parser
 .It
 .Xr man 7
 parser
 .It
 .Xr roff 7
 parser
 .It
 .Xr tbl 7
 parser
 .It
 .Xr eqn 7
 parser
 .It
 terminal formatters
 .It
 HTML formatters
 .It
 search tools
 .El
 .Pp
 Note that mere usage of an opaque struct type does
 .Em not
 require inclusion of the header where that type is defined.
 .Ss Parser interface
 Each of the following headers can be included without including
 any other mandoc header.
 These headers should be included before any other mandoc headers.
 .Bl -tag -width Ds
 .It Qq Pa mandoc_aux.h
 Requires
 .In sys/types.h
 for
 .Vt size_t .
 .Pp
 Provides the utility functions documented in
 .Xr mandoc_malloc 3 .
 .It Qq Pa mandoc_ohash.h
 Requires
 .In stddef.h
 for
 .Vt ptrdiff_t
 and
 .In stdint.h
 for
 .Vt uint32_t .
 .Pp
 Includes
 .In ohash.h
 and provides
 .Fn mandoc_ohash_init .
 .It Qq Pa mandoc.h
 Requires
 .In sys/types.h
 for
 .Vt size_t .
 .Pp
 Provides
 .Vt enum mandoc_esc ,
 .Vt enum mandocerr ,
 .Vt enum mandoclevel ,
+.Vt enum mandoc_os ,
 .Vt enum tbl_cellt ,
 .Vt enum tbl_datt ,
 .Vt enum tbl_spant ,
 .Vt enum eqn_boxt ,
 .Vt enum eqn_fontt ,
 .Vt enum eqn_pilet ,
 .Vt enum eqn_post ,
 .Vt struct tbl_opts ,
 .Vt struct tbl_cell ,
 .Vt struct tbl_row ,
 .Vt struct tbl_dat ,
 .Vt struct tbl_span ,
 .Vt struct eqn_box ,
-.Vt struct eqn ,
 the function prototype typedef
 .Fn mandocmsg ,
 the function
 .Xr mandoc_escape 3 ,
 the functions described in
 .Xr mchars_alloc 3 ,
 and the functions
 .Fn mparse_*
 described in
 .Xr mandoc 3 .
 .Pp
 Uses the opaque type
 .Vt struct mparse
 from
 .Pa read.c
 for function prototypes.
 Uses the type
 .Vt struct roff_man
 from
 .Pa roff.h
 as an opaque type for function prototypes.
+.It Qq Pa mandoc_xr.h
+Provides
+.Vt struct mandoc_xr
+and the functions
+.Fn mandoc_xr_reset ,
+.Fn mandoc_xr_add ,
+.Fn mandoc_xr_get ,
+and
+.Fn mandoc_xr_free .
 .It Qq Pa roff.h
 Requires
 .Qq Pa mandoc_ohash.h
 for
-.Vt struct ohash .
+.Vt struct ohash
+and
+.Qq Pa mandoc.h
+for
+.Vt enum mandoc_os .
 .Pp
 Provides
 .Vt enum mdoc_endbody ,
 .Vt enum roff_macroset ,
 .Vt enum roff_next ,
 .Vt enum roff_sec ,
 .Vt enum roff_tok ,
 .Vt enum roff_type ,
 .Vt struct roff_man ,
 .Vt struct roff_meta ,
 .Vt struct roff_node ,
 the constant array
 .Va roff_name
 and the functions
 .Fn deroff ,
 .Fn roffhash_alloc ,
 .Fn roffhash_find ,
 .Fn roffhash_free ,
 and
 .Fn roff_validate .
 .Pp
 Uses pointers to the types
 .Vt struct mdoc_arg
 and
 .Vt union mdoc_data
 from
 .Pa mdoc.h
 as opaque struct members.
 .El
 .Pp
 The following two require
 .Qq Pa roff.h
 but no other mandoc headers.
 Afterwards, any other mandoc headers can be included as needed.
 .Bl -tag -width Ds
 .It Qq Pa mdoc.h
 Requires
 .In sys/types.h
 for
 .Vt size_t .
 .Pp
 Provides
 .Vt enum mdocargt ,
 .Vt enum mdoc_auth ,
 .Vt enum mdoc_disp ,
 .Vt enum mdoc_font ,
 .Vt enum mdoc_list ,
 .Vt struct mdoc_argv ,
 .Vt struct mdoc_arg ,
 .Vt struct mdoc_an ,
 .Vt struct mdoc_bd ,
 .Vt struct mdoc_bf ,
 .Vt struct mdoc_bl ,
 .Vt struct mdoc_rs ,
 .Vt union mdoc_data ,
 and the functions
 .Fn mdoc_*
 described in
 .Xr mandoc 3 .
 .Pp
 Uses the type
 .Vt struct roff_man
 from
 .Pa roff.h
 as an opaque type for function prototypes.
 .Pp
 When this header is included, the same file should not include
 .Pa libman.h
 or
 .Pa libroff.h .
 .It Qq Pa man.h
 Provides the functions
 .Fn man_*
 described in
 .Xr mandoc 3 .
 .Pp
 Uses the opaque type
 .Vt struct mparse
 from
 .Pa read.c
 for function prototypes.
 Uses the type
 .Vt struct roff_man
 from
 .Pa roff.h
 as an opaque type for function prototypes.
 .Pp
 When this header is included, the same file should not include
 .Pa libmdoc.h
 or
 .Pa libroff.h .
 .El
 .Ss Parser internals
 The following headers require inclusion of a parser interface header
 before they can be included.
 All parser interface headers should precede all parser internal headers.
 When any parser internal headers are included, the same file should
 not include any formatter headers.
 .Bl -tag -width Ds
 .It Qq Pa libmandoc.h
 Requires
 .In sys/types.h
 for
 .Vt size_t
 and
 .Qq Pa mandoc.h
 for
 .Vt enum mandocerr .
 .Pp
 Provides
 .Vt enum rofferr ,
 .Vt struct buf ,
 utility functions needed by multiple parsers,
 and the top-level functions to call the parsers.
 .Pp
 Uses the opaque types
 .Vt struct mparse
 from
 .Pa read.c
 and
 .Vt struct roff
 from
 .Pa roff.c
 for function prototypes.
-Uses the types
-.Vt struct tbl_span
-and
-.Vt struct eqn
-from
-.Pa mandoc.h
-and
+Uses the type
 .Vt struct roff_man
 from
 .Pa roff.h
-as opaque types for function prototypes.
+as an opaque type for function prototypes.
 .It Qq Pa roff_int.h
 Requires
 .Qq Pa roff.h
 for
 .Vt enum roff_type .
 .Pp
 Provides functions named
 .Fn roff_*
 to handle roff nodes and the two special functions
 .Fn man_breakscope
 and
 .Fn mdoc_argv_free
 because the latter two are needed by
 .Qq Pa roff.c .
 .Pp
 Uses the types
-.Vt struct eqn
-and
-.Vt struct tbl_span
-from
-.Pa mandoc.h ,
 .Vt struct roff_man
 and
 .Vt struct roff_node
 from
-.Pa roff.h ,
+.Pa roff.h
 and
 .Vt struct mdoc_arg
 from
 .Pa mdoc.h
 as opaque types for function prototypes.
 .It Qq Pa libmdoc.h
 Requires
 .Qq Pa roff.h
 for
 .Vt enum roff_tok
 and
 .Qq Pa mdoc.h
 for
 .Vt enum mdoc_*
 and
 .Vt struct mdoc_* .
 .Pp
 Provides
 .Vt enum margserr ,
 .Vt enum mdelim ,
 .Vt struct mdoc_macro ,
 and many functions internal to the
 .Xr mdoc 7
 parser.
 .Pp
 Uses the opaque type
 .Vt struct mparse
 from
 .Pa read.c .
 Uses the types
 .Vt struct roff_man
 and
 .Vt struct roff_node
 from
 .Pa roff.h
 as opaque types for function prototypes.
 .Pp
 When this header is included, the same file should not include
 .Pa man.h ,
 .Pa libman.h ,
 or
 .Pa libroff.h .
 .It Qq Pa libman.h
 Requires
 .Qq Pa roff.h
 for
 .Vt enum roff_tok .
 .Pp
 Provides
 .Vt struct man_macro
 and some functions internal to the
 .Xr man 7
 parser.
 .Pp
 Uses the types
 .Vt struct roff_man
 and
 .Vt struct roff_node
 from
 .Pa roff.h
 as opaque types for function prototypes.
 .Pp
 When this header is included, the same file should not include
 .Pa mdoc.h ,
 .Pa libmdoc.h ,
 or
 .Pa libroff.h .
 .It Qq Pa libroff.h
 Requires
 .In sys/types.h
 for
-.Vt size_t ,
+.Vt size_t
+and
 .Qq Pa mandoc.h
 for
 .Vt struct tbl_*
 and
-.Vt struct eqn ,
-and
-.Qq Pa libmandoc.h
-for
-.Vt enum rofferr .
+.Vt struct eqn_box .
 .Pp
 Provides
 .Vt enum tbl_part ,
 .Vt struct tbl_node ,
 .Vt struct eqn_def ,
 .Vt struct eqn_node ,
 and many functions internal to the
 .Xr tbl 7
 and
 .Xr eqn 7
 parsers.
 .Pp
 Uses the opaque type
 .Vt struct mparse
 from
 .Pa read.c .
 .Pp
 When this header is included, the same file should not include
 .Pa man.h ,
 .Pa mdoc.h ,
 .Pa libman.h ,
 or
 .Pa libmdoc.h .
 .El
 .Ss Formatter interface
 These headers should be included after any parser interface headers.
 No parser internal headers should be included by the same file.
 .Bl -tag -width Ds
 .It Qq Pa out.h
 Requires
 .In sys/types.h
 for
 .Vt size_t .
 .Pp
 Provides
 .Vt enum roffscale ,
 .Vt struct roffcol ,
 .Vt struct roffsu ,
 .Vt struct rofftbl ,
 .Fn a2roffsu ,
 and
 .Fn tblcalc .
 .Pp
 Uses
 .Vt struct tbl_span
 from
 .Pa mandoc.h
 as an opaque type for function prototypes.
 .Pp
 When this header is included, the same file should not include
 .Pa mansearch.h .
 .It Qq Pa term.h
 Requires
 .In sys/types.h
 for
 .Vt size_t
 and
 .Qq Pa out.h
 for
 .Vt struct roffsu
 and
 .Vt struct rofftbl .
 .Pp
 Provides
 .Vt enum termenc ,
 .Vt enum termfont ,
 .Vt enum termtype ,
 .Vt struct termp_tbl ,
 .Vt struct termp ,
 .Fn roff_term_pre ,
 and many terminal formatting functions.
 .Pp
 Uses the opaque type
 .Vt struct termp_ps
 from
 .Pa term_ps.c .
 Uses
 .Vt struct tbl_span
 and
-.Vt struct eqn
+.Vt struct eqn_box
 from
 .Pa mandoc.h
 and
 .Vt struct roff_meta
 and
 .Vt struct roff_node
 from
 .Pa roff.h
 as opaque types for function prototypes.
 .Pp
 When this header is included, the same file should not include
 .Pa html.h
 or
 .Pa mansearch.h .
 .It Qq Pa html.h
 Requires
 .In sys/types.h
 for
 .Vt size_t
 and
 .Qq Pa out.h
 for
 .Vt struct roffsu
 and
 .Vt struct rofftbl .
 .Pp
 Provides
 .Vt enum htmltag ,
 .Vt enum htmlattr ,
 .Vt enum htmlfont ,
 .Vt struct tag ,
 .Vt struct tagq ,
 .Vt struct htmlpair ,
 .Vt struct html ,
 .Fn roff_html_pre ,
 and many HTML formatting functions.
 .Pp
 Uses
 .Vt struct tbl_span
 and
-.Vt struct eqn
+.Vt struct eqn_box
 from
 .Pa mandoc.h
 and
 .Vt struct roff_node
 from
 .Pa roff.h
 as opaque types for function prototypes.
 .Pp
 When this header is included, the same file should not include
 .Pa term.h
 or
 .Pa mansearch.h .
 .It Qq Pa tag.h
 Requires
 .In sys/types.h
 for
 .Vt size_t .
 .Pp
 Provides an interface to generate
 .Xr ctags 1
 files for the
 .Ic :t
 functionality mentioned in
 .Xr man 1 .
 .It Qq Pa main.h
 Provides the top level steering functions for all formatters.
 .Pp
 Uses the type
 .Vt struct roff_man
 from
 .Pa roff.h
 as an opaque type for function prototypes.
 .It Qq Pa manconf.h
 Requires
 .In sys/types.h
 for
 .Vt size_t .
 .Pp
 Provides
 .Vt struct manconf ,
 .Vt struct manpaths ,
 .Vt struct manoutput ,
 and the functions
 .Fn manconf_parse ,
 .Fn manconf_output ,
+.Fn manconf_free ,
 and
-.Fn manconf_free .
+.Fn manpath_base .
 .It Qq Pa mansearch.h
 Requires
 .In sys/types.h
 for
 .Vt size_t
 and
 .In stdint.h
 for
 .Vt uint64_t .
 .Pp
 Provides
 .Vt enum argmode ,
 .Vt struct manpage ,
 .Vt struct mansearch ,
 and the functions
 .Fn mansearch
 and
 .Fn mansearch_free .
 .Pp
 Uses
 .Vt struct manpaths
 from
 .Pa manconf.h
 as an opaque type for function prototypes.
 .Pp
 When this header is included, the same file should not include
 .Pa out.h ,
 .Pa term.h ,
 or
 .Pa html.h .
 .El
Index: vendor/mdocml/dist/mandoc_html.3
===================================================================
--- vendor/mdocml/dist/mandoc_html.3	(revision 321806)
+++ vendor/mdocml/dist/mandoc_html.3	(revision 321807)
@@ -1,395 +1,385 @@
-.\"	$Id: mandoc_html.3,v 1.8 2017/05/12 17:58:21 schwarze Exp $
+.\"	$Id: mandoc_html.3,v 1.10 2017/07/15 17:57:51 schwarze Exp $
 .\"
 .\" Copyright (c) 2014, 2017 Ingo Schwarze 
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above
 .\" copyright notice and this permission notice appear in all copies.
 .\"
 .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: May 12 2017 $
+.Dd $Mdocdate: July 15 2017 $
 .Dt MANDOC_HTML 3
 .Os
 .Sh NAME
 .Nm mandoc_html
 .Nd internals of the mandoc HTML formatter
 .Sh SYNOPSIS
 .In "html.h"
 .Ft void
 .Fn print_gen_decls "struct html *h"
 .Ft void
 .Fn print_gen_head "struct html *h"
 .Ft struct tag *
 .Fo print_otag
 .Fa "struct html *h"
 .Fa "enum htmltag tag"
 .Fa "const char *fmt"
 .Fa ...
 .Fc
 .Ft void
 .Fo print_tagq
 .Fa "struct html *h"
 .Fa "const struct tag *until"
 .Fc
 .Ft void
 .Fo print_stagq
 .Fa "struct html *h"
 .Fa "const struct tag *suntil"
 .Fc
 .Ft void
 .Fo print_text
 .Fa "struct html *h"
 .Fa "const char *word"
 .Fc
 .Ft char *
 .Fo html_make_id
 .Fa "const struct roff_node *n"
 .Fc
 .Ft int
 .Fo html_strlen
 .Fa "const char *cp"
 .Fc
 .Sh DESCRIPTION
 The mandoc HTML formatter is not a formal library.
 However, as it is compiled into more than one program, in particular
 .Xr mandoc 1
 and
 .Xr man.cgi 8 ,
 and because it may be security-critical in some contexts,
 some documentation is useful to help to use it correctly and
 to prevent XSS vulnerabilities.
 .Pp
 The formatter produces HTML output on the standard output.
 Since proper escaping is usually required and best taken care of
 at one central place, the language-specific formatters
 .Po
 .Pa *_html.c ,
 see
 .Sx FILES
 .Pc
 are not supposed to print directly to
 .Dv stdout
 using functions like
 .Xr printf 3 ,
 .Xr putc 3 ,
 .Xr puts 3 ,
 or
 .Xr write 2 .
 Instead, they are expected to use the output functions declared in
 .Pa html.h
 and implemented as part of the main HTML formatting engine in
 .Pa html.c .
 .Ss Data structures
 These structures are declared in
 .Pa html.h .
 .Bl -tag -width Ds
 .It Vt struct html
 Internal state of the HTML formatter.
 .It Vt struct tag
 One entry for the LIFO stack of HTML elements.
 Members are
 .Fa "enum htmltag tag"
 and
 .Fa "struct tag *next" .
 .El
 .Ss Private interface functions
 The function
 .Fn print_gen_decls
 prints the opening
 .Ao Pf \&? Ic xml ? Ac
 and
 .Aq Pf \&! Ic DOCTYPE
 declarations required for the current document type.
 .Pp
 The function
 .Fn print_gen_head
 prints the opening
 .Aq Ic META
 and
 .Aq Ic LINK
 elements for the document
 .Aq Ic HEAD ,
 using the
 .Fa style
 member of
 .Fa h
 unless that is
 .Dv NULL .
 It uses
 .Fn print_otag
 which takes care of properly encoding attributes,
 which is relevant for the
 .Fa style
 link in particular.
 .Pp
 The function
 .Fn print_otag
 prints the start tag of an HTML element with the name
 .Fa tag ,
 optionally including the attributes specified by
 .Fa fmt .
 If
 .Fa fmt
 is the empty string, no attributes are written.
 Each letter of
 .Fa fmt
 specifies one attribute to write.
 Most attributes require one
 .Va char *
 argument which becomes the value of the attribute.
 The arguments have to be given in the same order as the attribute letters.
 If an argument is
 .Dv NULL ,
 the respective attribute is not written.
 .Bl -tag -width 1n -offset indent
 .It Cm c
 Print a
 .Cm class
 attribute.
 This attribute letter can optionally be followed by the modifier letter
 .Cm T .
 In that case, a
 .Cm title
 attribute with the same value is also printed.
 .It Cm h
 Print a
 .Cm href
 attribute.
 This attribute letter can optionally be followed by a modifier letter.
 If followed by
 .Cm R ,
 it formats the link as a local one by prefixing a
 .Sq #
 character.
 If followed by
 .Cm I ,
 it interpretes the argument as a header file name
 and generates a link using the
 .Xr mandoc 1
 .Fl O Cm includes
 option.
 If followed by
 .Cm M ,
 it takes two arguments instead of one, a manual page name and
 section, and formats them as a link to a manual page using the
 .Xr mandoc 1
 .Fl O Cm man
 option.
 .It Cm i
 Print an
 .Cm id
 attribute.
 .It Cm \&?
 Print an arbitrary attribute.
 This format letter requires two
 .Vt char *
 arguments, the attribute name and the value.
 The name must not be
 .Dv NULL .
 .It Cm s
 Print a
 .Cm style
 attribute.
 If present, it must be the last format letter.
 In contrast to the other format letters, this one does not yet
 print the value and does not take an argument.
 Instead, the rest of the format string consists of pairs of
 argument type letters and style name letters.
 .El
 .Pp
 Argument type letters each require one argument as follows:
 .Bl -tag -width 1n -offset indent
 .It Cm h
 Requires one
 .Vt int
 argument, interpreted as a horizontal length in units of
 .Dv SCALE_EN .
 .It Cm s
 Requires one
 .Vt char *
 argument, used as a style value.
 .It Cm u
 Requires one
 .Vt struct roffsu *
 argument, used as a length.
-.It Cm v
-Requires one
-.Vt int
-argument, interpreted as a vertical length in units of
-.Dv SCALE_VS .
 .It Cm w
 Requires one
 .Vt char *
 argument, interpreted as an
 .Xr mdoc 7 Ns -style
 width specifier.
 If the argument is
 .Dv NULL ,
 nothing is printed for this pair.
 .Pp
 The
 .Cm w
-argument type letter can optionally be followed by one or two
+argument type letter can optionally be followed by one, two, or three
 modifier letters.
 The modifier
+.Cm *
+suppresses printing of the pair if the argument matches 6n.
+The modifier
 .Cm +
-increases the width by 10% to make even bold text fit
-and adds two units for padding between columns.
+increases the width by 20% to make even bold text fit
+and adds three units for padding between columns.
 The modifier
 .Cm \-
 makes the width negative by multiplying it with \-1.
 .El
 .Pp
 Style name letters decide what to do with the preceding argument:
 .Bl -tag -width 1n -offset indent
-.It Cm b
-Set
-.Cm margin-bottom
-to the given length.
 .It Cm h
 Set
 .Cm height
 to the given length.
 .It Cm i
 Set
 .Cm text-indent
 to the given length.
 .It Cm l
 Set
 .Cm margin-left
-to the given length.
-.It Cm t
-Set
-.Cm margin-top
 to the given length.
 .It Cm w
 Set
 .Cm width
 to the given length.
 .It Cm W
 Set
 .Cm min-width
 to the given length.
 .It Cm \&?
 The special pair
 .Cm s?
 requires two
 .Vt char *
 arguments.
 The first is the style name, the second its value.
 The style name must not be
 .Dv NULL .
 .El
 .Pp
 .Fn print_otag
 uses the private function
 .Fn print_encode
 to take care of HTML encoding.
 If required by the element type, it remembers in
 .Fa h
 that the element is open.
 The function
 .Fn print_tagq
 is used to close out all open elements up to and including
 .Fa until ;
 .Fn print_stagq
 is a variant to close out all open elements up to but excluding
 .Fa suntil .
 .Pp
 The function
 .Fn print_text
 prints HTML element content.
 It uses the private function
 .Fn print_encode
 to take care of HTML encoding.
 If the document has requested a non-standard font, for example using a
 .Xr roff 7
 .Ic \ef
 font escape sequence,
 .Fn print_text
 wraps
 .Fa word
 in an HTML font selection element using the
 .Fn print_otag
 and
 .Fn print_tagq
 functions.
 .Pp
 The function
 .Fn html_make_id
 takes a node containing one or more text children
 and returns a newly allocated string containing the concatenation
 of the child strings, with blanks replaced by underscores.
 If the node
 .Fa n
 contains any non-text child node,
 .Fn html_make_id
 returns
 .Dv NULL
 instead.
 The caller is responsible for freeing the returned string.
 .Pp
 The function
 .Fn html_strlen
 counts the number of characters in
 .Fa cp .
 It is used as a crude estimate of the width needed to display a string.
 .Pp
 The functions
 .Fn print_eqn ,
 .Fn print_tbl ,
 and
 .Fn print_tblclose
 are not yet documented.
 .Sh FILES
 .Bl -tag -width mandoc_aux.c -compact
 .It Pa main.h
 declarations of public functions for use by the main program,
 not yet documented
 .It Pa html.h
 declarations of data types and private functions
 for use by language-specific HTML formatters
 .It Pa html.c
 main HTML formatting engine and utility functions
 .It Pa mdoc_html.c
 .Xr mdoc 7
 HTML formatter
 .It Pa man_html.c
 .Xr man 7
 HTML formatter
 .It Pa tbl_html.c
 .Xr tbl 7
 HTML formatter
 .It Pa eqn_html.c
 .Xr eqn 7
 HTML formatter
 .It Pa out.h
 declarations of data types and private functions
 for shared use by all mandoc formatters,
 not yet documented
 .It Pa out.c
 private functions for shared use by all mandoc formatters
 .It Pa mandoc_aux.h
 declarations of common mandoc utility functions, see
 .Xr mandoc 3
 .It Pa mandoc_aux.c
 implementation of common mandoc utility functions
 .El
 .Sh SEE ALSO
 .Xr mandoc 1 ,
 .Xr mandoc 3 ,
 .Xr man.cgi 8
 .Sh AUTHORS
 .An -nosplit
 The mandoc HTML formatter was written by
 .An Kristaps Dzonsons Aq Mt kristaps@bsd.lv .
 It is maintained by
 .An Ingo Schwarze Aq Mt schwarze@openbsd.org ,
 who also wrote this manual.
Index: vendor/mdocml/dist/mandoc_xr.c
===================================================================
--- vendor/mdocml/dist/mandoc_xr.c	(nonexistent)
+++ vendor/mdocml/dist/mandoc_xr.c	(revision 321807)
@@ -0,0 +1,121 @@
+/*	$Id: mandoc_xr.c,v 1.3 2017/07/02 21:18:29 schwarze Exp $ */
+/*
+ * Copyright (c) 2017 Ingo Schwarze 
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#include 
+
+#include 
+#include 
+#include 
+#include 
+#include 
+
+#include "mandoc_aux.h"
+#include "mandoc_ohash.h"
+#include "mandoc_xr.h"
+
+static struct ohash	 *xr_hash = NULL;
+static struct mandoc_xr	 *xr_first = NULL;
+static struct mandoc_xr	 *xr_last = NULL;
+
+static void		  mandoc_xr_clear(void);
+
+
+static void
+mandoc_xr_clear(void)
+{
+	struct mandoc_xr	*xr;
+	unsigned int		 slot;
+
+	if (xr_hash == NULL)
+		return;
+	for (xr = ohash_first(xr_hash, &slot); xr != NULL;
+	     xr = ohash_next(xr_hash, &slot))
+		free(xr);
+	ohash_delete(xr_hash);
+}
+
+void
+mandoc_xr_reset(void)
+{
+	if (xr_hash == NULL)
+		xr_hash = mandoc_malloc(sizeof(*xr_hash));
+	else
+		mandoc_xr_clear();
+	mandoc_ohash_init(xr_hash, 5,
+	    offsetof(struct mandoc_xr, hashkey));
+	xr_first = xr_last = NULL;
+}
+
+int
+mandoc_xr_add(const char *sec, const char *name, int line, int pos)
+{
+	struct mandoc_xr	 *xr, *oxr;
+	const char		 *pend;
+	size_t			  ssz, nsz, tsz;
+	unsigned int		  slot;
+	int			  ret;
+	uint32_t		  hv;
+
+	if (xr_hash == NULL)
+		return 0;
+
+	ssz = strlen(sec) + 1;
+	nsz = strlen(name) + 1;
+	tsz = ssz + nsz;
+	xr = mandoc_malloc(sizeof(*xr) + tsz);
+	xr->next = NULL;
+	xr->sec = xr->hashkey;
+	xr->name = xr->hashkey + ssz;
+	xr->line = line;
+	xr->pos = pos;
+	xr->count = 1;
+	memcpy(xr->sec, sec, ssz);
+	memcpy(xr->name, name, nsz);
+
+	pend = xr->hashkey + tsz;
+	hv = ohash_interval(xr->hashkey, &pend);
+	slot = ohash_lookup_memory(xr_hash, xr->hashkey, tsz, hv);
+	if ((oxr = ohash_find(xr_hash, slot)) == NULL) {
+		ohash_insert(xr_hash, slot, xr);
+		if (xr_first == NULL)
+			xr_first = xr;
+		else
+			xr_last->next = xr;
+		xr_last = xr;
+		return 0;
+	}
+
+	oxr->count++;
+	ret = (oxr->line == -1) ^ (xr->line == -1);
+	if (xr->line == -1)
+		oxr->line = -1;
+	free(xr);
+	return ret;
+}
+
+struct mandoc_xr *
+mandoc_xr_get(void)
+{
+	return xr_first;
+}
+
+void
+mandoc_xr_free(void)
+{
+	mandoc_xr_clear();
+	free(xr_hash);
+	xr_hash = NULL;
+}

Property changes on: vendor/mdocml/dist/mandoc_xr.c
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Added: svn:keywords
## -0,0 +1 ##
+FreeBSD=%H
\ No newline at end of property
Added: svn:mime-type
## -0,0 +1 ##
+text/plain
\ No newline at end of property
Index: vendor/mdocml/dist/mandoc_xr.h
===================================================================
--- vendor/mdocml/dist/mandoc_xr.h	(nonexistent)
+++ vendor/mdocml/dist/mandoc_xr.h	(revision 321807)
@@ -0,0 +1,31 @@
+/*	$Id: mandoc_xr.h,v 1.3 2017/07/02 21:18:29 schwarze Exp $ */
+/*
+ * Copyright (c) 2017 Ingo Schwarze 
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+struct	mandoc_xr {
+	struct mandoc_xr *next;
+	char		 *sec;
+	char		 *name;
+	int		  line;  /* Or -1 for this page's own names. */
+	int		  pos;
+	int		  count;
+	char		  hashkey[];
+};
+
+void		  mandoc_xr_reset(void);
+int		  mandoc_xr_add(const char *, const char *, int, int);
+struct mandoc_xr *mandoc_xr_get(void);
+void		  mandoc_xr_free(void);

Property changes on: vendor/mdocml/dist/mandoc_xr.h
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Added: svn:keywords
## -0,0 +1 ##
+FreeBSD=%H
\ No newline at end of property
Added: svn:mime-type
## -0,0 +1 ##
+text/plain
\ No newline at end of property
Index: vendor/mdocml/dist/mandocd.c
===================================================================
--- vendor/mdocml/dist/mandocd.c	(revision 321806)
+++ vendor/mdocml/dist/mandocd.c	(revision 321807)
@@ -1,285 +1,285 @@
-/*	$Id: mandocd.c,v 1.5 2017/02/17 14:31:52 schwarze Exp $ */
+/*	$Id: mandocd.c,v 1.6 2017/06/24 14:38:32 schwarze Exp $ */
 /*
  * Copyright (c) 2017 Michael Stapelberg 
  * Copyright (c) 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #if HAVE_CMSG_XPG42
 #define _XPG4_2
 #endif
 
 #include 
 #include 
 
 #if HAVE_ERR
 #include 
 #endif
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc.h"
 #include "roff.h"
 #include "mdoc.h"
 #include "man.h"
 #include "main.h"
 #include "manconf.h"
 
 enum	outt {
 	OUTT_ASCII = 0,
 	OUTT_UTF8,
 	OUTT_HTML
 };
 
 static	void	  process(struct mparse *, enum outt, void *);
 static	int	  read_fds(int, int *);
 static	void	  usage(void) __attribute__((__noreturn__));
 
 
 #define NUM_FDS 3
 static int
 read_fds(int clientfd, int *fds)
 {
 	struct msghdr	 msg;
 	struct iovec	 iov[1];
 	unsigned char	 dummy[1];
 	struct cmsghdr	*cmsg;
 	int		*walk;
 	int		 cnt;
 
 	/* Union used for alignment. */
 	union {
 		uint8_t controlbuf[CMSG_SPACE(NUM_FDS * sizeof(int))];
 		struct cmsghdr align;
 	} u;
 
 	memset(&msg, '\0', sizeof(msg));
 	msg.msg_control = u.controlbuf;
 	msg.msg_controllen = sizeof(u.controlbuf);
 
 	/*
 	 * Read a dummy byte - sendmsg cannot send an empty message,
 	 * even if we are only interested in the OOB data.
 	 */
 
 	iov[0].iov_base = dummy;
 	iov[0].iov_len = sizeof(dummy);
 	msg.msg_iov = iov;
 	msg.msg_iovlen = 1;
 
 	switch (recvmsg(clientfd, &msg, 0)) {
 	case -1:
 		warn("recvmsg");
 		return -1;
 	case 0:
 		return 0;
 	default:
 		break;
 	}
 
 	if ((cmsg = CMSG_FIRSTHDR(&msg)) == NULL) {
 		warnx("CMSG_FIRSTHDR: missing control message");
 		return -1;
 	}
 
 	if (cmsg->cmsg_level != SOL_SOCKET ||
 	    cmsg->cmsg_type != SCM_RIGHTS ||
 	    cmsg->cmsg_len != CMSG_LEN(NUM_FDS * sizeof(int))) {
 		warnx("CMSG_FIRSTHDR: invalid control message");
 		return -1;
 	}
 
 	walk = (int *)CMSG_DATA(cmsg);
 	for (cnt = 0; cnt < NUM_FDS; cnt++)
 		fds[cnt] = *walk++;
 
 	return 1;
 }
 
 int
 main(int argc, char *argv[])
 {
 	struct manoutput	 options;
 	struct mparse		*parser;
 	void			*formatter;
 	const char		*defos;
 	const char		*errstr;
 	int			 clientfd;
 	int			 old_stdin;
 	int			 old_stdout;
 	int			 old_stderr;
 	int			 fds[3];
 	int			 state, opt;
 	enum outt		 outtype;
 
 	defos = NULL;
 	outtype = OUTT_ASCII;
 	while ((opt = getopt(argc, argv, "I:T:")) != -1) {
 		switch (opt) {
 		case 'I':
 			if (strncmp(optarg, "os=", 3) == 0)
 				defos = optarg + 3;
 			else {
 				warnx("-I %s: Bad argument", optarg);
 				usage();
 			}
 			break;
 		case 'T':
 			if (strcmp(optarg, "ascii") == 0)
 				outtype = OUTT_ASCII;
 			else if (strcmp(optarg, "utf8") == 0)
 				outtype = OUTT_UTF8;
 			else if (strcmp(optarg, "html") == 0)
 				outtype = OUTT_HTML;
 			else {
 				warnx("-T %s: Bad argument", optarg);
 				usage();
 			}
 			break;
 		default:
 			usage();
 		}
 	}
 
 	if (argc > 0) {
 		argc -= optind;
 		argv += optind;
 	}
 	if (argc != 1)
 		usage();
 
 	errstr = NULL;
 	clientfd = strtonum(argv[0], 3, INT_MAX, &errstr);
 	if (errstr)
 		errx(1, "file descriptor %s %s", argv[1], errstr);
 
 	mchars_alloc();
 	parser = mparse_alloc(MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1,
-	    MANDOCLEVEL_BADARG, NULL, defos);
+	    MANDOCERR_MAX, NULL, MANDOC_OS_OTHER, defos);
 
 	memset(&options, 0, sizeof(options));
 	switch (outtype) {
 	case OUTT_ASCII:
 		formatter = ascii_alloc(&options);
 		break;
 	case OUTT_UTF8:
 		formatter = utf8_alloc(&options);
 		break;
 	case OUTT_HTML:
 		options.fragment = 1;
 		formatter = html_alloc(&options);
 		break;
 	}
 
 	state = 1;  /* work to do */
 	fflush(stdout);
 	fflush(stderr);
 	if ((old_stdin = dup(STDIN_FILENO)) == -1 ||
 	    (old_stdout = dup(STDOUT_FILENO)) == -1 ||
 	    (old_stderr = dup(STDERR_FILENO)) == -1) {
 		warn("dup");
 		state = -1;  /* error */
 	}
 
 	while (state == 1 && (state = read_fds(clientfd, fds)) == 1) {
 		if (dup2(fds[0], STDIN_FILENO) == -1 ||
 		    dup2(fds[1], STDOUT_FILENO) == -1 ||
 		    dup2(fds[2], STDERR_FILENO) == -1) {
 			warn("dup2");
 			state = -1;
 			break;
 		}
 
 		close(fds[0]);
 		close(fds[1]);
 		close(fds[2]);
 
 		process(parser, outtype, formatter);
 		mparse_reset(parser);
 
 		fflush(stdout);
 		fflush(stderr);
 		/* Close file descriptors by restoring the old ones. */
 		if (dup2(old_stderr, STDERR_FILENO) == -1 ||
 		    dup2(old_stdout, STDOUT_FILENO) == -1 ||
 		    dup2(old_stdin, STDIN_FILENO) == -1) {
 			warn("dup2");
 			state = -1;
 			break;
 		}
 	}
 
 	close(clientfd);
 	switch (outtype) {
 	case OUTT_ASCII:
 	case OUTT_UTF8:
 		ascii_free(formatter);
 		break;
 	case OUTT_HTML:
 		html_free(formatter);
 		break;
 	}
 	mparse_free(parser);
 	mchars_free();
 	return state == -1 ? 1 : 0;
 }
 
 static void
 process(struct mparse *parser, enum outt outtype, void *formatter)
 {
 	struct roff_man	 *man;
 
 	mparse_readfd(parser, STDIN_FILENO, "");
 	mparse_result(parser, &man, NULL);
 
 	if (man == NULL)
 		return;
 
 	if (man->macroset == MACROSET_MDOC) {
 		mdoc_validate(man);
 		switch (outtype) {
 		case OUTT_ASCII:
 		case OUTT_UTF8:
 			terminal_mdoc(formatter, man);
 			break;
 		case OUTT_HTML:
 			html_mdoc(formatter, man);
 			break;
 		}
 	}
 	if (man->macroset == MACROSET_MAN) {
 		man_validate(man);
 		switch (outtype) {
 		case OUTT_ASCII:
 		case OUTT_UTF8:
 			terminal_man(formatter, man);
 			break;
 		case OUTT_HTML:
 			html_man(formatter, man);
 			break;
 		}
 	}
 }
 
 void
 usage(void)
 {
 	fprintf(stderr, "usage: mandocd [-I os=name] [-T output] socket_fd\n");
 	exit(1);
 }
Index: vendor/mdocml/dist/mandocdb.c
===================================================================
--- vendor/mdocml/dist/mandocdb.c	(revision 321806)
+++ vendor/mdocml/dist/mandocdb.c	(revision 321807)
@@ -1,2337 +1,2338 @@
-/*	$Id: mandocdb.c,v 1.250 2017/05/17 22:27:12 schwarze Exp $ */
+/*	$Id: mandocdb.c,v 1.253 2017/07/28 14:48:25 schwarze Exp $ */
 /*
  * Copyright (c) 2011, 2012 Kristaps Dzonsons 
  * Copyright (c) 2011-2017 Ingo Schwarze 
  * Copyright (c) 2016 Ed Maste 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 #include 
 #include 
 
 #include 
 #include 
 #if HAVE_ERR
 #include 
 #endif
 #include 
 #include 
 #if HAVE_FTS
 #include 
 #else
 #include "compat_fts.h"
 #endif
 #include 
 #if HAVE_SANDBOX_INIT
 #include 
 #endif
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc_aux.h"
 #include "mandoc_ohash.h"
 #include "mandoc.h"
 #include "roff.h"
 #include "mdoc.h"
 #include "man.h"
 #include "manconf.h"
 #include "mansearch.h"
 #include "dba_array.h"
 #include "dba.h"
 
 extern const char *const mansearch_keynames[];
 
 enum	op {
 	OP_DEFAULT = 0, /* new dbs from dir list or default config */
 	OP_CONFFILE, /* new databases from custom config file */
 	OP_UPDATE, /* delete/add entries in existing database */
 	OP_DELETE, /* delete entries from existing database */
 	OP_TEST /* change no databases, report potential problems */
 };
 
 struct	str {
 	const struct mpage *mpage; /* if set, the owning parse */
 	uint64_t	 mask; /* bitmask in sequence */
 	char		 key[]; /* rendered text */
 };
 
 struct	inodev {
 	ino_t		 st_ino;
 	dev_t		 st_dev;
 };
 
 struct	mpage {
 	struct inodev	 inodev;  /* used for hashing routine */
 	struct dba_array *dba;
 	char		*sec;     /* section from file content */
 	char		*arch;    /* architecture from file content */
 	char		*title;   /* title from file content */
 	char		*desc;    /* description from file content */
 	struct mpage	*next;    /* singly linked list */
 	struct mlink	*mlinks;  /* singly linked list */
 	int		 name_head_done;
 	enum form	 form;    /* format from file content */
 };
 
 struct	mlink {
 	char		 file[PATH_MAX]; /* filename rel. to manpath */
 	char		*dsec;    /* section from directory */
 	char		*arch;    /* architecture from directory */
 	char		*name;    /* name from file name (not empty) */
 	char		*fsec;    /* section from file name suffix */
 	struct mlink	*next;    /* singly linked list */
 	struct mpage	*mpage;   /* parent */
 	int		 gzip;	  /* filename has a .gz suffix */
 	enum form	 dform;   /* format from directory */
 	enum form	 fform;   /* format from file name suffix */
 };
 
 typedef	int (*mdoc_fp)(struct mpage *, const struct roff_meta *,
 			const struct roff_node *);
 
 struct	mdoc_handler {
 	mdoc_fp		 fp; /* optional handler */
 	uint64_t	 mask;  /* set unless handler returns 0 */
 	int		 taboo;  /* node flags that must not be set */
 };
 
 
 int		 mandocdb(int, char *[]);
 
 static	void	 dbadd(struct dba *, struct mpage *);
 static	void	 dbadd_mlink(const struct mlink *mlink);
 static	void	 dbprune(struct dba *);
 static	void	 dbwrite(struct dba *);
 static	void	 filescan(const char *);
 #if HAVE_FTS_COMPARE_CONST
 static	int	 fts_compare(const FTSENT *const *, const FTSENT *const *);
 #else
 static	int	 fts_compare(const FTSENT **, const FTSENT **);
 #endif
 static	void	 mlink_add(struct mlink *, const struct stat *);
 static	void	 mlink_check(struct mpage *, struct mlink *);
 static	void	 mlink_free(struct mlink *);
 static	void	 mlinks_undupe(struct mpage *);
 static	void	 mpages_free(void);
 static	void	 mpages_merge(struct dba *, struct mparse *);
 static	void	 parse_cat(struct mpage *, int);
 static	void	 parse_man(struct mpage *, const struct roff_meta *,
 			const struct roff_node *);
 static	void	 parse_mdoc(struct mpage *, const struct roff_meta *,
 			const struct roff_node *);
 static	int	 parse_mdoc_head(struct mpage *, const struct roff_meta *,
 			const struct roff_node *);
 static	int	 parse_mdoc_Fd(struct mpage *, const struct roff_meta *,
 			const struct roff_node *);
 static	void	 parse_mdoc_fname(struct mpage *, const struct roff_node *);
 static	int	 parse_mdoc_Fn(struct mpage *, const struct roff_meta *,
 			const struct roff_node *);
 static	int	 parse_mdoc_Fo(struct mpage *, const struct roff_meta *,
 			const struct roff_node *);
 static	int	 parse_mdoc_Nd(struct mpage *, const struct roff_meta *,
 			const struct roff_node *);
 static	int	 parse_mdoc_Nm(struct mpage *, const struct roff_meta *,
 			const struct roff_node *);
 static	int	 parse_mdoc_Sh(struct mpage *, const struct roff_meta *,
 			const struct roff_node *);
 static	int	 parse_mdoc_Va(struct mpage *, const struct roff_meta *,
 			const struct roff_node *);
 static	int	 parse_mdoc_Xr(struct mpage *, const struct roff_meta *,
 			const struct roff_node *);
 static	void	 putkey(const struct mpage *, char *, uint64_t);
 static	void	 putkeys(const struct mpage *, char *, size_t, uint64_t);
 static	void	 putmdockey(const struct mpage *,
 			const struct roff_node *, uint64_t, int);
 static	int	 render_string(char **, size_t *);
 static	void	 say(const char *, const char *, ...)
 			__attribute__((__format__ (__printf__, 2, 3)));
 static	int	 set_basedir(const char *, int);
 static	int	 treescan(void);
 static	size_t	 utf8(unsigned int, char [7]);
 
 static	int		 nodb; /* no database changes */
 static	int		 mparse_options; /* abort the parse early */
 static	int		 use_all; /* use all found files */
 static	int		 debug; /* print what we're doing */
 static	int		 warnings; /* warn about crap */
 static	int		 write_utf8; /* write UTF-8 output; else ASCII */
 static	int		 exitcode; /* to be returned by main */
 static	enum op		 op; /* operational mode */
 static	char		 basedir[PATH_MAX]; /* current base directory */
 static	struct mpage	*mpage_head; /* list of distinct manual pages */
 static	struct ohash	 mpages; /* table of distinct manual pages */
 static	struct ohash	 mlinks; /* table of directory entries */
 static	struct ohash	 names; /* table of all names */
 static	struct ohash	 strings; /* table of all strings */
 static	uint64_t	 name_mask;
 
 static	const struct mdoc_handler __mdocs[MDOC_MAX - MDOC_Dd] = {
 	{ NULL, 0, NODE_NOPRT },  /* Dd */
 	{ NULL, 0, NODE_NOPRT },  /* Dt */
 	{ NULL, 0, NODE_NOPRT },  /* Os */
 	{ parse_mdoc_Sh, TYPE_Sh, 0 }, /* Sh */
 	{ parse_mdoc_head, TYPE_Ss, 0 }, /* Ss */
 	{ NULL, 0, 0 },  /* Pp */
 	{ NULL, 0, 0 },  /* D1 */
 	{ NULL, 0, 0 },  /* Dl */
 	{ NULL, 0, 0 },  /* Bd */
 	{ NULL, 0, 0 },  /* Ed */
 	{ NULL, 0, 0 },  /* Bl */
 	{ NULL, 0, 0 },  /* El */
 	{ NULL, 0, 0 },  /* It */
 	{ NULL, 0, 0 },  /* Ad */
 	{ NULL, TYPE_An, 0 },  /* An */
 	{ NULL, 0, 0 },  /* Ap */
 	{ NULL, TYPE_Ar, 0 },  /* Ar */
 	{ NULL, TYPE_Cd, 0 },  /* Cd */
 	{ NULL, TYPE_Cm, 0 },  /* Cm */
 	{ NULL, TYPE_Dv, 0 },  /* Dv */
 	{ NULL, TYPE_Er, 0 },  /* Er */
 	{ NULL, TYPE_Ev, 0 },  /* Ev */
 	{ NULL, 0, 0 },  /* Ex */
 	{ NULL, TYPE_Fa, 0 },  /* Fa */
 	{ parse_mdoc_Fd, 0, 0 },  /* Fd */
 	{ NULL, TYPE_Fl, 0 },  /* Fl */
 	{ parse_mdoc_Fn, 0, 0 },  /* Fn */
 	{ NULL, TYPE_Ft, 0 },  /* Ft */
 	{ NULL, TYPE_Ic, 0 },  /* Ic */
 	{ NULL, TYPE_In, 0 },  /* In */
 	{ NULL, TYPE_Li, 0 },  /* Li */
 	{ parse_mdoc_Nd, 0, 0 },  /* Nd */
 	{ parse_mdoc_Nm, 0, 0 },  /* Nm */
 	{ NULL, 0, 0 },  /* Op */
 	{ NULL, 0, 0 },  /* Ot */
 	{ NULL, TYPE_Pa, NODE_NOSRC },  /* Pa */
 	{ NULL, 0, 0 },  /* Rv */
 	{ NULL, TYPE_St, 0 },  /* St */
 	{ parse_mdoc_Va, TYPE_Va, 0 },  /* Va */
 	{ parse_mdoc_Va, TYPE_Vt, 0 },  /* Vt */
 	{ parse_mdoc_Xr, 0, 0 },  /* Xr */
 	{ NULL, 0, 0 },  /* %A */
 	{ NULL, 0, 0 },  /* %B */
 	{ NULL, 0, 0 },  /* %D */
 	{ NULL, 0, 0 },  /* %I */
 	{ NULL, 0, 0 },  /* %J */
 	{ NULL, 0, 0 },  /* %N */
 	{ NULL, 0, 0 },  /* %O */
 	{ NULL, 0, 0 },  /* %P */
 	{ NULL, 0, 0 },  /* %R */
 	{ NULL, 0, 0 },  /* %T */
 	{ NULL, 0, 0 },  /* %V */
 	{ NULL, 0, 0 },  /* Ac */
 	{ NULL, 0, 0 },  /* Ao */
 	{ NULL, 0, 0 },  /* Aq */
 	{ NULL, TYPE_At, 0 },  /* At */
 	{ NULL, 0, 0 },  /* Bc */
 	{ NULL, 0, 0 },  /* Bf */
 	{ NULL, 0, 0 },  /* Bo */
 	{ NULL, 0, 0 },  /* Bq */
 	{ NULL, TYPE_Bsx, NODE_NOSRC },  /* Bsx */
 	{ NULL, TYPE_Bx, NODE_NOSRC },  /* Bx */
 	{ NULL, 0, 0 },  /* Db */
 	{ NULL, 0, 0 },  /* Dc */
 	{ NULL, 0, 0 },  /* Do */
 	{ NULL, 0, 0 },  /* Dq */
 	{ NULL, 0, 0 },  /* Ec */
 	{ NULL, 0, 0 },  /* Ef */
 	{ NULL, TYPE_Em, 0 },  /* Em */
 	{ NULL, 0, 0 },  /* Eo */
 	{ NULL, TYPE_Fx, NODE_NOSRC },  /* Fx */
 	{ NULL, TYPE_Ms, 0 },  /* Ms */
 	{ NULL, 0, 0 },  /* No */
 	{ NULL, 0, 0 },  /* Ns */
 	{ NULL, TYPE_Nx, NODE_NOSRC },  /* Nx */
 	{ NULL, TYPE_Ox, NODE_NOSRC },  /* Ox */
 	{ NULL, 0, 0 },  /* Pc */
 	{ NULL, 0, 0 },  /* Pf */
 	{ NULL, 0, 0 },  /* Po */
 	{ NULL, 0, 0 },  /* Pq */
 	{ NULL, 0, 0 },  /* Qc */
 	{ NULL, 0, 0 },  /* Ql */
 	{ NULL, 0, 0 },  /* Qo */
 	{ NULL, 0, 0 },  /* Qq */
 	{ NULL, 0, 0 },  /* Re */
 	{ NULL, 0, 0 },  /* Rs */
 	{ NULL, 0, 0 },  /* Sc */
 	{ NULL, 0, 0 },  /* So */
 	{ NULL, 0, 0 },  /* Sq */
 	{ NULL, 0, 0 },  /* Sm */
 	{ NULL, 0, 0 },  /* Sx */
 	{ NULL, TYPE_Sy, 0 },  /* Sy */
 	{ NULL, TYPE_Tn, 0 },  /* Tn */
 	{ NULL, 0, NODE_NOSRC },  /* Ux */
 	{ NULL, 0, 0 },  /* Xc */
 	{ NULL, 0, 0 },  /* Xo */
 	{ parse_mdoc_Fo, 0, 0 },  /* Fo */
 	{ NULL, 0, 0 },  /* Fc */
 	{ NULL, 0, 0 },  /* Oo */
 	{ NULL, 0, 0 },  /* Oc */
 	{ NULL, 0, 0 },  /* Bk */
 	{ NULL, 0, 0 },  /* Ek */
 	{ NULL, 0, 0 },  /* Bt */
 	{ NULL, 0, 0 },  /* Hf */
 	{ NULL, 0, 0 },  /* Fr */
 	{ NULL, 0, 0 },  /* Ud */
 	{ NULL, TYPE_Lb, NODE_NOSRC },  /* Lb */
 	{ NULL, 0, 0 },  /* Lp */
 	{ NULL, TYPE_Lk, 0 },  /* Lk */
 	{ NULL, TYPE_Mt, NODE_NOSRC },  /* Mt */
 	{ NULL, 0, 0 },  /* Brq */
 	{ NULL, 0, 0 },  /* Bro */
 	{ NULL, 0, 0 },  /* Brc */
 	{ NULL, 0, 0 },  /* %C */
 	{ NULL, 0, 0 },  /* Es */
 	{ NULL, 0, 0 },  /* En */
 	{ NULL, TYPE_Dx, NODE_NOSRC },  /* Dx */
 	{ NULL, 0, 0 },  /* %Q */
 	{ NULL, 0, 0 },  /* %U */
 	{ NULL, 0, 0 },  /* Ta */
 };
 static	const struct mdoc_handler *const mdocs = __mdocs - MDOC_Dd;
 
 
 int
 mandocdb(int argc, char *argv[])
 {
 	struct manconf	  conf;
 	struct mparse	 *mp;
 	struct dba	 *dba;
 	const char	 *path_arg, *progname;
 	size_t		  j, sz;
 	int		  ch, i;
 
 #if HAVE_PLEDGE
 	if (pledge("stdio rpath wpath cpath fattr flock proc exec", NULL) == -1) {
 		warn("pledge");
 		return (int)MANDOCLEVEL_SYSERR;
 	}
 #endif
 
 #if HAVE_SANDBOX_INIT
 	if (sandbox_init(kSBXProfileNoInternet, SANDBOX_NAMED, NULL) == -1) {
 		warnx("sandbox_init");
 		return (int)MANDOCLEVEL_SYSERR;
 	}
 #endif
 
 	memset(&conf, 0, sizeof(conf));
 
 	/*
 	 * We accept a few different invocations.
 	 * The CHECKOP macro makes sure that invocation styles don't
 	 * clobber each other.
 	 */
 #define	CHECKOP(_op, _ch) do \
 	if (OP_DEFAULT != (_op)) { \
 		warnx("-%c: Conflicting option", (_ch)); \
 		goto usage; \
 	} while (/*CONSTCOND*/0)
 
 	path_arg = NULL;
 	op = OP_DEFAULT;
 
 	while (-1 != (ch = getopt(argc, argv, "aC:Dd:npQT:tu:v")))
 		switch (ch) {
 		case 'a':
 			use_all = 1;
 			break;
 		case 'C':
 			CHECKOP(op, ch);
 			path_arg = optarg;
 			op = OP_CONFFILE;
 			break;
 		case 'D':
 			debug++;
 			break;
 		case 'd':
 			CHECKOP(op, ch);
 			path_arg = optarg;
 			op = OP_UPDATE;
 			break;
 		case 'n':
 			nodb = 1;
 			break;
 		case 'p':
 			warnings = 1;
 			break;
 		case 'Q':
 			mparse_options |= MPARSE_QUICK;
 			break;
 		case 'T':
 			if (strcmp(optarg, "utf8")) {
 				warnx("-T%s: Unsupported output format",
 				    optarg);
 				goto usage;
 			}
 			write_utf8 = 1;
 			break;
 		case 't':
 			CHECKOP(op, ch);
 			dup2(STDOUT_FILENO, STDERR_FILENO);
 			op = OP_TEST;
 			nodb = warnings = 1;
 			break;
 		case 'u':
 			CHECKOP(op, ch);
 			path_arg = optarg;
 			op = OP_DELETE;
 			break;
 		case 'v':
 			/* Compatibility with espie@'s makewhatis. */
 			break;
 		default:
 			goto usage;
 		}
 
 	argc -= optind;
 	argv += optind;
 
 #if HAVE_PLEDGE
 	if (nodb) {
 		if (pledge("stdio rpath", NULL) == -1) {
 			warn("pledge");
 			return (int)MANDOCLEVEL_SYSERR;
 		}
 	}
 #endif
 
 	if (OP_CONFFILE == op && argc > 0) {
 		warnx("-C: Too many arguments");
 		goto usage;
 	}
 
 	exitcode = (int)MANDOCLEVEL_OK;
 	mchars_alloc();
-	mp = mparse_alloc(mparse_options, MANDOCLEVEL_BADARG, NULL, NULL);
+	mp = mparse_alloc(mparse_options, MANDOCERR_MAX, NULL,
+	    MANDOC_OS_OTHER, NULL);
 	mandoc_ohash_init(&mpages, 6, offsetof(struct mpage, inodev));
 	mandoc_ohash_init(&mlinks, 6, offsetof(struct mlink, file));
 
 	if (OP_UPDATE == op || OP_DELETE == op || OP_TEST == op) {
 
 		/*
 		 * Most of these deal with a specific directory.
 		 * Jump into that directory first.
 		 */
 		if (OP_TEST != op && 0 == set_basedir(path_arg, 1))
 			goto out;
 
 		dba = nodb ? dba_new(128) : dba_read(MANDOC_DB);
 		if (dba != NULL) {
 			/*
 			 * The existing database is usable.  Process
 			 * all files specified on the command-line.
 			 */
 #if HAVE_PLEDGE
 			if (!nodb) {
 				if (pledge("stdio rpath wpath cpath fattr flock", NULL) == -1) {
 					warn("pledge");
 					exitcode = (int)MANDOCLEVEL_SYSERR;
 					goto out;
 				}
 			}
 #endif
 			use_all = 1;
 			for (i = 0; i < argc; i++)
 				filescan(argv[i]);
 			if (nodb == 0)
 				dbprune(dba);
 		} else {
 			/* Database missing or corrupt. */
 			if (op != OP_UPDATE || errno != ENOENT)
 				say(MANDOC_DB, "%s: Automatically recreating"
 				    " from scratch", strerror(errno));
 			exitcode = (int)MANDOCLEVEL_OK;
 			op = OP_DEFAULT;
 			if (0 == treescan())
 				goto out;
 			dba = dba_new(128);
 		}
 		if (OP_DELETE != op)
 			mpages_merge(dba, mp);
 		if (nodb == 0)
 			dbwrite(dba);
 		dba_free(dba);
 	} else {
 		/*
 		 * If we have arguments, use them as our manpaths.
 		 * If we don't, use man.conf(5).
 		 */
 		if (argc > 0) {
 			conf.manpath.paths = mandoc_reallocarray(NULL,
 			    argc, sizeof(char *));
 			conf.manpath.sz = (size_t)argc;
 			for (i = 0; i < argc; i++)
 				conf.manpath.paths[i] = mandoc_strdup(argv[i]);
 		} else
 			manconf_parse(&conf, path_arg, NULL, NULL);
 
 		if (conf.manpath.sz == 0) {
 			exitcode = (int)MANDOCLEVEL_BADARG;
 			say("", "Empty manpath");
 		}
 
 		/*
 		 * First scan the tree rooted at a base directory, then
 		 * build a new database and finally move it into place.
 		 * Ignore zero-length directories and strip trailing
 		 * slashes.
 		 */
 		for (j = 0; j < conf.manpath.sz; j++) {
 			sz = strlen(conf.manpath.paths[j]);
 			if (sz && conf.manpath.paths[j][sz - 1] == '/')
 				conf.manpath.paths[j][--sz] = '\0';
 			if (0 == sz)
 				continue;
 
 			if (j) {
 				mandoc_ohash_init(&mpages, 6,
 				    offsetof(struct mpage, inodev));
 				mandoc_ohash_init(&mlinks, 6,
 				    offsetof(struct mlink, file));
 			}
 
 			if ( ! set_basedir(conf.manpath.paths[j], argc > 0))
 				continue;
 			if (0 == treescan())
 				continue;
 			dba = dba_new(128);
 			mpages_merge(dba, mp);
 			if (nodb == 0)
 				dbwrite(dba);
 			dba_free(dba);
 
 			if (j + 1 < conf.manpath.sz) {
 				mpages_free();
 				ohash_delete(&mpages);
 				ohash_delete(&mlinks);
 			}
 		}
 	}
 out:
 	manconf_free(&conf);
 	mparse_free(mp);
 	mchars_free();
 	mpages_free();
 	ohash_delete(&mpages);
 	ohash_delete(&mlinks);
 	return exitcode;
 usage:
 	progname = getprogname();
 	fprintf(stderr, "usage: %s [-aDnpQ] [-C file] [-Tutf8]\n"
 			"       %s [-aDnpQ] [-Tutf8] dir ...\n"
 			"       %s [-DnpQ] [-Tutf8] -d dir [file ...]\n"
 			"       %s [-Dnp] -u dir [file ...]\n"
 			"       %s [-Q] -t file ...\n",
 		        progname, progname, progname, progname, progname);
 
 	return (int)MANDOCLEVEL_BADARG;
 }
 
 /*
  * To get a singly linked list in alpha order while inserting entries
  * at the beginning, process directory entries in reverse alpha order.
  */
 static int
 #if HAVE_FTS_COMPARE_CONST
 fts_compare(const FTSENT *const *a, const FTSENT *const *b)
 #else
 fts_compare(const FTSENT **a, const FTSENT **b)
 #endif
 {
 	return -strcmp((*a)->fts_name, (*b)->fts_name);
 }
 
 /*
  * Scan a directory tree rooted at "basedir" for manpages.
  * We use fts(), scanning directory parts along the way for clues to our
  * section and architecture.
  *
  * If use_all has been specified, grok all files.
  * If not, sanitise paths to the following:
  *
  *   [./]man*[/]/.
* or * [./]cat
[/]/.0 * * TODO: accommodate for multi-language directories. */ static int treescan(void) { char buf[PATH_MAX]; FTS *f; FTSENT *ff; struct mlink *mlink; int gzip; enum form dform; char *dsec, *arch, *fsec, *cp; const char *path; const char *argv[2]; argv[0] = "."; argv[1] = NULL; f = fts_open((char * const *)argv, FTS_PHYSICAL | FTS_NOCHDIR, fts_compare); if (f == NULL) { exitcode = (int)MANDOCLEVEL_SYSERR; say("", "&fts_open"); return 0; } dsec = arch = NULL; dform = FORM_NONE; while ((ff = fts_read(f)) != NULL) { path = ff->fts_path + 2; switch (ff->fts_info) { /* * Symbolic links require various sanity checks, * then get handled just like regular files. */ case FTS_SL: if (realpath(path, buf) == NULL) { if (warnings) say(path, "&realpath"); continue; } if (strstr(buf, basedir) != buf #ifdef HOMEBREWDIR && strstr(buf, HOMEBREWDIR) != buf #endif ) { if (warnings) say("", "%s: outside base directory", buf); continue; } /* Use logical inode to avoid mpages dupe. */ if (stat(path, ff->fts_statp) == -1) { if (warnings) say(path, "&stat"); continue; } /* FALLTHROUGH */ /* * If we're a regular file, add an mlink by using the * stored directory data and handling the filename. */ case FTS_F: if ( ! strcmp(path, MANDOC_DB)) continue; if ( ! use_all && ff->fts_level < 2) { if (warnings) say(path, "Extraneous file"); continue; } gzip = 0; fsec = NULL; while (fsec == NULL) { fsec = strrchr(ff->fts_name, '.'); if (fsec == NULL || strcmp(fsec+1, "gz")) break; gzip = 1; *fsec = '\0'; fsec = NULL; } if (fsec == NULL) { if ( ! use_all) { if (warnings) say(path, "No filename suffix"); continue; } } else if ( ! strcmp(++fsec, "html")) { if (warnings) say(path, "Skip html"); continue; } else if ( ! strcmp(fsec, "ps")) { if (warnings) say(path, "Skip ps"); continue; } else if ( ! strcmp(fsec, "pdf")) { if (warnings) say(path, "Skip pdf"); continue; } else if ( ! use_all && ((dform == FORM_SRC && strncmp(fsec, dsec, strlen(dsec))) || (dform == FORM_CAT && strcmp(fsec, "0")))) { if (warnings) say(path, "Wrong filename suffix"); continue; } else fsec[-1] = '\0'; mlink = mandoc_calloc(1, sizeof(struct mlink)); if (strlcpy(mlink->file, path, sizeof(mlink->file)) >= sizeof(mlink->file)) { say(path, "Filename too long"); free(mlink); continue; } mlink->dform = dform; mlink->dsec = dsec; mlink->arch = arch; mlink->name = ff->fts_name; mlink->fsec = fsec; mlink->gzip = gzip; mlink_add(mlink, ff->fts_statp); continue; case FTS_D: case FTS_DP: break; default: if (warnings) say(path, "Not a regular file"); continue; } switch (ff->fts_level) { case 0: /* Ignore the root directory. */ break; case 1: /* * This might contain manX/ or catX/. * Try to infer this from the name. * If we're not in use_all, enforce it. */ cp = ff->fts_name; if (ff->fts_info == FTS_DP) { dform = FORM_NONE; dsec = NULL; break; } if ( ! strncmp(cp, "man", 3)) { dform = FORM_SRC; dsec = cp + 3; } else if ( ! strncmp(cp, "cat", 3)) { dform = FORM_CAT; dsec = cp + 3; } else { dform = FORM_NONE; dsec = NULL; } if (dsec != NULL || use_all) break; if (warnings) say(path, "Unknown directory part"); fts_set(f, ff, FTS_SKIP); break; case 2: /* * Possibly our architecture. * If we're descending, keep tabs on it. */ if (ff->fts_info != FTS_DP && dsec != NULL) arch = ff->fts_name; else arch = NULL; break; default: if (ff->fts_info == FTS_DP || use_all) break; if (warnings) say(path, "Extraneous directory part"); fts_set(f, ff, FTS_SKIP); break; } } fts_close(f); return 1; } /* * Add a file to the mlinks table. * Do not verify that it's a "valid" looking manpage (we'll do that * later). * * Try to infer the manual section, architecture, and page name from the * path, assuming it looks like * * [./]man*[/]/.
* or * [./]cat
[/]/.0 * * See treescan() for the fts(3) version of this. */ static void filescan(const char *file) { char buf[PATH_MAX]; struct stat st; struct mlink *mlink; char *p, *start; assert(use_all); if (0 == strncmp(file, "./", 2)) file += 2; /* * We have to do lstat(2) before realpath(3) loses * the information whether this is a symbolic link. * We need to know that because for symbolic links, * we want to use the orginal file name, while for * regular files, we want to use the real path. */ if (-1 == lstat(file, &st)) { exitcode = (int)MANDOCLEVEL_BADARG; say(file, "&lstat"); return; } else if (0 == ((S_IFREG | S_IFLNK) & st.st_mode)) { exitcode = (int)MANDOCLEVEL_BADARG; say(file, "Not a regular file"); return; } /* * We have to resolve the file name to the real path * in any case for the base directory check. */ if (NULL == realpath(file, buf)) { exitcode = (int)MANDOCLEVEL_BADARG; say(file, "&realpath"); return; } if (OP_TEST == op) start = buf; else if (strstr(buf, basedir) == buf) start = buf + strlen(basedir); #ifdef HOMEBREWDIR else if (strstr(buf, HOMEBREWDIR) == buf) start = buf; #endif else { exitcode = (int)MANDOCLEVEL_BADARG; say("", "%s: outside base directory", buf); return; } /* * Now we are sure the file is inside our tree. * If it is a symbolic link, ignore the real path * and use the original name. * This implies passing stuff like "cat1/../man1/foo.1" * on the command line won't work. So don't do that. * Note the stat(2) can still fail if the link target * doesn't exist. */ if (S_IFLNK & st.st_mode) { if (-1 == stat(buf, &st)) { exitcode = (int)MANDOCLEVEL_BADARG; say(file, "&stat"); return; } if (strlcpy(buf, file, sizeof(buf)) >= sizeof(buf)) { say(file, "Filename too long"); return; } start = buf; if (OP_TEST != op && strstr(buf, basedir) == buf) start += strlen(basedir); } mlink = mandoc_calloc(1, sizeof(struct mlink)); mlink->dform = FORM_NONE; if (strlcpy(mlink->file, start, sizeof(mlink->file)) >= sizeof(mlink->file)) { say(start, "Filename too long"); free(mlink); return; } /* * In test mode or when the original name is absolute * but outside our tree, guess the base directory. */ if (op == OP_TEST || (start == buf && *start == '/')) { if (strncmp(buf, "man/", 4) == 0) start = buf + 4; else if ((start = strstr(buf, "/man/")) != NULL) start += 5; else start = buf; } /* * First try to guess our directory structure. * If we find a separator, try to look for man* or cat*. * If we find one of these and what's underneath is a directory, * assume it's an architecture. */ if (NULL != (p = strchr(start, '/'))) { *p++ = '\0'; if (0 == strncmp(start, "man", 3)) { mlink->dform = FORM_SRC; mlink->dsec = start + 3; } else if (0 == strncmp(start, "cat", 3)) { mlink->dform = FORM_CAT; mlink->dsec = start + 3; } start = p; if (NULL != mlink->dsec && NULL != (p = strchr(start, '/'))) { *p++ = '\0'; mlink->arch = start; start = p; } } /* * Now check the file suffix. * Suffix of `.0' indicates a catpage, `.1-9' is a manpage. */ p = strrchr(start, '\0'); while (p-- > start && '/' != *p && '.' != *p) /* Loop. */ ; if ('.' == *p) { *p++ = '\0'; mlink->fsec = p; } /* * Now try to parse the name. * Use the filename portion of the path. */ mlink->name = start; if (NULL != (p = strrchr(start, '/'))) { mlink->name = p + 1; *p = '\0'; } mlink_add(mlink, &st); } static void mlink_add(struct mlink *mlink, const struct stat *st) { struct inodev inodev; struct mpage *mpage; unsigned int slot; assert(NULL != mlink->file); mlink->dsec = mandoc_strdup(mlink->dsec ? mlink->dsec : ""); mlink->arch = mandoc_strdup(mlink->arch ? mlink->arch : ""); mlink->name = mandoc_strdup(mlink->name ? mlink->name : ""); mlink->fsec = mandoc_strdup(mlink->fsec ? mlink->fsec : ""); if ('0' == *mlink->fsec) { free(mlink->fsec); mlink->fsec = mandoc_strdup(mlink->dsec); mlink->fform = FORM_CAT; } else if ('1' <= *mlink->fsec && '9' >= *mlink->fsec) mlink->fform = FORM_SRC; else mlink->fform = FORM_NONE; slot = ohash_qlookup(&mlinks, mlink->file); assert(NULL == ohash_find(&mlinks, slot)); ohash_insert(&mlinks, slot, mlink); memset(&inodev, 0, sizeof(inodev)); /* Clear padding. */ inodev.st_ino = st->st_ino; inodev.st_dev = st->st_dev; slot = ohash_lookup_memory(&mpages, (char *)&inodev, sizeof(struct inodev), inodev.st_ino); mpage = ohash_find(&mpages, slot); if (NULL == mpage) { mpage = mandoc_calloc(1, sizeof(struct mpage)); mpage->inodev.st_ino = inodev.st_ino; mpage->inodev.st_dev = inodev.st_dev; mpage->form = FORM_NONE; mpage->next = mpage_head; mpage_head = mpage; ohash_insert(&mpages, slot, mpage); } else mlink->next = mpage->mlinks; mpage->mlinks = mlink; mlink->mpage = mpage; } static void mlink_free(struct mlink *mlink) { free(mlink->dsec); free(mlink->arch); free(mlink->name); free(mlink->fsec); free(mlink); } static void mpages_free(void) { struct mpage *mpage; struct mlink *mlink; while ((mpage = mpage_head) != NULL) { while ((mlink = mpage->mlinks) != NULL) { mpage->mlinks = mlink->next; mlink_free(mlink); } mpage_head = mpage->next; free(mpage->sec); free(mpage->arch); free(mpage->title); free(mpage->desc); free(mpage); } } /* * For each mlink to the mpage, check whether the path looks like * it is formatted, and if it does, check whether a source manual * exists by the same name, ignoring the suffix. * If both conditions hold, drop the mlink. */ static void mlinks_undupe(struct mpage *mpage) { char buf[PATH_MAX]; struct mlink **prev; struct mlink *mlink; char *bufp; mpage->form = FORM_CAT; prev = &mpage->mlinks; while (NULL != (mlink = *prev)) { if (FORM_CAT != mlink->dform) { mpage->form = FORM_NONE; goto nextlink; } (void)strlcpy(buf, mlink->file, sizeof(buf)); bufp = strstr(buf, "cat"); assert(NULL != bufp); memcpy(bufp, "man", 3); if (NULL != (bufp = strrchr(buf, '.'))) *++bufp = '\0'; (void)strlcat(buf, mlink->dsec, sizeof(buf)); if (NULL == ohash_find(&mlinks, ohash_qlookup(&mlinks, buf))) goto nextlink; if (warnings) say(mlink->file, "Man source exists: %s", buf); if (use_all) goto nextlink; *prev = mlink->next; mlink_free(mlink); continue; nextlink: prev = &(*prev)->next; } } static void mlink_check(struct mpage *mpage, struct mlink *mlink) { struct str *str; unsigned int slot; /* * Check whether the manual section given in a file * agrees with the directory where the file is located. * Some manuals have suffixes like (3p) on their * section number either inside the file or in the * directory name, some are linked into more than one * section, like encrypt(1) = makekey(8). */ if (FORM_SRC == mpage->form && strcasecmp(mpage->sec, mlink->dsec)) say(mlink->file, "Section \"%s\" manual in %s directory", mpage->sec, mlink->dsec); /* * Manual page directories exist for each kernel * architecture as returned by machine(1). * However, many manuals only depend on the * application architecture as returned by arch(1). * For example, some (2/ARM) manuals are shared * across the "armish" and "zaurus" kernel * architectures. * A few manuals are even shared across completely * different architectures, for example fdformat(1) * on amd64, i386, and sparc64. */ if (strcasecmp(mpage->arch, mlink->arch)) say(mlink->file, "Architecture \"%s\" manual in " "\"%s\" directory", mpage->arch, mlink->arch); /* * XXX * parse_cat() doesn't set NAME_TITLE yet. */ if (FORM_CAT == mpage->form) return; /* * Check whether this mlink * appears as a name in the NAME section. */ slot = ohash_qlookup(&names, mlink->name); str = ohash_find(&names, slot); assert(NULL != str); if ( ! (NAME_TITLE & str->mask)) say(mlink->file, "Name missing in NAME section"); } /* * Run through the files in the global vector "mpages" * and add them to the database specified in "basedir". * * This handles the parsing scheme itself, using the cues of directory * and filename to determine whether the file is parsable or not. */ static void mpages_merge(struct dba *dba, struct mparse *mp) { struct mpage *mpage, *mpage_dest; struct mlink *mlink, *mlink_dest; struct roff_man *man; char *sodest; char *cp; int fd; for (mpage = mpage_head; mpage != NULL; mpage = mpage->next) { mlinks_undupe(mpage); if ((mlink = mpage->mlinks) == NULL) continue; name_mask = NAME_MASK; mandoc_ohash_init(&names, 4, offsetof(struct str, key)); mandoc_ohash_init(&strings, 6, offsetof(struct str, key)); mparse_reset(mp); man = NULL; sodest = NULL; if ((fd = mparse_open(mp, mlink->file)) == -1) { say(mlink->file, "&open"); goto nextpage; } /* * Interpret the file as mdoc(7) or man(7) source * code, unless it is known to be formatted. */ if (mlink->dform != FORM_CAT || mlink->fform != FORM_CAT) { mparse_readfd(mp, fd, mlink->file); close(fd); fd = -1; mparse_result(mp, &man, &sodest); } if (sodest != NULL) { mlink_dest = ohash_find(&mlinks, ohash_qlookup(&mlinks, sodest)); if (mlink_dest == NULL) { mandoc_asprintf(&cp, "%s.gz", sodest); mlink_dest = ohash_find(&mlinks, ohash_qlookup(&mlinks, cp)); free(cp); } if (mlink_dest != NULL) { /* The .so target exists. */ mpage_dest = mlink_dest->mpage; while (1) { mlink->mpage = mpage_dest; /* * If the target was already * processed, add the links * to the database now. * Otherwise, this will * happen when we come * to the target. */ if (mpage_dest->dba != NULL) dbadd_mlink(mlink); if (mlink->next == NULL) break; mlink = mlink->next; } /* Move all links to the target. */ mlink->next = mlink_dest->next; mlink_dest->next = mpage->mlinks; mpage->mlinks = NULL; } goto nextpage; } else if (man != NULL && man->macroset == MACROSET_MDOC) { mdoc_validate(man); mpage->form = FORM_SRC; mpage->sec = man->meta.msec; mpage->sec = mandoc_strdup( mpage->sec == NULL ? "" : mpage->sec); mpage->arch = man->meta.arch; mpage->arch = mandoc_strdup( mpage->arch == NULL ? "" : mpage->arch); mpage->title = mandoc_strdup(man->meta.title); } else if (man != NULL && man->macroset == MACROSET_MAN) { man_validate(man); if (*man->meta.msec != '\0' || *man->meta.title != '\0') { mpage->form = FORM_SRC; mpage->sec = mandoc_strdup(man->meta.msec); mpage->arch = mandoc_strdup(mlink->arch); mpage->title = mandoc_strdup(man->meta.title); } else man = NULL; } assert(mpage->desc == NULL); if (man == NULL) { mpage->form = FORM_CAT; mpage->sec = mandoc_strdup(mlink->dsec); mpage->arch = mandoc_strdup(mlink->arch); mpage->title = mandoc_strdup(mlink->name); parse_cat(mpage, fd); } else if (man->macroset == MACROSET_MDOC) parse_mdoc(mpage, &man->meta, man->first); else parse_man(mpage, &man->meta, man->first); if (mpage->desc == NULL) { mpage->desc = mandoc_strdup(mlink->name); if (warnings) say(mlink->file, "No one-line description, " "using filename \"%s\"", mlink->name); } for (mlink = mpage->mlinks; mlink != NULL; mlink = mlink->next) { putkey(mpage, mlink->name, NAME_FILE); if (warnings && !use_all) mlink_check(mpage, mlink); } dbadd(dba, mpage); nextpage: ohash_delete(&strings); ohash_delete(&names); } } static void parse_cat(struct mpage *mpage, int fd) { FILE *stream; struct mlink *mlink; char *line, *p, *title, *sec; size_t linesz, plen, titlesz; ssize_t len; int offs; mlink = mpage->mlinks; stream = fd == -1 ? fopen(mlink->file, "r") : fdopen(fd, "r"); if (stream == NULL) { if (fd != -1) close(fd); if (warnings) say(mlink->file, "&fopen"); return; } line = NULL; linesz = 0; /* Parse the section number from the header line. */ while (getline(&line, &linesz, stream) != -1) { if (*line == '\n') continue; if ((sec = strchr(line, '(')) == NULL) break; if ((p = strchr(++sec, ')')) == NULL) break; free(mpage->sec); mpage->sec = mandoc_strndup(sec, p - sec); if (warnings && *mlink->dsec != '\0' && strcasecmp(mpage->sec, mlink->dsec)) say(mlink->file, "Section \"%s\" manual in %s directory", mpage->sec, mlink->dsec); break; } /* Skip to first blank line. */ while (line == NULL || *line != '\n') if (getline(&line, &linesz, stream) == -1) break; /* * Assume the first line that is not indented * is the first section header. Skip to it. */ while (getline(&line, &linesz, stream) != -1) if (*line != '\n' && *line != ' ') break; /* * Read up until the next section into a buffer. * Strip the leading and trailing newline from each read line, * appending a trailing space. * Ignore empty (whitespace-only) lines. */ titlesz = 0; title = NULL; while ((len = getline(&line, &linesz, stream)) != -1) { if (*line != ' ') break; offs = 0; while (isspace((unsigned char)line[offs])) offs++; if (line[offs] == '\0') continue; title = mandoc_realloc(title, titlesz + len - offs); memcpy(title + titlesz, line + offs, len - offs); titlesz += len - offs; title[titlesz - 1] = ' '; } free(line); /* * If no page content can be found, or the input line * is already the next section header, or there is no * trailing newline, reuse the page title as the page * description. */ if (NULL == title || '\0' == *title) { if (warnings) say(mlink->file, "Cannot find NAME section"); fclose(stream); free(title); return; } title[titlesz - 1] = '\0'; /* * Skip to the first dash. * Use the remaining line as the description (no more than 70 * bytes). */ if (NULL != (p = strstr(title, "- "))) { for (p += 2; ' ' == *p || '\b' == *p; p++) /* Skip to next word. */ ; } else { if (warnings) say(mlink->file, "No dash in title line, " "reusing \"%s\" as one-line description", title); p = title; } plen = strlen(p); /* Strip backspace-encoding from line. */ while (NULL != (line = memchr(p, '\b', plen))) { len = line - p; if (0 == len) { memmove(line, line + 1, plen--); continue; } memmove(line - 1, line + 1, plen - len); plen -= 2; } mpage->desc = mandoc_strdup(p); fclose(stream); free(title); } /* * Put a type/word pair into the word database for this particular file. */ static void putkey(const struct mpage *mpage, char *value, uint64_t type) { putkeys(mpage, value, strlen(value), type); } /* * Grok all nodes at or below a certain mdoc node into putkey(). */ static void putmdockey(const struct mpage *mpage, const struct roff_node *n, uint64_t m, int taboo) { for ( ; NULL != n; n = n->next) { if (n->flags & taboo) continue; if (NULL != n->child) putmdockey(mpage, n->child, m, taboo); if (n->type == ROFFT_TEXT) putkey(mpage, n->string, m); } } static void parse_man(struct mpage *mpage, const struct roff_meta *meta, const struct roff_node *n) { const struct roff_node *head, *body; char *start, *title; char byte; size_t sz; if (n == NULL) return; /* * We're only searching for one thing: the first text child in * the BODY of a NAME section. Since we don't keep track of * sections in -man, run some hoops to find out whether we're in * the correct section or not. */ if (n->type == ROFFT_BODY && n->tok == MAN_SH) { body = n; if ((head = body->parent->head) != NULL && (head = head->child) != NULL && head->next == NULL && head->type == ROFFT_TEXT && strcmp(head->string, "NAME") == 0 && body->child != NULL) { /* * Suck the entire NAME section into memory. * Yes, we might run away. * But too many manuals have big, spread-out * NAME sections over many lines. */ title = NULL; deroff(&title, body); if (NULL == title) return; /* * Go through a special heuristic dance here. * Conventionally, one or more manual names are * comma-specified prior to a whitespace, then a * dash, then a description. Try to puzzle out * the name parts here. */ start = title; for ( ;; ) { sz = strcspn(start, " ,"); if ('\0' == start[sz]) break; byte = start[sz]; start[sz] = '\0'; /* * Assume a stray trailing comma in the * name list if a name begins with a dash. */ if ('-' == start[0] || ('\\' == start[0] && '-' == start[1])) break; putkey(mpage, start, NAME_TITLE); if ( ! (mpage->name_head_done || strcasecmp(start, meta->title))) { putkey(mpage, start, NAME_HEAD); mpage->name_head_done = 1; } if (' ' == byte) { start += sz + 1; break; } assert(',' == byte); start += sz + 1; while (' ' == *start) start++; } if (start == title) { putkey(mpage, start, NAME_TITLE); if ( ! (mpage->name_head_done || strcasecmp(start, meta->title))) { putkey(mpage, start, NAME_HEAD); mpage->name_head_done = 1; } free(title); return; } while (isspace((unsigned char)*start)) start++; if (0 == strncmp(start, "-", 1)) start += 1; else if (0 == strncmp(start, "\\-\\-", 4)) start += 4; else if (0 == strncmp(start, "\\-", 2)) start += 2; else if (0 == strncmp(start, "\\(en", 4)) start += 4; else if (0 == strncmp(start, "\\(em", 4)) start += 4; while (' ' == *start) start++; mpage->desc = mandoc_strdup(start); free(title); return; } } for (n = n->child; n; n = n->next) { if (NULL != mpage->desc) break; parse_man(mpage, meta, n); } } static void parse_mdoc(struct mpage *mpage, const struct roff_meta *meta, const struct roff_node *n) { for (n = n->child; n != NULL; n = n->next) { if (n->tok == TOKEN_NONE || n->tok < ROFF_MAX || n->flags & mdocs[n->tok].taboo) continue; assert(n->tok >= MDOC_Dd && n->tok < MDOC_MAX); switch (n->type) { case ROFFT_ELEM: case ROFFT_BLOCK: case ROFFT_HEAD: case ROFFT_BODY: case ROFFT_TAIL: if (mdocs[n->tok].fp != NULL && (*mdocs[n->tok].fp)(mpage, meta, n) == 0) break; if (mdocs[n->tok].mask) putmdockey(mpage, n->child, mdocs[n->tok].mask, mdocs[n->tok].taboo); break; default: continue; } if (NULL != n->child) parse_mdoc(mpage, meta, n); } } static int parse_mdoc_Fd(struct mpage *mpage, const struct roff_meta *meta, const struct roff_node *n) { char *start, *end; size_t sz; if (SEC_SYNOPSIS != n->sec || NULL == (n = n->child) || n->type != ROFFT_TEXT) return 0; /* * Only consider those `Fd' macro fields that begin with an * "inclusion" token (versus, e.g., #define). */ if (strcmp("#include", n->string)) return 0; if ((n = n->next) == NULL || n->type != ROFFT_TEXT) return 0; /* * Strip away the enclosing angle brackets and make sure we're * not zero-length. */ start = n->string; if ('<' == *start || '"' == *start) start++; if (0 == (sz = strlen(start))) return 0; end = &start[(int)sz - 1]; if ('>' == *end || '"' == *end) end--; if (end > start) putkeys(mpage, start, end - start + 1, TYPE_In); return 0; } static void parse_mdoc_fname(struct mpage *mpage, const struct roff_node *n) { char *cp; size_t sz; if (n->type != ROFFT_TEXT) return; /* Skip function pointer punctuation. */ cp = n->string; while (*cp == '(' || *cp == '*') cp++; sz = strcspn(cp, "()"); putkeys(mpage, cp, sz, TYPE_Fn); if (n->sec == SEC_SYNOPSIS) putkeys(mpage, cp, sz, NAME_SYN); } static int parse_mdoc_Fn(struct mpage *mpage, const struct roff_meta *meta, const struct roff_node *n) { if (n->child == NULL) return 0; parse_mdoc_fname(mpage, n->child); for (n = n->child->next; n != NULL; n = n->next) if (n->type == ROFFT_TEXT) putkey(mpage, n->string, TYPE_Fa); return 0; } static int parse_mdoc_Fo(struct mpage *mpage, const struct roff_meta *meta, const struct roff_node *n) { if (n->type != ROFFT_HEAD) return 1; if (n->child != NULL) parse_mdoc_fname(mpage, n->child); return 0; } static int parse_mdoc_Va(struct mpage *mpage, const struct roff_meta *meta, const struct roff_node *n) { char *cp; if (n->type != ROFFT_ELEM && n->type != ROFFT_BODY) return 0; if (n->child != NULL && n->child->next == NULL && n->child->type == ROFFT_TEXT) return 1; cp = NULL; deroff(&cp, n); if (cp != NULL) { putkey(mpage, cp, TYPE_Vt | (n->tok == MDOC_Va || n->type == ROFFT_BODY ? TYPE_Va : 0)); free(cp); } return 0; } static int parse_mdoc_Xr(struct mpage *mpage, const struct roff_meta *meta, const struct roff_node *n) { char *cp; if (NULL == (n = n->child)) return 0; if (NULL == n->next) { putkey(mpage, n->string, TYPE_Xr); return 0; } mandoc_asprintf(&cp, "%s(%s)", n->string, n->next->string); putkey(mpage, cp, TYPE_Xr); free(cp); return 0; } static int parse_mdoc_Nd(struct mpage *mpage, const struct roff_meta *meta, const struct roff_node *n) { if (n->type == ROFFT_BODY) deroff(&mpage->desc, n); return 0; } static int parse_mdoc_Nm(struct mpage *mpage, const struct roff_meta *meta, const struct roff_node *n) { if (SEC_NAME == n->sec) putmdockey(mpage, n->child, NAME_TITLE, 0); else if (n->sec == SEC_SYNOPSIS && n->type == ROFFT_HEAD) { if (n->child == NULL) putkey(mpage, meta->name, NAME_SYN); else putmdockey(mpage, n->child, NAME_SYN, 0); } if ( ! (mpage->name_head_done || n->child == NULL || n->child->string == NULL || strcasecmp(n->child->string, meta->title))) { putkey(mpage, n->child->string, NAME_HEAD); mpage->name_head_done = 1; } return 0; } static int parse_mdoc_Sh(struct mpage *mpage, const struct roff_meta *meta, const struct roff_node *n) { return n->sec == SEC_CUSTOM && n->type == ROFFT_HEAD; } static int parse_mdoc_head(struct mpage *mpage, const struct roff_meta *meta, const struct roff_node *n) { return n->type == ROFFT_HEAD; } /* * Add a string to the hash table for the current manual. * Each string has a bitmask telling which macros it belongs to. * When we finish the manual, we'll dump the table. */ static void putkeys(const struct mpage *mpage, char *cp, size_t sz, uint64_t v) { struct ohash *htab; struct str *s; const char *end; unsigned int slot; int i, mustfree; if (0 == sz) return; mustfree = render_string(&cp, &sz); if (TYPE_Nm & v) { htab = &names; v &= name_mask; if (v & NAME_FIRST) name_mask &= ~NAME_FIRST; if (debug > 1) say(mpage->mlinks->file, "Adding name %*s, bits=0x%llx", (int)sz, cp, (unsigned long long)v); } else { htab = &strings; if (debug > 1) for (i = 0; i < KEY_MAX; i++) if ((uint64_t)1 << i & v) say(mpage->mlinks->file, "Adding key %s=%*s", mansearch_keynames[i], (int)sz, cp); } end = cp + sz; slot = ohash_qlookupi(htab, cp, &end); s = ohash_find(htab, slot); if (NULL != s && mpage == s->mpage) { s->mask |= v; return; } else if (NULL == s) { s = mandoc_calloc(1, sizeof(struct str) + sz + 1); memcpy(s->key, cp, sz); ohash_insert(htab, slot, s); } s->mpage = mpage; s->mask = v; if (mustfree) free(cp); } /* * Take a Unicode codepoint and produce its UTF-8 encoding. * This isn't the best way to do this, but it works. * The magic numbers are from the UTF-8 packaging. * They're not as scary as they seem: read the UTF-8 spec for details. */ static size_t utf8(unsigned int cp, char out[7]) { size_t rc; rc = 0; if (cp <= 0x0000007F) { rc = 1; out[0] = (char)cp; } else if (cp <= 0x000007FF) { rc = 2; out[0] = (cp >> 6 & 31) | 192; out[1] = (cp & 63) | 128; } else if (cp <= 0x0000FFFF) { rc = 3; out[0] = (cp >> 12 & 15) | 224; out[1] = (cp >> 6 & 63) | 128; out[2] = (cp & 63) | 128; } else if (cp <= 0x001FFFFF) { rc = 4; out[0] = (cp >> 18 & 7) | 240; out[1] = (cp >> 12 & 63) | 128; out[2] = (cp >> 6 & 63) | 128; out[3] = (cp & 63) | 128; } else if (cp <= 0x03FFFFFF) { rc = 5; out[0] = (cp >> 24 & 3) | 248; out[1] = (cp >> 18 & 63) | 128; out[2] = (cp >> 12 & 63) | 128; out[3] = (cp >> 6 & 63) | 128; out[4] = (cp & 63) | 128; } else if (cp <= 0x7FFFFFFF) { rc = 6; out[0] = (cp >> 30 & 1) | 252; out[1] = (cp >> 24 & 63) | 128; out[2] = (cp >> 18 & 63) | 128; out[3] = (cp >> 12 & 63) | 128; out[4] = (cp >> 6 & 63) | 128; out[5] = (cp & 63) | 128; } else return 0; out[rc] = '\0'; return rc; } /* * If the string contains escape sequences, * replace it with an allocated rendering and return 1, * such that the caller can free it after use. * Otherwise, do nothing and return 0. */ static int render_string(char **public, size_t *psz) { const char *src, *scp, *addcp, *seq; char *dst; size_t ssz, dsz, addsz; char utfbuf[7], res[6]; int seqlen, unicode; res[0] = '\\'; res[1] = '\t'; res[2] = ASCII_NBRSP; res[3] = ASCII_HYPH; res[4] = ASCII_BREAK; res[5] = '\0'; src = scp = *public; ssz = *psz; dst = NULL; dsz = 0; while (scp < src + *psz) { /* Leave normal characters unchanged. */ if (strchr(res, *scp) == NULL) { if (dst != NULL) dst[dsz++] = *scp; scp++; continue; } /* * Found something that requires replacing, * make sure we have a destination buffer. */ if (dst == NULL) { dst = mandoc_malloc(ssz + 1); dsz = scp - src; memcpy(dst, src, dsz); } /* Handle single-char special characters. */ switch (*scp) { case '\\': break; case '\t': case ASCII_NBRSP: dst[dsz++] = ' '; scp++; continue; case ASCII_HYPH: dst[dsz++] = '-'; /* FALLTHROUGH */ case ASCII_BREAK: scp++; continue; default: abort(); } /* * Found an escape sequence. * Read past the slash, then parse it. * Ignore everything except characters. */ scp++; if (mandoc_escape(&scp, &seq, &seqlen) != ESCAPE_SPECIAL) continue; /* * Render the special character * as either UTF-8 or ASCII. */ if (write_utf8) { unicode = mchars_spec2cp(seq, seqlen); if (unicode <= 0) continue; addsz = utf8(unicode, utfbuf); if (addsz == 0) continue; addcp = utfbuf; } else { addcp = mchars_spec2str(seq, seqlen, &addsz); if (addcp == NULL) continue; if (*addcp == ASCII_NBRSP) { addcp = " "; addsz = 1; } } /* Copy the rendered glyph into the stream. */ ssz += addsz; dst = mandoc_realloc(dst, ssz + 1); memcpy(dst + dsz, addcp, addsz); dsz += addsz; } if (dst != NULL) { *public = dst; *psz = dsz; } /* Trim trailing whitespace and NUL-terminate. */ while (*psz > 0 && (*public)[*psz - 1] == ' ') --*psz; if (dst != NULL) { (*public)[*psz] = '\0'; return 1; } else return 0; } static void dbadd_mlink(const struct mlink *mlink) { dba_page_alias(mlink->mpage->dba, mlink->name, NAME_FILE); dba_page_add(mlink->mpage->dba, DBP_SECT, mlink->dsec); dba_page_add(mlink->mpage->dba, DBP_SECT, mlink->fsec); dba_page_add(mlink->mpage->dba, DBP_ARCH, mlink->arch); dba_page_add(mlink->mpage->dba, DBP_FILE, mlink->file); } /* * Flush the current page's terms (and their bits) into the database. * Also, handle escape sequences at the last possible moment. */ static void dbadd(struct dba *dba, struct mpage *mpage) { struct mlink *mlink; struct str *key; char *cp; uint64_t mask; size_t i; unsigned int slot; int mustfree; mlink = mpage->mlinks; if (nodb) { for (key = ohash_first(&names, &slot); NULL != key; key = ohash_next(&names, &slot)) free(key); for (key = ohash_first(&strings, &slot); NULL != key; key = ohash_next(&strings, &slot)) free(key); if (0 == debug) return; while (NULL != mlink) { fputs(mlink->name, stdout); if (NULL == mlink->next || strcmp(mlink->dsec, mlink->next->dsec) || strcmp(mlink->fsec, mlink->next->fsec) || strcmp(mlink->arch, mlink->next->arch)) { putchar('('); if ('\0' == *mlink->dsec) fputs(mlink->fsec, stdout); else fputs(mlink->dsec, stdout); if ('\0' != *mlink->arch) printf("/%s", mlink->arch); putchar(')'); } mlink = mlink->next; if (NULL != mlink) fputs(", ", stdout); } printf(" - %s\n", mpage->desc); return; } if (debug) say(mlink->file, "Adding to database"); cp = mpage->desc; i = strlen(cp); mustfree = render_string(&cp, &i); mpage->dba = dba_page_new(dba->pages, *mpage->arch == '\0' ? mlink->arch : mpage->arch, cp, mlink->file, mpage->form); if (mustfree) free(cp); dba_page_add(mpage->dba, DBP_SECT, mpage->sec); while (mlink != NULL) { dbadd_mlink(mlink); mlink = mlink->next; } for (key = ohash_first(&names, &slot); NULL != key; key = ohash_next(&names, &slot)) { assert(key->mpage == mpage); dba_page_alias(mpage->dba, key->key, key->mask); free(key); } for (key = ohash_first(&strings, &slot); NULL != key; key = ohash_next(&strings, &slot)) { assert(key->mpage == mpage); i = 0; for (mask = TYPE_Xr; mask <= TYPE_Lb; mask *= 2) { if (key->mask & mask) dba_macro_add(dba->macros, i, key->key, mpage->dba); i++; } free(key); } } static void dbprune(struct dba *dba) { struct dba_array *page, *files; char *file; dba_array_FOREACH(dba->pages, page) { files = dba_array_get(page, DBP_FILE); dba_array_FOREACH(files, file) { if (*file < ' ') file++; if (ohash_find(&mlinks, ohash_qlookup(&mlinks, file)) != NULL) { if (debug) say(file, "Deleting from database"); dba_array_del(dba->pages); break; } } } } /* * Write the database from memory to disk. */ static void dbwrite(struct dba *dba) { char tfn[32]; int status; pid_t child; /* * Do not write empty databases, and delete existing ones * when makewhatis -u causes them to become empty. */ dba_array_start(dba->pages); if (dba_array_next(dba->pages) == NULL) { - if (unlink(MANDOC_DB) == -1) + if (unlink(MANDOC_DB) == -1 && errno != ENOENT) say(MANDOC_DB, "&unlink"); return; } /* * Build the database in a temporary file, * then atomically move it into place. */ if (dba_write(MANDOC_DB "~", dba) != -1) { if (rename(MANDOC_DB "~", MANDOC_DB) == -1) { exitcode = (int)MANDOCLEVEL_SYSERR; say(MANDOC_DB, "&rename"); unlink(MANDOC_DB "~"); } return; } /* * We lack write permission and cannot replace the database * file, but let's at least check whether the data changed. */ (void)strlcpy(tfn, "/tmp/mandocdb.XXXXXXXX", sizeof(tfn)); if (mkdtemp(tfn) == NULL) { exitcode = (int)MANDOCLEVEL_SYSERR; say("", "&%s", tfn); return; } (void)strlcat(tfn, "/" MANDOC_DB, sizeof(tfn)); if (dba_write(tfn, dba) == -1) { exitcode = (int)MANDOCLEVEL_SYSERR; say(tfn, "&dba_write"); goto out; } switch (child = fork()) { case -1: exitcode = (int)MANDOCLEVEL_SYSERR; say("", "&fork cmp"); return; case 0: execlp("cmp", "cmp", "-s", tfn, MANDOC_DB, (char *)NULL); say("", "&exec cmp"); exit(0); default: break; } if (waitpid(child, &status, 0) == -1) { exitcode = (int)MANDOCLEVEL_SYSERR; say("", "&wait cmp"); } else if (WIFSIGNALED(status)) { exitcode = (int)MANDOCLEVEL_SYSERR; say("", "cmp died from signal %d", WTERMSIG(status)); } else if (WEXITSTATUS(status)) { exitcode = (int)MANDOCLEVEL_SYSERR; say(MANDOC_DB, "Data changed, but cannot replace database"); } out: *strrchr(tfn, '/') = '\0'; switch (child = fork()) { case -1: exitcode = (int)MANDOCLEVEL_SYSERR; say("", "&fork rm"); return; case 0: execlp("rm", "rm", "-rf", tfn, (char *)NULL); say("", "&exec rm"); exit((int)MANDOCLEVEL_SYSERR); default: break; } if (waitpid(child, &status, 0) == -1) { exitcode = (int)MANDOCLEVEL_SYSERR; say("", "&wait rm"); } else if (WIFSIGNALED(status) || WEXITSTATUS(status)) { exitcode = (int)MANDOCLEVEL_SYSERR; say("", "%s: Cannot remove temporary directory", tfn); } } static int set_basedir(const char *targetdir, int report_baddir) { static char startdir[PATH_MAX]; static int getcwd_status; /* 1 = ok, 2 = failure */ static int chdir_status; /* 1 = changed directory */ char *cp; /* * Remember the original working directory, if possible. * This will be needed if the second or a later directory * on the command line is given as a relative path. * Do not error out if the current directory is not * searchable: Maybe it won't be needed after all. */ if (0 == getcwd_status) { if (NULL == getcwd(startdir, sizeof(startdir))) { getcwd_status = 2; (void)strlcpy(startdir, strerror(errno), sizeof(startdir)); } else getcwd_status = 1; } /* * We are leaving the old base directory. * Do not use it any longer, not even for messages. */ *basedir = '\0'; /* * If and only if the directory was changed earlier and * the next directory to process is given as a relative path, * first go back, or bail out if that is impossible. */ if (chdir_status && '/' != *targetdir) { if (2 == getcwd_status) { exitcode = (int)MANDOCLEVEL_SYSERR; say("", "getcwd: %s", startdir); return 0; } if (-1 == chdir(startdir)) { exitcode = (int)MANDOCLEVEL_SYSERR; say("", "&chdir %s", startdir); return 0; } } /* * Always resolve basedir to the canonicalized absolute * pathname and append a trailing slash, such that * we can reliably check whether files are inside. */ if (NULL == realpath(targetdir, basedir)) { if (report_baddir || errno != ENOENT) { exitcode = (int)MANDOCLEVEL_BADARG; say("", "&%s: realpath", targetdir); } return 0; } else if (-1 == chdir(basedir)) { if (report_baddir || errno != ENOENT) { exitcode = (int)MANDOCLEVEL_BADARG; say("", "&chdir"); } return 0; } chdir_status = 1; cp = strchr(basedir, '\0'); if ('/' != cp[-1]) { if (cp - basedir >= PATH_MAX - 1) { exitcode = (int)MANDOCLEVEL_SYSERR; say("", "Filename too long"); return 0; } *cp++ = '/'; *cp = '\0'; } return 1; } static void say(const char *file, const char *format, ...) { va_list ap; int use_errno; if ('\0' != *basedir) fprintf(stderr, "%s", basedir); if ('\0' != *basedir && '\0' != *file) fputc('/', stderr); if ('\0' != *file) fprintf(stderr, "%s", file); use_errno = 1; if (NULL != format) { switch (*format) { case '&': format++; break; case '\0': format = NULL; break; default: use_errno = 0; break; } } if (NULL != format) { if ('\0' != *basedir || '\0' != *file) fputs(": ", stderr); va_start(ap, format); vfprintf(stderr, format, ap); va_end(ap); } if (use_errno) { if ('\0' != *basedir || '\0' != *file || NULL != format) fputs(": ", stderr); perror(NULL); } else fputc('\n', stderr); } Index: vendor/mdocml/dist/manpath.c =================================================================== --- vendor/mdocml/dist/manpath.c (revision 321806) +++ vendor/mdocml/dist/manpath.c (revision 321807) @@ -1,326 +1,333 @@ -/* $Id: manpath.c,v 1.33 2017/02/10 15:45:28 schwarze Exp $ */ +/* $Id: manpath.c,v 1.35 2017/07/01 09:47:30 schwarze Exp $ */ /* * Copyright (c) 2011, 2014, 2015, 2017 Ingo Schwarze * Copyright (c) 2011 Kristaps Dzonsons * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "config.h" #include #include #include #if HAVE_ERR #include #endif #include #include #include #include #include "mandoc_aux.h" #include "manconf.h" static void manconf_file(struct manconf *, const char *); static void manpath_add(struct manpaths *, const char *, int); static void manpath_parseline(struct manpaths *, char *, int); void manconf_parse(struct manconf *conf, const char *file, char *defp, char *auxp) { char *insert; /* Always prepend -m. */ manpath_parseline(&conf->manpath, auxp, 1); /* If -M is given, it overrides everything else. */ if (NULL != defp) { manpath_parseline(&conf->manpath, defp, 1); return; } /* MANPATH and man.conf(5) cooperate. */ defp = getenv("MANPATH"); if (NULL == file) file = MAN_CONF_FILE; /* No MANPATH; use man.conf(5) only. */ if (NULL == defp || '\0' == defp[0]) { manconf_file(conf, file); return; } /* Prepend man.conf(5) to MANPATH. */ if (':' == defp[0]) { manconf_file(conf, file); manpath_parseline(&conf->manpath, defp, 0); return; } /* Append man.conf(5) to MANPATH. */ if (':' == defp[strlen(defp) - 1]) { manpath_parseline(&conf->manpath, defp, 0); manconf_file(conf, file); return; } /* Insert man.conf(5) into MANPATH. */ insert = strstr(defp, "::"); if (NULL != insert) { *insert++ = '\0'; manpath_parseline(&conf->manpath, defp, 0); manconf_file(conf, file); manpath_parseline(&conf->manpath, insert + 1, 0); return; } /* MANPATH overrides man.conf(5) completely. */ manpath_parseline(&conf->manpath, defp, 0); } +void +manpath_base(struct manpaths *dirs) +{ + char path_base[] = MANPATH_BASE; + manpath_parseline(dirs, path_base, 0); +} + /* * Parse a FULL pathname from a colon-separated list of arrays. */ static void manpath_parseline(struct manpaths *dirs, char *path, int complain) { char *dir; if (NULL == path) return; for (dir = strtok(path, ":"); dir; dir = strtok(NULL, ":")) manpath_add(dirs, dir, complain); } /* * Add a directory to the array, ignoring bad directories. * Grow the array one-by-one for simplicity's sake. */ static void manpath_add(struct manpaths *dirs, const char *dir, int complain) { char buf[PATH_MAX]; struct stat sb; char *cp; size_t i; if (NULL == (cp = realpath(dir, buf))) { if (complain) warn("manpath: %s", dir); return; } for (i = 0; i < dirs->sz; i++) if (0 == strcmp(dirs->paths[i], dir)) return; if (stat(cp, &sb) == -1) { if (complain) warn("manpath: %s", dir); return; } dirs->paths = mandoc_reallocarray(dirs->paths, dirs->sz + 1, sizeof(char *)); dirs->paths[dirs->sz++] = mandoc_strdup(cp); } void manconf_free(struct manconf *conf) { size_t i; for (i = 0; i < conf->manpath.sz; i++) free(conf->manpath.paths[i]); free(conf->manpath.paths); free(conf->output.includes); free(conf->output.man); free(conf->output.paper); free(conf->output.style); } static void manconf_file(struct manconf *conf, const char *file) { const char *const toks[] = { "manpath", "output", "_whatdb" }; char manpath_default[] = MANPATH_DEFAULT; FILE *stream; char *line, *cp, *ep; size_t linesz, tok, toklen; ssize_t linelen; if ((stream = fopen(file, "r")) == NULL) goto out; line = NULL; linesz = 0; while ((linelen = getline(&line, &linesz, stream)) != -1) { cp = line; ep = cp + linelen - 1; while (ep > cp && isspace((unsigned char)*ep)) *ep-- = '\0'; while (isspace((unsigned char)*cp)) cp++; if (cp == ep || *cp == '#') continue; for (tok = 0; tok < sizeof(toks)/sizeof(toks[0]); tok++) { toklen = strlen(toks[tok]); if (cp + toklen < ep && isspace((unsigned char)cp[toklen]) && strncmp(cp, toks[tok], toklen) == 0) { cp += toklen; while (isspace((unsigned char)*cp)) cp++; break; } } switch (tok) { case 2: /* _whatdb */ while (ep > cp && ep[-1] != '/') ep--; if (ep == cp) continue; *ep = '\0'; /* FALLTHROUGH */ case 0: /* manpath */ manpath_add(&conf->manpath, cp, 0); *manpath_default = '\0'; break; case 1: /* output */ manconf_output(&conf->output, cp, 1); break; default: break; } } free(line); fclose(stream); out: if (*manpath_default != '\0') manpath_parseline(&conf->manpath, manpath_default, 0); } int manconf_output(struct manoutput *conf, const char *cp, int fromfile) { const char *const toks[] = { "includes", "man", "paper", "style", "indent", "width", "fragment", "mdoc", "noval" }; const char *errstr; char *oldval; size_t len, tok; for (tok = 0; tok < sizeof(toks)/sizeof(toks[0]); tok++) { len = strlen(toks[tok]); if ( ! strncmp(cp, toks[tok], len) && strchr(" = ", cp[len]) != NULL) { cp += len; if (*cp == '=') cp++; while (isspace((unsigned char)*cp)) cp++; break; } } if (tok < 6 && *cp == '\0') { warnx("-O %s=?: Missing argument value", toks[tok]); return -1; } if ((tok == 6 || tok == 7) && *cp != '\0') { warnx("-O %s: Does not take a value: %s", toks[tok], cp); return -1; } switch (tok) { case 0: if (conf->includes != NULL) { oldval = mandoc_strdup(conf->includes); break; } conf->includes = mandoc_strdup(cp); return 0; case 1: if (conf->man != NULL) { oldval = mandoc_strdup(conf->man); break; } conf->man = mandoc_strdup(cp); return 0; case 2: if (conf->paper != NULL) { oldval = mandoc_strdup(conf->paper); break; } conf->paper = mandoc_strdup(cp); return 0; case 3: if (conf->style != NULL) { oldval = mandoc_strdup(conf->style); break; } conf->style = mandoc_strdup(cp); return 0; case 4: if (conf->indent) { mandoc_asprintf(&oldval, "%zu", conf->indent); break; } conf->indent = strtonum(cp, 0, 1000, &errstr); if (errstr == NULL) return 0; warnx("-O indent=%s is %s", cp, errstr); return -1; case 5: if (conf->width) { mandoc_asprintf(&oldval, "%zu", conf->width); break; } - conf->width = strtonum(cp, 58, 1000, &errstr); + conf->width = strtonum(cp, 1, 1000, &errstr); if (errstr == NULL) return 0; warnx("-O width=%s is %s", cp, errstr); return -1; case 6: conf->fragment = 1; return 0; case 7: conf->mdoc = 1; return 0; case 8: conf->noval = 1; return 0; default: if (fromfile) warnx("-O %s: Bad argument", cp); return -1; } if (fromfile == 0) warnx("-O %s=%s: Option already set to %s", toks[tok], cp, oldval); free(oldval); return -1; } Index: vendor/mdocml/dist/mansearch.c =================================================================== --- vendor/mdocml/dist/mansearch.c (revision 321806) +++ vendor/mdocml/dist/mansearch.c (revision 321807) @@ -1,788 +1,810 @@ /* $OpenBSD: mansearch.c,v 1.50 2016/07/09 15:23:36 schwarze Exp $ */ /* * Copyright (c) 2012 Kristaps Dzonsons * Copyright (c) 2013-2017 Ingo Schwarze * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "config.h" #include #include #include #if HAVE_ERR #include #endif #include #include #include #include #include #include #include #include #include #include #include #include "mandoc.h" #include "mandoc_aux.h" #include "mandoc_ohash.h" #include "manconf.h" #include "mansearch.h" #include "dbm.h" struct expr { /* Used for terms: */ struct dbm_match match; /* Match type and expression. */ uint64_t bits; /* Type mask. */ /* Used for OR and AND groups: */ struct expr *next; /* Next child in the parent group. */ struct expr *child; /* First child in this group. */ enum { EXPR_TERM, EXPR_OR, EXPR_AND } type; }; const char *const mansearch_keynames[KEY_MAX] = { "arch", "sec", "Xr", "Ar", "Fa", "Fl", "Dv", "Fn", "Ic", "Pa", "Cm", "Li", "Em", "Cd", "Va", "Ft", "Tn", "Er", "Ev", "Sy", "Sh", "In", "Ss", "Ox", "An", "Mt", "St", "Bx", "At", "Nx", "Fx", "Lk", "Ms", "Bsx", "Dx", "Rs", "Vt", "Lb", "Nm", "Nd" }; static struct ohash *manmerge(struct expr *, struct ohash *); static struct ohash *manmerge_term(struct expr *, struct ohash *); static struct ohash *manmerge_or(struct expr *, struct ohash *); static struct ohash *manmerge_and(struct expr *, struct ohash *); static char *buildnames(const struct dbm_page *); static char *buildoutput(size_t, struct dbm_page *); static size_t lstlen(const char *, size_t); static void lstcat(char *, size_t *, const char *, const char *); static int lstmatch(const char *, const char *); static struct expr *exprcomp(const struct mansearch *, int, char *[], int *); static struct expr *expr_and(const struct mansearch *, int, char *[], int *); static struct expr *exprterm(const struct mansearch *, int, char *[], int *); static void exprfree(struct expr *); static int manpage_compare(const void *, const void *); int mansearch(const struct mansearch *search, const struct manpaths *paths, int argc, char *argv[], struct manpage **res, size_t *sz) { char buf[PATH_MAX]; struct dbm_res *rp; struct expr *e; struct dbm_page *page; struct manpage *mpage; struct ohash *htab; size_t cur, i, maxres, outkey; unsigned int slot; int argi, chdir_status, getcwd_status, im; argi = 0; if ((e = exprcomp(search, argc, argv, &argi)) == NULL) { *sz = 0; return 0; } cur = maxres = 0; - *res = NULL; + if (res != NULL) + *res = NULL; outkey = KEY_Nd; if (search->outkey != NULL) for (im = 0; im < KEY_MAX; im++) if (0 == strcasecmp(search->outkey, mansearch_keynames[im])) { outkey = im; break; } /* * Remember the original working directory, if possible. * This will be needed if the second or a later directory * is given as a relative path. * Do not error out if the current directory is not * searchable: Maybe it won't be needed after all. */ if (getcwd(buf, PATH_MAX) == NULL) { getcwd_status = 0; (void)strlcpy(buf, strerror(errno), sizeof(buf)); } else getcwd_status = 1; /* * Loop over the directories (containing databases) for us to * search. * Don't let missing/bad databases/directories phase us. * In each, try to open the resident database and, if it opens, * scan it for our match expression. */ chdir_status = 0; for (i = 0; i < paths->sz; i++) { if (chdir_status && paths->paths[i][0] != '/') { if ( ! getcwd_status) { warnx("%s: getcwd: %s", paths->paths[i], buf); continue; } else if (chdir(buf) == -1) { warn("%s", buf); continue; } } if (chdir(paths->paths[i]) == -1) { warn("%s", paths->paths[i]); continue; } chdir_status = 1; if (dbm_open(MANDOC_DB) == -1) { if (errno != ENOENT) warn("%s/%s", paths->paths[i], MANDOC_DB); continue; } if ((htab = manmerge(e, NULL)) == NULL) { dbm_close(); continue; } for (rp = ohash_first(htab, &slot); rp != NULL; rp = ohash_next(htab, &slot)) { page = dbm_page_get(rp->page); if (lstmatch(search->sec, page->sect) == 0 || lstmatch(search->arch, page->arch) == 0) continue; + if (res == NULL) { + cur = 1; + break; + } if (cur + 1 > maxres) { maxres += 1024; *res = mandoc_reallocarray(*res, maxres, sizeof(**res)); } mpage = *res + cur; mandoc_asprintf(&mpage->file, "%s/%s", paths->paths[i], page->file + 1); mpage->names = buildnames(page); mpage->output = buildoutput(outkey, page); mpage->ipath = i; mpage->bits = rp->bits; mpage->sec = *page->sect - '0'; if (mpage->sec < 0 || mpage->sec > 9) mpage->sec = 10; mpage->form = *page->file; free(rp); cur++; } ohash_delete(htab); free(htab); dbm_close(); /* * In man(1) mode, prefer matches in earlier trees * over matches in later trees. */ if (cur && search->firstmatch) break; } - qsort(*res, cur, sizeof(struct manpage), manpage_compare); + if (res != NULL) + qsort(*res, cur, sizeof(struct manpage), manpage_compare); if (chdir_status && getcwd_status && chdir(buf) == -1) warn("%s", buf); exprfree(e); *sz = cur; - return 1; + return res != NULL || cur; } /* * Merge the results for the expression tree rooted at e * into the the result list htab. */ static struct ohash * manmerge(struct expr *e, struct ohash *htab) { switch (e->type) { case EXPR_TERM: return manmerge_term(e, htab); case EXPR_OR: return manmerge_or(e->child, htab); case EXPR_AND: return manmerge_and(e->child, htab); default: abort(); } } static struct ohash * manmerge_term(struct expr *e, struct ohash *htab) { struct dbm_res res, *rp; uint64_t ib; unsigned int slot; int im; if (htab == NULL) { htab = mandoc_malloc(sizeof(*htab)); mandoc_ohash_init(htab, 4, offsetof(struct dbm_res, page)); } for (im = 0, ib = 1; im < KEY_MAX; im++, ib <<= 1) { if ((e->bits & ib) == 0) continue; switch (ib) { case TYPE_arch: dbm_page_byarch(&e->match); break; case TYPE_sec: dbm_page_bysect(&e->match); break; case TYPE_Nm: dbm_page_byname(&e->match); break; case TYPE_Nd: dbm_page_bydesc(&e->match); break; default: dbm_page_bymacro(im - 2, &e->match); break; } /* * When hashing for deduplication, use the unique * page ID itself instead of a hash function; * that is quite efficient. */ for (;;) { res = dbm_page_next(); if (res.page == -1) break; slot = ohash_lookup_memory(htab, (char *)&res, sizeof(res.page), res.page); if ((rp = ohash_find(htab, slot)) != NULL) { rp->bits |= res.bits; continue; } rp = mandoc_malloc(sizeof(*rp)); *rp = res; ohash_insert(htab, slot, rp); } } return htab; } static struct ohash * manmerge_or(struct expr *e, struct ohash *htab) { while (e != NULL) { htab = manmerge(e, htab); e = e->next; } return htab; } static struct ohash * manmerge_and(struct expr *e, struct ohash *htab) { struct ohash *hand, *h1, *h2; struct dbm_res *res; unsigned int slot1, slot2; /* Evaluate the first term of the AND clause. */ hand = manmerge(e, NULL); while ((e = e->next) != NULL) { /* Evaluate the next term and prepare for ANDing. */ h2 = manmerge(e, NULL); if (ohash_entries(h2) < ohash_entries(hand)) { h1 = h2; h2 = hand; } else h1 = hand; hand = mandoc_malloc(sizeof(*hand)); mandoc_ohash_init(hand, 4, offsetof(struct dbm_res, page)); /* Keep all pages that are in both result sets. */ for (res = ohash_first(h1, &slot1); res != NULL; res = ohash_next(h1, &slot1)) { if (ohash_find(h2, ohash_lookup_memory(h2, (char *)res, sizeof(res->page), res->page)) == NULL) free(res); else ohash_insert(hand, ohash_lookup_memory(hand, (char *)res, sizeof(res->page), res->page), res); } /* Discard the merged results. */ for (res = ohash_first(h2, &slot2); res != NULL; res = ohash_next(h2, &slot2)) free(res); ohash_delete(h2); free(h2); ohash_delete(h1); free(h1); } /* Merge the result of the AND into htab. */ if (htab == NULL) return hand; for (res = ohash_first(hand, &slot1); res != NULL; res = ohash_next(hand, &slot1)) { slot2 = ohash_lookup_memory(htab, (char *)res, sizeof(res->page), res->page); if (ohash_find(htab, slot2) == NULL) ohash_insert(htab, slot2, res); else free(res); } /* Discard the merged result. */ ohash_delete(hand); free(hand); return htab; } void mansearch_free(struct manpage *res, size_t sz) { size_t i; for (i = 0; i < sz; i++) { free(res[i].file); free(res[i].names); free(res[i].output); } free(res); } static int manpage_compare(const void *vp1, const void *vp2) { const struct manpage *mp1, *mp2; + const char *cp1, *cp2; + size_t sz1, sz2; int diff; mp1 = vp1; mp2 = vp2; - return (diff = mp2->bits - mp1->bits) ? diff : - (diff = mp1->sec - mp2->sec) ? diff : - strcasecmp(mp1->names, mp2->names); + if ((diff = mp2->bits - mp1->bits) || + (diff = mp1->sec - mp2->sec)) + return diff; + + /* Fall back to alphabetic ordering of names. */ + sz1 = strcspn(mp1->names, "("); + sz2 = strcspn(mp2->names, "("); + if (sz1 < sz2) + sz1 = sz2; + if ((diff = strncasecmp(mp1->names, mp2->names, sz1))) + return diff; + + /* For identical names and sections, prefer arch-dependent. */ + cp1 = strchr(mp1->names + sz1, '/'); + cp2 = strchr(mp2->names + sz2, '/'); + return cp1 != NULL && cp2 != NULL ? strcasecmp(cp1, cp2) : + cp1 != NULL ? -1 : cp2 != NULL ? 1 : 0; } static char * buildnames(const struct dbm_page *page) { char *buf; size_t i, sz; sz = lstlen(page->name, 2) + 1 + lstlen(page->sect, 2) + (page->arch == NULL ? 0 : 1 + lstlen(page->arch, 2)) + 2; buf = mandoc_malloc(sz); i = 0; lstcat(buf, &i, page->name, ", "); buf[i++] = '('; lstcat(buf, &i, page->sect, ", "); if (page->arch != NULL) { buf[i++] = '/'; lstcat(buf, &i, page->arch, ", "); } buf[i++] = ')'; buf[i++] = '\0'; assert(i == sz); return buf; } /* * Count the buffer space needed to print the NUL-terminated * list of NUL-terminated strings, when printing sep separator * characters between strings. */ static size_t lstlen(const char *cp, size_t sep) { size_t sz; for (sz = 0;; sz++) { if (cp[0] == '\0') { if (cp[1] == '\0') break; sz += sep - 1; } else if (cp[0] < ' ') sz--; cp++; } return sz; } /* * Print the NUL-terminated list of NUL-terminated strings * into the buffer, seperating strings with sep. */ static void lstcat(char *buf, size_t *i, const char *cp, const char *sep) { const char *s; for (;;) { if (cp[0] == '\0') { if (cp[1] == '\0') break; s = sep; while (*s != '\0') buf[(*i)++] = *s++; } else if (cp[0] >= ' ') buf[(*i)++] = cp[0]; cp++; } } /* * Return 1 if the string *want occurs in any of the strings * in the NUL-terminated string list *have, or 0 otherwise. * If either argument is NULL or empty, assume no filtering * is desired and return 1. */ static int lstmatch(const char *want, const char *have) { if (want == NULL || have == NULL || *have == '\0') return 1; while (*have != '\0') { if (strcasestr(have, want) != NULL) return 1; have = strchr(have, '\0') + 1; } return 0; } /* * Build a list of values taken by the macro im in the manual page. */ static char * buildoutput(size_t im, struct dbm_page *page) { const char *oldoutput, *sep, *input; char *output, *newoutput, *value; size_t sz, i; switch (im) { case KEY_Nd: return mandoc_strdup(page->desc); case KEY_Nm: input = page->name; break; case KEY_sec: input = page->sect; break; case KEY_arch: input = page->arch; if (input == NULL) input = "all\0"; break; default: input = NULL; break; } if (input != NULL) { sz = lstlen(input, 3) + 1; output = mandoc_malloc(sz); i = 0; lstcat(output, &i, input, " # "); output[i++] = '\0'; assert(i == sz); return output; } output = NULL; dbm_macro_bypage(im - 2, page->addr); while ((value = dbm_macro_next()) != NULL) { if (output == NULL) { oldoutput = ""; sep = ""; } else { oldoutput = output; sep = " # "; } mandoc_asprintf(&newoutput, "%s%s%s", oldoutput, sep, value); free(output); output = newoutput; } return output; } /* * Compile a set of string tokens into an expression. * Tokens in "argv" are assumed to be individual expression atoms (e.g., * "(", "foo=bar", etc.). */ static struct expr * exprcomp(const struct mansearch *search, int argc, char *argv[], int *argi) { struct expr *parent, *child; int needterm, nested; if ((nested = *argi) == argc) return NULL; needterm = 1; parent = child = NULL; while (*argi < argc) { if (strcmp(")", argv[*argi]) == 0) { if (needterm) warnx("missing term " "before closing parenthesis"); needterm = 0; if (nested) break; warnx("ignoring unmatched right parenthesis"); ++*argi; continue; } if (strcmp("-o", argv[*argi]) == 0) { if (needterm) { if (*argi > 0) warnx("ignoring -o after %s", argv[*argi - 1]); else warnx("ignoring initial -o"); } needterm = 1; ++*argi; continue; } needterm = 0; if (child == NULL) { child = expr_and(search, argc, argv, argi); continue; } if (parent == NULL) { parent = mandoc_calloc(1, sizeof(*parent)); parent->type = EXPR_OR; parent->next = NULL; parent->child = child; } child->next = expr_and(search, argc, argv, argi); child = child->next; } if (needterm && *argi) warnx("ignoring trailing %s", argv[*argi - 1]); return parent == NULL ? child : parent; } static struct expr * expr_and(const struct mansearch *search, int argc, char *argv[], int *argi) { struct expr *parent, *child; int needterm; needterm = 1; parent = child = NULL; while (*argi < argc) { if (strcmp(")", argv[*argi]) == 0) { if (needterm) warnx("missing term " "before closing parenthesis"); needterm = 0; break; } if (strcmp("-o", argv[*argi]) == 0) break; if (strcmp("-a", argv[*argi]) == 0) { if (needterm) { if (*argi > 0) warnx("ignoring -a after %s", argv[*argi - 1]); else warnx("ignoring initial -a"); } needterm = 1; ++*argi; continue; } if (needterm == 0) break; if (child == NULL) { child = exprterm(search, argc, argv, argi); if (child != NULL) needterm = 0; continue; } needterm = 0; if (parent == NULL) { parent = mandoc_calloc(1, sizeof(*parent)); parent->type = EXPR_AND; parent->next = NULL; parent->child = child; } child->next = exprterm(search, argc, argv, argi); if (child->next != NULL) { child = child->next; needterm = 0; } } if (needterm && *argi) warnx("ignoring trailing %s", argv[*argi - 1]); return parent == NULL ? child : parent; } static struct expr * exprterm(const struct mansearch *search, int argc, char *argv[], int *argi) { char errbuf[BUFSIZ]; struct expr *e; char *key, *val; uint64_t iterbit; int cs, i, irc; if (strcmp("(", argv[*argi]) == 0) { ++*argi; e = exprcomp(search, argc, argv, argi); if (*argi < argc) { assert(strcmp(")", argv[*argi]) == 0); ++*argi; } else warnx("unclosed parenthesis"); return e; } if (strcmp("-i", argv[*argi]) == 0 && *argi + 1 < argc) { cs = 0; ++*argi; } else cs = 1; e = mandoc_calloc(1, sizeof(*e)); e->type = EXPR_TERM; e->bits = 0; e->next = NULL; e->child = NULL; if (search->argmode == ARG_NAME) { e->bits = TYPE_Nm; e->match.type = DBM_EXACT; e->match.str = argv[(*argi)++]; return e; } /* * Separate macro keys from search string. * If needed, request regular expression handling. */ if (search->argmode == ARG_WORD) { e->bits = TYPE_Nm; e->match.type = DBM_REGEX; #if HAVE_REWB_BSD mandoc_asprintf(&val, "[[:<:]]%s[[:>:]]", argv[*argi]); #elif HAVE_REWB_SYSV mandoc_asprintf(&val, "\\<%s\\>", argv[*argi]); #else mandoc_asprintf(&val, "(^|[^a-zA-Z01-9_])%s([^a-zA-Z01-9_]|$)", argv[*argi]); #endif cs = 0; } else if ((val = strpbrk(argv[*argi], "=~")) == NULL) { e->bits = TYPE_Nm | TYPE_Nd; e->match.type = DBM_SUB; e->match.str = argv[*argi]; } else { if (val == argv[*argi]) e->bits = TYPE_Nm | TYPE_Nd; if (*val == '=') { e->match.type = DBM_SUB; e->match.str = val + 1; } else e->match.type = DBM_REGEX; *val++ = '\0'; if (strstr(argv[*argi], "arch") != NULL) cs = 0; } /* Compile regular expressions. */ if (e->match.type == DBM_REGEX) { e->match.re = mandoc_malloc(sizeof(*e->match.re)); irc = regcomp(e->match.re, val, REG_EXTENDED | REG_NOSUB | (cs ? 0 : REG_ICASE)); if (irc) { regerror(irc, e->match.re, errbuf, sizeof(errbuf)); warnx("regcomp /%s/: %s", val, errbuf); } if (search->argmode == ARG_WORD) free(val); if (irc) { free(e->match.re); free(e); ++*argi; return NULL; } } if (e->bits) { ++*argi; return e; } /* * Parse out all possible fields. * If the field doesn't resolve, bail. */ while (NULL != (key = strsep(&argv[*argi], ","))) { if ('\0' == *key) continue; for (i = 0, iterbit = 1; i < KEY_MAX; i++, iterbit <<= 1) { if (0 == strcasecmp(key, mansearch_keynames[i])) { e->bits |= iterbit; break; } } if (i == KEY_MAX) { if (strcasecmp(key, "any")) warnx("treating unknown key " "\"%s\" as \"any\"", key); e->bits |= ~0ULL; } } ++*argi; return e; } static void exprfree(struct expr *e) { if (e->next != NULL) exprfree(e->next); if (e->child != NULL) exprfree(e->child); free(e); } Index: vendor/mdocml/dist/mdoc.7 =================================================================== --- vendor/mdocml/dist/mdoc.7 (revision 321806) +++ vendor/mdocml/dist/mdoc.7 (revision 321807) @@ -1,3225 +1,3220 @@ -.\" $Id: mdoc.7,v 1.264 2017/05/05 15:54:59 schwarze Exp $ +.\" $Id: mdoc.7,v 1.269 2017/07/20 16:24:53 schwarze Exp $ .\" .\" Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons .\" Copyright (c) 2010, 2011, 2013-2017 Ingo Schwarze .\" .\" Permission to use, copy, modify, and distribute this software for any .\" purpose with or without fee is hereby granted, provided that the above .\" copyright notice and this permission notice appear in all copies. .\" .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. .\" -.Dd $Mdocdate: May 5 2017 $ +.Dd $Mdocdate: July 20 2017 $ .Dt MDOC 7 .Os .Sh NAME .Nm mdoc .Nd semantic markup language for formatting manual pages .Sh DESCRIPTION The .Nm mdoc language supports authoring of manual pages for the .Xr man 1 utility by allowing semantic annotations of words, phrases, page sections and complete manual pages. Such annotations are used by formatting tools to achieve a uniform presentation across all manuals written in .Nm , and to support hyperlinking if supported by the output medium. .Pp This reference document describes the structure of manual pages and the syntax and usage of the .Nm language. The reference implementation of a parsing and formatting tool is .Xr mandoc 1 ; the .Sx COMPATIBILITY section describes compatibility with other implementations. .Pp In an .Nm document, lines beginning with the control character .Sq \&. are called .Dq macro lines . The first word is the macro name. It consists of two or three letters. Most macro names begin with a capital letter. For a list of available macros, see .Sx MACRO OVERVIEW . The words following the macro name are arguments to the macro, optionally including the names of other, callable macros; see .Sx MACRO SYNTAX for details. .Pp Lines not beginning with the control character are called .Dq text lines . They provide free-form text to be printed; the formatting of the text depends on the respective processing context: .Bd -literal -offset indent \&.Sh Macro lines change control state. Text lines are interpreted within the current state. .Ed .Pp Many aspects of the basic syntax of the .Nm language are based on the .Xr roff 7 language; see the .Em LANGUAGE SYNTAX and .Em MACRO SYNTAX sections in the .Xr roff 7 manual for details, in particular regarding comments, escape sequences, whitespace, and quoting. However, using .Xr roff 7 requests in .Nm documents is discouraged; .Xr mandoc 1 supports some of them merely for backward compatibility. .Sh MANUAL STRUCTURE A well-formed .Nm document consists of a document prologue followed by one or more sections. .Pp The prologue, which consists of the .Sx \&Dd , .Sx \&Dt , and .Sx \&Os macros in that order, is required for every document. .Pp The first section (sections are denoted by .Sx \&Sh ) must be the NAME section, consisting of at least one .Sx \&Nm followed by .Sx \&Nd . .Pp Following that, convention dictates specifying at least the .Em SYNOPSIS and .Em DESCRIPTION sections, although this varies between manual sections. .Pp The following is a well-formed skeleton .Nm file for a utility .Qq progname : .Bd -literal -offset indent \&.Dd $\&Mdocdate$ \&.Dt PROGNAME section \&.Os \&.Sh NAME \&.Nm progname \&.Nd one line about what it does \&.\e\(dq .Sh LIBRARY \&.\e\(dq For sections 2, 3, and 9 only. \&.\e\(dq Not used in OpenBSD. \&.Sh SYNOPSIS \&.Nm progname \&.Op Fl options \&.Ar \&.Sh DESCRIPTION The \&.Nm utility processes files ... \&.\e\(dq .Sh CONTEXT \&.\e\(dq For section 9 functions only. \&.\e\(dq .Sh IMPLEMENTATION NOTES \&.\e\(dq Not used in OpenBSD. \&.\e\(dq .Sh RETURN VALUES \&.\e\(dq For sections 2, 3, and 9 function return values only. \&.\e\(dq .Sh ENVIRONMENT \&.\e\(dq For sections 1, 6, 7, and 8 only. \&.\e\(dq .Sh FILES \&.\e\(dq .Sh EXIT STATUS \&.\e\(dq For sections 1, 6, and 8 only. \&.\e\(dq .Sh EXAMPLES \&.\e\(dq .Sh DIAGNOSTICS \&.\e\(dq For sections 1, 4, 6, 7, 8, and 9 printf/stderr messages only. \&.\e\(dq .Sh ERRORS \&.\e\(dq For sections 2, 3, 4, and 9 errno settings only. \&.\e\(dq .Sh SEE ALSO \&.\e\(dq .Xr foobar 1 \&.\e\(dq .Sh STANDARDS \&.\e\(dq .Sh HISTORY \&.\e\(dq .Sh AUTHORS \&.\e\(dq .Sh CAVEATS \&.\e\(dq .Sh BUGS \&.\e\(dq .Sh SECURITY CONSIDERATIONS \&.\e\(dq Not used in OpenBSD. .Ed .Pp The sections in an .Nm document are conventionally ordered as they appear above. Sections should be composed as follows: .Bl -ohang -offset Ds .It Em NAME The name(s) and a one line description of the documented material. The syntax for this as follows: .Bd -literal -offset indent \&.Nm name0 , \&.Nm name1 , \&.Nm name2 \&.Nd a one line description .Ed .Pp Multiple .Sq \&Nm names should be separated by commas. .Pp The .Sx \&Nm macro(s) must precede the .Sx \&Nd macro. .Pp See .Sx \&Nm and .Sx \&Nd . .It Em LIBRARY The name of the library containing the documented material, which is assumed to be a function in a section 2, 3, or 9 manual. The syntax for this is as follows: .Bd -literal -offset indent \&.Lb libarm .Ed .Pp See .Sx \&Lb . .It Em SYNOPSIS Documents the utility invocation syntax, function call syntax, or device configuration. .Pp For the first, utilities (sections 1, 6, and 8), this is generally structured as follows: .Bd -literal -offset indent \&.Nm bar \&.Op Fl v \&.Op Fl o Ar file \&.Op Ar \&.Nm foo \&.Op Fl v \&.Op Fl o Ar file \&.Op Ar .Ed .Pp Commands should be ordered alphabetically. .Pp For the second, function calls (sections 2, 3, 9): .Bd -literal -offset indent \&.In header.h \&.Vt extern const char *global; \&.Ft "char *" \&.Fn foo "const char *src" \&.Ft "char *" \&.Fn bar "const char *src" .Ed .Pp Ordering of .Sx \&In , .Sx \&Vt , .Sx \&Fn , and .Sx \&Fo macros should follow C header-file conventions. .Pp And for the third, configurations (section 4): .Bd -literal -offset indent \&.Cd \(dqit* at isa? port 0x2e\(dq \&.Cd \(dqit* at isa? port 0x4e\(dq .Ed .Pp Manuals not in these sections generally don't need a .Em SYNOPSIS . .Pp Some macros are displayed differently in the .Em SYNOPSIS section, particularly .Sx \&Nm , .Sx \&Cd , .Sx \&Fd , .Sx \&Fn , .Sx \&Fo , .Sx \&In , .Sx \&Vt , and .Sx \&Ft . All of these macros are output on their own line. If two such dissimilar macros are pairwise invoked (except for .Sx \&Ft before .Sx \&Fo or .Sx \&Fn ) , they are separated by a vertical space, unless in the case of .Sx \&Fo , .Sx \&Fn , and .Sx \&Ft , which are always separated by vertical space. .Pp When text and macros following an .Sx \&Nm macro starting an input line span multiple output lines, all output lines but the first will be indented to align with the text immediately following the .Sx \&Nm macro, up to the next .Sx \&Nm , .Sx \&Sh , or .Sx \&Ss macro or the end of an enclosing block, whichever comes first. .It Em DESCRIPTION This begins with an expansion of the brief, one line description in .Em NAME : .Bd -literal -offset indent The \&.Nm utility does this, that, and the other. .Ed .Pp It usually follows with a breakdown of the options (if documenting a command), such as: .Bd -literal -offset indent The arguments are as follows: \&.Bl \-tag \-width Ds \&.It Fl v Print verbose information. \&.El .Ed .Pp List the options in alphabetical order, uppercase before lowercase for each letter and with no regard to whether an option takes an argument. Put digits in ascending order before all letter options. .Pp Manuals not documenting a command won't include the above fragment. .Pp Since the .Em DESCRIPTION section usually contains most of the text of a manual, longer manuals often use the .Sx \&Ss macro to form subsections. In very long manuals, the .Em DESCRIPTION may be split into multiple sections, each started by an .Sx \&Sh macro followed by a non-standard section name, and each having several subsections, like in the present .Nm manual. .It Em CONTEXT This section lists the contexts in which functions can be called in section 9. The contexts are autoconf, process, or interrupt. .It Em IMPLEMENTATION NOTES Implementation-specific notes should be kept here. This is useful when implementing standard functions that may have side effects or notable algorithmic implications. .It Em RETURN VALUES This section documents the return values of functions in sections 2, 3, and 9. .Pp See .Sx \&Rv . .It Em ENVIRONMENT Lists the environment variables used by the utility, and explains the syntax and semantics of their values. The .Xr environ 7 manual provides examples of typical content and formatting. .Pp See .Sx \&Ev . .It Em FILES Documents files used. It's helpful to document both the file name and a short description of how the file is used (created, modified, etc.). .Pp See .Sx \&Pa . .It Em EXIT STATUS This section documents the command exit status for section 1, 6, and 8 utilities. Historically, this information was described in .Em DIAGNOSTICS , a practise that is now discouraged. .Pp See .Sx \&Ex . .It Em EXAMPLES Example usages. This often contains snippets of well-formed, well-tested invocations. Make sure that examples work properly! .It Em DIAGNOSTICS Documents error messages. In section 4 and 9 manuals, these are usually messages printed by the kernel to the console and to the kernel log. In section 1, 6, 7, and 8, these are usually messages printed by userland programs to the standard error output. .Pp Historically, this section was used in place of .Em EXIT STATUS for manuals in sections 1, 6, and 8; however, this practise is discouraged. .Pp See .Sx \&Bl .Fl diag . .It Em ERRORS Documents .Xr errno 2 settings in sections 2, 3, 4, and 9. .Pp See .Sx \&Er . .It Em SEE ALSO References other manuals with related topics. This section should exist for most manuals. Cross-references should conventionally be ordered first by section, then alphabetically (ignoring case). .Pp References to other documentation concerning the topic of the manual page, for example authoritative books or journal articles, may also be provided in this section. .Pp See .Sx \&Rs and .Sx \&Xr . .It Em STANDARDS References any standards implemented or used. If not adhering to any standards, the .Em HISTORY section should be used instead. .Pp See .Sx \&St . .It Em HISTORY A brief history of the subject, including where it was first implemented, and when it was ported to or reimplemented for the operating system at hand. .It Em AUTHORS Credits to the person or persons who wrote the code and/or documentation. Authors should generally be noted by both name and email address. .Pp See .Sx \&An . .It Em CAVEATS Common misuses and misunderstandings should be explained in this section. .It Em BUGS Known bugs, limitations, and work-arounds should be described in this section. .It Em SECURITY CONSIDERATIONS Documents any security precautions that operators should consider. .El .Sh MACRO OVERVIEW This overview is sorted such that macros of similar purpose are listed together, to help find the best macro for any given purpose. Deprecated macros are not included in the overview, but can be found below in the alphabetical .Sx MACRO REFERENCE . .Ss Document preamble and NAME section macros .Bl -column "Brq, Bro, Brc" description .It Sx \&Dd Ta document date: Cm $\&Mdocdate$ | Ar month day , year .It Sx \&Dt Ta document title: Ar TITLE section Op Ar arch .It Sx \&Os Ta operating system version: Op Ar system Op Ar version .It Sx \&Nm Ta document name (one argument) .It Sx \&Nd Ta document description (one line) .El .Ss Sections and cross references .Bl -column "Brq, Bro, Brc" description .It Sx \&Sh Ta section header (one line) .It Sx \&Ss Ta subsection header (one line) .It Sx \&Sx Ta internal cross reference to a section or subsection .It Sx \&Xr Ta cross reference to another manual page: Ar name section .It Sx \&Pp , \&Lp Ta start a text paragraph (no arguments) .El .Ss Displays and lists .Bl -column "Brq, Bro, Brc" description .It Sx \&Bd , \&Ed Ta display block: .Fl Ar type .Op Fl offset Ar width .Op Fl compact .It Sx \&D1 Ta indented display (one line) .It Sx \&Dl Ta indented literal display (one line) .It Sx \&Ql Ta in-line literal display: Ql text .It Sx \&Bl , \&El Ta list block: .Fl Ar type .Op Fl width Ar val .Op Fl offset Ar val .Op Fl compact .It Sx \&It Ta list item (syntax depends on Fl Ar type ) .It Sx \&Ta Ta table cell separator in Sx \&Bl Fl column No lists .It Sx \&Rs , \&%* , \&Re Ta bibliographic block (references) .El .Ss Spacing control .Bl -column "Brq, Bro, Brc" description .It Sx \&Pf Ta prefix, no following horizontal space (one argument) .It Sx \&Ns Ta roman font, no preceding horizontal space (no arguments) .It Sx \&Ap Ta apostrophe without surrounding whitespace (no arguments) .It Sx \&Sm Ta switch horizontal spacing mode: Op Cm on | off .It Sx \&Bk , \&Ek Ta keep block: Fl words .El -.Ss Semantic markup for command line utilities: +.Ss Semantic markup for command line utilities .Bl -column "Brq, Bro, Brc" description .It Sx \&Nm Ta start a SYNOPSIS block with the name of a utility .It Sx \&Fl Ta command line options (flags) (>=0 arguments) .It Sx \&Cm Ta command modifier (>0 arguments) .It Sx \&Ar Ta command arguments (>=0 arguments) .It Sx \&Op , \&Oo , \&Oc Ta optional syntax elements (enclosure) .It Sx \&Ic Ta internal or interactive command (>0 arguments) .It Sx \&Ev Ta environmental variable (>0 arguments) .It Sx \&Pa Ta file system path (>=0 arguments) .El -.Ss Semantic markup for function libraries: +.Ss Semantic markup for function libraries .Bl -column "Brq, Bro, Brc" description .It Sx \&Lb Ta function library (one argument) .It Sx \&In Ta include file (one argument) .It Sx \&Fd Ta other preprocessor directive (>0 arguments) .It Sx \&Ft Ta function type (>0 arguments) .It Sx \&Fo , \&Fc Ta function block: Ar funcname .It Sx \&Fn Ta function name: .Op Ar functype .Ar funcname .Oo .Op Ar argtype .Ar argname .Oc .It Sx \&Fa Ta function argument (>0 arguments) .It Sx \&Vt Ta variable type (>0 arguments) .It Sx \&Va Ta variable name (>0 arguments) .It Sx \&Dv Ta defined variable or preprocessor constant (>0 arguments) .It Sx \&Er Ta error constant (>0 arguments) .It Sx \&Ev Ta environmental variable (>0 arguments) .El -.Ss Various semantic markup: +.Ss Various semantic markup .Bl -column "Brq, Bro, Brc" description .It Sx \&An Ta author name (>0 arguments) .It Sx \&Lk Ta hyperlink: Ar uri Op Ar name .It Sx \&Mt Ta Do mailto Dc hyperlink: Ar address .It Sx \&Cd Ta kernel configuration declaration (>0 arguments) .It Sx \&Ad Ta memory address (>0 arguments) .It Sx \&Ms Ta mathematical symbol (>0 arguments) .El .Ss Physical markup .Bl -column "Brq, Bro, Brc" description .It Sx \&Em Ta italic font or underline (emphasis) (>0 arguments) .It Sx \&Sy Ta boldface font (symbolic) (>0 arguments) .It Sx \&Li Ta typewriter font (literal) (>0 arguments) .It Sx \&No Ta return to roman font (normal) (no arguments) .It Sx \&Bf , \&Ef Ta font block: .Op Fl Ar type | Cm \&Em | \&Li | \&Sy .El .Ss Physical enclosures .Bl -column "Brq, Bro, Brc" description .It Sx \&Dq , \&Do , \&Dc Ta enclose in typographic double quotes: Dq text .It Sx \&Qq , \&Qo , \&Qc Ta enclose in typewriter double quotes: Qq text .It Sx \&Sq , \&So , \&Sc Ta enclose in single quotes: Sq text .It Sx \&Pq , \&Po , \&Pc Ta enclose in parentheses: Pq text .It Sx \&Bq , \&Bo , \&Bc Ta enclose in square brackets: Bq text .It Sx \&Brq , \&Bro , \&Brc Ta enclose in curly braces: Brq text .It Sx \&Aq , \&Ao , \&Ac Ta enclose in angle brackets: Aq text .It Sx \&Eo , \&Ec Ta generic enclosure .El .Ss Text production .Bl -column "Brq, Bro, Brc" description .It Sx \&Ex Fl std Ta standard command exit values: Op Ar utility ... .It Sx \&Rv Fl std Ta standard function return values: Op Ar function ... .It Sx \&St Ta reference to a standards document (one argument) .It Sx \&At Ta At .It Sx \&Bx Ta Bx .It Sx \&Bsx Ta Bsx .It Sx \&Nx Ta Nx .It Sx \&Fx Ta Fx .It Sx \&Ox Ta Ox .It Sx \&Dx Ta Dx .El .Sh MACRO REFERENCE This section is a canonical reference of all macros, arranged alphabetically. For the scoping of individual macros, see .Sx MACRO SYNTAX . .Ss \&%A Author name of an .Sx \&Rs block. Multiple authors should each be accorded their own .Sx \%%A line. Author names should be ordered with full or abbreviated forename(s) first, then full surname. .Ss \&%B Book title of an .Sx \&Rs block. This macro may also be used in a non-bibliographic context when referring to book titles. .Ss \&%C Publication city or location of an .Sx \&Rs block. .Ss \&%D Publication date of an .Sx \&Rs block. Recommended formats of arguments are .Ar month day , year or just .Ar year . .Ss \&%I Publisher or issuer name of an .Sx \&Rs block. .Ss \&%J Journal name of an .Sx \&Rs block. .Ss \&%N Issue number (usually for journals) of an .Sx \&Rs block. .Ss \&%O Optional information of an .Sx \&Rs block. .Ss \&%P Book or journal page number of an .Sx \&Rs block. .Ss \&%Q Institutional author (school, government, etc.) of an .Sx \&Rs block. Multiple institutional authors should each be accorded their own .Sx \&%Q line. .Ss \&%R Technical report name of an .Sx \&Rs block. .Ss \&%T Article title of an .Sx \&Rs block. This macro may also be used in a non-bibliographical context when referring to article titles. .Ss \&%U URI of reference document. .Ss \&%V Volume number of an .Sx \&Rs block. .Ss \&Ac Close an .Sx \&Ao block. Does not have any tail arguments. .Ss \&Ad Memory address. Do not use this for postal addresses. .Pp Examples: .Dl \&.Ad [0,$] .Dl \&.Ad 0x00000000 .Ss \&An Author name. Can be used both for the authors of the program, function, or driver documented in the manual, or for the authors of the manual itself. Requires either the name of an author or one of the following arguments: .Pp .Bl -tag -width "-nosplitX" -offset indent -compact .It Fl split Start a new output line before each subsequent invocation of .Sx \&An . .It Fl nosplit The opposite of .Fl split . .El .Pp The default is .Fl nosplit . The effect of selecting either of the .Fl split modes ends at the beginning of the .Em AUTHORS section. In the .Em AUTHORS section, the default is .Fl nosplit for the first author listing and .Fl split for all other author listings. .Pp Examples: .Dl \&.An -nosplit .Dl \&.An Kristaps Dzonsons \&Aq \&Mt kristaps@bsd.lv .Ss \&Ao Begin a block enclosed by angle brackets. Does not have any head arguments. .Pp Examples: .Dl \&.Fl -key= \&Ns \&Ao \&Ar val \&Ac .Pp See also .Sx \&Aq . .Ss \&Ap Inserts an apostrophe without any surrounding whitespace. This is generally used as a grammatical device when referring to the verb form of a function. .Pp Examples: .Dl \&.Fn execve \&Ap d .Ss \&Aq Encloses its arguments in angle brackets. .Pp Examples: .Dl \&.Fl -key= \&Ns \&Aq \&Ar val .Pp .Em Remarks : this macro is often abused for rendering URIs, which should instead use .Sx \&Lk or .Sx \&Mt , or to note pre-processor .Dq Li #include statements, which should use .Sx \&In . .Pp See also .Sx \&Ao . .Ss \&Ar Command arguments. If an argument is not provided, the string .Dq file ...\& is used as a default. .Pp Examples: .Dl ".Fl o Ar file" .Dl ".Ar" .Dl ".Ar arg1 , arg2 ." .Pp The arguments to the .Sx \&Ar macro are names and placeholders for command arguments; for fixed strings to be passed verbatim as arguments, use .Sx \&Fl or .Sx \&Cm . .Ss \&At Formats an .At version. Accepts one optional argument: .Pp .Bl -tag -width "v[1-7] | 32vX" -offset indent -compact .It Cm v[1-7] | 32v A version of .At . .It Cm III .At III . -.It Cm V[.[1-4]]? +.It Cm V | V.[1-4] A version of .At V . .El .Pp Note that these arguments do not begin with a hyphen. .Pp Examples: .Dl \&.At .Dl \&.At III .Dl \&.At V.1 .Pp See also .Sx \&Bsx , .Sx \&Bx , .Sx \&Dx , .Sx \&Fx , .Sx \&Nx , and .Sx \&Ox . .Ss \&Bc Close a .Sx \&Bo block. Does not have any tail arguments. .Ss \&Bd Begin a display block. Its syntax is as follows: .Bd -ragged -offset indent .Pf \. Sx \&Bd .Fl Ns Ar type .Op Fl offset Ar width .Op Fl compact .Ed .Pp Display blocks are used to select a different indentation and justification than the one used by the surrounding text. They may contain both macro lines and text lines. By default, a display block is preceded by a vertical space. .Pp The .Ar type must be one of the following: .Bl -tag -width 13n -offset indent .It Fl centered Produce one output line from each input line, and center-justify each line. Using this display type is not recommended; many .Nm implementations render it poorly. .It Fl filled Change the positions of line breaks to fill each line, and left- and right-justify the resulting block. .It Fl literal Produce one output line from each input line, and do not justify the block at all. Preserve white space as it appears in the input. Always use a constant-width font. Use this for displaying source code. .It Fl ragged Change the positions of line breaks to fill each line, and left-justify the resulting block. .It Fl unfilled The same as .Fl literal , but using the same font as for normal text, which is a variable width font if supported by the output device. .El .Pp The .Ar type must be provided first. Additional arguments may follow: .Bl -tag -width 13n -offset indent .It Fl offset Ar width Indent the display by the .Ar width , which may be one of the following: .Bl -item .It One of the pre-defined strings .Cm indent , the width of a standard indentation (six constant width characters); .Cm indent-two , twice .Cm indent ; .Cm left , which has no effect; .Cm right , which justifies to the right margin; or .Cm center , which aligns around an imagined center axis. .It A macro invocation, which selects a predefined width associated with that macro. The most popular is the imaginary macro .Ar \&Ds , which resolves to .Sy 6n . .It A scaling width as described in .Xr roff 7 . .It An arbitrary string, which indents by the length of this string. .El .Pp When the argument is missing, .Fl offset is ignored. .It Fl compact Do not assert vertical space before the display. .El .Pp Examples: .Bd -literal -offset indent \&.Bd \-literal \-offset indent \-compact Hello world. \&.Ed .Ed .Pp See also .Sx \&D1 and .Sx \&Dl . .Ss \&Bf Change the font mode for a scoped block of text. Its syntax is as follows: .Bd -ragged -offset indent .Pf \. Sx \&Bf .Oo .Fl emphasis | literal | symbolic | .Cm \&Em | \&Li | \&Sy .Oc .Ed .Pp The .Fl emphasis and .Cm \&Em argument are equivalent, as are .Fl symbolic and .Cm \&Sy , and .Fl literal and .Cm \&Li . Without an argument, this macro does nothing. The font mode continues until broken by a new font mode in a nested scope or .Sx \&Ef is encountered. .Pp See also .Sx \&Li , .Sx \&Ef , .Sx \&Em , and .Sx \&Sy . .Ss \&Bk For each macro, keep its output together on the same output line, until the end of the macro or the end of the input line is reached, whichever comes first. Line breaks in text lines are unaffected. The syntax is as follows: .Pp .D1 Pf \. Sx \&Bk Fl words .Pp The .Fl words argument is required; additional arguments are ignored. .Pp The following example will not break within each .Sx \&Op macro line: .Bd -literal -offset indent \&.Bk \-words \&.Op Fl f Ar flags \&.Op Fl o Ar output \&.Ek .Ed .Pp Be careful in using over-long lines within a keep block! Doing so will clobber the right margin. .Ss \&Bl Begin a list. Lists consist of items specified using the .Sx \&It macro, containing a head or a body or both. The list syntax is as follows: .Bd -ragged -offset indent .Pf \. Sx \&Bl .Fl Ns Ar type .Op Fl width Ar val .Op Fl offset Ar val .Op Fl compact .Op HEAD ... .Ed .Pp The list .Ar type is mandatory and must be specified first. The .Fl width and .Fl offset arguments accept macro names as described for .Sx \&Bd .Fl offset , scaling widths as described in .Xr roff 7 , or use the length of the given string. The .Fl offset is a global indentation for the whole list, affecting both item heads and bodies. For those list types supporting it, the .Fl width argument requests an additional indentation of item bodies, to be added to the .Fl offset . Unless the .Fl compact argument is specified, list entries are separated by vertical space. .Pp A list must specify one of the following list types: .Bl -tag -width 12n -offset indent .It Fl bullet No item heads can be specified, but a bullet will be printed at the head of each item. Item bodies start on the same output line as the bullet and are indented according to the .Fl width argument. .It Fl column A columnated list. The .Fl width argument has no effect; instead, the string length of each argument specifies the width of one column. If the first line of the body of a .Fl column list is not an .Sx \&It macro line, .Sx \&It contexts spanning one input line each are implied until an .Sx \&It macro line is encountered, at which point items start being interpreted as described in the .Sx \&It documentation. .It Fl dash Like .Fl bullet , except that dashes are used in place of bullets. .It Fl diag Like .Fl inset , except that item heads are not parsed for macro invocations. Most often used in the .Em DIAGNOSTICS section with error constants in the item heads. .It Fl enum A numbered list. No item heads can be specified. Formatted like .Fl bullet , except that cardinal numbers are used in place of bullets, starting at 1. .It Fl hang Like .Fl tag , except that the first lines of item bodies are not indented, but follow the item heads like in .Fl inset lists. .It Fl hyphen Synonym for .Fl dash . .It Fl inset Item bodies follow items heads on the same line, using normal inter-word spacing. Bodies are not indented, and the .Fl width argument is ignored. .It Fl item No item heads can be specified, and none are printed. Bodies are not indented, and the .Fl width argument is ignored. .It Fl ohang Item bodies start on the line following item heads and are not indented. The .Fl width argument is ignored. .It Fl tag Item bodies are indented according to the .Fl width argument. When an item head fits inside the indentation, the item body follows this head on the same output line. Otherwise, the body starts on the output line following the head. .El .Pp Lists may be nested within lists and displays. Nesting of .Fl column and .Fl enum lists may not be portable. .Pp See also .Sx \&El and .Sx \&It . .Ss \&Bo Begin a block enclosed by square brackets. Does not have any head arguments. .Pp Examples: .Bd -literal -offset indent -compact \&.Bo 1 , \&.Dv BUFSIZ \&Bc .Ed .Pp See also .Sx \&Bq . .Ss \&Bq Encloses its arguments in square brackets. .Pp Examples: .Dl \&.Bq 1 , \&Dv BUFSIZ .Pp .Em Remarks : this macro is sometimes abused to emulate optional arguments for commands; the correct macros to use for this purpose are .Sx \&Op , .Sx \&Oo , and .Sx \&Oc . .Pp See also .Sx \&Bo . .Ss \&Brc Close a .Sx \&Bro block. Does not have any tail arguments. .Ss \&Bro Begin a block enclosed by curly braces. Does not have any head arguments. .Pp Examples: .Bd -literal -offset indent -compact \&.Bro 1 , ... , \&.Va n \&Brc .Ed .Pp See also .Sx \&Brq . .Ss \&Brq Encloses its arguments in curly braces. .Pp Examples: .Dl \&.Brq 1 , ... , \&Va n .Pp See also .Sx \&Bro . .Ss \&Bsx Format the .Bsx version provided as an argument, or a default value if no argument is provided. .Pp Examples: .Dl \&.Bsx 1.0 .Dl \&.Bsx .Pp See also .Sx \&At , .Sx \&Bx , .Sx \&Dx , .Sx \&Fx , .Sx \&Nx , and .Sx \&Ox . .Ss \&Bt Supported only for compatibility, do not use this in new manuals. Prints .Dq is currently in beta test. .Ss \&Bx Format the .Bx version provided as an argument, or a default value if no argument is provided. .Pp Examples: .Dl \&.Bx 4.3 Tahoe .Dl \&.Bx 4.4 .Dl \&.Bx .Pp See also .Sx \&At , .Sx \&Bsx , .Sx \&Dx , .Sx \&Fx , .Sx \&Nx , and .Sx \&Ox . .Ss \&Cd Kernel configuration declaration. This denotes strings accepted by .Xr config 8 . It is most often used in section 4 manual pages. .Pp Examples: .Dl \&.Cd device le0 at scode? .Pp .Em Remarks : this macro is commonly abused by using quoted literals to retain whitespace and align consecutive .Sx \&Cd declarations. This practise is discouraged. .Ss \&Cm Command modifiers. Typically used for fixed strings passed as arguments, unless .Sx \&Fl is more appropriate. Also useful when specifying configuration options or keys. .Pp Examples: .Dl ".Nm mt Fl f Ar device Cm rewind" .Dl ".Nm ps Fl o Cm pid , Ns Cm command" .Dl ".Nm dd Cm if= Ns Ar file1 Cm of= Ns Ar file2" .Dl ".Cm IdentityFile Pa ~/.ssh/id_rsa" .Dl ".Cm LogLevel Dv DEBUG" .Ss \&D1 One-line indented display. This is formatted by the default rules and is useful for simple indented statements. It is followed by a newline. .Pp Examples: .Dl \&.D1 \&Fl abcdefgh .Pp See also .Sx \&Bd and .Sx \&Dl . .Ss \&Db This macro is obsolete. No replacement is needed. It is ignored by .Xr mandoc 1 and groff including its arguments. It was formerly used to toggle a debugging mode. .Ss \&Dc Close a .Sx \&Do block. Does not have any tail arguments. .Ss \&Dd Document date for display in the page footer. This is the mandatory first macro of any .Nm manual. Its syntax is as follows: .Pp .D1 Pf \. Sx \&Dd Ar month day , year .Pp The .Ar month is the full English month name, the .Ar day is an optionally zero-padded numeral, and the .Ar year is the full four-digit year. .Pp Other arguments are not portable; the .Xr mandoc 1 utility handles them as follows: .Bl -dash -offset 3n -compact .It To have the date automatically filled in by the .Ox version of .Xr cvs 1 , the special string .Dq $\&Mdocdate$ can be given as an argument. .It The traditional, purely numeric .Xr man 7 format .Ar year Ns \(en Ns Ar month Ns \(en Ns Ar day is accepted, too. .It If a date string cannot be parsed, it is used verbatim. .It If no date string is given, the current date is used. .El .Pp Examples: .Dl \&.Dd $\&Mdocdate$ .Dl \&.Dd $\&Mdocdate: July 21 2007$ .Dl \&.Dd July 21, 2007 .Pp See also .Sx \&Dt and .Sx \&Os . .Ss \&Dl One-line indented display. This is formatted as literal text and is useful for commands and invocations. It is followed by a newline. .Pp Examples: .Dl \&.Dl % mandoc mdoc.7 \e(ba less .Pp See also .Sx \&Ql , .Sx \&Bd .Fl literal , and .Sx \&D1 . .Ss \&Do Begin a block enclosed by double quotes. Does not have any head arguments. .Pp Examples: .Bd -literal -offset indent -compact \&.Do April is the cruellest month \&.Dc \e(em T.S. Eliot .Ed .Pp See also .Sx \&Dq . .Ss \&Dq Encloses its arguments in .Dq typographic double-quotes. .Pp Examples: .Bd -literal -offset indent -compact \&.Dq April is the cruellest month \e(em T.S. Eliot .Ed .Pp See also .Sx \&Qq , .Sx \&Sq , and .Sx \&Do . .Ss \&Dt Document title for display in the page header. This is the mandatory second macro of any .Nm file. Its syntax is as follows: .Bd -ragged -offset indent .Pf \. Sx \&Dt .Ar TITLE .Ar section .Op Ar arch .Ed .Pp Its arguments are as follows: .Bl -tag -width section -offset 2n .It Ar TITLE The document's title (name), defaulting to .Dq UNTITLED if unspecified. To achieve a uniform appearance of page header lines, it should by convention be all caps. .It Ar section The manual section. This may be one of .Cm 1 .Pq General Commands , .Cm 2 .Pq System Calls , .Cm 3 .Pq Library Functions , .Cm 3p .Pq Perl Library , .Cm 4 .Pq Device Drivers , .Cm 5 .Pq File Formats , .Cm 6 .Pq Games , .Cm 7 .Pq Miscellaneous Information , .Cm 8 .Pq System Manager's Manual , or .Cm 9 .Pq Kernel Developer's Manual . It should correspond to the manual's filename suffix and defaults to the empty string if unspecified. .It Ar arch This specifies the machine architecture a manual page applies to, where relevant, for example .Cm alpha , .Cm amd64 , .Cm i386 , or .Cm sparc64 . The list of valid architectures varies by operating system. .El .Pp Examples: .Dl \&.Dt FOO 1 .Dl \&.Dt FOO 9 i386 .Pp See also .Sx \&Dd and .Sx \&Os . .Ss \&Dv Defined variables such as preprocessor constants, constant symbols, enumeration values, and so on. .Pp Examples: .Dl \&.Dv NULL .Dl \&.Dv BUFSIZ .Dl \&.Dv STDOUT_FILENO .Pp See also .Sx \&Er and .Sx \&Ev for special-purpose constants, .Sx \&Va for variable symbols, and .Sx \&Fd for listing preprocessor variable definitions in the .Em SYNOPSIS . .Ss \&Dx Format the .Dx version provided as an argument, or a default value if no argument is provided. .Pp Examples: .Dl \&.Dx 2.4.1 .Dl \&.Dx .Pp See also .Sx \&At , .Sx \&Bsx , .Sx \&Bx , .Sx \&Fx , .Sx \&Nx , and .Sx \&Ox . .Ss \&Ec Close a scope started by .Sx \&Eo . Its syntax is as follows: .Pp .D1 Pf \. Sx \&Ec Op Ar TERM .Pp The .Ar TERM argument is used as the enclosure tail, for example, specifying \e(rq will emulate .Sx \&Dc . .Ss \&Ed End a display context started by .Sx \&Bd . .Ss \&Ef End a font mode context started by .Sx \&Bf . .Ss \&Ek End a keep context started by .Sx \&Bk . .Ss \&El End a list context started by .Sx \&Bl . .Pp See also .Sx \&Bl and .Sx \&It . .Ss \&Em Request an italic font. If the output device does not provide that, underline. .Pp This is most often used for stress emphasis (not to be confused with importance, see .Sx \&Sy ) . In the rare cases where none of the semantic markup macros fit, it can also be used for technical terms and placeholders, except that for syntax elements, .Sx \&Sy and .Sx \&Ar are preferred, respectively. .Pp Examples: .Bd -literal -compact -offset indent Selected lines are those \&.Em not matching any of the specified patterns. Some of the functions use a \&.Em hold space to save the pattern space for subsequent retrieval. .Ed .Pp See also .Sx \&Bf , .Sx \&Li , .Sx \&No , and .Sx \&Sy . .Ss \&En This macro is obsolete. Use .Sx \&Eo or any of the other enclosure macros. .Pp It encloses its argument in the delimiters specified by the last .Sx \&Es macro. .Ss \&Eo An arbitrary enclosure. Its syntax is as follows: .Pp .D1 Pf \. Sx \&Eo Op Ar TERM .Pp The .Ar TERM argument is used as the enclosure head, for example, specifying \e(lq will emulate .Sx \&Do . .Ss \&Er Error constants for definitions of the .Va errno libc global variable. This is most often used in section 2 and 3 manual pages. .Pp Examples: .Dl \&.Er EPERM .Dl \&.Er ENOENT .Pp See also .Sx \&Dv for general constants. .Ss \&Es This macro is obsolete. Use .Sx \&Eo or any of the other enclosure macros. .Pp It takes two arguments, defining the delimiters to be used by subsequent .Sx \&En macros. .Ss \&Ev Environmental variables such as those specified in .Xr environ 7 . .Pp Examples: .Dl \&.Ev DISPLAY .Dl \&.Ev PATH .Pp See also .Sx \&Dv for general constants. .Ss \&Ex Insert a standard sentence regarding command exit values of 0 on success and >0 on failure. This is most often used in section 1, 6, and 8 manual pages. Its syntax is as follows: .Pp .D1 Pf \. Sx \&Ex Fl std Op Ar utility ... .Pp If .Ar utility is not specified, the document's name set by .Sx \&Nm is used. Multiple .Ar utility arguments are treated as separate utilities. .Pp See also .Sx \&Rv . .Ss \&Fa Function argument or parameter. Its syntax is as follows: .Bd -ragged -offset indent .Pf \. Sx \&Fa .Qo .Op Ar argtype .Op Ar argname .Qc Ar \&... .Ed .Pp Each argument may be a name and a type (recommended for the .Em SYNOPSIS section), a name alone (for function invocations), or a type alone (for function prototypes). If both a type and a name are given or if the type consists of multiple words, all words belonging to the same function argument have to be given in a single argument to the .Sx \&Fa macro. .Pp This macro is also used to specify the field name of a structure. .Pp Most often, the .Sx \&Fa macro is used in the .Em SYNOPSIS within .Sx \&Fo blocks when documenting multi-line function prototypes. If invoked with multiple arguments, the arguments are separated by a comma. Furthermore, if the following macro is another .Sx \&Fa , the last argument will also have a trailing comma. .Pp Examples: .Dl \&.Fa \(dqconst char *p\(dq .Dl \&.Fa \(dqint a\(dq \(dqint b\(dq \(dqint c\(dq .Dl \&.Fa \(dqchar *\(dq size_t .Pp See also .Sx \&Fo . .Ss \&Fc End a function context started by .Sx \&Fo . .Ss \&Fd Preprocessor directive, in particular for listing it in the .Em SYNOPSIS . Historically, it was also used to document include files. The latter usage has been deprecated in favour of .Sx \&In . .Pp Its syntax is as follows: .Bd -ragged -offset indent .Pf \. Sx \&Fd .Li # Ns Ar directive .Op Ar argument ... .Ed .Pp Examples: .Dl \&.Fd #define sa_handler __sigaction_u.__sa_handler .Dl \&.Fd #define SIO_MAXNFDS .Dl \&.Fd #ifdef FS_DEBUG .Dl \&.Ft void .Dl \&.Fn dbg_open \(dqconst char *\(dq .Dl \&.Fd #endif .Pp See also .Sx MANUAL STRUCTURE , .Sx \&In , and .Sx \&Dv . .Ss \&Fl Command-line flag or option. Used when listing arguments to command-line utilities. Prints a fixed-width hyphen .Sq \- directly followed by each argument. If no arguments are provided, a hyphen is printed followed by a space. If the argument is a macro, a hyphen is prefixed to the subsequent macro output. .Pp Examples: .Dl ".Fl R Op Fl H | L | P" .Dl ".Op Fl 1AaCcdFfgHhikLlmnopqRrSsTtux" .Dl ".Fl type Cm d Fl name Pa CVS" .Dl ".Fl Ar signal_number" .Dl ".Fl o Fl" .Pp See also .Sx \&Cm . .Ss \&Fn A function name. Its syntax is as follows: .Bd -ragged -offset indent .Pf . Sx \&Fn .Op Ar functype .Ar funcname .Op Oo Ar argtype Oc Ar argname .Ed .Pp Function arguments are surrounded in parenthesis and are delimited by commas. If no arguments are specified, blank parenthesis are output. In the .Em SYNOPSIS section, this macro starts a new output line, and a blank line is automatically inserted between function definitions. .Pp Examples: .Dl \&.Fn \(dqint funcname\(dq \(dqint arg0\(dq \(dqint arg1\(dq .Dl \&.Fn funcname \(dqint arg0\(dq .Dl \&.Fn funcname arg0 .Pp .Bd -literal -offset indent -compact \&.Ft functype \&.Fn funcname .Ed .Pp When referring to a function documented in another manual page, use .Sx \&Xr instead. See also .Sx MANUAL STRUCTURE , .Sx \&Fo , and .Sx \&Ft . .Ss \&Fo Begin a function block. This is a multi-line version of .Sx \&Fn . Its syntax is as follows: .Pp .D1 Pf \. Sx \&Fo Ar funcname .Pp Invocations usually occur in the following context: .Bd -ragged -offset indent .Pf \. Sx \&Ft Ar functype .br .Pf \. Sx \&Fo Ar funcname .br .Pf \. Sx \&Fa Qq Ar argtype Ar argname .br \&.\.\. .br .Pf \. Sx \&Fc .Ed .Pp A .Sx \&Fo scope is closed by .Sx \&Fc . .Pp See also .Sx MANUAL STRUCTURE , .Sx \&Fa , .Sx \&Fc , and .Sx \&Ft . .Ss \&Fr This macro is obsolete. No replacement markup is needed. .Pp It was used to show numerical function return values in an italic font. .Ss \&Ft A function type. Its syntax is as follows: .Pp .D1 Pf \. Sx \&Ft Ar functype .Pp In the .Em SYNOPSIS section, a new output line is started after this macro. .Pp Examples: .Dl \&.Ft int .Bd -literal -offset indent -compact \&.Ft functype \&.Fn funcname .Ed .Pp See also .Sx MANUAL STRUCTURE , .Sx \&Fn , and .Sx \&Fo . .Ss \&Fx Format the .Fx version provided as an argument, or a default value if no argument is provided. .Pp Examples: .Dl \&.Fx 7.1 .Dl \&.Fx .Pp See also .Sx \&At , .Sx \&Bsx , .Sx \&Bx , .Sx \&Dx , .Sx \&Nx , and .Sx \&Ox . .Ss \&Hf This macro is not implemented in .Xr mandoc 1 . .Pp It was used to include the contents of a (header) file literally. The syntax was: .Pp .Dl Pf . Sx \&Hf Ar filename .Ss \&Ic Designate an internal or interactive command. This is similar to .Sx \&Cm but used for instructions rather than values. .Pp Examples: .Dl \&.Ic :wq .Dl \&.Ic hash .Dl \&.Ic alias .Pp Note that using .Sx \&Bd Fl literal or .Sx \&D1 is preferred for displaying code; the .Sx \&Ic macro is used when referring to specific instructions. .Ss \&In The name of an include file. This macro is most often used in section 2, 3, and 9 manual pages. .Pp When invoked as the first macro on an input line in the .Em SYNOPSIS section, the argument is displayed in angle brackets and preceded by .Qq #include , and a blank line is inserted in front if there is a preceding function declaration. In other sections, it only encloses its argument in angle brackets and causes no line break. .Pp Examples: .Dl \&.In sys/types.h .Pp See also .Sx MANUAL STRUCTURE . .Ss \&It A list item. The syntax of this macro depends on the list type. .Pp Lists of type .Fl hang , .Fl ohang , .Fl inset , and .Fl diag have the following syntax: .Pp .D1 Pf \. Sx \&It Ar args .Pp Lists of type .Fl bullet , .Fl dash , .Fl enum , .Fl hyphen and .Fl item have the following syntax: .Pp .D1 Pf \. Sx \&It .Pp with subsequent lines interpreted within the scope of the .Sx \&It until either a closing .Sx \&El or another .Sx \&It . .Pp The .Fl tag list has the following syntax: .Pp .D1 Pf \. Sx \&It Op Cm args .Pp Subsequent lines are interpreted as with .Fl bullet and family. The line arguments correspond to the list's left-hand side; body arguments correspond to the list's contents. .Pp The .Fl column list is the most complicated. Its syntax is as follows: .Pp .D1 Pf \. Sx \&It Ar cell Op Sx \&Ta Ar cell ... .D1 Pf \. Sx \&It Ar cell Op Ar cell ... .Pp The arguments consist of one or more lines of text and macros representing a complete table line. Cells within the line are delimited by the special .Sx \&Ta block macro or by literal tab characters. .Pp Using literal tabs is strongly discouraged because they are very hard to use correctly and .Nm code using them is very hard to read. In particular, a blank character is syntactically significant before and after the literal tab character. If a word precedes or follows the tab without an intervening blank, that word is never interpreted as a macro call, but always output literally. .Pp The tab cell delimiter may only be used within the .Sx \&It line itself; on following lines, only the .Sx \&Ta -macro can be used to delimit cells, and +macro can be used to delimit cells, and portability requires that .Sx \&Ta -is only recognised as a macro when called by other macros, -not as the first macro on a line. +is called by other macros: some parsers do not recognize it when +it appears as the first macro on a line. .Pp Note that quoted strings may span tab-delimited cells on an .Sx \&It line. For example, .Pp .Dl .It \(dqcol1 ,\& col2 ,\(dq \&; .Pp will preserve the whitespace before both commas, but not the whitespace before the semicolon. .Pp See also .Sx \&Bl . .Ss \&Lb Specify a library. The syntax is as follows: .Pp .D1 Pf \. Sx \&Lb Ar library .Pp The .Ar library parameter may be a system library, such as .Cm libz or .Cm libpam , in which case a small library description is printed next to the linker invocation; or a custom library, in which case the library name is printed in quotes. This is most commonly used in the .Em SYNOPSIS section as described in .Sx MANUAL STRUCTURE . .Pp Examples: .Dl \&.Lb libz .Dl \&.Lb libmandoc .Ss \&Li Denotes text that should be in a .Li literal font mode. Note that this is a presentation term and should not be used for stylistically decorating technical terms. .Pp On terminal output devices, this is often indistinguishable from normal text. .Pp See also .Sx \&Bf , .Sx \&Em , .Sx \&No , and .Sx \&Sy . .Ss \&Lk Format a hyperlink. Its syntax is as follows: .Pp .D1 Pf \. Sx \&Lk Ar uri Op Ar name .Pp Examples: .Dl \&.Lk http://bsd.lv \(dqThe BSD.lv Project\(dq .Dl \&.Lk http://bsd.lv .Pp See also .Sx \&Mt . .Ss \&Lp Synonym for .Sx \&Pp . .Ss \&Ms Display a mathematical symbol. Its syntax is as follows: .Pp .D1 Pf \. Sx \&Ms Ar symbol .Pp Examples: .Dl \&.Ms sigma .Dl \&.Ms aleph .Ss \&Mt Format a .Dq mailto: hyperlink. Its syntax is as follows: .Pp .D1 Pf \. Sx \&Mt Ar address .Pp Examples: .Dl \&.Mt discuss@manpages.bsd.lv .Dl \&.An Kristaps Dzonsons \&Aq \&Mt kristaps@bsd.lv .Ss \&Nd A one line description of the manual's content. This is the mandatory last macro of the .Em NAME section and not appropriate for other sections. .Pp Examples: .Dl Pf . Sx \&Nd mdoc language reference .Dl Pf . Sx \&Nd format and display UNIX manuals .Pp The .Sx \&Nd macro technically accepts child macros and terminates with a subsequent .Sx \&Sh invocation. Do not assume this behaviour: some .Xr whatis 1 database generators are not smart enough to parse more than the line arguments and will display macros verbatim. .Pp See also .Sx \&Nm . .Ss \&Nm The name of the manual page, or \(em in particular in section 1, 6, and 8 pages \(em of an additional command or feature documented in the manual page. When first invoked, the .Sx \&Nm macro expects a single argument, the name of the manual page. Usually, the first invocation happens in the .Em NAME section of the page. The specified name will be remembered and used whenever the macro is called again without arguments later in the page. The .Sx \&Nm macro uses .Sx Block full-implicit semantics when invoked as the first macro on an input line in the .Em SYNOPSIS section; otherwise, it uses ordinary .Sx In-line semantics. .Pp Examples: .Bd -literal -offset indent \&.Sh SYNOPSIS \&.Nm cat \&.Op Fl benstuv \&.Op Ar .Ed .Pp In the .Em SYNOPSIS of section 2, 3 and 9 manual pages, use the .Sx \&Fn macro rather than .Sx \&Nm to mark up the name of the manual page. .Ss \&No Normal text. Closes the scope of any preceding in-line macro. When used after physical formatting macros like .Sx \&Em or .Sx \&Sy , switches back to the standard font face and weight. Can also be used to embed plain text strings in macro lines using semantic annotation macros. .Pp Examples: .Dl ".Em italic , Sy bold , No and roman" .Pp .Bd -literal -offset indent -compact \&.Sm off \&.Cm :C No / Ar pattern No / Ar replacement No / \&.Sm on .Ed .Pp See also .Sx \&Em , .Sx \&Li , and .Sx \&Sy . .Ss \&Ns Suppress a space between the output of the preceding macro and the following text or macro. Following invocation, input is interpreted as normal text just like after an .Sx \&No macro. .Pp This has no effect when invoked at the start of a macro line. .Pp Examples: .Dl ".Ar name Ns = Ns Ar value" .Dl ".Cm :M Ns Ar pattern" .Dl ".Fl o Ns Ar output" .Pp See also .Sx \&No and .Sx \&Sm . .Ss \&Nx Format the .Nx version provided as an argument, or a default value if no argument is provided. .Pp Examples: .Dl \&.Nx 5.01 .Dl \&.Nx .Pp See also .Sx \&At , .Sx \&Bsx , .Sx \&Bx , .Sx \&Dx , .Sx \&Fx , and .Sx \&Ox . .Ss \&Oc Close multi-line .Sx \&Oo context. .Ss \&Oo Multi-line version of .Sx \&Op . .Pp Examples: .Bd -literal -offset indent -compact \&.Oo \&.Op Fl flag Ns Ar value \&.Oc .Ed .Ss \&Op Optional part of a command line. Prints the argument(s) in brackets. This is most often used in the .Em SYNOPSIS section of section 1 and 8 manual pages. .Pp Examples: .Dl \&.Op \&Fl a \&Ar b .Dl \&.Op \&Ar a | b .Pp See also .Sx \&Oo . .Ss \&Os Operating system version for display in the page footer. This is the mandatory third macro of any .Nm file. Its syntax is as follows: .Pp .D1 Pf \. Sx \&Os Op Ar system Op Ar version .Pp The optional .Ar system parameter specifies the relevant operating system or environment. It is suggested to leave it unspecified, in which case .Xr mandoc 1 uses its .Fl Ios argument or, if that isn't specified either, .Fa sysname and .Fa release as returned by .Xr uname 3 . .Pp Examples: .Dl \&.Os .Dl \&.Os KTH/CSC/TCS .Dl \&.Os BSD 4.3 .Pp See also .Sx \&Dd and .Sx \&Dt . .Ss \&Ot This macro is obsolete. Use .Sx \&Ft instead; with .Xr mandoc 1 , both have the same effect. .Pp Historical .Nm packages described it as .Dq "old function type (FORTRAN)" . .Ss \&Ox Format the .Ox version provided as an argument, or a default value if no argument is provided. .Pp Examples: .Dl \&.Ox 4.5 .Dl \&.Ox .Pp See also .Sx \&At , .Sx \&Bsx , .Sx \&Bx , .Sx \&Dx , .Sx \&Fx , and .Sx \&Nx . .Ss \&Pa An absolute or relative file system path, or a file or directory name. If an argument is not provided, the character .Sq \(ti is used as a default. .Pp Examples: .Dl \&.Pa /usr/bin/mandoc .Dl \&.Pa /usr/share/man/man7/mdoc.7 .Pp See also .Sx \&Lk . .Ss \&Pc Close parenthesised context opened by .Sx \&Po . .Ss \&Pf Removes the space between its argument and the following macro. Its syntax is as follows: .Pp .D1 .Pf Ar prefix macro arguments ... .Pp This is equivalent to: .Pp .D1 .No \e& Ns Ar prefix No \&Ns Ar macro arguments ... .Pp The .Ar prefix argument is not parsed for macro names or delimiters, but used verbatim as if it were escaped. .Pp Examples: .Dl ".Pf $ Ar variable_name" .Dl ".Pf . Ar macro_name" .Dl ".Pf 0x Ar hex_digits" .Pp See also .Sx \&Ns and .Sx \&Sm . .Ss \&Po Multi-line version of .Sx \&Pq . .Ss \&Pp Break a paragraph. This will assert vertical space between prior and subsequent macros and/or text. .Pp Paragraph breaks are not needed before or after .Sx \&Sh or .Sx \&Ss macros or before displays .Pq Sx \&Bd or lists .Pq Sx \&Bl unless the .Fl compact flag is given. .Ss \&Pq Parenthesised enclosure. .Pp See also .Sx \&Po . .Ss \&Qc Close quoted context opened by .Sx \&Qo . .Ss \&Ql In-line literal display. This can for example be used for complete command invocations and for multi-word code fragments when more specific markup is not appropriate and an indented display is not desired. While .Xr mandoc 1 always encloses the arguments in single quotes, other formatters usually omit the quotes on non-terminal output devices when the arguments have three or more characters. .Pp See also .Sx \&Dl and .Sx \&Bd .Fl literal . .Ss \&Qo Multi-line version of .Sx \&Qq . .Ss \&Qq Encloses its arguments in .Qq typewriter double-quotes. Consider using .Sx \&Dq . .Pp See also .Sx \&Dq , .Sx \&Sq , and .Sx \&Qo . .Ss \&Re Close an .Sx \&Rs block. Does not have any tail arguments. .Ss \&Rs Begin a bibliographic .Pq Dq reference block. Does not have any head arguments. The block macro may only contain .Sx \&%A , .Sx \&%B , .Sx \&%C , .Sx \&%D , .Sx \&%I , .Sx \&%J , .Sx \&%N , .Sx \&%O , .Sx \&%P , .Sx \&%Q , .Sx \&%R , .Sx \&%T , .Sx \&%U , and .Sx \&%V child macros (at least one must be specified). .Pp Examples: .Bd -literal -offset indent -compact \&.Rs \&.%A J. E. Hopcroft \&.%A J. D. Ullman \&.%B Introduction to Automata Theory, Languages, and Computation \&.%I Addison-Wesley \&.%C Reading, Massachusetts \&.%D 1979 \&.Re .Ed .Pp If an .Sx \&Rs block is used within a SEE ALSO section, a vertical space is asserted before the rendered output, else the block continues on the current line. .Ss \&Rv Insert a standard sentence regarding a function call's return value of 0 on success and \-1 on error, with the .Va errno libc global variable set on error. Its syntax is as follows: .Pp .D1 Pf \. Sx \&Rv Fl std Op Ar function ... .Pp If .Ar function is not specified, the document's name set by .Sx \&Nm is used. Multiple .Ar function arguments are treated as separate functions. .Pp See also .Sx \&Ex . .Ss \&Sc Close single-quoted context opened by .Sx \&So . .Ss \&Sh Begin a new section. For a list of conventional manual sections, see .Sx MANUAL STRUCTURE . These sections should be used unless it's absolutely necessary that custom sections be used. .Pp Section names should be unique so that they may be keyed by .Sx \&Sx . Although this macro is parsed, it should not consist of child node or it may not be linked with .Sx \&Sx . .Pp See also .Sx \&Pp , .Sx \&Ss , and .Sx \&Sx . .Ss \&Sm Switches the spacing mode for output generated from macros. Its syntax is as follows: .Pp .D1 Pf \. Sx \&Sm Op Cm on | off .Pp By default, spacing is .Cm on . When switched .Cm off , no white space is inserted between macro arguments and between the output generated from adjacent macros, but text lines still get normal spacing between words and sentences. .Pp When called without an argument, the .Sx \&Sm macro toggles the spacing mode. Using this is not recommended because it makes the code harder to read. .Ss \&So Multi-line version of .Sx \&Sq . .Ss \&Sq Encloses its arguments in .Sq typewriter single-quotes. .Pp See also .Sx \&Dq , .Sx \&Qq , and .Sx \&So . .Ss \&Ss Begin a new subsection. Unlike with .Sx \&Sh , there is no convention for the naming of subsections. Except .Em DESCRIPTION , the conventional sections described in .Sx MANUAL STRUCTURE rarely have subsections. .Pp Sub-section names should be unique so that they may be keyed by .Sx \&Sx . Although this macro is parsed, it should not consist of child node or it may not be linked with .Sx \&Sx . .Pp See also .Sx \&Pp , .Sx \&Sh , and .Sx \&Sx . .Ss \&St Replace an abbreviation for a standard with the full form. The following standards are recognised. Where multiple lines are given without a blank line in between, they all refer to the same standard, and using the first form is recommended. .Bl -tag -width 1n .It C language standards .Pp .Bl -tag -width "-p1003.1g-2000" -compact .It \-ansiC .St -ansiC .It \-ansiC-89 .St -ansiC-89 .It \-isoC .St -isoC .It \-isoC-90 .St -isoC-90 .br The original C standard. .Pp .It \-isoC-amd1 .St -isoC-amd1 .Pp .It \-isoC-tcor1 .St -isoC-tcor1 .Pp .It \-isoC-tcor2 .St -isoC-tcor2 .Pp .It \-isoC-99 .St -isoC-99 .br The second major version of the C language standard. .Pp .It \-isoC-2011 .St -isoC-2011 .br The third major version of the C language standard. .El .It POSIX.1 before the Single UNIX Specification .Pp .Bl -tag -width "-p1003.1g-2000" -compact .It \-p1003.1-88 .St -p1003.1-88 .It \-p1003.1 .St -p1003.1 .br The original POSIX standard, based on ANSI C. .Pp .It \-p1003.1-90 .St -p1003.1-90 .It \-iso9945-1-90 .St -iso9945-1-90 .br The first update of POSIX.1. .Pp .It \-p1003.1b-93 .St -p1003.1b-93 .It \-p1003.1b .St -p1003.1b .br Real-time extensions. .Pp .It \-p1003.1c-95 .St -p1003.1c-95 .br POSIX thread interfaces. .Pp .It \-p1003.1i-95 .St -p1003.1i-95 .br Technical Corrigendum. .Pp .It \-p1003.1-96 .St -p1003.1-96 .It \-iso9945-1-96 .St -iso9945-1-96 .br Includes POSIX.1-1990, 1b, 1c, and 1i. .El .It X/Open Portability Guide version 4 and related standards .Pp .Bl -tag -width "-p1003.1g-2000" -compact .It \-xpg3 .St -xpg3 .br An XPG4 precursor, published in 1989. .Pp .It \-p1003.2 .St -p1003.2 .It \-p1003.2-92 .St -p1003.2-92 .It \-iso9945-2-93 .St -iso9945-2-93 .br An XCU4 precursor. .Pp .It \-p1003.2a-92 .St -p1003.2a-92 .br Updates to POSIX.2. .Pp .It \-xpg4 .St -xpg4 .br Based on POSIX.1 and POSIX.2, published in 1992. .El .It Single UNIX Specification version 1 and related standards .Pp .Bl -tag -width "-p1003.1g-2000" -compact .It \-susv1 .St -susv1 .It \-xpg4.2 .St -xpg4.2 .br This standard was published in 1994. It was used as the basis for UNIX 95 certification. The following three refer to parts of it. .Pp .It \-xsh4.2 .St -xsh4.2 .Pp .It \-xcurses4.2 .St -xcurses4.2 .Pp .It \-p1003.1g-2000 .St -p1003.1g-2000 .br Networking APIs, including sockets. .Pp .It \-svid4 .St -svid4 , .br Published in 1995. .El .It Single UNIX Specification version 2 and related standards .Pp .Bl -tag -width "-p1003.1g-2000" -compact .It \-susv2 .St -susv2 This Standard was published in 1997 and is also called X/Open Portability Guide version 5. It was used as the basis for UNIX 98 certification. The following refer to parts of it. .Pp .It \-xbd5 .St -xbd5 .Pp .It \-xsh5 .St -xsh5 .Pp .It \-xcu5 .St -xcu5 .Pp .It \-xns5 .St -xns5 .It \-xns5.2 .St -xns5.2 .El .It Single UNIX Specification version 3 .Pp .Bl -tag -width "-p1003.1-2001" -compact .It \-p1003.1-2001 .St -p1003.1-2001 .It \-susv3 .St -susv3 .br This standard is based on C99, SUSv2, POSIX.1-1996, 1d, and 1j. It is also called X/Open Portability Guide version 6. It is used as the basis for UNIX 03 certification. .Pp .It \-p1003.1-2004 .St -p1003.1-2004 .br The second and last Technical Corrigendum. .El .It Single UNIX Specification version 4 .Pp .Bl -tag -width "-p1003.1g-2000" -compact .It \-p1003.1-2008 .St -p1003.1-2008 .It \-susv4 .St -susv4 .br This standard is also called X/Open Portability Guide version 7. -.Pp -.It \-p1003.1-2013 -.St -p1003.1-2013 -.br -This is the first Technical Corrigendum. .El .It Other standards .Pp .Bl -tag -width "-p1003.1g-2000" -compact .It \-ieee754 .St -ieee754 .br Floating-point arithmetic. .Pp .It \-iso8601 .St -iso8601 .br Representation of dates and times, published in 1988. .Pp .It \-iso8802-3 .St -iso8802-3 .br Ethernet local area networks. .Pp .It \-ieee1275-94 .St -ieee1275-94 .El .El .Ss \&Sx Reference a section or subsection in the same manual page. The referenced section or subsection name must be identical to the enclosed argument, including whitespace. .Pp Examples: .Dl \&.Sx MANUAL STRUCTURE .Pp See also .Sx \&Sh and .Sx \&Ss . .Ss \&Sy Request a boldface font. .Pp This is most often used to indicate importance or seriousness (not to be confused with stress emphasis, see .Sx \&Em ) . When none of the semantic macros fit, it is also adequate for syntax elements that have to be given or that appear verbatim. .Pp Examples: .Bd -literal -compact -offset indent \&.Sy Warning : If \&.Sy s appears in the owner permissions, set-user-ID mode is set. This utility replaces the former \&.Sy dumpdir program. .Ed .Pp See also .Sx \&Bf , .Sx \&Em , .Sx \&Li , and .Sx \&No . .Ss \&Ta Table cell separator in .Sx \&Bl Fl column lists; can only be used below .Sx \&It . .Ss \&Tn Supported only for compatibility, do not use this in new manuals. Even though the macro name .Pq Dq tradename suggests a semantic function, historic usage is inconsistent, mostly using it as a presentation-level macro to request a small caps font. .Ss \&Ud Supported only for compatibility, do not use this in new manuals. Prints out .Dq currently under development. .Ss \&Ux Supported only for compatibility, do not use this in new manuals. Prints out .Dq Ux . .Ss \&Va A variable name. .Pp Examples: .Dl \&.Va foo .Dl \&.Va const char *bar ; .Pp For function arguments and parameters, use .Sx \&Fa instead. For declarations of global variables in the .Em SYNOPSIS section, use .Sx \&Vt . .Ss \&Vt A variable type. .Pp This is also used for indicating global variables in the .Em SYNOPSIS section, in which case a variable name is also specified. Note that it accepts .Sx Block partial-implicit syntax when invoked as the first macro on an input line in the .Em SYNOPSIS section, else it accepts ordinary .Sx In-line syntax. In the former case, this macro starts a new output line, and a blank line is inserted in front if there is a preceding function definition or include directive. .Pp Examples: .Dl \&.Vt unsigned char .Dl \&.Vt extern const char * const sys_signame[] \&; .Pp For parameters in function prototypes, use .Sx \&Fa instead, for function return types .Sx \&Ft , and for variable names outside the .Em SYNOPSIS section .Sx \&Va , even when including a type with the name. See also .Sx MANUAL STRUCTURE . .Ss \&Xc Close a scope opened by .Sx \&Xo . .Ss \&Xo Extend the header of an .Sx \&It macro or the body of a partial-implicit block macro beyond the end of the input line. This macro originally existed to work around the 9-argument limit of historic .Xr roff 7 . .Ss \&Xr Link to another manual .Pq Qq cross-reference . Its syntax is as follows: .Pp .D1 Pf \. Sx \&Xr Ar name section .Pp Cross reference the .Ar name and .Ar section number of another man page. .Pp Examples: .Dl \&.Xr mandoc 1 .Dl \&.Xr mandoc 1 \&; .Dl \&.Xr mandoc 1 \&Ns s behaviour .Sh MACRO SYNTAX The syntax of a macro depends on its classification. In this section, .Sq \-arg refers to macro arguments, which may be followed by zero or more .Sq parm parameters; .Sq \&Yo opens the scope of a macro; and if specified, .Sq \&Yc closes it out. .Pp The .Em Callable column indicates that the macro may also be called by passing its name as an argument to another macro. For example, .Sq \&.Op \&Fl O \&Ar file produces .Sq Op Fl O Ar file . To prevent a macro call and render the macro name literally, escape it by prepending a zero-width space, .Sq \e& . For example, .Sq \&Op \e&Fl O produces .Sq Op \&Fl O . If a macro is not callable but its name appears as an argument to another macro, it is interpreted as opaque text. For example, .Sq \&.Fl \&Sh produces .Sq Fl \&Sh . .Pp The .Em Parsed column indicates whether the macro may call other macros by receiving their names as arguments. If a macro is not parsed but the name of another macro appears as an argument, it is interpreted as opaque text. .Pp The .Em Scope column, if applicable, describes closure rules. .Ss Block full-explicit Multi-line scope closed by an explicit closing macro. All macros contains bodies; only .Sx \&Bf and .Pq optionally .Sx \&Bl contain a head. .Bd -literal -offset indent \&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB \(lBbody...\(rB \&.Yc .Ed .Bl -column "MacroX" "CallableX" "ParsedX" "closed by XXX" -offset indent .It Em Macro Ta Em Callable Ta Em Parsed Ta Em Scope .It Sx \&Bd Ta \&No Ta \&No Ta closed by Sx \&Ed .It Sx \&Bf Ta \&No Ta \&No Ta closed by Sx \&Ef .It Sx \&Bk Ta \&No Ta \&No Ta closed by Sx \&Ek .It Sx \&Bl Ta \&No Ta \&No Ta closed by Sx \&El .It Sx \&Ed Ta \&No Ta \&No Ta opened by Sx \&Bd .It Sx \&Ef Ta \&No Ta \&No Ta opened by Sx \&Bf .It Sx \&Ek Ta \&No Ta \&No Ta opened by Sx \&Bk .It Sx \&El Ta \&No Ta \&No Ta opened by Sx \&Bl .El .Ss Block full-implicit Multi-line scope closed by end-of-file or implicitly by another macro. All macros have bodies; some .Po .Sx \&It Fl bullet , .Fl hyphen , .Fl dash , .Fl enum , .Fl item .Pc don't have heads; only one .Po .Sx \&It in .Sx \&Bl Fl column .Pc has multiple heads. .Bd -literal -offset indent \&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead... \(lBTa head...\(rB\(rB \(lBbody...\(rB .Ed .Bl -column "MacroX" "CallableX" "ParsedX" "closed by XXXXXXXXXXX" -offset indent .It Em Macro Ta Em Callable Ta Em Parsed Ta Em Scope .It Sx \&It Ta \&No Ta Yes Ta closed by Sx \&It , Sx \&El .It Sx \&Nd Ta \&No Ta \&No Ta closed by Sx \&Sh .It Sx \&Nm Ta \&No Ta Yes Ta closed by Sx \&Nm , Sx \&Sh , Sx \&Ss .It Sx \&Sh Ta \&No Ta Yes Ta closed by Sx \&Sh .It Sx \&Ss Ta \&No Ta Yes Ta closed by Sx \&Sh , Sx \&Ss .El .Pp Note that the .Sx \&Nm macro is a .Sx Block full-implicit macro only when invoked as the first macro in a .Em SYNOPSIS section line, else it is .Sx In-line . .Ss Block partial-explicit Like block full-explicit, but also with single-line scope. Each has at least a body and, in limited circumstances, a head .Po .Sx \&Fo , .Sx \&Eo .Pc and/or tail .Pq Sx \&Ec . .Bd -literal -offset indent \&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB \(lBbody...\(rB \&.Yc \(lBtail...\(rB \&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB \ \(lBbody...\(rB \&Yc \(lBtail...\(rB .Ed .Bl -column "MacroX" "CallableX" "ParsedX" "closed by XXXX" -offset indent .It Em Macro Ta Em Callable Ta Em Parsed Ta Em Scope .It Sx \&Ac Ta Yes Ta Yes Ta opened by Sx \&Ao .It Sx \&Ao Ta Yes Ta Yes Ta closed by Sx \&Ac .It Sx \&Bc Ta Yes Ta Yes Ta closed by Sx \&Bo .It Sx \&Bo Ta Yes Ta Yes Ta opened by Sx \&Bc .It Sx \&Brc Ta Yes Ta Yes Ta opened by Sx \&Bro .It Sx \&Bro Ta Yes Ta Yes Ta closed by Sx \&Brc .It Sx \&Dc Ta Yes Ta Yes Ta opened by Sx \&Do .It Sx \&Do Ta Yes Ta Yes Ta closed by Sx \&Dc .It Sx \&Ec Ta Yes Ta Yes Ta opened by Sx \&Eo .It Sx \&Eo Ta Yes Ta Yes Ta closed by Sx \&Ec .It Sx \&Fc Ta Yes Ta Yes Ta opened by Sx \&Fo .It Sx \&Fo Ta \&No Ta \&No Ta closed by Sx \&Fc .It Sx \&Oc Ta Yes Ta Yes Ta closed by Sx \&Oo .It Sx \&Oo Ta Yes Ta Yes Ta opened by Sx \&Oc .It Sx \&Pc Ta Yes Ta Yes Ta closed by Sx \&Po .It Sx \&Po Ta Yes Ta Yes Ta opened by Sx \&Pc .It Sx \&Qc Ta Yes Ta Yes Ta opened by Sx \&Oo .It Sx \&Qo Ta Yes Ta Yes Ta closed by Sx \&Oc .It Sx \&Re Ta \&No Ta \&No Ta opened by Sx \&Rs .It Sx \&Rs Ta \&No Ta \&No Ta closed by Sx \&Re .It Sx \&Sc Ta Yes Ta Yes Ta opened by Sx \&So .It Sx \&So Ta Yes Ta Yes Ta closed by Sx \&Sc .It Sx \&Xc Ta Yes Ta Yes Ta opened by Sx \&Xo .It Sx \&Xo Ta Yes Ta Yes Ta closed by Sx \&Xc .El .Ss Block partial-implicit Like block full-implicit, but with single-line scope closed by the end of the line. .Bd -literal -offset indent \&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBbody...\(rB \(lBres...\(rB .Ed .Bl -column "MacroX" "CallableX" "ParsedX" -offset indent .It Em Macro Ta Em Callable Ta Em Parsed .It Sx \&Aq Ta Yes Ta Yes .It Sx \&Bq Ta Yes Ta Yes .It Sx \&Brq Ta Yes Ta Yes .It Sx \&D1 Ta \&No Ta \&Yes .It Sx \&Dl Ta \&No Ta Yes .It Sx \&Dq Ta Yes Ta Yes .It Sx \&En Ta Yes Ta Yes .It Sx \&Op Ta Yes Ta Yes .It Sx \&Pq Ta Yes Ta Yes .It Sx \&Ql Ta Yes Ta Yes .It Sx \&Qq Ta Yes Ta Yes .It Sx \&Sq Ta Yes Ta Yes .It Sx \&Vt Ta Yes Ta Yes .El .Pp Note that the .Sx \&Vt macro is a .Sx Block partial-implicit only when invoked as the first macro in a .Em SYNOPSIS section line, else it is .Sx In-line . .Ss Special block macro The .Sx \&Ta macro can only be used below .Sx \&It in .Sx \&Bl Fl column lists. It delimits blocks representing table cells; these blocks have bodies, but no heads. .Bl -column "MacroX" "CallableX" "ParsedX" "closed by XXXX" -offset indent .It Em Macro Ta Em Callable Ta Em Parsed Ta Em Scope .It Sx \&Ta Ta Yes Ta Yes Ta closed by Sx \&Ta , Sx \&It .El .Ss In-line Closed by the end of the line, fixed argument lengths, and/or subsequent macros. In-line macros have only text children. If a number (or inequality) of arguments is .Pq n , then the macro accepts an arbitrary number of arguments. .Bd -literal -offset indent \&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBargs...\(rB \(lBres...\(rB \&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBargs...\(rB Yc... \&.Yo \(lB\-arg \(lBval...\(rB\(rB arg0 arg1 argN .Ed .Bl -column "MacroX" "CallableX" "ParsedX" "Arguments" -offset indent .It Em Macro Ta Em Callable Ta Em Parsed Ta Em Arguments .It Sx \&%A Ta \&No Ta \&No Ta >0 .It Sx \&%B Ta \&No Ta \&No Ta >0 .It Sx \&%C Ta \&No Ta \&No Ta >0 .It Sx \&%D Ta \&No Ta \&No Ta >0 .It Sx \&%I Ta \&No Ta \&No Ta >0 .It Sx \&%J Ta \&No Ta \&No Ta >0 .It Sx \&%N Ta \&No Ta \&No Ta >0 .It Sx \&%O Ta \&No Ta \&No Ta >0 .It Sx \&%P Ta \&No Ta \&No Ta >0 .It Sx \&%Q Ta \&No Ta \&No Ta >0 .It Sx \&%R Ta \&No Ta \&No Ta >0 .It Sx \&%T Ta \&No Ta \&No Ta >0 .It Sx \&%U Ta \&No Ta \&No Ta >0 .It Sx \&%V Ta \&No Ta \&No Ta >0 .It Sx \&Ad Ta Yes Ta Yes Ta >0 .It Sx \&An Ta Yes Ta Yes Ta >0 .It Sx \&Ap Ta Yes Ta Yes Ta 0 .It Sx \&Ar Ta Yes Ta Yes Ta n .It Sx \&At Ta Yes Ta Yes Ta 1 .It Sx \&Bsx Ta Yes Ta Yes Ta n .It Sx \&Bt Ta \&No Ta \&No Ta 0 .It Sx \&Bx Ta Yes Ta Yes Ta n .It Sx \&Cd Ta Yes Ta Yes Ta >0 .It Sx \&Cm Ta Yes Ta Yes Ta >0 .It Sx \&Db Ta \&No Ta \&No Ta 1 .It Sx \&Dd Ta \&No Ta \&No Ta n .It Sx \&Dt Ta \&No Ta \&No Ta n .It Sx \&Dv Ta Yes Ta Yes Ta >0 .It Sx \&Dx Ta Yes Ta Yes Ta n .It Sx \&Em Ta Yes Ta Yes Ta >0 .It Sx \&Er Ta Yes Ta Yes Ta >0 .It Sx \&Es Ta Yes Ta Yes Ta 2 .It Sx \&Ev Ta Yes Ta Yes Ta >0 .It Sx \&Ex Ta \&No Ta \&No Ta n .It Sx \&Fa Ta Yes Ta Yes Ta >0 .It Sx \&Fd Ta \&No Ta \&No Ta >0 .It Sx \&Fl Ta Yes Ta Yes Ta n .It Sx \&Fn Ta Yes Ta Yes Ta >0 .It Sx \&Fr Ta Yes Ta Yes Ta >0 .It Sx \&Ft Ta Yes Ta Yes Ta >0 .It Sx \&Fx Ta Yes Ta Yes Ta n .It Sx \&Hf Ta \&No Ta \&No Ta n .It Sx \&Ic Ta Yes Ta Yes Ta >0 .It Sx \&In Ta \&No Ta \&No Ta 1 .It Sx \&Lb Ta \&No Ta \&No Ta 1 .It Sx \&Li Ta Yes Ta Yes Ta >0 .It Sx \&Lk Ta Yes Ta Yes Ta >0 .It Sx \&Lp Ta \&No Ta \&No Ta 0 .It Sx \&Ms Ta Yes Ta Yes Ta >0 .It Sx \&Mt Ta Yes Ta Yes Ta >0 .It Sx \&Nm Ta Yes Ta Yes Ta n .It Sx \&No Ta Yes Ta Yes Ta 0 .It Sx \&Ns Ta Yes Ta Yes Ta 0 .It Sx \&Nx Ta Yes Ta Yes Ta n .It Sx \&Os Ta \&No Ta \&No Ta n .It Sx \&Ot Ta Yes Ta Yes Ta >0 .It Sx \&Ox Ta Yes Ta Yes Ta n .It Sx \&Pa Ta Yes Ta Yes Ta n .It Sx \&Pf Ta Yes Ta Yes Ta 1 .It Sx \&Pp Ta \&No Ta \&No Ta 0 .It Sx \&Rv Ta \&No Ta \&No Ta n .It Sx \&Sm Ta \&No Ta \&No Ta <2 .It Sx \&St Ta \&No Ta Yes Ta 1 .It Sx \&Sx Ta Yes Ta Yes Ta >0 .It Sx \&Sy Ta Yes Ta Yes Ta >0 .It Sx \&Tn Ta Yes Ta Yes Ta >0 .It Sx \&Ud Ta \&No Ta \&No Ta 0 .It Sx \&Ux Ta Yes Ta Yes Ta n .It Sx \&Va Ta Yes Ta Yes Ta n .It Sx \&Vt Ta Yes Ta Yes Ta >0 .It Sx \&Xr Ta Yes Ta Yes Ta 2 .El .Ss Delimiters When a macro argument consists of one single input character considered as a delimiter, the argument gets special handling. This does not apply when delimiters appear in arguments containing more than one character. Consequently, to prevent special handling and just handle it like any other argument, a delimiter can be escaped by prepending a zero-width space .Pq Sq \e& . In text lines, delimiters never need escaping, but may be used as normal punctuation. .Pp For many macros, when the leading arguments are opening delimiters, these delimiters are put before the macro scope, and when the trailing arguments are closing delimiters, these delimiters are put after the macro scope. Spacing is suppressed after opening delimiters and before closing delimiters. For example, .Pp .D1 Pf \. \&Aq "( [ word ] ) ." .Pp renders as: .Pp .D1 Aq ( [ word ] ) . .Pp Opening delimiters are: .Pp .Bl -tag -width Ds -offset indent -compact .It \&( left parenthesis .It \&[ left bracket .El .Pp Closing delimiters are: .Pp .Bl -tag -width Ds -offset indent -compact .It \&. period .It \&, comma .It \&: colon .It \&; semicolon .It \&) right parenthesis .It \&] right bracket .It \&? question mark .It \&! exclamation mark .El .Pp Note that even a period preceded by a backslash .Pq Sq \e.\& gets this special handling; use .Sq \e&. to prevent that. .Pp Many in-line macros interrupt their scope when they encounter delimiters, and resume their scope when more arguments follow that are not delimiters. For example, .Pp .D1 Pf \. \&Fl "a ( b | c \e*(Ba d ) e" .Pp renders as: .Pp .D1 Fl a ( b | c \*(Ba d ) e .Pp This applies to both opening and closing delimiters, and also to the middle delimiter, which does not suppress spacing: .Pp .Bl -tag -width Ds -offset indent -compact .It \&| vertical bar .El .Pp As a special case, the predefined string \e*(Ba is handled and rendered in the same way as a plain .Sq \&| character. Using this predefined string is not recommended in new manuals. .Ss Font handling In .Nm documents, usage of semantic markup is recommended in order to have proper fonts automatically selected; only when no fitting semantic markup is available, consider falling back to .Sx Physical markup macros. Whenever any .Nm macro switches the .Xr roff 7 font mode, it will automatically restore the previous font when exiting its scope. Manually switching the font using the .Xr roff 7 .Ql \ef font escape sequences is never required. .Sh COMPATIBILITY This section provides an incomplete list of compatibility issues between mandoc and GNU troff .Pq Qq groff . .Pp The following problematic behaviour is found in groff: .Pp .Bl -dash -compact .It .Sx \&Dd with non-standard arguments behaves very strangely. When there are three arguments, they are printed verbatim. Any other number of arguments is replaced by the current date, but without any arguments the string .Dq Epoch is printed. .It .Sx \&Lk only accepts a single link-name argument; the remainder is misformatted. .It .Sx \&Pa does not format its arguments when used in the FILES section under certain list types. .It .Sx \&Ta can only be called by other macros, but not at the beginning of a line. .It .Sx \&%C is not implemented (up to and including groff-1.22.2). .It .Sq \ef .Pq font face and .Sq \eF .Pq font family face .Sx Text Decoration escapes behave irregularly when specified within line-macro scopes. .It Negative scaling units return to prior lines. Instead, mandoc truncates them to zero. .El .Pp The following features are unimplemented in mandoc: .Pp .Bl -dash -compact .It .Sx \&Bd .Fl file Ar file is unsupported for security reasons. .It .Sx \&Bd .Fl filled does not adjust the right margin, but is an alias for .Sx \&Bd .Fl ragged . .It .Sx \&Bd .Fl literal does not use a literal font, but is an alias for .Sx \&Bd .Fl unfilled . .It .Sx \&Bd .Fl offset Cm center and .Fl offset Cm right don't work. Groff does not implement centered and flush-right rendering either, but produces large indentations. .El .Sh SEE ALSO .Xr man 1 , .Xr mandoc 1 , .Xr eqn 7 , .Xr man 7 , .Xr mandoc_char 7 , .Xr roff 7 , .Xr tbl 7 .Pp The web page -.Lk http://mdocml.bsd.lv/mdoc/ "extended documentation for the mdoc language" +.Lk http://mandoc.bsd.lv/mdoc/ "extended documentation for the mdoc language" provides a few tutorial-style pages for beginners, an extensive style guide for advanced authors, and an alphabetic index helping to choose the best macros for various kinds of content. .Sh HISTORY The .Nm language first appeared as a troff macro package in .Bx 4.4 . It was later significantly updated by Werner Lemberg and Ruslan Ermilov in groff-1.17. The standalone implementation that is part of the .Xr mandoc 1 utility written by Kristaps Dzonsons appeared in .Ox 4.6 . .Sh AUTHORS The .Nm reference was written by .An Kristaps Dzonsons Aq Mt kristaps@bsd.lv . Index: vendor/mdocml/dist/mdoc.c =================================================================== --- vendor/mdocml/dist/mdoc.c (revision 321806) +++ vendor/mdocml/dist/mdoc.c (revision 321807) @@ -1,443 +1,459 @@ -/* $Id: mdoc.c,v 1.266 2017/06/07 20:58:49 schwarze Exp $ */ +/* $Id: mdoc.c,v 1.267 2017/06/17 13:06:16 schwarze Exp $ */ /* * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons * Copyright (c) 2010, 2012-2017 Ingo Schwarze * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "config.h" #include #include #include #include #include #include #include #include #include "mandoc_aux.h" #include "mandoc.h" #include "roff.h" #include "mdoc.h" #include "libmandoc.h" #include "roff_int.h" #include "libmdoc.h" const char *const __mdoc_argnames[MDOC_ARG_MAX] = { "split", "nosplit", "ragged", "unfilled", "literal", "file", "offset", "bullet", "dash", "hyphen", "item", "enum", "tag", "diag", "hang", "ohang", "inset", "column", "width", "compact", "std", "filled", "words", "emphasis", "symbolic", "nested", "centered" }; const char * const *mdoc_argnames = __mdoc_argnames; static int mdoc_ptext(struct roff_man *, int, char *, int); static int mdoc_pmacro(struct roff_man *, int, char *, int); /* * Main parse routine. Parses a single line -- really just hands off to * the macro (mdoc_pmacro()) or text parser (mdoc_ptext()). */ int mdoc_parseln(struct roff_man *mdoc, int ln, char *buf, int offs) { if (mdoc->last->type != ROFFT_EQN || ln > mdoc->last->line) mdoc->flags |= MDOC_NEWLINE; /* * Let the roff nS register switch SYNOPSIS mode early, * such that the parser knows at all times * whether this mode is on or off. * Note that this mode is also switched by the Sh macro. */ if (roff_getreg(mdoc->roff, "nS")) mdoc->flags |= MDOC_SYNOPSIS; else mdoc->flags &= ~MDOC_SYNOPSIS; return roff_getcontrol(mdoc->roff, buf, &offs) ? mdoc_pmacro(mdoc, ln, buf, offs) : mdoc_ptext(mdoc, ln, buf, offs); } void mdoc_macro(MACRO_PROT_ARGS) { assert(tok >= MDOC_Dd && tok < MDOC_MAX); (*mdoc_macros[tok].fp)(mdoc, tok, line, ppos, pos, buf); } void mdoc_tail_alloc(struct roff_man *mdoc, int line, int pos, enum roff_tok tok) { struct roff_node *p; p = roff_node_alloc(mdoc, line, pos, ROFFT_TAIL, tok); roff_node_append(mdoc, p); mdoc->next = ROFF_NEXT_CHILD; } struct roff_node * mdoc_endbody_alloc(struct roff_man *mdoc, int line, int pos, enum roff_tok tok, struct roff_node *body) { struct roff_node *p; body->flags |= NODE_ENDED; body->parent->flags |= NODE_ENDED; p = roff_node_alloc(mdoc, line, pos, ROFFT_BODY, tok); p->body = body; p->norm = body->norm; p->end = ENDBODY_SPACE; roff_node_append(mdoc, p); mdoc->next = ROFF_NEXT_SIBLING; return p; } struct roff_node * mdoc_block_alloc(struct roff_man *mdoc, int line, int pos, enum roff_tok tok, struct mdoc_arg *args) { struct roff_node *p; p = roff_node_alloc(mdoc, line, pos, ROFFT_BLOCK, tok); p->args = args; if (p->args) (args->refcnt)++; switch (tok) { case MDOC_Bd: case MDOC_Bf: case MDOC_Bl: case MDOC_En: case MDOC_Rs: p->norm = mandoc_calloc(1, sizeof(union mdoc_data)); break; default: break; } roff_node_append(mdoc, p); mdoc->next = ROFF_NEXT_CHILD; return p; } void mdoc_elem_alloc(struct roff_man *mdoc, int line, int pos, enum roff_tok tok, struct mdoc_arg *args) { struct roff_node *p; p = roff_node_alloc(mdoc, line, pos, ROFFT_ELEM, tok); p->args = args; if (p->args) (args->refcnt)++; switch (tok) { case MDOC_An: p->norm = mandoc_calloc(1, sizeof(union mdoc_data)); break; default: break; } roff_node_append(mdoc, p); mdoc->next = ROFF_NEXT_CHILD; } void mdoc_node_relink(struct roff_man *mdoc, struct roff_node *p) { roff_node_unlink(mdoc, p); p->prev = p->next = NULL; roff_node_append(mdoc, p); } /* * Parse free-form text, that is, a line that does not begin with the * control character. */ static int mdoc_ptext(struct roff_man *mdoc, int line, char *buf, int offs) { struct roff_node *n; + const char *cp, *sp; char *c, *ws, *end; n = mdoc->last; /* * If a column list contains plain text, assume an implicit item * macro. This can happen one or more times at the beginning * of such a list, intermixed with non-It mdoc macros and with * nodes generated on the roff level, for example by tbl. */ if ((n->tok == MDOC_Bl && n->type == ROFFT_BODY && n->end == ENDBODY_NOT && n->norm->Bl.type == LIST_column) || (n->parent != NULL && n->parent->tok == MDOC_Bl && n->parent->norm->Bl.type == LIST_column)) { mdoc->flags |= MDOC_FREECOL; mdoc_macro(mdoc, MDOC_It, line, offs, &offs, buf); return 1; } /* * Search for the beginning of unescaped trailing whitespace (ws) * and for the first character not to be output (end). */ /* FIXME: replace with strcspn(). */ ws = NULL; for (c = end = buf + offs; *c; c++) { switch (*c) { case ' ': if (NULL == ws) ws = c; continue; case '\t': /* * Always warn about trailing tabs, * even outside literal context, * where they should be put on the next line. */ if (NULL == ws) ws = c; /* * Strip trailing tabs in literal context only; * outside, they affect the next line. */ if (MDOC_LITERAL & mdoc->flags) continue; break; case '\\': /* Skip the escaped character, too, if any. */ if (c[1]) c++; /* FALLTHROUGH */ default: ws = NULL; break; } end = c + 1; } *end = '\0'; if (ws) mandoc_msg(MANDOCERR_SPACE_EOL, mdoc->parse, line, (int)(ws-buf), NULL); + /* + * Blank lines are allowed in no-fill mode + * and cancel preceding \c, + * but add a single vertical space elsewhere. + */ + if (buf[offs] == '\0' && ! (mdoc->flags & MDOC_LITERAL)) { + switch (mdoc->last->type) { + case ROFFT_TEXT: + sp = mdoc->last->string; + cp = end = strchr(sp, '\0') - 2; + if (cp < sp || cp[0] != '\\' || cp[1] != 'c') + break; + while (cp > sp && cp[-1] == '\\') + cp--; + if ((end - cp) % 2) + break; + *end = '\0'; + return 1; + default: + break; + } mandoc_msg(MANDOCERR_FI_BLANK, mdoc->parse, line, (int)(c - buf), NULL); - - /* - * Insert a `sp' in the case of a blank line. Technically, - * blank lines aren't allowed, but enough manuals assume this - * behaviour that we want to work around it. - */ roff_elem_alloc(mdoc, line, offs, ROFF_sp); mdoc->last->flags |= NODE_VALID | NODE_ENDED; mdoc->next = ROFF_NEXT_SIBLING; return 1; } roff_word_alloc(mdoc, line, offs, buf+offs); if (mdoc->flags & MDOC_LITERAL) return 1; /* * End-of-sentence check. If the last character is an unescaped * EOS character, then flag the node as being the end of a * sentence. The front-end will know how to interpret this. */ assert(buf < end); if (mandoc_eos(buf+offs, (size_t)(end-buf-offs))) mdoc->last->flags |= NODE_EOS; for (c = buf + offs; c != NULL; c = strchr(c + 1, '.')) { if (c - buf < offs + 2) continue; if (end - c < 3) break; if (c[1] != ' ' || isalpha((unsigned char)c[-2]) == 0 || isalpha((unsigned char)c[-1]) == 0 || (c[-2] == 'n' && c[-1] == 'c') || (c[-2] == 'v' && c[-1] == 's')) continue; c += 2; if (*c == ' ') c++; if (*c == ' ') c++; if (isupper((unsigned char)(*c))) mandoc_msg(MANDOCERR_EOS, mdoc->parse, line, (int)(c - buf), NULL); } return 1; } /* * Parse a macro line, that is, a line beginning with the control * character. */ static int mdoc_pmacro(struct roff_man *mdoc, int ln, char *buf, int offs) { struct roff_node *n; const char *cp; size_t sz; enum roff_tok tok; int sv; /* Determine the line macro. */ sv = offs; tok = TOKEN_NONE; for (sz = 0; sz < 4 && strchr(" \t\\", buf[offs]) == NULL; sz++) offs++; if (sz == 2 || sz == 3) tok = roffhash_find(mdoc->mdocmac, buf + sv, sz); if (tok == TOKEN_NONE) { mandoc_msg(MANDOCERR_MACRO, mdoc->parse, ln, sv, buf + sv - 1); return 1; } /* Skip a leading escape sequence or tab. */ switch (buf[offs]) { case '\\': cp = buf + offs + 1; mandoc_escape(&cp, NULL, NULL); offs = cp - buf; break; case '\t': offs++; break; default: break; } /* Jump to the next non-whitespace word. */ while (buf[offs] == ' ') offs++; /* * Trailing whitespace. Note that tabs are allowed to be passed * into the parser as "text", so we only warn about spaces here. */ if ('\0' == buf[offs] && ' ' == buf[offs - 1]) mandoc_msg(MANDOCERR_SPACE_EOL, mdoc->parse, ln, offs - 1, NULL); /* * If an initial macro or a list invocation, divert directly * into macro processing. */ n = mdoc->last; if (n == NULL || tok == MDOC_It || tok == MDOC_El) { mdoc_macro(mdoc, tok, ln, sv, &offs, buf); return 1; } /* * If a column list contains a non-It macro, assume an implicit * item macro. This can happen one or more times at the * beginning of such a list, intermixed with text lines and * with nodes generated on the roff level, for example by tbl. */ if ((n->tok == MDOC_Bl && n->type == ROFFT_BODY && n->end == ENDBODY_NOT && n->norm->Bl.type == LIST_column) || (n->parent != NULL && n->parent->tok == MDOC_Bl && n->parent->norm->Bl.type == LIST_column)) { mdoc->flags |= MDOC_FREECOL; mdoc_macro(mdoc, MDOC_It, ln, sv, &sv, buf); return 1; } /* Normal processing of a macro. */ mdoc_macro(mdoc, tok, ln, sv, &offs, buf); /* In quick mode (for mandocdb), abort after the NAME section. */ if (mdoc->quick && MDOC_Sh == tok && SEC_NAME != mdoc->last->sec) return 2; return 1; } enum mdelim mdoc_isdelim(const char *p) { if ('\0' == p[0]) return DELIM_NONE; if ('\0' == p[1]) switch (p[0]) { case '(': case '[': return DELIM_OPEN; case '|': return DELIM_MIDDLE; case '.': case ',': case ';': case ':': case '?': case '!': case ')': case ']': return DELIM_CLOSE; default: return DELIM_NONE; } if ('\\' != p[0]) return DELIM_NONE; if (0 == strcmp(p + 1, ".")) return DELIM_CLOSE; if (0 == strcmp(p + 1, "fR|\\fP")) return DELIM_MIDDLE; return DELIM_NONE; } void mdoc_validate(struct roff_man *mdoc) { mdoc->last = mdoc->first; mdoc_node_validate(mdoc); mdoc_state_reset(mdoc); } Index: vendor/mdocml/dist/mdoc_html.c =================================================================== --- vendor/mdocml/dist/mdoc_html.c (revision 321806) +++ vendor/mdocml/dist/mdoc_html.c (revision 321807) @@ -1,1844 +1,1842 @@ -/* $Id: mdoc_html.c,v 1.289 2017/05/30 16:31:29 schwarze Exp $ */ +/* $Id: mdoc_html.c,v 1.294 2017/07/15 17:57:51 schwarze Exp $ */ /* * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons * Copyright (c) 2014, 2015, 2016, 2017 Ingo Schwarze * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "config.h" #include #include #include #include #include #include #include #include "mandoc_aux.h" +#include "mandoc.h" #include "roff.h" #include "mdoc.h" #include "out.h" #include "html.h" #include "main.h" #define INDENT 5 #define MDOC_ARGS const struct roff_meta *meta, \ struct roff_node *n, \ struct html *h #ifndef MIN #define MIN(a,b) ((/*CONSTCOND*/(a)<(b))?(a):(b)) #endif struct htmlmdoc { int (*pre)(MDOC_ARGS); void (*post)(MDOC_ARGS); }; static char *cond_id(const struct roff_node *); static void print_mdoc_head(MDOC_ARGS); static void print_mdoc_node(MDOC_ARGS); static void print_mdoc_nodelist(MDOC_ARGS); static void synopsis_pre(struct html *, const struct roff_node *); static void mdoc_root_post(MDOC_ARGS); static int mdoc_root_pre(MDOC_ARGS); static void mdoc__x_post(MDOC_ARGS); static int mdoc__x_pre(MDOC_ARGS); static int mdoc_ad_pre(MDOC_ARGS); static int mdoc_an_pre(MDOC_ARGS); static int mdoc_ap_pre(MDOC_ARGS); static int mdoc_ar_pre(MDOC_ARGS); static int mdoc_bd_pre(MDOC_ARGS); static int mdoc_bf_pre(MDOC_ARGS); static void mdoc_bk_post(MDOC_ARGS); static int mdoc_bk_pre(MDOC_ARGS); static int mdoc_bl_pre(MDOC_ARGS); static int mdoc_cd_pre(MDOC_ARGS); static int mdoc_cm_pre(MDOC_ARGS); static int mdoc_d1_pre(MDOC_ARGS); static int mdoc_dv_pre(MDOC_ARGS); static int mdoc_fa_pre(MDOC_ARGS); static int mdoc_fd_pre(MDOC_ARGS); static int mdoc_fl_pre(MDOC_ARGS); static int mdoc_fn_pre(MDOC_ARGS); static int mdoc_ft_pre(MDOC_ARGS); static int mdoc_em_pre(MDOC_ARGS); static void mdoc_eo_post(MDOC_ARGS); static int mdoc_eo_pre(MDOC_ARGS); static int mdoc_er_pre(MDOC_ARGS); static int mdoc_ev_pre(MDOC_ARGS); static int mdoc_ex_pre(MDOC_ARGS); static void mdoc_fo_post(MDOC_ARGS); static int mdoc_fo_pre(MDOC_ARGS); static int mdoc_ic_pre(MDOC_ARGS); static int mdoc_igndelim_pre(MDOC_ARGS); static int mdoc_in_pre(MDOC_ARGS); static int mdoc_it_pre(MDOC_ARGS); static int mdoc_lb_pre(MDOC_ARGS); static int mdoc_li_pre(MDOC_ARGS); static int mdoc_lk_pre(MDOC_ARGS); static int mdoc_mt_pre(MDOC_ARGS); static int mdoc_ms_pre(MDOC_ARGS); static int mdoc_nd_pre(MDOC_ARGS); static int mdoc_nm_pre(MDOC_ARGS); static int mdoc_no_pre(MDOC_ARGS); static int mdoc_ns_pre(MDOC_ARGS); static int mdoc_pa_pre(MDOC_ARGS); static void mdoc_pf_post(MDOC_ARGS); static int mdoc_pp_pre(MDOC_ARGS); static void mdoc_quote_post(MDOC_ARGS); static int mdoc_quote_pre(MDOC_ARGS); static int mdoc_rs_pre(MDOC_ARGS); static int mdoc_sh_pre(MDOC_ARGS); static int mdoc_skip_pre(MDOC_ARGS); static int mdoc_sm_pre(MDOC_ARGS); static int mdoc_ss_pre(MDOC_ARGS); static int mdoc_st_pre(MDOC_ARGS); static int mdoc_sx_pre(MDOC_ARGS); static int mdoc_sy_pre(MDOC_ARGS); static int mdoc_va_pre(MDOC_ARGS); static int mdoc_vt_pre(MDOC_ARGS); static int mdoc_xr_pre(MDOC_ARGS); static int mdoc_xx_pre(MDOC_ARGS); static const struct htmlmdoc __mdocs[MDOC_MAX - MDOC_Dd] = { {NULL, NULL}, /* Dd */ {NULL, NULL}, /* Dt */ {NULL, NULL}, /* Os */ {mdoc_sh_pre, NULL }, /* Sh */ {mdoc_ss_pre, NULL }, /* Ss */ {mdoc_pp_pre, NULL}, /* Pp */ {mdoc_d1_pre, NULL}, /* D1 */ {mdoc_d1_pre, NULL}, /* Dl */ {mdoc_bd_pre, NULL}, /* Bd */ {NULL, NULL}, /* Ed */ {mdoc_bl_pre, NULL}, /* Bl */ {NULL, NULL}, /* El */ {mdoc_it_pre, NULL}, /* It */ {mdoc_ad_pre, NULL}, /* Ad */ {mdoc_an_pre, NULL}, /* An */ {mdoc_ap_pre, NULL}, /* Ap */ {mdoc_ar_pre, NULL}, /* Ar */ {mdoc_cd_pre, NULL}, /* Cd */ {mdoc_cm_pre, NULL}, /* Cm */ {mdoc_dv_pre, NULL}, /* Dv */ {mdoc_er_pre, NULL}, /* Er */ {mdoc_ev_pre, NULL}, /* Ev */ {mdoc_ex_pre, NULL}, /* Ex */ {mdoc_fa_pre, NULL}, /* Fa */ {mdoc_fd_pre, NULL}, /* Fd */ {mdoc_fl_pre, NULL}, /* Fl */ {mdoc_fn_pre, NULL}, /* Fn */ {mdoc_ft_pre, NULL}, /* Ft */ {mdoc_ic_pre, NULL}, /* Ic */ {mdoc_in_pre, NULL}, /* In */ {mdoc_li_pre, NULL}, /* Li */ {mdoc_nd_pre, NULL}, /* Nd */ {mdoc_nm_pre, NULL}, /* Nm */ {mdoc_quote_pre, mdoc_quote_post}, /* Op */ {mdoc_ft_pre, NULL}, /* Ot */ {mdoc_pa_pre, NULL}, /* Pa */ {mdoc_ex_pre, NULL}, /* Rv */ {mdoc_st_pre, NULL}, /* St */ {mdoc_va_pre, NULL}, /* Va */ {mdoc_vt_pre, NULL}, /* Vt */ {mdoc_xr_pre, NULL}, /* Xr */ {mdoc__x_pre, mdoc__x_post}, /* %A */ {mdoc__x_pre, mdoc__x_post}, /* %B */ {mdoc__x_pre, mdoc__x_post}, /* %D */ {mdoc__x_pre, mdoc__x_post}, /* %I */ {mdoc__x_pre, mdoc__x_post}, /* %J */ {mdoc__x_pre, mdoc__x_post}, /* %N */ {mdoc__x_pre, mdoc__x_post}, /* %O */ {mdoc__x_pre, mdoc__x_post}, /* %P */ {mdoc__x_pre, mdoc__x_post}, /* %R */ {mdoc__x_pre, mdoc__x_post}, /* %T */ {mdoc__x_pre, mdoc__x_post}, /* %V */ {NULL, NULL}, /* Ac */ {mdoc_quote_pre, mdoc_quote_post}, /* Ao */ {mdoc_quote_pre, mdoc_quote_post}, /* Aq */ {mdoc_xx_pre, NULL}, /* At */ {NULL, NULL}, /* Bc */ {mdoc_bf_pre, NULL}, /* Bf */ {mdoc_quote_pre, mdoc_quote_post}, /* Bo */ {mdoc_quote_pre, mdoc_quote_post}, /* Bq */ {mdoc_xx_pre, NULL}, /* Bsx */ {mdoc_xx_pre, NULL}, /* Bx */ {mdoc_skip_pre, NULL}, /* Db */ {NULL, NULL}, /* Dc */ {mdoc_quote_pre, mdoc_quote_post}, /* Do */ {mdoc_quote_pre, mdoc_quote_post}, /* Dq */ {NULL, NULL}, /* Ec */ /* FIXME: no space */ {NULL, NULL}, /* Ef */ {mdoc_em_pre, NULL}, /* Em */ {mdoc_eo_pre, mdoc_eo_post}, /* Eo */ {mdoc_xx_pre, NULL}, /* Fx */ {mdoc_ms_pre, NULL}, /* Ms */ {mdoc_no_pre, NULL}, /* No */ {mdoc_ns_pre, NULL}, /* Ns */ {mdoc_xx_pre, NULL}, /* Nx */ {mdoc_xx_pre, NULL}, /* Ox */ {NULL, NULL}, /* Pc */ {mdoc_igndelim_pre, mdoc_pf_post}, /* Pf */ {mdoc_quote_pre, mdoc_quote_post}, /* Po */ {mdoc_quote_pre, mdoc_quote_post}, /* Pq */ {NULL, NULL}, /* Qc */ {mdoc_quote_pre, mdoc_quote_post}, /* Ql */ {mdoc_quote_pre, mdoc_quote_post}, /* Qo */ {mdoc_quote_pre, mdoc_quote_post}, /* Qq */ {NULL, NULL}, /* Re */ {mdoc_rs_pre, NULL}, /* Rs */ {NULL, NULL}, /* Sc */ {mdoc_quote_pre, mdoc_quote_post}, /* So */ {mdoc_quote_pre, mdoc_quote_post}, /* Sq */ {mdoc_sm_pre, NULL}, /* Sm */ {mdoc_sx_pre, NULL}, /* Sx */ {mdoc_sy_pre, NULL}, /* Sy */ {NULL, NULL}, /* Tn */ {mdoc_xx_pre, NULL}, /* Ux */ {NULL, NULL}, /* Xc */ {NULL, NULL}, /* Xo */ {mdoc_fo_pre, mdoc_fo_post}, /* Fo */ {NULL, NULL}, /* Fc */ {mdoc_quote_pre, mdoc_quote_post}, /* Oo */ {NULL, NULL}, /* Oc */ {mdoc_bk_pre, mdoc_bk_post}, /* Bk */ {NULL, NULL}, /* Ek */ {NULL, NULL}, /* Bt */ {NULL, NULL}, /* Hf */ {mdoc_em_pre, NULL}, /* Fr */ {NULL, NULL}, /* Ud */ {mdoc_lb_pre, NULL}, /* Lb */ {mdoc_pp_pre, NULL}, /* Lp */ {mdoc_lk_pre, NULL}, /* Lk */ {mdoc_mt_pre, NULL}, /* Mt */ {mdoc_quote_pre, mdoc_quote_post}, /* Brq */ {mdoc_quote_pre, mdoc_quote_post}, /* Bro */ {NULL, NULL}, /* Brc */ {mdoc__x_pre, mdoc__x_post}, /* %C */ {mdoc_skip_pre, NULL}, /* Es */ {mdoc_quote_pre, mdoc_quote_post}, /* En */ {mdoc_xx_pre, NULL}, /* Dx */ {mdoc__x_pre, mdoc__x_post}, /* %Q */ {mdoc__x_pre, mdoc__x_post}, /* %U */ {NULL, NULL}, /* Ta */ }; static const struct htmlmdoc *const mdocs = __mdocs - MDOC_Dd; /* * See the same function in mdoc_term.c for documentation. */ static void synopsis_pre(struct html *h, const struct roff_node *n) { if (NULL == n->prev || ! (NODE_SYNPRETTY & n->flags)) return; if (n->prev->tok == n->tok && MDOC_Fo != n->tok && MDOC_Ft != n->tok && MDOC_Fn != n->tok) { print_otag(h, TAG_BR, ""); return; } switch (n->prev->tok) { case MDOC_Fd: case MDOC_Fn: case MDOC_Fo: case MDOC_In: case MDOC_Vt: print_paragraph(h); break; case MDOC_Ft: if (MDOC_Fn != n->tok && MDOC_Fo != n->tok) { print_paragraph(h); break; } /* FALLTHROUGH */ default: print_otag(h, TAG_BR, ""); break; } } void html_mdoc(void *arg, const struct roff_man *mdoc) { struct html *h; struct tag *t; h = (struct html *)arg; if ((h->oflags & HTML_FRAGMENT) == 0) { print_gen_decls(h); print_otag(h, TAG_HTML, ""); t = print_otag(h, TAG_HEAD, ""); print_mdoc_head(&mdoc->meta, mdoc->first->child, h); print_tagq(h, t); print_otag(h, TAG_BODY, ""); } mdoc_root_pre(&mdoc->meta, mdoc->first->child, h); t = print_otag(h, TAG_DIV, "c", "manual-text"); print_mdoc_nodelist(&mdoc->meta, mdoc->first->child, h); print_tagq(h, t); mdoc_root_post(&mdoc->meta, mdoc->first->child, h); print_tagq(h, NULL); } static void print_mdoc_head(MDOC_ARGS) { char *cp; print_gen_head(h); if (meta->arch != NULL && meta->msec != NULL) mandoc_asprintf(&cp, "%s(%s) (%s)", meta->title, meta->msec, meta->arch); else if (meta->msec != NULL) mandoc_asprintf(&cp, "%s(%s)", meta->title, meta->msec); else if (meta->arch != NULL) mandoc_asprintf(&cp, "%s (%s)", meta->title, meta->arch); else cp = mandoc_strdup(meta->title); print_otag(h, TAG_TITLE, ""); print_text(h, cp); free(cp); } static void print_mdoc_nodelist(MDOC_ARGS) { while (n != NULL) { print_mdoc_node(meta, n, h); n = n->next; } } static void print_mdoc_node(MDOC_ARGS) { int child; struct tag *t; if (n->flags & NODE_NOPRT) return; child = 1; t = h->tag; n->flags &= ~NODE_ENDED; switch (n->type) { case ROFFT_TEXT: /* No tables in this mode... */ assert(NULL == h->tblt); /* * Make sure that if we're in a literal mode already * (i.e., within a
) don't print the newline.
 		 */
 		if (*n->string == ' ' && n->flags & NODE_LINE &&
 		    (h->flags & (HTML_LITERAL | HTML_NONEWLINE)) == 0)
 			print_otag(h, TAG_BR, "");
 		if (NODE_DELIMC & n->flags)
 			h->flags |= HTML_NOSPACE;
 		print_text(h, n->string);
 		if (NODE_DELIMO & n->flags)
 			h->flags |= HTML_NOSPACE;
 		return;
 	case ROFFT_EQN:
 		print_eqn(h, n->eqn);
 		break;
 	case ROFFT_TBL:
 		/*
 		 * This will take care of initialising all of the table
 		 * state data for the first table, then tearing it down
 		 * for the last one.
 		 */
 		print_tbl(h, n->span);
 		return;
 	default:
 		/*
 		 * Close out the current table, if it's open, and unset
 		 * the "meta" table state.  This will be reopened on the
 		 * next table element.
 		 */
 		if (h->tblt != NULL) {
 			print_tblclose(h);
 			t = h->tag;
 		}
 		assert(h->tblt == NULL);
 		if (n->tok < ROFF_MAX) {
 			roff_html_pre(h, n);
 			child = 0;
 			break;
 		}
 		assert(n->tok >= MDOC_Dd && n->tok < MDOC_MAX);
 		if (mdocs[n->tok].pre != NULL &&
 		    (n->end == ENDBODY_NOT || n->child != NULL))
 			child = (*mdocs[n->tok].pre)(meta, n, h);
 		break;
 	}
 
 	if (h->flags & HTML_KEEP && n->flags & NODE_LINE) {
 		h->flags &= ~HTML_KEEP;
 		h->flags |= HTML_PREKEEP;
 	}
 
 	if (child && n->child)
 		print_mdoc_nodelist(meta, n->child, h);
 
 	print_stagq(h, t);
 
 	switch (n->type) {
 	case ROFFT_EQN:
 		break;
 	default:
 		if (n->tok < ROFF_MAX ||
 		    mdocs[n->tok].post == NULL ||
 		    n->flags & NODE_ENDED)
 			break;
 		(*mdocs[n->tok].post)(meta, n, h);
 		if (n->end != ENDBODY_NOT)
 			n->body->flags |= NODE_ENDED;
 		break;
 	}
 }
 
 static void
 mdoc_root_post(MDOC_ARGS)
 {
 	struct tag	*t, *tt;
 
 	t = print_otag(h, TAG_TABLE, "c", "foot");
 	tt = print_otag(h, TAG_TR, "");
 
 	print_otag(h, TAG_TD, "c", "foot-date");
 	print_text(h, meta->date);
 	print_stagq(h, tt);
 
 	print_otag(h, TAG_TD, "c", "foot-os");
 	print_text(h, meta->os);
 	print_tagq(h, t);
 }
 
 static int
 mdoc_root_pre(MDOC_ARGS)
 {
 	struct tag	*t, *tt;
 	char		*volume, *title;
 
 	if (NULL == meta->arch)
 		volume = mandoc_strdup(meta->vol);
 	else
 		mandoc_asprintf(&volume, "%s (%s)",
 		    meta->vol, meta->arch);
 
 	if (NULL == meta->msec)
 		title = mandoc_strdup(meta->title);
 	else
 		mandoc_asprintf(&title, "%s(%s)",
 		    meta->title, meta->msec);
 
 	t = print_otag(h, TAG_TABLE, "c", "head");
 	tt = print_otag(h, TAG_TR, "");
 
 	print_otag(h, TAG_TD, "c", "head-ltitle");
 	print_text(h, title);
 	print_stagq(h, tt);
 
 	print_otag(h, TAG_TD, "c", "head-vol");
 	print_text(h, volume);
 	print_stagq(h, tt);
 
 	print_otag(h, TAG_TD, "c", "head-rtitle");
 	print_text(h, title);
 	print_tagq(h, t);
 
 	free(title);
 	free(volume);
 	return 1;
 }
 
 static char *
 cond_id(const struct roff_node *n)
 {
 	if (n->child != NULL &&
 	    n->child->type == ROFFT_TEXT &&
 	    (n->prev == NULL ||
 	     (n->prev->type == ROFFT_TEXT &&
 	      strcmp(n->prev->string, "|") == 0)) &&
 	    (n->parent->tok == MDOC_It ||
 	     (n->parent->tok == MDOC_Xo &&
 	      n->parent->parent->prev == NULL &&
 	      n->parent->parent->parent->tok == MDOC_It)))
 		return html_make_id(n);
 	return NULL;
 }
 
 static int
 mdoc_sh_pre(MDOC_ARGS)
 {
 	char	*id;
 
 	switch (n->type) {
 	case ROFFT_HEAD:
 		id = html_make_id(n);
 		print_otag(h, TAG_H1, "cTi", "Sh", id);
 		if (id != NULL)
 			print_otag(h, TAG_A, "chR", "selflink", id);
 		free(id);
 		break;
 	case ROFFT_BODY:
 		if (n->sec == SEC_AUTHORS)
 			h->flags &= ~(HTML_SPLIT|HTML_NOSPLIT);
 		break;
 	default:
 		break;
 	}
 	return 1;
 }
 
 static int
 mdoc_ss_pre(MDOC_ARGS)
 {
 	char	*id;
 
 	if (n->type != ROFFT_HEAD)
 		return 1;
 
 	id = html_make_id(n);
 	print_otag(h, TAG_H2, "cTi", "Ss", id);
 	if (id != NULL)
 		print_otag(h, TAG_A, "chR", "selflink", id);
 	free(id);
 	return 1;
 }
 
 static int
 mdoc_fl_pre(MDOC_ARGS)
 {
 	char	*id;
 
 	if ((id = cond_id(n)) != NULL)
 		print_otag(h, TAG_A, "chR", "selflink", id);
 	print_otag(h, TAG_B, "cTi", "Fl", id);
 	free(id);
 
 	print_text(h, "\\-");
 	if (!(n->child == NULL &&
 	    (n->next == NULL ||
 	     n->next->type == ROFFT_TEXT ||
 	     n->next->flags & NODE_LINE)))
 		h->flags |= HTML_NOSPACE;
 
 	return 1;
 }
 
 static int
 mdoc_cm_pre(MDOC_ARGS)
 {
 	char	*id;
 
 	if ((id = cond_id(n)) != NULL)
 		print_otag(h, TAG_A, "chR", "selflink", id);
 	print_otag(h, TAG_B, "cTi", "Cm", id);
 	free(id);
 	return 1;
 }
 
 static int
 mdoc_nd_pre(MDOC_ARGS)
 {
 	if (n->type != ROFFT_BODY)
 		return 1;
 
 	/* XXX: this tag in theory can contain block elements. */
 
 	print_text(h, "\\(em");
 	print_otag(h, TAG_SPAN, "cT", "Nd");
 	return 1;
 }
 
 static int
 mdoc_nm_pre(MDOC_ARGS)
 {
 	switch (n->type) {
 	case ROFFT_HEAD:
 		print_otag(h, TAG_TD, "");
 		/* FALLTHROUGH */
 	case ROFFT_ELEM:
 		print_otag(h, TAG_B, "cT", "Nm");
 		return 1;
 	case ROFFT_BODY:
 		print_otag(h, TAG_TD, "");
 		return 1;
 	default:
 		break;
 	}
 	synopsis_pre(h, n);
 	print_otag(h, TAG_TABLE, "c", "Nm");
 	print_otag(h, TAG_TR, "");
 	return 1;
 }
 
 static int
 mdoc_xr_pre(MDOC_ARGS)
 {
 	if (NULL == n->child)
 		return 0;
 
 	if (h->base_man)
 		print_otag(h, TAG_A, "cThM", "Xr",
 		    n->child->string, n->child->next == NULL ?
 		    NULL : n->child->next->string);
 	else
 		print_otag(h, TAG_A, "cT", "Xr");
 
 	n = n->child;
 	print_text(h, n->string);
 
 	if (NULL == (n = n->next))
 		return 0;
 
 	h->flags |= HTML_NOSPACE;
 	print_text(h, "(");
 	h->flags |= HTML_NOSPACE;
 	print_text(h, n->string);
 	h->flags |= HTML_NOSPACE;
 	print_text(h, ")");
 	return 0;
 }
 
 static int
 mdoc_ns_pre(MDOC_ARGS)
 {
 
 	if ( ! (NODE_LINE & n->flags))
 		h->flags |= HTML_NOSPACE;
 	return 1;
 }
 
 static int
 mdoc_ar_pre(MDOC_ARGS)
 {
 	print_otag(h, TAG_VAR, "cT", "Ar");
 	return 1;
 }
 
 static int
 mdoc_xx_pre(MDOC_ARGS)
 {
 	print_otag(h, TAG_SPAN, "c", "Ux");
 	return 1;
 }
 
 static int
 mdoc_it_pre(MDOC_ARGS)
 {
 	const struct roff_node	*bl;
 	struct tag		*t;
 	const char		*cattr;
 	enum mdoc_list		 type;
 
 	bl = n->parent;
 	while (bl->tok != MDOC_Bl)
 		bl = bl->parent;
 	type = bl->norm->Bl.type;
 
 	switch (type) {
 	case LIST_bullet:
 		cattr = "It-bullet";
 		break;
 	case LIST_dash:
 	case LIST_hyphen:
 		cattr = "It-dash";
 		break;
 	case LIST_item:
 		cattr = "It-item";
 		break;
 	case LIST_enum:
 		cattr = "It-enum";
 		break;
 	case LIST_diag:
 		cattr = "It-diag";
 		break;
 	case LIST_hang:
 		cattr = "It-hang";
 		break;
 	case LIST_inset:
 		cattr = "It-inset";
 		break;
 	case LIST_ohang:
 		cattr = "It-ohang";
 		break;
 	case LIST_tag:
 		cattr = "It-tag";
 		break;
 	case LIST_column:
 		cattr = "It-column";
 		break;
 	default:
 		break;
 	}
 
 	switch (type) {
 	case LIST_bullet:
 	case LIST_dash:
 	case LIST_hyphen:
 	case LIST_item:
 	case LIST_enum:
 		switch (n->type) {
 		case ROFFT_HEAD:
 			return 0;
 		case ROFFT_BODY:
-			if (bl->norm->Bl.comp)
-				print_otag(h, TAG_LI, "csvt", cattr, 0);
-			else
-				print_otag(h, TAG_LI, "c", cattr);
+			print_otag(h, TAG_LI, "c", cattr);
 			break;
 		default:
 			break;
 		}
 		break;
 	case LIST_diag:
 	case LIST_hang:
 	case LIST_inset:
 	case LIST_ohang:
 		switch (n->type) {
 		case ROFFT_HEAD:
-			if (bl->norm->Bl.comp)
-				print_otag(h, TAG_DT, "csvt", cattr, 0);
-			else
-				print_otag(h, TAG_DT, "c", cattr);
+			print_otag(h, TAG_DT, "c", cattr);
 			if (type == LIST_diag)
 				print_otag(h, TAG_B, "c", cattr);
 			break;
 		case ROFFT_BODY:
-			print_otag(h, TAG_DD, "cswl", cattr,
+			print_otag(h, TAG_DD, "csw*+l", cattr,
 			    bl->norm->Bl.width);
 			break;
 		default:
 			break;
 		}
 		break;
 	case LIST_tag:
 		switch (n->type) {
 		case ROFFT_HEAD:
 			if (h->style != NULL && !bl->norm->Bl.comp &&
 			    (n->parent->prev == NULL ||
 			     n->parent->prev->body == NULL ||
 			     n->parent->prev->body->child != NULL)) {
-				t = print_otag(h, TAG_DT, "csw+-l",
+				t = print_otag(h, TAG_DT, "csw*+-l",
 				    cattr, bl->norm->Bl.width);
 				print_text(h, "\\ ");
 				print_tagq(h, t);
 				t = print_otag(h, TAG_DD, "c", cattr);
 				print_text(h, "\\ ");
 				print_tagq(h, t);
 			}
-			print_otag(h, TAG_DT, "csw+-l", cattr,
+			print_otag(h, TAG_DT, "csw*+-l", cattr,
 			    bl->norm->Bl.width);
 			break;
 		case ROFFT_BODY:
 			if (n->child == NULL) {
 				print_otag(h, TAG_DD, "css?", cattr,
 				    "width", "auto");
 				print_text(h, "\\ ");
 			} else
 				print_otag(h, TAG_DD, "c", cattr);
 			break;
 		default:
 			break;
 		}
 		break;
 	case LIST_column:
 		switch (n->type) {
 		case ROFFT_HEAD:
 			break;
 		case ROFFT_BODY:
-			if (bl->norm->Bl.comp)
-				print_otag(h, TAG_TD, "csvt", cattr, 0);
-			else
-				print_otag(h, TAG_TD, "c", cattr);
+			print_otag(h, TAG_TD, "c", cattr);
 			break;
 		default:
 			print_otag(h, TAG_TR, "c", cattr);
 		}
 	default:
 		break;
 	}
 
 	return 1;
 }
 
 static int
 mdoc_bl_pre(MDOC_ARGS)
 {
+	char		 cattr[21];
 	struct tag	*t;
 	struct mdoc_bl	*bl;
-	const char	*cattr;
 	size_t		 i;
 	enum htmltag	 elemtype;
 
 	bl = &n->norm->Bl;
 
 	switch (n->type) {
 	case ROFFT_BODY:
 		return 1;
 
 	case ROFFT_HEAD:
 		if (bl->type != LIST_column || bl->ncols == 0)
 			return 0;
 
 		/*
 		 * For each column, print out the  tag with our
 		 * suggested width.  The last column gets min-width, as
 		 * in terminal mode it auto-sizes to the width of the
 		 * screen and we want to preserve that behaviour.
 		 */
 
 		t = print_otag(h, TAG_COLGROUP, "");
 		for (i = 0; i < bl->ncols - 1; i++)
 			print_otag(h, TAG_COL, "sw+w", bl->cols[i]);
 		print_otag(h, TAG_COL, "swW", bl->cols[i]);
 		print_tagq(h, t);
 		return 0;
 
 	default:
 		break;
 	}
 
 	switch (bl->type) {
 	case LIST_bullet:
 		elemtype = TAG_UL;
-		cattr = "Bl-bullet";
+		(void)strlcpy(cattr, "Bl-bullet", sizeof(cattr));
 		break;
 	case LIST_dash:
 	case LIST_hyphen:
 		elemtype = TAG_UL;
-		cattr = "Bl-dash";
+		(void)strlcpy(cattr, "Bl-dash", sizeof(cattr));
 		break;
 	case LIST_item:
 		elemtype = TAG_UL;
-		cattr = "Bl-item";
+		(void)strlcpy(cattr, "Bl-item", sizeof(cattr));
 		break;
 	case LIST_enum:
 		elemtype = TAG_OL;
-		cattr = "Bl-enum";
+		(void)strlcpy(cattr, "Bl-enum", sizeof(cattr));
 		break;
 	case LIST_diag:
 		elemtype = TAG_DL;
-		cattr = "Bl-diag";
+		(void)strlcpy(cattr, "Bl-diag", sizeof(cattr));
 		break;
 	case LIST_hang:
 		elemtype = TAG_DL;
-		cattr = "Bl-hang";
+		(void)strlcpy(cattr, "Bl-hang", sizeof(cattr));
 		break;
 	case LIST_inset:
 		elemtype = TAG_DL;
-		cattr = "Bl-inset";
+		(void)strlcpy(cattr, "Bl-inset", sizeof(cattr));
 		break;
 	case LIST_ohang:
 		elemtype = TAG_DL;
-		cattr = "Bl-ohang";
+		(void)strlcpy(cattr, "Bl-ohang", sizeof(cattr));
 		break;
 	case LIST_tag:
-		cattr = "Bl-tag";
 		if (bl->offs)
-			print_otag(h, TAG_DIV, "cswl", cattr, bl->offs);
-		print_otag(h, TAG_DL, "csw+l", cattr, bl->width);
+			print_otag(h, TAG_DIV, "cswl", "Bl-tag", bl->offs);
+		print_otag(h, TAG_DL, "csw*+l", bl->comp ?
+		    "Bl-tag Bl-compact" : "Bl-tag", bl->width);
 		return 1;
 	case LIST_column:
 		elemtype = TAG_TABLE;
-		cattr = "Bl-column";
+		(void)strlcpy(cattr, "Bl-column", sizeof(cattr));
 		break;
 	default:
 		abort();
 	}
+	if (bl->comp)
+		(void)strlcat(cattr, " Bl-compact", sizeof(cattr));
 	print_otag(h, elemtype, "cswl", cattr, bl->offs);
 	return 1;
 }
 
 static int
 mdoc_ex_pre(MDOC_ARGS)
 {
 	if (n->prev)
 		print_otag(h, TAG_BR, "");
 	return 1;
 }
 
 static int
 mdoc_st_pre(MDOC_ARGS)
 {
 	print_otag(h, TAG_SPAN, "cT", "St");
 	return 1;
 }
 
 static int
 mdoc_em_pre(MDOC_ARGS)
 {
 	print_otag(h, TAG_I, "cT", "Em");
 	return 1;
 }
 
 static int
 mdoc_d1_pre(MDOC_ARGS)
 {
 	if (n->type != ROFFT_BLOCK)
 		return 1;
 
 	print_otag(h, TAG_DIV, "c", "D1");
 
 	if (n->tok == MDOC_Dl)
 		print_otag(h, TAG_CODE, "c", "Li");
 
 	return 1;
 }
 
 static int
 mdoc_sx_pre(MDOC_ARGS)
 {
 	char	*id;
 
 	id = html_make_id(n);
 	print_otag(h, TAG_A, "cThR", "Sx", id);
 	free(id);
 	return 1;
 }
 
 static int
 mdoc_bd_pre(MDOC_ARGS)
 {
 	int			 comp, offs, sv;
 	struct roff_node	*nn;
 
 	if (n->type == ROFFT_HEAD)
 		return 0;
 
 	if (n->type == ROFFT_BLOCK) {
 		comp = n->norm->Bd.comp;
 		for (nn = n; nn && ! comp; nn = nn->parent) {
 			if (nn->type != ROFFT_BLOCK)
 				continue;
 			if (MDOC_Ss == nn->tok || MDOC_Sh == nn->tok)
 				comp = 1;
 			if (nn->prev)
 				break;
 		}
 		if ( ! comp)
 			print_paragraph(h);
 		return 1;
 	}
 
 	/* Handle the -offset argument. */
 
 	if (n->norm->Bd.offs == NULL ||
 	    ! strcmp(n->norm->Bd.offs, "left"))
 		offs = 0;
 	else if ( ! strcmp(n->norm->Bd.offs, "indent"))
 		offs = INDENT;
 	else if ( ! strcmp(n->norm->Bd.offs, "indent-two"))
 		offs = INDENT * 2;
 	else
 		offs = -1;
 
 	if (offs == -1)
 		print_otag(h, TAG_DIV, "cswl", "Bd", n->norm->Bd.offs);
 	else
 		print_otag(h, TAG_DIV, "cshl", "Bd", offs);
 
 	if (n->norm->Bd.type != DISP_unfilled &&
 	    n->norm->Bd.type != DISP_literal)
 		return 1;
 
 	print_otag(h, TAG_PRE, "c", "Li");
 
 	/* This can be recursive: save & set our literal state. */
 
 	sv = h->flags & HTML_LITERAL;
 	h->flags |= HTML_LITERAL;
 
 	for (nn = n->child; nn; nn = nn->next) {
 		print_mdoc_node(meta, nn, h);
 		/*
 		 * If the printed node flushes its own line, then we
 		 * needn't do it here as well.  This is hacky, but the
 		 * notion of selective eoln whitespace is pretty dumb
 		 * anyway, so don't sweat it.
 		 */
 		switch (nn->tok) {
 		case ROFF_br:
 		case ROFF_sp:
 		case MDOC_Sm:
 		case MDOC_Bl:
 		case MDOC_D1:
 		case MDOC_Dl:
 		case MDOC_Lp:
 		case MDOC_Pp:
 			continue;
 		default:
 			break;
 		}
 		if (h->flags & HTML_NONEWLINE ||
 		    (nn->next && ! (nn->next->flags & NODE_LINE)))
 			continue;
 		else if (nn->next)
 			print_text(h, "\n");
 
 		h->flags |= HTML_NOSPACE;
 	}
 
 	if (0 == sv)
 		h->flags &= ~HTML_LITERAL;
 
 	return 0;
 }
 
 static int
 mdoc_pa_pre(MDOC_ARGS)
 {
 	print_otag(h, TAG_I, "cT", "Pa");
 	return 1;
 }
 
 static int
 mdoc_ad_pre(MDOC_ARGS)
 {
 	print_otag(h, TAG_I, "c", "Ad");
 	return 1;
 }
 
 static int
 mdoc_an_pre(MDOC_ARGS)
 {
 	if (n->norm->An.auth == AUTH_split) {
 		h->flags &= ~HTML_NOSPLIT;
 		h->flags |= HTML_SPLIT;
 		return 0;
 	}
 	if (n->norm->An.auth == AUTH_nosplit) {
 		h->flags &= ~HTML_SPLIT;
 		h->flags |= HTML_NOSPLIT;
 		return 0;
 	}
 
 	if (h->flags & HTML_SPLIT)
 		print_otag(h, TAG_BR, "");
 
 	if (n->sec == SEC_AUTHORS && ! (h->flags & HTML_NOSPLIT))
 		h->flags |= HTML_SPLIT;
 
 	print_otag(h, TAG_SPAN, "cT", "An");
 	return 1;
 }
 
 static int
 mdoc_cd_pre(MDOC_ARGS)
 {
 	synopsis_pre(h, n);
 	print_otag(h, TAG_B, "cT", "Cd");
 	return 1;
 }
 
 static int
 mdoc_dv_pre(MDOC_ARGS)
 {
 	char	*id;
 
 	if ((id = cond_id(n)) != NULL)
 		print_otag(h, TAG_A, "chR", "selflink", id);
 	print_otag(h, TAG_CODE, "cTi", "Dv", id);
 	free(id);
 	return 1;
 }
 
 static int
 mdoc_ev_pre(MDOC_ARGS)
 {
 	char	*id;
 
 	if ((id = cond_id(n)) != NULL)
 		print_otag(h, TAG_A, "chR", "selflink", id);
 	print_otag(h, TAG_CODE, "cTi", "Ev", id);
 	free(id);
 	return 1;
 }
 
 static int
 mdoc_er_pre(MDOC_ARGS)
 {
 	char	*id;
 
 	id = n->sec == SEC_ERRORS &&
 	    (n->parent->tok == MDOC_It ||
 	     (n->parent->tok == MDOC_Bq &&
 	      n->parent->parent->parent->tok == MDOC_It)) ?
 	    html_make_id(n) : NULL;
 
 	if (id != NULL)
 		print_otag(h, TAG_A, "chR", "selflink", id);
 	print_otag(h, TAG_CODE, "cTi", "Er", id);
 	free(id);
 	return 1;
 }
 
 static int
 mdoc_fa_pre(MDOC_ARGS)
 {
 	const struct roff_node	*nn;
 	struct tag		*t;
 
 	if (n->parent->tok != MDOC_Fo) {
 		print_otag(h, TAG_VAR, "cT", "Fa");
 		return 1;
 	}
 
 	for (nn = n->child; nn; nn = nn->next) {
 		t = print_otag(h, TAG_VAR, "cT", "Fa");
 		print_text(h, nn->string);
 		print_tagq(h, t);
 		if (nn->next) {
 			h->flags |= HTML_NOSPACE;
 			print_text(h, ",");
 		}
 	}
 
 	if (n->child && n->next && n->next->tok == MDOC_Fa) {
 		h->flags |= HTML_NOSPACE;
 		print_text(h, ",");
 	}
 
 	return 0;
 }
 
 static int
 mdoc_fd_pre(MDOC_ARGS)
 {
 	struct tag	*t;
 	char		*buf, *cp;
 
 	synopsis_pre(h, n);
 
 	if (NULL == (n = n->child))
 		return 0;
 
 	assert(n->type == ROFFT_TEXT);
 
 	if (strcmp(n->string, "#include")) {
 		print_otag(h, TAG_B, "cT", "Fd");
 		return 1;
 	}
 
 	print_otag(h, TAG_B, "cT", "In");
 	print_text(h, n->string);
 
 	if (NULL != (n = n->next)) {
 		assert(n->type == ROFFT_TEXT);
 
 		if (h->base_includes) {
 			cp = n->string;
 			if (*cp == '<' || *cp == '"')
 				cp++;
 			buf = mandoc_strdup(cp);
 			cp = strchr(buf, '\0') - 1;
 			if (cp >= buf && (*cp == '>' || *cp == '"'))
 				*cp = '\0';
 			t = print_otag(h, TAG_A, "cThI", "In", buf);
 			free(buf);
 		} else
 			t = print_otag(h, TAG_A, "cT", "In");
 
 		print_text(h, n->string);
 		print_tagq(h, t);
 
 		n = n->next;
 	}
 
 	for ( ; n; n = n->next) {
 		assert(n->type == ROFFT_TEXT);
 		print_text(h, n->string);
 	}
 
 	return 0;
 }
 
 static int
 mdoc_vt_pre(MDOC_ARGS)
 {
 	if (n->type == ROFFT_BLOCK) {
 		synopsis_pre(h, n);
 		return 1;
 	} else if (n->type == ROFFT_ELEM) {
 		synopsis_pre(h, n);
 	} else if (n->type == ROFFT_HEAD)
 		return 0;
 
 	print_otag(h, TAG_VAR, "cT", "Vt");
 	return 1;
 }
 
 static int
 mdoc_ft_pre(MDOC_ARGS)
 {
 	synopsis_pre(h, n);
 	print_otag(h, TAG_VAR, "cT", "Ft");
 	return 1;
 }
 
 static int
 mdoc_fn_pre(MDOC_ARGS)
 {
 	struct tag	*t;
 	char		 nbuf[BUFSIZ];
 	const char	*sp, *ep;
 	int		 sz, pretty;
 
 	pretty = NODE_SYNPRETTY & n->flags;
 	synopsis_pre(h, n);
 
 	/* Split apart into type and name. */
 	assert(n->child->string);
 	sp = n->child->string;
 
 	ep = strchr(sp, ' ');
 	if (NULL != ep) {
 		t = print_otag(h, TAG_VAR, "cT", "Ft");
 
 		while (ep) {
 			sz = MIN((int)(ep - sp), BUFSIZ - 1);
 			(void)memcpy(nbuf, sp, (size_t)sz);
 			nbuf[sz] = '\0';
 			print_text(h, nbuf);
 			sp = ++ep;
 			ep = strchr(sp, ' ');
 		}
 		print_tagq(h, t);
 	}
 
 	t = print_otag(h, TAG_B, "cT", "Fn");
 
 	if (sp)
 		print_text(h, sp);
 
 	print_tagq(h, t);
 
 	h->flags |= HTML_NOSPACE;
 	print_text(h, "(");
 	h->flags |= HTML_NOSPACE;
 
 	for (n = n->child->next; n; n = n->next) {
 		if (NODE_SYNPRETTY & n->flags)
 			t = print_otag(h, TAG_VAR, "cTss?", "Fa",
 			    "white-space", "nowrap");
 		else
 			t = print_otag(h, TAG_VAR, "cT", "Fa");
 		print_text(h, n->string);
 		print_tagq(h, t);
 		if (n->next) {
 			h->flags |= HTML_NOSPACE;
 			print_text(h, ",");
 		}
 	}
 
 	h->flags |= HTML_NOSPACE;
 	print_text(h, ")");
 
 	if (pretty) {
 		h->flags |= HTML_NOSPACE;
 		print_text(h, ";");
 	}
 
 	return 0;
 }
 
 static int
 mdoc_sm_pre(MDOC_ARGS)
 {
 
 	if (NULL == n->child)
 		h->flags ^= HTML_NONOSPACE;
 	else if (0 == strcmp("on", n->child->string))
 		h->flags &= ~HTML_NONOSPACE;
 	else
 		h->flags |= HTML_NONOSPACE;
 
 	if ( ! (HTML_NONOSPACE & h->flags))
 		h->flags &= ~HTML_NOSPACE;
 
 	return 0;
 }
 
 static int
 mdoc_skip_pre(MDOC_ARGS)
 {
 
 	return 0;
 }
 
 static int
 mdoc_pp_pre(MDOC_ARGS)
 {
 
 	print_paragraph(h);
 	return 0;
 }
 
 static int
 mdoc_lk_pre(MDOC_ARGS)
 {
 	const struct roff_node *link, *descr, *punct;
 	struct tag	*t;
 
 	if ((link = n->child) == NULL)
 		return 0;
 
 	/* Find beginning of trailing punctuation. */
 	punct = n->last;
 	while (punct != link && punct->flags & NODE_DELIMC)
 		punct = punct->prev;
 	punct = punct->next;
 
 	/* Link target and link text. */
+	descr = link->next;
+	if (descr == punct)
+		descr = link;  /* no text */
 	t = print_otag(h, TAG_A, "cTh", "Lk", link->string);
-	for (descr = link->next; descr != punct; descr = descr->next) {
+	do {
 		if (descr->flags & (NODE_DELIMC | NODE_DELIMO))
 			h->flags |= HTML_NOSPACE;
 		print_text(h, descr->string);
-	}
+		descr = descr->next;
+	} while (descr != punct);
 	print_tagq(h, t);
 
 	/* Trailing punctuation. */
 	while (punct != NULL) {
 		h->flags |= HTML_NOSPACE;
 		print_text(h, punct->string);
 		punct = punct->next;
 	}
 	return 0;
 }
 
 static int
 mdoc_mt_pre(MDOC_ARGS)
 {
 	struct tag	*t;
 	char		*cp;
 
 	for (n = n->child; n; n = n->next) {
 		assert(n->type == ROFFT_TEXT);
 
 		mandoc_asprintf(&cp, "mailto:%s", n->string);
 		t = print_otag(h, TAG_A, "cTh", "Mt", cp);
 		print_text(h, n->string);
 		print_tagq(h, t);
 		free(cp);
 	}
 
 	return 0;
 }
 
 static int
 mdoc_fo_pre(MDOC_ARGS)
 {
 	struct tag	*t;
 
 	if (n->type == ROFFT_BODY) {
 		h->flags |= HTML_NOSPACE;
 		print_text(h, "(");
 		h->flags |= HTML_NOSPACE;
 		return 1;
 	} else if (n->type == ROFFT_BLOCK) {
 		synopsis_pre(h, n);
 		return 1;
 	}
 
 	if (n->child == NULL)
 		return 0;
 
 	assert(n->child->string);
 	t = print_otag(h, TAG_B, "cT", "Fn");
 	print_text(h, n->child->string);
 	print_tagq(h, t);
 	return 0;
 }
 
 static void
 mdoc_fo_post(MDOC_ARGS)
 {
 
 	if (n->type != ROFFT_BODY)
 		return;
 	h->flags |= HTML_NOSPACE;
 	print_text(h, ")");
 	h->flags |= HTML_NOSPACE;
 	print_text(h, ";");
 }
 
 static int
 mdoc_in_pre(MDOC_ARGS)
 {
 	struct tag	*t;
 
 	synopsis_pre(h, n);
 	print_otag(h, TAG_B, "cT", "In");
 
 	/*
 	 * The first argument of the `In' gets special treatment as
 	 * being a linked value.  Subsequent values are printed
 	 * afterward.  groff does similarly.  This also handles the case
 	 * of no children.
 	 */
 
 	if (NODE_SYNPRETTY & n->flags && NODE_LINE & n->flags)
 		print_text(h, "#include");
 
 	print_text(h, "<");
 	h->flags |= HTML_NOSPACE;
 
 	if (NULL != (n = n->child)) {
 		assert(n->type == ROFFT_TEXT);
 
 		if (h->base_includes)
 			t = print_otag(h, TAG_A, "cThI", "In", n->string);
 		else
 			t = print_otag(h, TAG_A, "cT", "In");
 		print_text(h, n->string);
 		print_tagq(h, t);
 
 		n = n->next;
 	}
 
 	h->flags |= HTML_NOSPACE;
 	print_text(h, ">");
 
 	for ( ; n; n = n->next) {
 		assert(n->type == ROFFT_TEXT);
 		print_text(h, n->string);
 	}
 
 	return 0;
 }
 
 static int
 mdoc_ic_pre(MDOC_ARGS)
 {
 	char	*id;
 
 	if ((id = cond_id(n)) != NULL)
 		print_otag(h, TAG_A, "chR", "selflink", id);
 	print_otag(h, TAG_B, "cTi", "Ic", id);
 	free(id);
 	return 1;
 }
 
 static int
 mdoc_va_pre(MDOC_ARGS)
 {
 	print_otag(h, TAG_VAR, "cT", "Va");
 	return 1;
 }
 
 static int
 mdoc_ap_pre(MDOC_ARGS)
 {
 
 	h->flags |= HTML_NOSPACE;
 	print_text(h, "\\(aq");
 	h->flags |= HTML_NOSPACE;
 	return 1;
 }
 
 static int
 mdoc_bf_pre(MDOC_ARGS)
 {
 	const char	*cattr;
 
 	if (n->type == ROFFT_HEAD)
 		return 0;
 	else if (n->type != ROFFT_BODY)
 		return 1;
 
 	if (FONT_Em == n->norm->Bf.font)
 		cattr = "Em";
 	else if (FONT_Sy == n->norm->Bf.font)
 		cattr = "Sy";
 	else if (FONT_Li == n->norm->Bf.font)
 		cattr = "Li";
 	else
 		cattr = "No";
 
 	/*
 	 * We want this to be inline-formatted, but needs to be div to
 	 * accept block children.
 	 */
 
 	print_otag(h, TAG_DIV, "css?hl", cattr, "display", "inline", 1);
 	return 1;
 }
 
 static int
 mdoc_ms_pre(MDOC_ARGS)
 {
 	char *id;
 
 	if ((id = cond_id(n)) != NULL)
 		print_otag(h, TAG_A, "chR", "selflink", id);
 	print_otag(h, TAG_B, "cTi", "Ms", id);
 	free(id);
 	return 1;
 }
 
 static int
 mdoc_igndelim_pre(MDOC_ARGS)
 {
 
 	h->flags |= HTML_IGNDELIM;
 	return 1;
 }
 
 static void
 mdoc_pf_post(MDOC_ARGS)
 {
 
 	if ( ! (n->next == NULL || n->next->flags & NODE_LINE))
 		h->flags |= HTML_NOSPACE;
 }
 
 static int
 mdoc_rs_pre(MDOC_ARGS)
 {
 	if (n->type != ROFFT_BLOCK)
 		return 1;
 
 	if (n->prev && SEC_SEE_ALSO == n->sec)
 		print_paragraph(h);
 
 	print_otag(h, TAG_CITE, "cT", "Rs");
 	return 1;
 }
 
 static int
 mdoc_no_pre(MDOC_ARGS)
 {
 	char *id;
 
 	if ((id = cond_id(n)) != NULL)
 		print_otag(h, TAG_A, "chR", "selflink", id);
 	print_otag(h, TAG_SPAN, "ci", "No", id);
 	free(id);
 	return 1;
 }
 
 static int
 mdoc_li_pre(MDOC_ARGS)
 {
 	char	*id;
 
 	if ((id = cond_id(n)) != NULL)
 		print_otag(h, TAG_A, "chR", "selflink", id);
 	print_otag(h, TAG_CODE, "ci", "Li", id);
 	free(id);
 	return 1;
 }
 
 static int
 mdoc_sy_pre(MDOC_ARGS)
 {
 	print_otag(h, TAG_B, "cT", "Sy");
 	return 1;
 }
 
 static int
 mdoc_lb_pre(MDOC_ARGS)
 {
 	if (SEC_LIBRARY == n->sec && NODE_LINE & n->flags && n->prev)
 		print_otag(h, TAG_BR, "");
 
 	print_otag(h, TAG_SPAN, "cT", "Lb");
 	return 1;
 }
 
 static int
 mdoc__x_pre(MDOC_ARGS)
 {
 	const char	*cattr;
 	enum htmltag	 t;
 
 	t = TAG_SPAN;
 
 	switch (n->tok) {
 	case MDOC__A:
 		cattr = "RsA";
 		if (n->prev && MDOC__A == n->prev->tok)
 			if (NULL == n->next || MDOC__A != n->next->tok)
 				print_text(h, "and");
 		break;
 	case MDOC__B:
 		t = TAG_I;
 		cattr = "RsB";
 		break;
 	case MDOC__C:
 		cattr = "RsC";
 		break;
 	case MDOC__D:
 		cattr = "RsD";
 		break;
 	case MDOC__I:
 		t = TAG_I;
 		cattr = "RsI";
 		break;
 	case MDOC__J:
 		t = TAG_I;
 		cattr = "RsJ";
 		break;
 	case MDOC__N:
 		cattr = "RsN";
 		break;
 	case MDOC__O:
 		cattr = "RsO";
 		break;
 	case MDOC__P:
 		cattr = "RsP";
 		break;
 	case MDOC__Q:
 		cattr = "RsQ";
 		break;
 	case MDOC__R:
 		cattr = "RsR";
 		break;
 	case MDOC__T:
 		cattr = "RsT";
 		break;
 	case MDOC__U:
 		print_otag(h, TAG_A, "ch", "RsU", n->child->string);
 		return 1;
 	case MDOC__V:
 		cattr = "RsV";
 		break;
 	default:
 		abort();
 	}
 
 	print_otag(h, t, "c", cattr);
 	return 1;
 }
 
 static void
 mdoc__x_post(MDOC_ARGS)
 {
 
 	if (MDOC__A == n->tok && n->next && MDOC__A == n->next->tok)
 		if (NULL == n->next->next || MDOC__A != n->next->next->tok)
 			if (NULL == n->prev || MDOC__A != n->prev->tok)
 				return;
 
 	/* TODO: %U */
 
 	if (NULL == n->parent || MDOC_Rs != n->parent->tok)
 		return;
 
 	h->flags |= HTML_NOSPACE;
 	print_text(h, n->next ? "," : ".");
 }
 
 static int
 mdoc_bk_pre(MDOC_ARGS)
 {
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		break;
 	case ROFFT_HEAD:
 		return 0;
 	case ROFFT_BODY:
 		if (n->parent->args != NULL || n->prev->child == NULL)
 			h->flags |= HTML_PREKEEP;
 		break;
 	default:
 		abort();
 	}
 
 	return 1;
 }
 
 static void
 mdoc_bk_post(MDOC_ARGS)
 {
 
 	if (n->type == ROFFT_BODY)
 		h->flags &= ~(HTML_KEEP | HTML_PREKEEP);
 }
 
 static int
 mdoc_quote_pre(MDOC_ARGS)
 {
 	if (n->type != ROFFT_BODY)
 		return 1;
 
 	switch (n->tok) {
 	case MDOC_Ao:
 	case MDOC_Aq:
 		print_text(h, n->child != NULL && n->child->next == NULL &&
 		    n->child->tok == MDOC_Mt ?  "<" : "\\(la");
 		break;
 	case MDOC_Bro:
 	case MDOC_Brq:
 		print_text(h, "\\(lC");
 		break;
 	case MDOC_Bo:
 	case MDOC_Bq:
 		print_text(h, "\\(lB");
 		break;
 	case MDOC_Oo:
 	case MDOC_Op:
 		print_text(h, "\\(lB");
 		h->flags |= HTML_NOSPACE;
 		print_otag(h, TAG_SPAN, "c", "Op");
 		break;
 	case MDOC_En:
 		if (NULL == n->norm->Es ||
 		    NULL == n->norm->Es->child)
 			return 1;
 		print_text(h, n->norm->Es->child->string);
 		break;
 	case MDOC_Do:
 	case MDOC_Dq:
 	case MDOC_Qo:
 	case MDOC_Qq:
 		print_text(h, "\\(lq");
 		break;
 	case MDOC_Po:
 	case MDOC_Pq:
 		print_text(h, "(");
 		break;
 	case MDOC_Ql:
 		print_text(h, "\\(oq");
 		h->flags |= HTML_NOSPACE;
 		print_otag(h, TAG_CODE, "c", "Li");
 		break;
 	case MDOC_So:
 	case MDOC_Sq:
 		print_text(h, "\\(oq");
 		break;
 	default:
 		abort();
 	}
 
 	h->flags |= HTML_NOSPACE;
 	return 1;
 }
 
 static void
 mdoc_quote_post(MDOC_ARGS)
 {
 
 	if (n->type != ROFFT_BODY && n->type != ROFFT_ELEM)
 		return;
 
 	h->flags |= HTML_NOSPACE;
 
 	switch (n->tok) {
 	case MDOC_Ao:
 	case MDOC_Aq:
 		print_text(h, n->child != NULL && n->child->next == NULL &&
 		    n->child->tok == MDOC_Mt ?  ">" : "\\(ra");
 		break;
 	case MDOC_Bro:
 	case MDOC_Brq:
 		print_text(h, "\\(rC");
 		break;
 	case MDOC_Oo:
 	case MDOC_Op:
 	case MDOC_Bo:
 	case MDOC_Bq:
 		print_text(h, "\\(rB");
 		break;
 	case MDOC_En:
 		if (n->norm->Es == NULL ||
 		    n->norm->Es->child == NULL ||
 		    n->norm->Es->child->next == NULL)
 			h->flags &= ~HTML_NOSPACE;
 		else
 			print_text(h, n->norm->Es->child->next->string);
 		break;
 	case MDOC_Qo:
 	case MDOC_Qq:
 	case MDOC_Do:
 	case MDOC_Dq:
 		print_text(h, "\\(rq");
 		break;
 	case MDOC_Po:
 	case MDOC_Pq:
 		print_text(h, ")");
 		break;
 	case MDOC_Ql:
 	case MDOC_So:
 	case MDOC_Sq:
 		print_text(h, "\\(cq");
 		break;
 	default:
 		abort();
 	}
 }
 
 static int
 mdoc_eo_pre(MDOC_ARGS)
 {
 
 	if (n->type != ROFFT_BODY)
 		return 1;
 
 	if (n->end == ENDBODY_NOT &&
 	    n->parent->head->child == NULL &&
 	    n->child != NULL &&
 	    n->child->end != ENDBODY_NOT)
 		print_text(h, "\\&");
 	else if (n->end != ENDBODY_NOT ? n->child != NULL :
 	    n->parent->head->child != NULL && (n->child != NULL ||
 	    (n->parent->tail != NULL && n->parent->tail->child != NULL)))
 		h->flags |= HTML_NOSPACE;
 	return 1;
 }
 
 static void
 mdoc_eo_post(MDOC_ARGS)
 {
 	int	 body, tail;
 
 	if (n->type != ROFFT_BODY)
 		return;
 
 	if (n->end != ENDBODY_NOT) {
 		h->flags &= ~HTML_NOSPACE;
 		return;
 	}
 
 	body = n->child != NULL || n->parent->head->child != NULL;
 	tail = n->parent->tail != NULL && n->parent->tail->child != NULL;
 
 	if (body && tail)
 		h->flags |= HTML_NOSPACE;
 	else if ( ! tail)
 		h->flags &= ~HTML_NOSPACE;
 }
Index: vendor/mdocml/dist/mdoc_man.c
===================================================================
--- vendor/mdocml/dist/mdoc_man.c	(revision 321806)
+++ vendor/mdocml/dist/mdoc_man.c	(revision 321807)
@@ -1,1793 +1,1804 @@
-/*	$Id: mdoc_man.c,v 1.119 2017/06/08 12:54:58 schwarze Exp $ */
+/*	$Id: mdoc_man.c,v 1.122 2017/06/14 22:51:25 schwarze Exp $ */
 /*
  * Copyright (c) 2011-2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc_aux.h"
 #include "mandoc.h"
 #include "roff.h"
 #include "mdoc.h"
 #include "man.h"
 #include "out.h"
 #include "main.h"
 
 #define	DECL_ARGS const struct roff_meta *meta, struct roff_node *n
 
 typedef	int	(*int_fp)(DECL_ARGS);
 typedef	void	(*void_fp)(DECL_ARGS);
 
 struct	manact {
 	int_fp		  cond; /* DON'T run actions */
 	int_fp		  pre; /* pre-node action */
 	void_fp		  post; /* post-node action */
 	const char	 *prefix; /* pre-node string constant */
 	const char	 *suffix; /* post-node string constant */
 };
 
 static	int	  cond_body(DECL_ARGS);
 static	int	  cond_head(DECL_ARGS);
 static  void	  font_push(char);
 static	void	  font_pop(void);
 static	int	  man_strlen(const char *);
 static	void	  mid_it(void);
 static	void	  post__t(DECL_ARGS);
 static	void	  post_aq(DECL_ARGS);
 static	void	  post_bd(DECL_ARGS);
 static	void	  post_bf(DECL_ARGS);
 static	void	  post_bk(DECL_ARGS);
 static	void	  post_bl(DECL_ARGS);
 static	void	  post_dl(DECL_ARGS);
 static	void	  post_en(DECL_ARGS);
 static	void	  post_enc(DECL_ARGS);
 static	void	  post_eo(DECL_ARGS);
 static	void	  post_fa(DECL_ARGS);
 static	void	  post_fd(DECL_ARGS);
 static	void	  post_fl(DECL_ARGS);
 static	void	  post_fn(DECL_ARGS);
 static	void	  post_fo(DECL_ARGS);
 static	void	  post_font(DECL_ARGS);
 static	void	  post_in(DECL_ARGS);
 static	void	  post_it(DECL_ARGS);
 static	void	  post_lb(DECL_ARGS);
 static	void	  post_nm(DECL_ARGS);
 static	void	  post_percent(DECL_ARGS);
 static	void	  post_pf(DECL_ARGS);
 static	void	  post_sect(DECL_ARGS);
 static	void	  post_vt(DECL_ARGS);
 static	int	  pre__t(DECL_ARGS);
 static	int	  pre_an(DECL_ARGS);
 static	int	  pre_ap(DECL_ARGS);
 static	int	  pre_aq(DECL_ARGS);
 static	int	  pre_bd(DECL_ARGS);
 static	int	  pre_bf(DECL_ARGS);
 static	int	  pre_bk(DECL_ARGS);
 static	int	  pre_bl(DECL_ARGS);
 static	void	  pre_br(DECL_ARGS);
 static	int	  pre_dl(DECL_ARGS);
 static	int	  pre_en(DECL_ARGS);
 static	int	  pre_enc(DECL_ARGS);
 static	int	  pre_em(DECL_ARGS);
 static	int	  pre_skip(DECL_ARGS);
 static	int	  pre_eo(DECL_ARGS);
 static	int	  pre_ex(DECL_ARGS);
 static	int	  pre_fa(DECL_ARGS);
 static	int	  pre_fd(DECL_ARGS);
 static	int	  pre_fl(DECL_ARGS);
 static	int	  pre_fn(DECL_ARGS);
 static	int	  pre_fo(DECL_ARGS);
 static	void	  pre_ft(DECL_ARGS);
 static	int	  pre_Ft(DECL_ARGS);
 static	int	  pre_in(DECL_ARGS);
 static	int	  pre_it(DECL_ARGS);
 static	int	  pre_lk(DECL_ARGS);
 static	int	  pre_li(DECL_ARGS);
 static	int	  pre_nm(DECL_ARGS);
 static	int	  pre_no(DECL_ARGS);
 static	int	  pre_ns(DECL_ARGS);
 static	void	  pre_onearg(DECL_ARGS);
 static	int	  pre_pp(DECL_ARGS);
 static	int	  pre_rs(DECL_ARGS);
 static	int	  pre_sm(DECL_ARGS);
 static	void	  pre_sp(DECL_ARGS);
 static	int	  pre_sect(DECL_ARGS);
 static	int	  pre_sy(DECL_ARGS);
 static	void	  pre_syn(const struct roff_node *);
 static	void	  pre_ta(DECL_ARGS);
 static	int	  pre_vt(DECL_ARGS);
 static	int	  pre_xr(DECL_ARGS);
 static	void	  print_word(const char *);
 static	void	  print_line(const char *, int);
 static	void	  print_block(const char *, int);
 static	void	  print_offs(const char *, int);
 static	void	  print_width(const struct mdoc_bl *,
 			const struct roff_node *);
 static	void	  print_count(int *);
 static	void	  print_node(DECL_ARGS);
 
 static	const void_fp roff_manacts[ROFF_MAX] = {
-	pre_br,
-	pre_onearg,
-	pre_ft,
-	pre_onearg,
-	pre_onearg,
-	pre_sp,
-	pre_ta,
-	pre_onearg,
+	pre_br,		/* br */
+	pre_onearg,	/* ce */
+	pre_ft,		/* ft */
+	pre_onearg,	/* ll */
+	pre_onearg,	/* mc */
+	pre_onearg,	/* po */
+	pre_onearg,	/* rj */
+	pre_sp,		/* sp */
+	pre_ta,		/* ta */
+	pre_onearg,	/* ti */
 };
 
 static	const struct manact __manacts[MDOC_MAX - MDOC_Dd] = {
 	{ NULL, NULL, NULL, NULL, NULL }, /* Dd */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Dt */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Os */
 	{ NULL, pre_sect, post_sect, ".SH", NULL }, /* Sh */
 	{ NULL, pre_sect, post_sect, ".SS", NULL }, /* Ss */
 	{ NULL, pre_pp, NULL, NULL, NULL }, /* Pp */
 	{ cond_body, pre_dl, post_dl, NULL, NULL }, /* D1 */
 	{ cond_body, pre_dl, post_dl, NULL, NULL }, /* Dl */
 	{ cond_body, pre_bd, post_bd, NULL, NULL }, /* Bd */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ed */
 	{ cond_body, pre_bl, post_bl, NULL, NULL }, /* Bl */
 	{ NULL, NULL, NULL, NULL, NULL }, /* El */
 	{ NULL, pre_it, post_it, NULL, NULL }, /* It */
 	{ NULL, pre_em, post_font, NULL, NULL }, /* Ad */
 	{ NULL, pre_an, NULL, NULL, NULL }, /* An */
 	{ NULL, pre_ap, NULL, NULL, NULL }, /* Ap */
 	{ NULL, pre_em, post_font, NULL, NULL }, /* Ar */
 	{ NULL, pre_sy, post_font, NULL, NULL }, /* Cd */
 	{ NULL, pre_sy, post_font, NULL, NULL }, /* Cm */
 	{ NULL, pre_li, post_font, NULL, NULL }, /* Dv */
 	{ NULL, pre_li, post_font, NULL, NULL }, /* Er */
 	{ NULL, pre_li, post_font, NULL, NULL }, /* Ev */
 	{ NULL, pre_ex, NULL, NULL, NULL }, /* Ex */
 	{ NULL, pre_fa, post_fa, NULL, NULL }, /* Fa */
 	{ NULL, pre_fd, post_fd, NULL, NULL }, /* Fd */
 	{ NULL, pre_fl, post_fl, NULL, NULL }, /* Fl */
 	{ NULL, pre_fn, post_fn, NULL, NULL }, /* Fn */
 	{ NULL, pre_Ft, post_font, NULL, NULL }, /* Ft */
 	{ NULL, pre_sy, post_font, NULL, NULL }, /* Ic */
 	{ NULL, pre_in, post_in, NULL, NULL }, /* In */
 	{ NULL, pre_li, post_font, NULL, NULL }, /* Li */
 	{ cond_head, pre_enc, NULL, "\\- ", NULL }, /* Nd */
 	{ NULL, pre_nm, post_nm, NULL, NULL }, /* Nm */
 	{ cond_body, pre_enc, post_enc, "[", "]" }, /* Op */
 	{ NULL, pre_Ft, post_font, NULL, NULL }, /* Ot */
 	{ NULL, pre_em, post_font, NULL, NULL }, /* Pa */
 	{ NULL, pre_ex, NULL, NULL, NULL }, /* Rv */
 	{ NULL, NULL, NULL, NULL, NULL }, /* St */
 	{ NULL, pre_em, post_font, NULL, NULL }, /* Va */
 	{ NULL, pre_vt, post_vt, NULL, NULL }, /* Vt */
 	{ NULL, pre_xr, NULL, NULL, NULL }, /* Xr */
 	{ NULL, NULL, post_percent, NULL, NULL }, /* %A */
 	{ NULL, pre_em, post_percent, NULL, NULL }, /* %B */
 	{ NULL, NULL, post_percent, NULL, NULL }, /* %D */
 	{ NULL, pre_em, post_percent, NULL, NULL }, /* %I */
 	{ NULL, pre_em, post_percent, NULL, NULL }, /* %J */
 	{ NULL, NULL, post_percent, NULL, NULL }, /* %N */
 	{ NULL, NULL, post_percent, NULL, NULL }, /* %O */
 	{ NULL, NULL, post_percent, NULL, NULL }, /* %P */
 	{ NULL, NULL, post_percent, NULL, NULL }, /* %R */
 	{ NULL, pre__t, post__t, NULL, NULL }, /* %T */
 	{ NULL, NULL, post_percent, NULL, NULL }, /* %V */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ac */
 	{ cond_body, pre_aq, post_aq, NULL, NULL }, /* Ao */
 	{ cond_body, pre_aq, post_aq, NULL, NULL }, /* Aq */
 	{ NULL, NULL, NULL, NULL, NULL }, /* At */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Bc */
 	{ NULL, pre_bf, post_bf, NULL, NULL }, /* Bf */
 	{ cond_body, pre_enc, post_enc, "[", "]" }, /* Bo */
 	{ cond_body, pre_enc, post_enc, "[", "]" }, /* Bq */
-	{ NULL, NULL, NULL, NULL, NULL }, /* Bsx */
-	{ NULL, NULL, NULL, NULL, NULL }, /* Bx */
+	{ NULL, pre_bk, post_bk, NULL, NULL }, /* Bsx */
+	{ NULL, pre_bk, post_bk, NULL, NULL }, /* Bx */
 	{ NULL, pre_skip, NULL, NULL, NULL }, /* Db */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Dc */
 	{ cond_body, pre_enc, post_enc, "\\(Lq", "\\(Rq" }, /* Do */
 	{ cond_body, pre_enc, post_enc, "\\(Lq", "\\(Rq" }, /* Dq */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ec */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ef */
 	{ NULL, pre_em, post_font, NULL, NULL }, /* Em */
 	{ cond_body, pre_eo, post_eo, NULL, NULL }, /* Eo */
-	{ NULL, NULL, NULL, NULL, NULL }, /* Fx */
+	{ NULL, pre_bk, post_bk, NULL, NULL }, /* Fx */
 	{ NULL, pre_sy, post_font, NULL, NULL }, /* Ms */
 	{ NULL, pre_no, NULL, NULL, NULL }, /* No */
 	{ NULL, pre_ns, NULL, NULL, NULL }, /* Ns */
-	{ NULL, NULL, NULL, NULL, NULL }, /* Nx */
-	{ NULL, NULL, NULL, NULL, NULL }, /* Ox */
+	{ NULL, pre_bk, post_bk, NULL, NULL }, /* Nx */
+	{ NULL, pre_bk, post_bk, NULL, NULL }, /* Ox */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Pc */
 	{ NULL, NULL, post_pf, NULL, NULL }, /* Pf */
 	{ cond_body, pre_enc, post_enc, "(", ")" }, /* Po */
 	{ cond_body, pre_enc, post_enc, "(", ")" }, /* Pq */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Qc */
 	{ cond_body, pre_enc, post_enc, "\\(oq", "\\(cq" }, /* Ql */
 	{ cond_body, pre_enc, post_enc, "\"", "\"" }, /* Qo */
 	{ cond_body, pre_enc, post_enc, "\"", "\"" }, /* Qq */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Re */
 	{ cond_body, pre_rs, NULL, NULL, NULL }, /* Rs */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Sc */
 	{ cond_body, pre_enc, post_enc, "\\(oq", "\\(cq" }, /* So */
 	{ cond_body, pre_enc, post_enc, "\\(oq", "\\(cq" }, /* Sq */
 	{ NULL, pre_sm, NULL, NULL, NULL }, /* Sm */
 	{ NULL, pre_em, post_font, NULL, NULL }, /* Sx */
 	{ NULL, pre_sy, post_font, NULL, NULL }, /* Sy */
 	{ NULL, pre_li, post_font, NULL, NULL }, /* Tn */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ux */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Xc */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Xo */
 	{ NULL, pre_fo, post_fo, NULL, NULL }, /* Fo */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Fc */
 	{ cond_body, pre_enc, post_enc, "[", "]" }, /* Oo */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Oc */
 	{ NULL, pre_bk, post_bk, NULL, NULL }, /* Bk */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ek */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Bt */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Hf */
 	{ NULL, pre_em, post_font, NULL, NULL }, /* Fr */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ud */
 	{ NULL, NULL, post_lb, NULL, NULL }, /* Lb */
 	{ NULL, pre_pp, NULL, NULL, NULL }, /* Lp */
 	{ NULL, pre_lk, NULL, NULL, NULL }, /* Lk */
 	{ NULL, pre_em, post_font, NULL, NULL }, /* Mt */
 	{ cond_body, pre_enc, post_enc, "{", "}" }, /* Brq */
 	{ cond_body, pre_enc, post_enc, "{", "}" }, /* Bro */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Brc */
 	{ NULL, NULL, post_percent, NULL, NULL }, /* %C */
 	{ NULL, pre_skip, NULL, NULL, NULL }, /* Es */
 	{ cond_body, pre_en, post_en, NULL, NULL }, /* En */
-	{ NULL, NULL, NULL, NULL, NULL }, /* Dx */
+	{ NULL, pre_bk, post_bk, NULL, NULL }, /* Dx */
 	{ NULL, NULL, post_percent, NULL, NULL }, /* %Q */
 	{ NULL, NULL, post_percent, NULL, NULL }, /* %U */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ta */
 };
 static	const struct manact *const manacts = __manacts - MDOC_Dd;
 
 static	int		outflags;
 #define	MMAN_spc	(1 << 0)  /* blank character before next word */
 #define	MMAN_spc_force	(1 << 1)  /* even before trailing punctuation */
 #define	MMAN_nl		(1 << 2)  /* break man(7) code line */
 #define	MMAN_br		(1 << 3)  /* break output line */
 #define	MMAN_sp		(1 << 4)  /* insert a blank output line */
 #define	MMAN_PP		(1 << 5)  /* reset indentation etc. */
 #define	MMAN_Sm		(1 << 6)  /* horizontal spacing mode */
 #define	MMAN_Bk		(1 << 7)  /* word keep mode */
 #define	MMAN_Bk_susp	(1 << 8)  /* suspend this (after a macro) */
 #define	MMAN_An_split	(1 << 9)  /* author mode is "split" */
 #define	MMAN_An_nosplit	(1 << 10) /* author mode is "nosplit" */
 #define	MMAN_PD		(1 << 11) /* inter-paragraph spacing disabled */
 #define	MMAN_nbrword	(1 << 12) /* do not break the next word */
 
 #define	BL_STACK_MAX	32
 
 static	int		Bl_stack[BL_STACK_MAX];  /* offsets [chars] */
 static	int		Bl_stack_post[BL_STACK_MAX];  /* add final .RE */
 static	int		Bl_stack_len;  /* number of nested Bl blocks */
 static	int		TPremain;  /* characters before tag is full */
 
 static	struct {
 	char	*head;
 	char	*tail;
 	size_t	 size;
 }	fontqueue;
 
 
 static int
 man_strlen(const char *cp)
 {
 	size_t	 rsz;
 	int	 skip, sz;
 
 	sz = 0;
 	skip = 0;
 	for (;;) {
 		rsz = strcspn(cp, "\\");
 		if (rsz) {
 			cp += rsz;
 			if (skip) {
 				skip = 0;
 				rsz--;
 			}
 			sz += rsz;
 		}
 		if ('\0' == *cp)
 			break;
 		cp++;
 		switch (mandoc_escape(&cp, NULL, NULL)) {
 		case ESCAPE_ERROR:
 			return sz;
 		case ESCAPE_UNICODE:
 		case ESCAPE_NUMBERED:
 		case ESCAPE_SPECIAL:
 		case ESCAPE_OVERSTRIKE:
 			if (skip)
 				skip = 0;
 			else
 				sz++;
 			break;
 		case ESCAPE_SKIPCHAR:
 			skip = 1;
 			break;
 		default:
 			break;
 		}
 	}
 	return sz;
 }
 
 static void
 font_push(char newfont)
 {
 
 	if (fontqueue.head + fontqueue.size <= ++fontqueue.tail) {
 		fontqueue.size += 8;
 		fontqueue.head = mandoc_realloc(fontqueue.head,
 		    fontqueue.size);
 	}
 	*fontqueue.tail = newfont;
 	print_word("");
 	printf("\\f");
 	putchar(newfont);
 	outflags &= ~MMAN_spc;
 }
 
 static void
 font_pop(void)
 {
 
 	if (fontqueue.tail > fontqueue.head)
 		fontqueue.tail--;
 	outflags &= ~MMAN_spc;
 	print_word("");
 	printf("\\f");
 	putchar(*fontqueue.tail);
 }
 
 static void
 print_word(const char *s)
 {
 
 	if ((MMAN_PP | MMAN_sp | MMAN_br | MMAN_nl) & outflags) {
 		/*
 		 * If we need a newline, print it now and start afresh.
 		 */
 		if (MMAN_PP & outflags) {
 			if (MMAN_sp & outflags) {
 				if (MMAN_PD & outflags) {
 					printf("\n.PD");
 					outflags &= ~MMAN_PD;
 				}
 			} else if ( ! (MMAN_PD & outflags)) {
 				printf("\n.PD 0");
 				outflags |= MMAN_PD;
 			}
 			printf("\n.PP\n");
 		} else if (MMAN_sp & outflags)
 			printf("\n.sp\n");
 		else if (MMAN_br & outflags)
 			printf("\n.br\n");
 		else if (MMAN_nl & outflags)
 			putchar('\n');
 		outflags &= ~(MMAN_PP|MMAN_sp|MMAN_br|MMAN_nl|MMAN_spc);
 		if (1 == TPremain)
 			printf(".br\n");
 		TPremain = 0;
 	} else if (MMAN_spc & outflags) {
 		/*
 		 * If we need a space, only print it if
 		 * (1) it is forced by `No' or
 		 * (2) what follows is not terminating punctuation or
 		 * (3) what follows is longer than one character.
 		 */
 		if (MMAN_spc_force & outflags || '\0' == s[0] ||
 		    NULL == strchr(".,:;)]?!", s[0]) || '\0' != s[1]) {
 			if (MMAN_Bk & outflags &&
 			    ! (MMAN_Bk_susp & outflags))
 				putchar('\\');
 			putchar(' ');
 			if (TPremain)
 				TPremain--;
 		}
 	}
 
 	/*
 	 * Reassign needing space if we're not following opening
 	 * punctuation.
 	 */
 	if (MMAN_Sm & outflags && ('\0' == s[0] ||
 	    (('(' != s[0] && '[' != s[0]) || '\0' != s[1])))
 		outflags |= MMAN_spc;
 	else
 		outflags &= ~MMAN_spc;
 	outflags &= ~(MMAN_spc_force | MMAN_Bk_susp);
 
 	for ( ; *s; s++) {
 		switch (*s) {
 		case ASCII_NBRSP:
 			printf("\\ ");
 			break;
 		case ASCII_HYPH:
 			putchar('-');
 			break;
 		case ASCII_BREAK:
 			printf("\\:");
 			break;
 		case ' ':
 			if (MMAN_nbrword & outflags) {
 				printf("\\ ");
 				break;
 			}
 			/* FALLTHROUGH */
 		default:
 			putchar((unsigned char)*s);
 			break;
 		}
 		if (TPremain)
 			TPremain--;
 	}
 	outflags &= ~MMAN_nbrword;
 }
 
 static void
 print_line(const char *s, int newflags)
 {
 
 	outflags |= MMAN_nl;
 	print_word(s);
 	outflags |= newflags;
 }
 
 static void
 print_block(const char *s, int newflags)
 {
 
 	outflags &= ~MMAN_PP;
 	if (MMAN_sp & outflags) {
 		outflags &= ~(MMAN_sp | MMAN_br);
 		if (MMAN_PD & outflags) {
 			print_line(".PD", 0);
 			outflags &= ~MMAN_PD;
 		}
 	} else if (! (MMAN_PD & outflags))
 		print_line(".PD 0", MMAN_PD);
 	outflags |= MMAN_nl;
 	print_word(s);
 	outflags |= MMAN_Bk_susp | newflags;
 }
 
 static void
 print_offs(const char *v, int keywords)
 {
 	char		  buf[24];
 	struct roffsu	  su;
 	const char	 *end;
 	int		  sz;
 
 	print_line(".RS", MMAN_Bk_susp);
 
 	/* Convert v into a number (of characters). */
 	if (NULL == v || '\0' == *v || (keywords && !strcmp(v, "left")))
 		sz = 0;
 	else if (keywords && !strcmp(v, "indent"))
 		sz = 6;
 	else if (keywords && !strcmp(v, "indent-two"))
 		sz = 12;
 	else {
 		end = a2roffsu(v, &su, SCALE_EN);
 		if (end == NULL || *end != '\0')
 			sz = man_strlen(v);
 		else if (SCALE_EN == su.unit)
 			sz = su.scale;
 		else {
 			/*
 			 * XXX
 			 * If we are inside an enclosing list,
 			 * there is no easy way to add the two
 			 * indentations because they are provided
 			 * in terms of different units.
 			 */
 			print_word(v);
 			outflags |= MMAN_nl;
 			return;
 		}
 	}
 
 	/*
 	 * We are inside an enclosing list.
 	 * Add the two indentations.
 	 */
 	if (Bl_stack_len)
 		sz += Bl_stack[Bl_stack_len - 1];
 
 	(void)snprintf(buf, sizeof(buf), "%dn", sz);
 	print_word(buf);
 	outflags |= MMAN_nl;
 }
 
 /*
  * Set up the indentation for a list item; used from pre_it().
  */
 static void
 print_width(const struct mdoc_bl *bl, const struct roff_node *child)
 {
 	char		  buf[24];
 	struct roffsu	  su;
 	const char	 *end;
 	int		  numeric, remain, sz, chsz;
 
 	numeric = 1;
 	remain = 0;
 
 	/* Convert the width into a number (of characters). */
 	if (bl->width == NULL)
 		sz = (bl->type == LIST_hang) ? 6 : 0;
 	else {
 		end = a2roffsu(bl->width, &su, SCALE_MAX);
 		if (end == NULL || *end != '\0')
 			sz = man_strlen(bl->width);
 		else if (SCALE_EN == su.unit)
 			sz = su.scale;
 		else {
 			sz = 0;
 			numeric = 0;
 		}
 	}
 
 	/* XXX Rough estimation, might have multiple parts. */
 	if (bl->type == LIST_enum)
 		chsz = (bl->count > 8) + 1;
 	else if (child != NULL && child->type == ROFFT_TEXT)
 		chsz = man_strlen(child->string);
 	else
 		chsz = 0;
 
 	/* Maybe we are inside an enclosing list? */
 	mid_it();
 
 	/*
 	 * Save our own indentation,
 	 * such that child lists can use it.
 	 */
 	Bl_stack[Bl_stack_len++] = sz + 2;
 
 	/* Set up the current list. */
 	if (chsz > sz && bl->type != LIST_tag)
 		print_block(".HP", 0);
 	else {
 		print_block(".TP", 0);
 		remain = sz + 2;
 	}
 	if (numeric) {
 		(void)snprintf(buf, sizeof(buf), "%dn", sz + 2);
 		print_word(buf);
 	} else
 		print_word(bl->width);
 	TPremain = remain;
 }
 
 static void
 print_count(int *count)
 {
 	char		  buf[24];
 
 	(void)snprintf(buf, sizeof(buf), "%d.\\&", ++*count);
 	print_word(buf);
 }
 
 void
 man_man(void *arg, const struct roff_man *man)
 {
 
 	/*
 	 * Dump the keep buffer.
 	 * We're guaranteed by now that this exists (is non-NULL).
 	 * Flush stdout afterward, just in case.
 	 */
 	fputs(mparse_getkeep(man_mparse(man)), stdout);
 	fflush(stdout);
 }
 
 void
 man_mdoc(void *arg, const struct roff_man *mdoc)
 {
 	struct roff_node *n;
 
 	printf(".TH \"%s\" \"%s\" \"%s\" \"%s\" \"%s\"\n",
 	    mdoc->meta.title,
 	    (mdoc->meta.msec == NULL ? "" : mdoc->meta.msec),
 	    mdoc->meta.date, mdoc->meta.os, mdoc->meta.vol);
 
 	/* Disable hyphenation and if nroff, disable justification. */
 	printf(".nh\n.if n .ad l");
 
 	outflags = MMAN_nl | MMAN_Sm;
 	if (0 == fontqueue.size) {
 		fontqueue.size = 8;
 		fontqueue.head = fontqueue.tail = mandoc_malloc(8);
 		*fontqueue.tail = 'R';
 	}
 	for (n = mdoc->first->child; n != NULL; n = n->next)
 		print_node(&mdoc->meta, n);
 	putchar('\n');
 }
 
 static void
 print_node(DECL_ARGS)
 {
 	const struct manact	*act;
 	struct roff_node	*sub;
 	int			 cond, do_sub;
 
 	if (n->flags & NODE_NOPRT)
 		return;
 
 	/*
 	 * Break the line if we were parsed subsequent the current node.
 	 * This makes the page structure be more consistent.
 	 */
 	if (MMAN_spc & outflags && NODE_LINE & n->flags)
 		outflags |= MMAN_nl;
 
 	act = NULL;
 	cond = 0;
 	do_sub = 1;
 	n->flags &= ~NODE_ENDED;
 
 	if (n->type == ROFFT_TEXT) {
 		/*
 		 * Make sure that we don't happen to start with a
 		 * control character at the start of a line.
 		 */
 		if (MMAN_nl & outflags &&
 		    ('.' == *n->string || '\'' == *n->string)) {
 			print_word("");
 			printf("\\&");
 			outflags &= ~MMAN_spc;
 		}
 		if (n->flags & NODE_DELIMC)
 			outflags &= ~(MMAN_spc | MMAN_spc_force);
 		else if (outflags & MMAN_Sm)
 			outflags |= MMAN_spc_force;
 		print_word(n->string);
 		if (n->flags & NODE_DELIMO)
 			outflags &= ~(MMAN_spc | MMAN_spc_force);
 		else if (outflags & MMAN_Sm)
 			outflags |= MMAN_spc;
 	} else if (n->tok < ROFF_MAX) {
 		(*roff_manacts[n->tok])(meta, n);
 		return;
 	} else {
 		assert(n->tok >= MDOC_Dd && n->tok < MDOC_MAX);
 		/*
 		 * Conditionally run the pre-node action handler for a
 		 * node.
 		 */
 		act = manacts + n->tok;
 		cond = act->cond == NULL || (*act->cond)(meta, n);
 		if (cond && act->pre != NULL &&
 		    (n->end == ENDBODY_NOT || n->child != NULL))
 			do_sub = (*act->pre)(meta, n);
 	}
 
 	/*
 	 * Conditionally run all child nodes.
 	 * Note that this iterates over children instead of using
 	 * recursion.  This prevents unnecessary depth in the stack.
 	 */
 	if (do_sub)
 		for (sub = n->child; sub; sub = sub->next)
 			print_node(meta, sub);
 
 	/*
 	 * Lastly, conditionally run the post-node handler.
 	 */
 	if (NODE_ENDED & n->flags)
 		return;
 
 	if (cond && act->post)
 		(*act->post)(meta, n);
 
 	if (ENDBODY_NOT != n->end)
 		n->body->flags |= NODE_ENDED;
 }
 
 static int
 cond_head(DECL_ARGS)
 {
 
 	return n->type == ROFFT_HEAD;
 }
 
 static int
 cond_body(DECL_ARGS)
 {
 
 	return n->type == ROFFT_BODY;
 }
 
 static int
 pre_enc(DECL_ARGS)
 {
 	const char	*prefix;
 
 	prefix = manacts[n->tok].prefix;
 	if (NULL == prefix)
 		return 1;
 	print_word(prefix);
 	outflags &= ~MMAN_spc;
 	return 1;
 }
 
 static void
 post_enc(DECL_ARGS)
 {
 	const char *suffix;
 
 	suffix = manacts[n->tok].suffix;
 	if (NULL == suffix)
 		return;
 	outflags &= ~(MMAN_spc | MMAN_nl);
 	print_word(suffix);
 }
 
 static int
 pre_ex(DECL_ARGS)
 {
 	outflags |= MMAN_br | MMAN_nl;
 	return 1;
 }
 
 static void
 post_font(DECL_ARGS)
 {
 
 	font_pop();
 }
 
 static void
 post_percent(DECL_ARGS)
 {
 
 	if (pre_em == manacts[n->tok].pre)
 		font_pop();
 	if (n->next) {
 		print_word(",");
 		if (n->prev &&	n->prev->tok == n->tok &&
 				n->next->tok == n->tok)
 			print_word("and");
 	} else {
 		print_word(".");
 		outflags |= MMAN_nl;
 	}
 }
 
 static int
 pre__t(DECL_ARGS)
 {
 
 	if (n->parent->tok == MDOC_Rs && n->parent->norm->Rs.quote_T) {
 		print_word("\\(lq");
 		outflags &= ~MMAN_spc;
 	} else
 		font_push('I');
 	return 1;
 }
 
 static void
 post__t(DECL_ARGS)
 {
 
 	if (n->parent->tok  == MDOC_Rs && n->parent->norm->Rs.quote_T) {
 		outflags &= ~MMAN_spc;
 		print_word("\\(rq");
 	} else
 		font_pop();
 	post_percent(meta, n);
 }
 
 /*
  * Print before a section header.
  */
 static int
 pre_sect(DECL_ARGS)
 {
 
 	if (n->type == ROFFT_HEAD) {
 		outflags |= MMAN_sp;
 		print_block(manacts[n->tok].prefix, 0);
 		print_word("");
 		putchar('\"');
 		outflags &= ~MMAN_spc;
 	}
 	return 1;
 }
 
 /*
  * Print subsequent a section header.
  */
 static void
 post_sect(DECL_ARGS)
 {
 
 	if (n->type != ROFFT_HEAD)
 		return;
 	outflags &= ~MMAN_spc;
 	print_word("");
 	putchar('\"');
 	outflags |= MMAN_nl;
 	if (MDOC_Sh == n->tok && SEC_AUTHORS == n->sec)
 		outflags &= ~(MMAN_An_split | MMAN_An_nosplit);
 }
 
 /* See mdoc_term.c, synopsis_pre() for comments. */
 static void
 pre_syn(const struct roff_node *n)
 {
 
 	if (NULL == n->prev || ! (NODE_SYNPRETTY & n->flags))
 		return;
 
 	if (n->prev->tok == n->tok &&
 	    MDOC_Ft != n->tok &&
 	    MDOC_Fo != n->tok &&
 	    MDOC_Fn != n->tok) {
 		outflags |= MMAN_br;
 		return;
 	}
 
 	switch (n->prev->tok) {
 	case MDOC_Fd:
 	case MDOC_Fn:
 	case MDOC_Fo:
 	case MDOC_In:
 	case MDOC_Vt:
 		outflags |= MMAN_sp;
 		break;
 	case MDOC_Ft:
 		if (MDOC_Fn != n->tok && MDOC_Fo != n->tok) {
 			outflags |= MMAN_sp;
 			break;
 		}
 		/* FALLTHROUGH */
 	default:
 		outflags |= MMAN_br;
 		break;
 	}
 }
 
 static int
 pre_an(DECL_ARGS)
 {
 
 	switch (n->norm->An.auth) {
 	case AUTH_split:
 		outflags &= ~MMAN_An_nosplit;
 		outflags |= MMAN_An_split;
 		return 0;
 	case AUTH_nosplit:
 		outflags &= ~MMAN_An_split;
 		outflags |= MMAN_An_nosplit;
 		return 0;
 	default:
 		if (MMAN_An_split & outflags)
 			outflags |= MMAN_br;
 		else if (SEC_AUTHORS == n->sec &&
 		    ! (MMAN_An_nosplit & outflags))
 			outflags |= MMAN_An_split;
 		return 1;
 	}
 }
 
 static int
 pre_ap(DECL_ARGS)
 {
 
 	outflags &= ~MMAN_spc;
 	print_word("'");
 	outflags &= ~MMAN_spc;
 	return 0;
 }
 
 static int
 pre_aq(DECL_ARGS)
 {
 
 	print_word(n->child != NULL && n->child->next == NULL &&
 	    n->child->tok == MDOC_Mt ?  "<" : "\\(la");
 	outflags &= ~MMAN_spc;
 	return 1;
 }
 
 static void
 post_aq(DECL_ARGS)
 {
 
 	outflags &= ~(MMAN_spc | MMAN_nl);
 	print_word(n->child != NULL && n->child->next == NULL &&
 	    n->child->tok == MDOC_Mt ?  ">" : "\\(ra");
 }
 
 static int
 pre_bd(DECL_ARGS)
 {
 
 	outflags &= ~(MMAN_PP | MMAN_sp | MMAN_br);
 
 	if (DISP_unfilled == n->norm->Bd.type ||
 	    DISP_literal  == n->norm->Bd.type)
 		print_line(".nf", 0);
 	if (0 == n->norm->Bd.comp && NULL != n->parent->prev)
 		outflags |= MMAN_sp;
 	print_offs(n->norm->Bd.offs, 1);
 	return 1;
 }
 
 static void
 post_bd(DECL_ARGS)
 {
 
 	/* Close out this display. */
 	print_line(".RE", MMAN_nl);
 	if (DISP_unfilled == n->norm->Bd.type ||
 	    DISP_literal  == n->norm->Bd.type)
 		print_line(".fi", MMAN_nl);
 
 	/* Maybe we are inside an enclosing list? */
 	if (NULL != n->parent->next)
 		mid_it();
 }
 
 static int
 pre_bf(DECL_ARGS)
 {
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		return 1;
 	case ROFFT_BODY:
 		break;
 	default:
 		return 0;
 	}
 	switch (n->norm->Bf.font) {
 	case FONT_Em:
 		font_push('I');
 		break;
 	case FONT_Sy:
 		font_push('B');
 		break;
 	default:
 		font_push('R');
 		break;
 	}
 	return 1;
 }
 
 static void
 post_bf(DECL_ARGS)
 {
 
 	if (n->type == ROFFT_BODY)
 		font_pop();
 }
 
 static int
 pre_bk(DECL_ARGS)
 {
-
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		return 1;
 	case ROFFT_BODY:
+	case ROFFT_ELEM:
 		outflags |= MMAN_Bk;
 		return 1;
 	default:
 		return 0;
 	}
 }
 
 static void
 post_bk(DECL_ARGS)
 {
-
-	if (n->type == ROFFT_BODY)
+	switch (n->type) {
+	case ROFFT_ELEM:
+		while ((n = n->parent) != NULL)
+			 if (n->tok == MDOC_Bk)
+				return;
+		/* FALLTHROUGH */
+	case ROFFT_BODY:
 		outflags &= ~MMAN_Bk;
+		break;
+	default:
+		break;
+	}
 }
 
 static int
 pre_bl(DECL_ARGS)
 {
 	size_t		 icol;
 
 	/*
 	 * print_offs() will increase the -offset to account for
 	 * a possible enclosing .It, but any enclosed .It blocks
 	 * just nest and do not add up their indentation.
 	 */
 	if (n->norm->Bl.offs) {
 		print_offs(n->norm->Bl.offs, 0);
 		Bl_stack[Bl_stack_len++] = 0;
 	}
 
 	switch (n->norm->Bl.type) {
 	case LIST_enum:
 		n->norm->Bl.count = 0;
 		return 1;
 	case LIST_column:
 		break;
 	default:
 		return 1;
 	}
 
 	if (n->child != NULL) {
 		print_line(".TS", MMAN_nl);
 		for (icol = 0; icol < n->norm->Bl.ncols; icol++)
 			print_word("l");
 		print_word(".");
 	}
 	outflags |= MMAN_nl;
 	return 1;
 }
 
 static void
 post_bl(DECL_ARGS)
 {
 
 	switch (n->norm->Bl.type) {
 	case LIST_column:
 		if (n->child != NULL)
 			print_line(".TE", 0);
 		break;
 	case LIST_enum:
 		n->norm->Bl.count = 0;
 		break;
 	default:
 		break;
 	}
 
 	if (n->norm->Bl.offs) {
 		print_line(".RE", MMAN_nl);
 		assert(Bl_stack_len);
 		Bl_stack_len--;
 		assert(0 == Bl_stack[Bl_stack_len]);
 	} else {
 		outflags |= MMAN_PP | MMAN_nl;
 		outflags &= ~(MMAN_sp | MMAN_br);
 	}
 
 	/* Maybe we are inside an enclosing list? */
 	if (NULL != n->parent->next)
 		mid_it();
 
 }
 
 static void
 pre_br(DECL_ARGS)
 {
 	outflags |= MMAN_br;
 }
 
 static int
 pre_dl(DECL_ARGS)
 {
 
 	print_offs("6n", 0);
 	return 1;
 }
 
 static void
 post_dl(DECL_ARGS)
 {
 
 	print_line(".RE", MMAN_nl);
 
 	/* Maybe we are inside an enclosing list? */
 	if (NULL != n->parent->next)
 		mid_it();
 }
 
 static int
 pre_em(DECL_ARGS)
 {
 
 	font_push('I');
 	return 1;
 }
 
 static int
 pre_en(DECL_ARGS)
 {
 
 	if (NULL == n->norm->Es ||
 	    NULL == n->norm->Es->child)
 		return 1;
 
 	print_word(n->norm->Es->child->string);
 	outflags &= ~MMAN_spc;
 	return 1;
 }
 
 static void
 post_en(DECL_ARGS)
 {
 
 	if (NULL == n->norm->Es ||
 	    NULL == n->norm->Es->child ||
 	    NULL == n->norm->Es->child->next)
 		return;
 
 	outflags &= ~MMAN_spc;
 	print_word(n->norm->Es->child->next->string);
 	return;
 }
 
 static int
 pre_eo(DECL_ARGS)
 {
 
 	if (n->end == ENDBODY_NOT &&
 	    n->parent->head->child == NULL &&
 	    n->child != NULL &&
 	    n->child->end != ENDBODY_NOT)
 		print_word("\\&");
 	else if (n->end != ENDBODY_NOT ? n->child != NULL :
 	    n->parent->head->child != NULL && (n->child != NULL ||
 	    (n->parent->tail != NULL && n->parent->tail->child != NULL)))
 		outflags &= ~(MMAN_spc | MMAN_nl);
 	return 1;
 }
 
 static void
 post_eo(DECL_ARGS)
 {
 	int	 body, tail;
 
 	if (n->end != ENDBODY_NOT) {
 		outflags |= MMAN_spc;
 		return;
 	}
 
 	body = n->child != NULL || n->parent->head->child != NULL;
 	tail = n->parent->tail != NULL && n->parent->tail->child != NULL;
 
 	if (body && tail)
 		outflags &= ~MMAN_spc;
 	else if ( ! (body || tail))
 		print_word("\\&");
 	else if ( ! tail)
 		outflags |= MMAN_spc;
 }
 
 static int
 pre_fa(DECL_ARGS)
 {
 	int	 am_Fa;
 
 	am_Fa = MDOC_Fa == n->tok;
 
 	if (am_Fa)
 		n = n->child;
 
 	while (NULL != n) {
 		font_push('I');
 		if (am_Fa || NODE_SYNPRETTY & n->flags)
 			outflags |= MMAN_nbrword;
 		print_node(meta, n);
 		font_pop();
 		if (NULL != (n = n->next))
 			print_word(",");
 	}
 	return 0;
 }
 
 static void
 post_fa(DECL_ARGS)
 {
 
 	if (NULL != n->next && MDOC_Fa == n->next->tok)
 		print_word(",");
 }
 
 static int
 pre_fd(DECL_ARGS)
 {
 
 	pre_syn(n);
 	font_push('B');
 	return 1;
 }
 
 static void
 post_fd(DECL_ARGS)
 {
 
 	font_pop();
 	outflags |= MMAN_br;
 }
 
 static int
 pre_fl(DECL_ARGS)
 {
 
 	font_push('B');
 	print_word("\\-");
 	if (n->child != NULL)
 		outflags &= ~MMAN_spc;
 	return 1;
 }
 
 static void
 post_fl(DECL_ARGS)
 {
 
 	font_pop();
 	if (!(n->child != NULL ||
 	    n->next == NULL ||
 	    n->next->type == ROFFT_TEXT ||
 	    n->next->flags & NODE_LINE))
 		outflags &= ~MMAN_spc;
 }
 
 static int
 pre_fn(DECL_ARGS)
 {
 
 	pre_syn(n);
 
 	n = n->child;
 	if (NULL == n)
 		return 0;
 
 	if (NODE_SYNPRETTY & n->flags)
 		print_block(".HP 4n", MMAN_nl);
 
 	font_push('B');
 	print_node(meta, n);
 	font_pop();
 	outflags &= ~MMAN_spc;
 	print_word("(");
 	outflags &= ~MMAN_spc;
 
 	n = n->next;
 	if (NULL != n)
 		pre_fa(meta, n);
 	return 0;
 }
 
 static void
 post_fn(DECL_ARGS)
 {
 
 	print_word(")");
 	if (NODE_SYNPRETTY & n->flags) {
 		print_word(";");
 		outflags |= MMAN_PP;
 	}
 }
 
 static int
 pre_fo(DECL_ARGS)
 {
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		pre_syn(n);
 		break;
 	case ROFFT_HEAD:
 		if (n->child == NULL)
 			return 0;
 		if (NODE_SYNPRETTY & n->flags)
 			print_block(".HP 4n", MMAN_nl);
 		font_push('B');
 		break;
 	case ROFFT_BODY:
 		outflags &= ~(MMAN_spc | MMAN_nl);
 		print_word("(");
 		outflags &= ~MMAN_spc;
 		break;
 	default:
 		break;
 	}
 	return 1;
 }
 
 static void
 post_fo(DECL_ARGS)
 {
 
 	switch (n->type) {
 	case ROFFT_HEAD:
 		if (n->child != NULL)
 			font_pop();
 		break;
 	case ROFFT_BODY:
 		post_fn(meta, n);
 		break;
 	default:
 		break;
 	}
 }
 
 static int
 pre_Ft(DECL_ARGS)
 {
 
 	pre_syn(n);
 	font_push('I');
 	return 1;
 }
 
 static void
 pre_ft(DECL_ARGS)
 {
 	print_line(".ft", 0);
 	print_word(n->child->string);
 	outflags |= MMAN_nl;
 }
 
 static int
 pre_in(DECL_ARGS)
 {
 
 	if (NODE_SYNPRETTY & n->flags) {
 		pre_syn(n);
 		font_push('B');
 		print_word("#include <");
 		outflags &= ~MMAN_spc;
 	} else {
 		print_word("<");
 		outflags &= ~MMAN_spc;
 		font_push('I');
 	}
 	return 1;
 }
 
 static void
 post_in(DECL_ARGS)
 {
 
 	if (NODE_SYNPRETTY & n->flags) {
 		outflags &= ~MMAN_spc;
 		print_word(">");
 		font_pop();
 		outflags |= MMAN_br;
 	} else {
 		font_pop();
 		outflags &= ~MMAN_spc;
 		print_word(">");
 	}
 }
 
 static int
 pre_it(DECL_ARGS)
 {
 	const struct roff_node *bln;
 
 	switch (n->type) {
 	case ROFFT_HEAD:
 		outflags |= MMAN_PP | MMAN_nl;
 		bln = n->parent->parent;
 		if (0 == bln->norm->Bl.comp ||
 		    (NULL == n->parent->prev &&
 		     NULL == bln->parent->prev))
 			outflags |= MMAN_sp;
 		outflags &= ~MMAN_br;
 		switch (bln->norm->Bl.type) {
 		case LIST_item:
 			return 0;
 		case LIST_inset:
 		case LIST_diag:
 		case LIST_ohang:
 			if (bln->norm->Bl.type == LIST_diag)
 				print_line(".B \"", 0);
 			else
 				print_line(".R \"", 0);
 			outflags &= ~MMAN_spc;
 			return 1;
 		case LIST_bullet:
 		case LIST_dash:
 		case LIST_hyphen:
 			print_width(&bln->norm->Bl, NULL);
 			TPremain = 0;
 			outflags |= MMAN_nl;
 			font_push('B');
 			if (LIST_bullet == bln->norm->Bl.type)
 				print_word("\\(bu");
 			else
 				print_word("-");
 			font_pop();
 			outflags |= MMAN_nl;
 			return 0;
 		case LIST_enum:
 			print_width(&bln->norm->Bl, NULL);
 			TPremain = 0;
 			outflags |= MMAN_nl;
 			print_count(&bln->norm->Bl.count);
 			outflags |= MMAN_nl;
 			return 0;
 		case LIST_hang:
 			print_width(&bln->norm->Bl, n->child);
 			TPremain = 0;
 			outflags |= MMAN_nl;
 			return 1;
 		case LIST_tag:
 			print_width(&bln->norm->Bl, n->child);
 			putchar('\n');
 			outflags &= ~MMAN_spc;
 			return 1;
 		default:
 			return 1;
 		}
 	default:
 		break;
 	}
 	return 1;
 }
 
 /*
  * This function is called after closing out an indented block.
  * If we are inside an enclosing list, restore its indentation.
  */
 static void
 mid_it(void)
 {
 	char		 buf[24];
 
 	/* Nothing to do outside a list. */
 	if (0 == Bl_stack_len || 0 == Bl_stack[Bl_stack_len - 1])
 		return;
 
 	/* The indentation has already been set up. */
 	if (Bl_stack_post[Bl_stack_len - 1])
 		return;
 
 	/* Restore the indentation of the enclosing list. */
 	print_line(".RS", MMAN_Bk_susp);
 	(void)snprintf(buf, sizeof(buf), "%dn",
 	    Bl_stack[Bl_stack_len - 1]);
 	print_word(buf);
 
 	/* Remeber to close out this .RS block later. */
 	Bl_stack_post[Bl_stack_len - 1] = 1;
 }
 
 static void
 post_it(DECL_ARGS)
 {
 	const struct roff_node *bln;
 
 	bln = n->parent->parent;
 
 	switch (n->type) {
 	case ROFFT_HEAD:
 		switch (bln->norm->Bl.type) {
 		case LIST_diag:
 			outflags &= ~MMAN_spc;
 			print_word("\\ ");
 			break;
 		case LIST_ohang:
 			outflags |= MMAN_br;
 			break;
 		default:
 			break;
 		}
 		break;
 	case ROFFT_BODY:
 		switch (bln->norm->Bl.type) {
 		case LIST_bullet:
 		case LIST_dash:
 		case LIST_hyphen:
 		case LIST_enum:
 		case LIST_hang:
 		case LIST_tag:
 			assert(Bl_stack_len);
 			Bl_stack[--Bl_stack_len] = 0;
 
 			/*
 			 * Our indentation had to be restored
 			 * after a child display or child list.
 			 * Close out that indentation block now.
 			 */
 			if (Bl_stack_post[Bl_stack_len]) {
 				print_line(".RE", MMAN_nl);
 				Bl_stack_post[Bl_stack_len] = 0;
 			}
 			break;
 		case LIST_column:
 			if (NULL != n->next) {
 				putchar('\t');
 				outflags &= ~MMAN_spc;
 			}
 			break;
 		default:
 			break;
 		}
 		break;
 	default:
 		break;
 	}
 }
 
 static void
 post_lb(DECL_ARGS)
 {
 
 	if (SEC_LIBRARY == n->sec)
 		outflags |= MMAN_br;
 }
 
 static int
 pre_lk(DECL_ARGS)
 {
 	const struct roff_node *link, *descr, *punct;
 	int display;
 
 	if ((link = n->child) == NULL)
 		return 0;
 
 	/* Find beginning of trailing punctuation. */
 	punct = n->last;
 	while (punct != link && punct->flags & NODE_DELIMC)
 		punct = punct->prev;
 	punct = punct->next;
 
 	/* Link text. */
 	if ((descr = link->next) != NULL && descr != punct) {
 		font_push('I');
 		while (descr != punct) {
 			print_word(descr->string);
 			descr = descr->next;
 		}
 		font_pop();
 		print_word(":");
 	}
 
 	/* Link target. */
 	display = man_strlen(link->string) >= 26;
 	if (display) {
 		print_line(".RS", MMAN_Bk_susp);
 		print_word("6n");
 		outflags |= MMAN_nl;
 	}
 	font_push('B');
 	print_word(link->string);
 	font_pop();
 
 	/* Trailing punctuation. */
 	while (punct != NULL) {
 		print_word(punct->string);
 		punct = punct->next;
 	}
 	if (display)
 		print_line(".RE", MMAN_nl);
 	return 0;
 }
 
 static void
 pre_onearg(DECL_ARGS)
 {
 	outflags |= MMAN_nl;
 	print_word(".");
 	outflags &= ~MMAN_spc;
 	print_word(roff_name[n->tok]);
 	if (n->child != NULL)
 		print_word(n->child->string);
 	outflags |= MMAN_nl;
 	if (n->tok == ROFF_ce)
 		for (n = n->child->next; n != NULL; n = n->next)
 			print_node(meta, n);
 }
 
 static int
 pre_li(DECL_ARGS)
 {
 
 	font_push('R');
 	return 1;
 }
 
 static int
 pre_nm(DECL_ARGS)
 {
 	char	*name;
 
 	if (n->type == ROFFT_BLOCK) {
 		outflags |= MMAN_Bk;
 		pre_syn(n);
 	}
 	if (n->type != ROFFT_ELEM && n->type != ROFFT_HEAD)
 		return 1;
 	name = n->child == NULL ? NULL : n->child->string;
 	if (NULL == name)
 		return 0;
 	if (n->type == ROFFT_HEAD) {
 		if (NULL == n->parent->prev)
 			outflags |= MMAN_sp;
 		print_block(".HP", 0);
 		printf(" %dn", man_strlen(name) + 1);
 		outflags |= MMAN_nl;
 	}
 	font_push('B');
 	return 1;
 }
 
 static void
 post_nm(DECL_ARGS)
 {
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		outflags &= ~MMAN_Bk;
 		break;
 	case ROFFT_HEAD:
 	case ROFFT_ELEM:
 		if (n->child != NULL && n->child->string != NULL)
 			font_pop();
 		break;
 	default:
 		break;
 	}
 }
 
 static int
 pre_no(DECL_ARGS)
 {
 
 	outflags |= MMAN_spc_force;
 	return 1;
 }
 
 static int
 pre_ns(DECL_ARGS)
 {
 
 	outflags &= ~MMAN_spc;
 	return 0;
 }
 
 static void
 post_pf(DECL_ARGS)
 {
 
 	if ( ! (n->next == NULL || n->next->flags & NODE_LINE))
 		outflags &= ~MMAN_spc;
 }
 
 static int
 pre_pp(DECL_ARGS)
 {
 
 	if (MDOC_It != n->parent->tok)
 		outflags |= MMAN_PP;
 	outflags |= MMAN_sp | MMAN_nl;
 	outflags &= ~MMAN_br;
 	return 0;
 }
 
 static int
 pre_rs(DECL_ARGS)
 {
 
 	if (SEC_SEE_ALSO == n->sec) {
 		outflags |= MMAN_PP | MMAN_sp | MMAN_nl;
 		outflags &= ~MMAN_br;
 	}
 	return 1;
 }
 
 static int
 pre_skip(DECL_ARGS)
 {
 
 	return 0;
 }
 
 static int
 pre_sm(DECL_ARGS)
 {
 
 	if (NULL == n->child)
 		outflags ^= MMAN_Sm;
 	else if (0 == strcmp("on", n->child->string))
 		outflags |= MMAN_Sm;
 	else
 		outflags &= ~MMAN_Sm;
 
 	if (MMAN_Sm & outflags)
 		outflags |= MMAN_spc;
 
 	return 0;
 }
 
 static void
 pre_sp(DECL_ARGS)
 {
 	if (outflags & MMAN_PP) {
 		outflags &= ~MMAN_PP;
 		print_line(".PP", 0);
 	} else {
 		print_line(".sp", 0);
 		if (n->child != NULL)
 			print_word(n->child->string);
 	}
 	outflags |= MMAN_nl;
 }
 
 static int
 pre_sy(DECL_ARGS)
 {
 
 	font_push('B');
 	return 1;
 }
 
 static void
 pre_ta(DECL_ARGS)
 {
 	print_line(".ta", 0);
 	for (n = n->child; n != NULL; n = n->next)
 		print_word(n->string);
 	outflags |= MMAN_nl;
 }
 
 static int
 pre_vt(DECL_ARGS)
 {
 
 	if (NODE_SYNPRETTY & n->flags) {
 		switch (n->type) {
 		case ROFFT_BLOCK:
 			pre_syn(n);
 			return 1;
 		case ROFFT_BODY:
 			break;
 		default:
 			return 0;
 		}
 	}
 	font_push('I');
 	return 1;
 }
 
 static void
 post_vt(DECL_ARGS)
 {
 
 	if (n->flags & NODE_SYNPRETTY && n->type != ROFFT_BODY)
 		return;
 	font_pop();
 }
 
 static int
 pre_xr(DECL_ARGS)
 {
 
 	n = n->child;
 	if (NULL == n)
 		return 0;
 	print_node(meta, n);
 	n = n->next;
 	if (NULL == n)
 		return 0;
 	outflags &= ~MMAN_spc;
 	print_word("(");
 	print_node(meta, n);
 	print_word(")");
 	return 0;
 }
Index: vendor/mdocml/dist/mdoc_markdown.c
===================================================================
--- vendor/mdocml/dist/mdoc_markdown.c	(revision 321806)
+++ vendor/mdocml/dist/mdoc_markdown.c	(revision 321807)
@@ -1,1558 +1,1569 @@
-/*	$Id: mdoc_markdown.c,v 1.22 2017/05/30 16:31:29 schwarze Exp $ */
+/*	$Id: mdoc_markdown.c,v 1.23 2017/06/14 01:31:26 schwarze Exp $ */
 /*
  * Copyright (c) 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include 
 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc_aux.h"
 #include "mandoc.h"
 #include "roff.h"
 #include "mdoc.h"
 #include "main.h"
 
 struct	md_act {
 	int		(*cond)(struct roff_node *n);
 	int		(*pre)(struct roff_node *n);
 	void		(*post)(struct roff_node *n);
 	const char	 *prefix; /* pre-node string constant */
 	const char	 *suffix; /* post-node string constant */
 };
 
 static	void	 md_nodelist(struct roff_node *);
 static	void	 md_node(struct roff_node *);
 static	const char *md_stack(char c);
 static	void	 md_preword(void);
 static	void	 md_rawword(const char *);
 static	void	 md_word(const char *);
 static	void	 md_named(const char *);
 static	void	 md_char(unsigned char);
 static	void	 md_uri(const char *);
 
 static	int	 md_cond_head(struct roff_node *);
 static	int	 md_cond_body(struct roff_node *);
 
 static	int	 md_pre_raw(struct roff_node *);
 static	int	 md_pre_word(struct roff_node *);
 static	int	 md_pre_skip(struct roff_node *);
 static	void	 md_pre_syn(struct roff_node *);
 static	int	 md_pre_An(struct roff_node *);
 static	int	 md_pre_Ap(struct roff_node *);
 static	int	 md_pre_Bd(struct roff_node *);
 static	int	 md_pre_Bk(struct roff_node *);
 static	int	 md_pre_Bl(struct roff_node *);
 static	int	 md_pre_D1(struct roff_node *);
 static	int	 md_pre_Dl(struct roff_node *);
 static	int	 md_pre_En(struct roff_node *);
 static	int	 md_pre_Eo(struct roff_node *);
 static	int	 md_pre_Fa(struct roff_node *);
 static	int	 md_pre_Fd(struct roff_node *);
 static	int	 md_pre_Fn(struct roff_node *);
 static	int	 md_pre_Fo(struct roff_node *);
 static	int	 md_pre_In(struct roff_node *);
 static	int	 md_pre_It(struct roff_node *);
 static	int	 md_pre_Lk(struct roff_node *);
 static	int	 md_pre_Mt(struct roff_node *);
 static	int	 md_pre_Nd(struct roff_node *);
 static	int	 md_pre_Nm(struct roff_node *);
 static	int	 md_pre_No(struct roff_node *);
 static	int	 md_pre_Ns(struct roff_node *);
 static	int	 md_pre_Pp(struct roff_node *);
 static	int	 md_pre_Rs(struct roff_node *);
 static	int	 md_pre_Sh(struct roff_node *);
 static	int	 md_pre_Sm(struct roff_node *);
 static	int	 md_pre_Vt(struct roff_node *);
 static	int	 md_pre_Xr(struct roff_node *);
 static	int	 md_pre__T(struct roff_node *);
 static	int	 md_pre_br(struct roff_node *);
 
 static	void	 md_post_raw(struct roff_node *);
 static	void	 md_post_word(struct roff_node *);
 static	void	 md_post_pc(struct roff_node *);
 static	void	 md_post_Bk(struct roff_node *);
 static	void	 md_post_Bl(struct roff_node *);
 static	void	 md_post_D1(struct roff_node *);
 static	void	 md_post_En(struct roff_node *);
 static	void	 md_post_Eo(struct roff_node *);
 static	void	 md_post_Fa(struct roff_node *);
 static	void	 md_post_Fd(struct roff_node *);
 static	void	 md_post_Fl(struct roff_node *);
 static	void	 md_post_Fn(struct roff_node *);
 static	void	 md_post_Fo(struct roff_node *);
 static	void	 md_post_In(struct roff_node *);
 static	void	 md_post_It(struct roff_node *);
 static	void	 md_post_Lb(struct roff_node *);
 static	void	 md_post_Nm(struct roff_node *);
 static	void	 md_post_Pf(struct roff_node *);
 static	void	 md_post_Vt(struct roff_node *);
 static	void	 md_post__T(struct roff_node *);
 
 static	const struct md_act __md_acts[MDOC_MAX - MDOC_Dd] = {
 	{ NULL, NULL, NULL, NULL, NULL }, /* Dd */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Dt */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Os */
 	{ NULL, md_pre_Sh, NULL, NULL, NULL }, /* Sh */
 	{ NULL, md_pre_Sh, NULL, NULL, NULL }, /* Ss */
 	{ NULL, md_pre_Pp, NULL, NULL, NULL }, /* Pp */
 	{ md_cond_body, md_pre_D1, md_post_D1, NULL, NULL }, /* D1 */
 	{ md_cond_body, md_pre_Dl, md_post_D1, NULL, NULL }, /* Dl */
 	{ md_cond_body, md_pre_Bd, md_post_D1, NULL, NULL }, /* Bd */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ed */
 	{ md_cond_body, md_pre_Bl, md_post_Bl, NULL, NULL }, /* Bl */
 	{ NULL, NULL, NULL, NULL, NULL }, /* El */
 	{ NULL, md_pre_It, md_post_It, NULL, NULL }, /* It */
 	{ NULL, md_pre_raw, md_post_raw, "*", "*" }, /* Ad */
 	{ NULL, md_pre_An, NULL, NULL, NULL }, /* An */
 	{ NULL, md_pre_Ap, NULL, NULL, NULL }, /* Ap */
 	{ NULL, md_pre_raw, md_post_raw, "*", "*" }, /* Ar */
 	{ NULL, md_pre_raw, md_post_raw, "**", "**" }, /* Cd */
 	{ NULL, md_pre_raw, md_post_raw, "**", "**" }, /* Cm */
 	{ NULL, md_pre_raw, md_post_raw, "`", "`" }, /* Dv */
 	{ NULL, md_pre_raw, md_post_raw, "`", "`" }, /* Er */
 	{ NULL, md_pre_raw, md_post_raw, "`", "`" }, /* Ev */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ex */
 	{ NULL, md_pre_Fa, md_post_Fa, NULL, NULL }, /* Fa */
 	{ NULL, md_pre_Fd, md_post_Fd, "**", "**" }, /* Fd */
 	{ NULL, md_pre_raw, md_post_Fl, "**-", "**" }, /* Fl */
 	{ NULL, md_pre_Fn, md_post_Fn, NULL, NULL }, /* Fn */
 	{ NULL, md_pre_Fd, md_post_raw, "*", "*" }, /* Ft */
 	{ NULL, md_pre_raw, md_post_raw, "**", "**" }, /* Ic */
 	{ NULL, md_pre_In, md_post_In, NULL, NULL }, /* In */
 	{ NULL, md_pre_raw, md_post_raw, "`", "`" }, /* Li */
 	{ md_cond_head, md_pre_Nd, NULL, NULL, NULL }, /* Nd */
 	{ NULL, md_pre_Nm, md_post_Nm, "**", "**" }, /* Nm */
 	{ md_cond_body, md_pre_word, md_post_word, "[", "]" }, /* Op */
 	{ NULL, md_pre_Fd, md_post_raw, "*", "*" }, /* Ot */
 	{ NULL, md_pre_raw, md_post_raw, "*", "*" }, /* Pa */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Rv */
 	{ NULL, NULL, NULL, NULL, NULL }, /* St */
 	{ NULL, md_pre_raw, md_post_raw, "*", "*" }, /* Va */
 	{ NULL, md_pre_Vt, md_post_Vt, "*", "*" }, /* Vt */
 	{ NULL, md_pre_Xr, NULL, NULL, NULL }, /* Xr */
 	{ NULL, NULL, md_post_pc, NULL, NULL }, /* %A */
 	{ NULL, md_pre_raw, md_post_pc, "*", "*" }, /* %B */
 	{ NULL, NULL, md_post_pc, NULL, NULL }, /* %D */
 	{ NULL, md_pre_raw, md_post_pc, "*", "*" }, /* %I */
 	{ NULL, md_pre_raw, md_post_pc, "*", "*" }, /* %J */
 	{ NULL, NULL, md_post_pc, NULL, NULL }, /* %N */
 	{ NULL, NULL, md_post_pc, NULL, NULL }, /* %O */
 	{ NULL, NULL, md_post_pc, NULL, NULL }, /* %P */
 	{ NULL, NULL, md_post_pc, NULL, NULL }, /* %R */
 	{ NULL, md_pre__T, md_post__T, NULL, NULL }, /* %T */
 	{ NULL, NULL, md_post_pc, NULL, NULL }, /* %V */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ac */
 	{ md_cond_body, md_pre_word, md_post_word, "<", ">" }, /* Ao */
 	{ md_cond_body, md_pre_word, md_post_word, "<", ">" }, /* Aq */
 	{ NULL, NULL, NULL, NULL, NULL }, /* At */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Bc */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Bf XXX not implemented */
 	{ md_cond_body, md_pre_word, md_post_word, "[", "]" }, /* Bo */
 	{ md_cond_body, md_pre_word, md_post_word, "[", "]" }, /* Bq */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Bsx */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Bx */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Db */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Dc */
 	{ md_cond_body, md_pre_word, md_post_word, "\"", "\"" }, /* Do */
 	{ md_cond_body, md_pre_word, md_post_word, "\"", "\"" }, /* Dq */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ec */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ef */
 	{ NULL, md_pre_raw, md_post_raw, "*", "*" }, /* Em */
 	{ md_cond_body, md_pre_Eo, md_post_Eo, NULL, NULL }, /* Eo */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Fx */
 	{ NULL, md_pre_raw, md_post_raw, "**", "**" }, /* Ms */
 	{ NULL, md_pre_No, NULL, NULL, NULL }, /* No */
 	{ NULL, md_pre_Ns, NULL, NULL, NULL }, /* Ns */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Nx */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ox */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Pc */
 	{ NULL, NULL, md_post_Pf, NULL, NULL }, /* Pf */
 	{ md_cond_body, md_pre_word, md_post_word, "(", ")" }, /* Po */
 	{ md_cond_body, md_pre_word, md_post_word, "(", ")" }, /* Pq */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Qc */
 	{ md_cond_body, md_pre_raw, md_post_raw, "'`", "`'" }, /* Ql */
 	{ md_cond_body, md_pre_word, md_post_word, "\"", "\"" }, /* Qo */
 	{ md_cond_body, md_pre_word, md_post_word, "\"", "\"" }, /* Qq */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Re */
 	{ md_cond_body, md_pre_Rs, NULL, NULL, NULL }, /* Rs */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Sc */
 	{ md_cond_body, md_pre_word, md_post_word, "'", "'" }, /* So */
 	{ md_cond_body, md_pre_word, md_post_word, "'", "'" }, /* Sq */
 	{ NULL, md_pre_Sm, NULL, NULL, NULL }, /* Sm */
 	{ NULL, md_pre_raw, md_post_raw, "*", "*" }, /* Sx */
 	{ NULL, md_pre_raw, md_post_raw, "**", "**" }, /* Sy */
 	{ NULL, md_pre_raw, md_post_raw, "`", "`" }, /* Tn */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ux */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Xc */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Xo */
 	{ NULL, md_pre_Fo, md_post_Fo, "**", "**" }, /* Fo */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Fc */
 	{ md_cond_body, md_pre_word, md_post_word, "[", "]" }, /* Oo */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Oc */
 	{ NULL, md_pre_Bk, md_post_Bk, NULL, NULL }, /* Bk */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ek */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Bt */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Hf */
 	{ NULL, md_pre_raw, md_post_raw, "*", "*" }, /* Fr */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ud */
 	{ NULL, NULL, md_post_Lb, NULL, NULL }, /* Lb */
 	{ NULL, md_pre_Pp, NULL, NULL, NULL }, /* Lp */
 	{ NULL, md_pre_Lk, NULL, NULL, NULL }, /* Lk */
 	{ NULL, md_pre_Mt, NULL, NULL, NULL }, /* Mt */
 	{ md_cond_body, md_pre_word, md_post_word, "{", "}" }, /* Brq */
 	{ md_cond_body, md_pre_word, md_post_word, "{", "}" }, /* Bro */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Brc */
 	{ NULL, NULL, md_post_pc, NULL, NULL }, /* %C */
 	{ NULL, md_pre_skip, NULL, NULL, NULL }, /* Es */
 	{ md_cond_body, md_pre_En, md_post_En, NULL, NULL }, /* En */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Dx */
 	{ NULL, NULL, md_post_pc, NULL, NULL }, /* %Q */
 	{ NULL, md_pre_Lk, md_post_pc, NULL, NULL }, /* %U */
 	{ NULL, NULL, NULL, NULL, NULL }, /* Ta */
 };
 static	const struct md_act *const md_acts = __md_acts - MDOC_Dd;
 
 static	int	 outflags;
 #define	MD_spc		 (1 << 0)  /* Blank character before next word. */
 #define	MD_spc_force	 (1 << 1)  /* Even before trailing punctuation. */
 #define	MD_nonl		 (1 << 2)  /* Prevent linebreak in markdown code. */
 #define	MD_nl		 (1 << 3)  /* Break markdown code line. */
 #define	MD_br		 (1 << 4)  /* Insert an output line break. */
 #define	MD_sp		 (1 << 5)  /* Insert a paragraph break. */
 #define	MD_Sm		 (1 << 6)  /* Horizontal spacing mode. */
 #define	MD_Bk		 (1 << 7)  /* Word keep mode. */
 #define	MD_An_split	 (1 << 8)  /* Author mode is "split". */
 #define	MD_An_nosplit	 (1 << 9)  /* Author mode is "nosplit". */
 
 static	int	 escflags; /* Escape in generated markdown code: */
 #define	ESC_BOL	 (1 << 0)  /* "#*+-" near the beginning of a line. */
 #define	ESC_NUM	 (1 << 1)  /* "." after a leading number. */
 #define	ESC_HYP	 (1 << 2)  /* "(" immediately after "]". */
 #define	ESC_SQU	 (1 << 4)  /* "]" when "[" is open. */
 #define	ESC_FON	 (1 << 5)  /* "*" immediately after unrelated "*". */
 #define	ESC_EOL	 (1 << 6)  /* " " at the and of a line. */
 
 static	int	 code_blocks, quote_blocks, list_blocks;
 static	int	 outcount;
 
 void
 markdown_mdoc(void *arg, const struct roff_man *mdoc)
 {
 	outflags = MD_Sm;
 	md_word(mdoc->meta.title);
 	if (mdoc->meta.msec != NULL) {
 		outflags &= ~MD_spc;
 		md_word("(");
 		md_word(mdoc->meta.msec);
 		md_word(")");
 	}
 	md_word("-");
 	md_word(mdoc->meta.vol);
 	if (mdoc->meta.arch != NULL) {
 		md_word("(");
 		md_word(mdoc->meta.arch);
 		md_word(")");
 	}
 	outflags |= MD_sp;
 
 	md_nodelist(mdoc->first->child);
 
 	outflags |= MD_sp;
 	md_word(mdoc->meta.os);
 	md_word("-");
 	md_word(mdoc->meta.date);
 	putchar('\n');
 }
 
 static void
 md_nodelist(struct roff_node *n)
 {
 	while (n != NULL) {
 		md_node(n);
 		n = n->next;
 	}
 }
 
 static void
 md_node(struct roff_node *n)
 {
 	const struct md_act	*act;
 	int			 cond, process_children;
 
 	if (n->flags & NODE_NOPRT)
 		return;
 
 	if (outflags & MD_nonl)
 		outflags &= ~(MD_nl | MD_sp);
 	else if (outflags & MD_spc && n->flags & NODE_LINE)
 		outflags |= MD_nl;
 
 	act = NULL;
 	cond = 0;
 	process_children = 1;
 	n->flags &= ~NODE_ENDED;
 
 	if (n->type == ROFFT_TEXT) {
 		if (n->flags & NODE_DELIMC)
 			outflags &= ~(MD_spc | MD_spc_force);
 		else if (outflags & MD_Sm)
 			outflags |= MD_spc_force;
 		md_word(n->string);
 		if (n->flags & NODE_DELIMO)
 			outflags &= ~(MD_spc | MD_spc_force);
 		else if (outflags & MD_Sm)
 			outflags |= MD_spc;
 	} else if (n->tok < ROFF_MAX) {
 		switch (n->tok) {
 		case ROFF_br:
 			process_children = md_pre_br(n);
 			break;
 		case ROFF_sp:
 			process_children = md_pre_Pp(n);
 			break;
 		default:
 			process_children = 0;
 			break;
 		}
 	} else {
 		assert(n->tok >= MDOC_Dd && n->tok < MDOC_MAX);
 		act = md_acts + n->tok;
 		cond = act->cond == NULL || (*act->cond)(n);
 		if (cond && act->pre != NULL &&
 		    (n->end == ENDBODY_NOT || n->child != NULL))
 			process_children = (*act->pre)(n);
 	}
 
 	if (process_children && n->child != NULL)
 		md_nodelist(n->child);
 
 	if (n->flags & NODE_ENDED)
 		return;
 
 	if (cond && act->post != NULL)
 		(*act->post)(n);
 
 	if (n->end != ENDBODY_NOT)
 		n->body->flags |= NODE_ENDED;
 }
 
 static const char *
 md_stack(char c)
 {
 	static char	*stack;
 	static size_t	 sz;
 	static size_t	 cur;
 
 	switch (c) {
 	case '\0':
 		break;
 	case (char)-1:
 		assert(cur);
 		stack[--cur] = '\0';
 		break;
 	default:
 		if (cur + 1 >= sz) {
 			sz += 8;
 			stack = mandoc_realloc(stack, sz);
 		}
 		stack[cur] = c;
 		stack[++cur] = '\0';
 		break;
 	}
 	return stack == NULL ? "" : stack;
 }
 
 /*
  * Handle vertical and horizontal spacing.
  */
 static void
 md_preword(void)
 {
 	const char	*cp;
 
 	/*
 	 * If a list block is nested inside a code block or a blockquote,
 	 * blank lines for paragraph breaks no longer work; instead,
 	 * they terminate the list.  Work around this markdown issue
 	 * by using mere line breaks instead.
 	 */
 
 	if (list_blocks && outflags & MD_sp) {
 		outflags &= ~MD_sp;
 		outflags |= MD_br;
 	}
 
 	/*
 	 * End the old line if requested.
 	 * Escape whitespace at the end of the markdown line
 	 * such that it won't look like an output line break.
 	 */
 
 	if (outflags & MD_sp)
 		putchar('\n');
 	else if (outflags & MD_br) {
 		putchar(' ');
 		putchar(' ');
 	} else if (outflags & MD_nl && escflags & ESC_EOL)
 		md_named("zwnj");
 
 	/* Start a new line if necessary. */
 
 	if (outflags & (MD_nl | MD_br | MD_sp)) {
 		putchar('\n');
 		for (cp = md_stack('\0'); *cp != '\0'; cp++) {
 			putchar(*cp);
 			if (*cp == '>')
 				putchar(' ');
 		}
 		outflags &= ~(MD_nl | MD_br | MD_sp);
 		escflags = ESC_BOL;
 		outcount = 0;
 
 	/* Handle horizontal spacing. */
 
 	} else if (outflags & MD_spc) {
 		if (outflags & MD_Bk)
 			fputs(" ", stdout);
 		else
 			putchar(' ');
 		escflags &= ~ESC_FON;
 		outcount++;
 	}
 
 	outflags &= ~(MD_spc_force | MD_nonl);
 	if (outflags & MD_Sm)
 		outflags |= MD_spc;
 	else
 		outflags &= ~MD_spc;
 }
 
 /*
  * Print markdown syntax elements.
  * Can also be used for constant strings when neither escaping
  * nor delimiter handling is required.
  */
 static void
 md_rawword(const char *s)
 {
 	md_preword();
 
 	if (*s == '\0')
 		return;
 
 	if (escflags & ESC_FON) {
 		escflags &= ~ESC_FON;
 		if (*s == '*' && !code_blocks)
 			fputs("‌", stdout);
 	}
 
 	while (*s != '\0') {
 		switch(*s) {
 		case '*':
 			if (s[1] == '\0')
 				escflags |= ESC_FON;
 			break;
 		case '[':
 			escflags |= ESC_SQU;
 			break;
 		case ']':
 			escflags |= ESC_HYP;
 			escflags &= ~ESC_SQU;
 			break;
 		default:
 			break;
 		}
 		md_char(*s++);
 	}
 	if (s[-1] == ' ')
 		escflags |= ESC_EOL;
 	else
 		escflags &= ~ESC_EOL;
 }
 
 /*
  * Print text and mdoc(7) syntax elements.
  */
 static void
 md_word(const char *s)
 {
 	const char	*seq, *prevfont, *currfont, *nextfont;
 	char		 c;
-	int		 bs, sz, uc;
+	int		 bs, sz, uc, breakline;
 
 	/* No spacing before closing delimiters. */
 	if (s[0] != '\0' && s[1] == '\0' &&
 	    strchr("!),.:;?]", s[0]) != NULL &&
 	    (outflags & MD_spc_force) == 0)
 		outflags &= ~MD_spc;
 
 	md_preword();
 
 	if (*s == '\0')
 		return;
 
 	/* No spacing after opening delimiters. */
 	if ((s[0] == '(' || s[0] == '[') && s[1] == '\0')
 		outflags &= ~MD_spc;
 
+	breakline = 0;
 	prevfont = currfont = "";
 	while ((c = *s++) != '\0') {
 		bs = 0;
 		switch(c) {
 		case ASCII_NBRSP:
 			if (code_blocks)
 				c = ' ';
 			else {
 				md_named("nbsp");
 				c = '\0';
 			}
 			break;
 		case ASCII_HYPH:
 			bs = escflags & ESC_BOL && !code_blocks;
 			c = '-';
 			break;
 		case ASCII_BREAK:
 			continue;
 		case '#':
 		case '+':
 		case '-':
 			bs = escflags & ESC_BOL && !code_blocks;
 			break;
 		case '(':
 			bs = escflags & ESC_HYP && !code_blocks;
 			break;
 		case ')':
 			bs = escflags & ESC_NUM && !code_blocks;
 			break;
 		case '*':
 		case '[':
 		case '_':
 		case '`':
 			bs = !code_blocks;
 			break;
 		case '.':
 			bs = escflags & ESC_NUM && !code_blocks;
 			break;
 		case '<':
 			if (code_blocks == 0) {
 				md_named("lt");
 				c = '\0';
 			}
 			break;
 		case '=':
 			if (escflags & ESC_BOL && !code_blocks) {
 				md_named("equals");
 				c = '\0';
 			}
 			break;
 		case '>':
 			if (code_blocks == 0) {
 				md_named("gt");
 				c = '\0';
 			}
 			break;
 		case '\\':
 			uc = 0;
 			nextfont = NULL;
 			switch (mandoc_escape(&s, &seq, &sz)) {
 			case ESCAPE_UNICODE:
 				uc = mchars_num2uc(seq + 1, sz - 1);
 				break;
 			case ESCAPE_NUMBERED:
 				uc = mchars_num2char(seq, sz);
 				break;
 			case ESCAPE_SPECIAL:
 				uc = mchars_spec2cp(seq, sz);
 				break;
 			case ESCAPE_FONTBOLD:
 				nextfont = "**";
 				break;
 			case ESCAPE_FONTITALIC:
 				nextfont = "*";
 				break;
 			case ESCAPE_FONTBI:
 				nextfont = "***";
 				break;
 			case ESCAPE_FONT:
 			case ESCAPE_FONTROMAN:
 				nextfont = "";
 				break;
 			case ESCAPE_FONTPREV:
 				nextfont = prevfont;
 				break;
+			case ESCAPE_BREAK:
+				breakline = 1;
+				break;
 			case ESCAPE_NOSPACE:
 			case ESCAPE_SKIPCHAR:
 			case ESCAPE_OVERSTRIKE:
 				/* XXX not implemented */
 				/* FALLTHROUGH */
 			case ESCAPE_ERROR:
 			default:
 				break;
 			}
 			if (nextfont != NULL && !code_blocks) {
 				if (*currfont != '\0') {
 					outflags &= ~MD_spc;
 					md_rawword(currfont);
 				}
 				prevfont = currfont;
 				currfont = nextfont;
 				if (*currfont != '\0') {
 					outflags &= ~MD_spc;
 					md_rawword(currfont);
 				}
 			}
 			if (uc) {
 				if ((uc < 0x20 && uc != 0x09) ||
 				    (uc > 0x7E && uc < 0xA0))
 					uc = 0xFFFD;
 				if (code_blocks) {
 					seq = mchars_uc2str(uc);
 					fputs(seq, stdout);
 					outcount += strlen(seq);
 				} else {
 					printf("&#%d;", uc);
 					outcount++;
 				}
 				escflags &= ~ESC_FON;
 			}
 			c = '\0';
 			break;
 		case ']':
 			bs = escflags & ESC_SQU && !code_blocks;
 			escflags |= ESC_HYP;
 			break;
 		default:
 			break;
 		}
 		if (bs)
 			putchar('\\');
 		md_char(c);
+		if (breakline &&
+		    (*s == '\0' || *s == ' ' || *s == ASCII_NBRSP)) {
+			printf("  \n");
+			breakline = 0;
+			while (*s == ' ' || *s == ASCII_NBRSP)
+				s++;
+		}
 	}
 	if (*currfont != '\0') {
 		outflags &= ~MD_spc;
 		md_rawword(currfont);
 	} else if (s[-2] == ' ')
 		escflags |= ESC_EOL;
 	else
 		escflags &= ~ESC_EOL;
 }
 
 /*
  * Print a single HTML named character reference.
  */
 static void
 md_named(const char *s)
 {
 	printf("&%s;", s);
 	escflags &= ~(ESC_FON | ESC_EOL);
 	outcount++;
 }
 
 /*
  * Print a single raw character and maintain certain escape flags.
  */
 static void
 md_char(unsigned char c)
 {
 	if (c != '\0') {
 		putchar(c);
 		if (c == '*')
 			escflags |= ESC_FON;
 		else
 			escflags &= ~ESC_FON;
 		outcount++;
 	}
 	if (c != ']')
 		escflags &= ~ESC_HYP;
 	if (c == ' ' || c == '\t' || c == '>')
 		return;
 	if (isdigit(c) == 0)
 		escflags &= ~ESC_NUM;
 	else if (escflags & ESC_BOL)
 		escflags |= ESC_NUM;
 	escflags &= ~ESC_BOL;
 }
 
 static int
 md_cond_head(struct roff_node *n)
 {
 	return n->type == ROFFT_HEAD;
 }
 
 static int
 md_cond_body(struct roff_node *n)
 {
 	return n->type == ROFFT_BODY;
 }
 
 static int
 md_pre_raw(struct roff_node *n)
 {
 	const char	*prefix;
 
 	if ((prefix = md_acts[n->tok].prefix) != NULL) {
 		md_rawword(prefix);
 		outflags &= ~MD_spc;
 		if (*prefix == '`')
 			code_blocks++;
 	}
 	return 1;
 }
 
 static void
 md_post_raw(struct roff_node *n)
 {
 	const char	*suffix;
 
 	if ((suffix = md_acts[n->tok].suffix) != NULL) {
 		outflags &= ~(MD_spc | MD_nl);
 		md_rawword(suffix);
 		if (*suffix == '`')
 			code_blocks--;
 	}
 }
 
 static int
 md_pre_word(struct roff_node *n)
 {
 	const char	*prefix;
 
 	if ((prefix = md_acts[n->tok].prefix) != NULL) {
 		md_word(prefix);
 		outflags &= ~MD_spc;
 	}
 	return 1;
 }
 
 static void
 md_post_word(struct roff_node *n)
 {
 	const char	*suffix;
 
 	if ((suffix = md_acts[n->tok].suffix) != NULL) {
 		outflags &= ~(MD_spc | MD_nl);
 		md_word(suffix);
 	}
 }
 
 static void
 md_post_pc(struct roff_node *n)
 {
 	md_post_raw(n);
 	if (n->parent->tok != MDOC_Rs)
 		return;
 	if (n->next != NULL) {
 		md_word(",");
 		if (n->prev != NULL &&
 		    n->prev->tok == n->tok &&
 		    n->next->tok == n->tok)
 			md_word("and");
 	} else {
 		md_word(".");
 		outflags |= MD_nl;
 	}
 }
 
 static int
 md_pre_skip(struct roff_node *n)
 {
 	return 0;
 }
 
 static void
 md_pre_syn(struct roff_node *n)
 {
 	if (n->prev == NULL || ! (n->flags & NODE_SYNPRETTY))
 		return;
 
 	if (n->prev->tok == n->tok &&
 	    n->tok != MDOC_Ft &&
 	    n->tok != MDOC_Fo &&
 	    n->tok != MDOC_Fn) {
 		outflags |= MD_br;
 		return;
 	}
 
 	switch (n->prev->tok) {
 	case MDOC_Fd:
 	case MDOC_Fn:
 	case MDOC_Fo:
 	case MDOC_In:
 	case MDOC_Vt:
 		outflags |= MD_sp;
 		break;
 	case MDOC_Ft:
 		if (n->tok != MDOC_Fn && n->tok != MDOC_Fo) {
 			outflags |= MD_sp;
 			break;
 		}
 		/* FALLTHROUGH */
 	default:
 		outflags |= MD_br;
 		break;
 	}
 }
 
 static int
 md_pre_An(struct roff_node *n)
 {
 	switch (n->norm->An.auth) {
 	case AUTH_split:
 		outflags &= ~MD_An_nosplit;
 		outflags |= MD_An_split;
 		return 0;
 	case AUTH_nosplit:
 		outflags &= ~MD_An_split;
 		outflags |= MD_An_nosplit;
 		return 0;
 	default:
 		if (outflags & MD_An_split)
 			outflags |= MD_br;
 		else if (n->sec == SEC_AUTHORS &&
 		    ! (outflags & MD_An_nosplit))
 			outflags |= MD_An_split;
 		return 1;
 	}
 }
 
 static int
 md_pre_Ap(struct roff_node *n)
 {
 	outflags &= ~MD_spc;
 	md_word("'");
 	outflags &= ~MD_spc;
 	return 0;
 }
 
 static int
 md_pre_Bd(struct roff_node *n)
 {
 	switch (n->norm->Bd.type) {
 	case DISP_unfilled:
 	case DISP_literal:
 		return md_pre_Dl(n);
 	default:
 		return md_pre_D1(n);
 	}
 }
 
 static int
 md_pre_Bk(struct roff_node *n)
 {
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		return 1;
 	case ROFFT_BODY:
 		outflags |= MD_Bk;
 		return 1;
 	default:
 		return 0;
 	}
 }
 
 static void
 md_post_Bk(struct roff_node *n)
 {
 	if (n->type == ROFFT_BODY)
 		outflags &= ~MD_Bk;
 }
 
 static int
 md_pre_Bl(struct roff_node *n)
 {
 	n->norm->Bl.count = 0;
 	if (n->norm->Bl.type == LIST_column)
 		md_pre_Dl(n);
 	outflags |= MD_sp;
 	return 1;
 }
 
 static void
 md_post_Bl(struct roff_node *n)
 {
 	n->norm->Bl.count = 0;
 	if (n->norm->Bl.type == LIST_column)
 		md_post_D1(n);
 	outflags |= MD_sp;
 }
 
 static int
 md_pre_D1(struct roff_node *n)
 {
 	/*
 	 * Markdown blockquote syntax does not work inside code blocks.
 	 * The best we can do is fall back to another nested code block.
 	 */
 	if (code_blocks) {
 		md_stack('\t');
 		code_blocks++;
 	} else {
 		md_stack('>');
 		quote_blocks++;
 	}
 	outflags |= MD_sp;
 	return 1;
 }
 
 static void
 md_post_D1(struct roff_node *n)
 {
 	md_stack((char)-1);
 	if (code_blocks)
 		code_blocks--;
 	else
 		quote_blocks--;
 	outflags |= MD_sp;
 }
 
 static int
 md_pre_Dl(struct roff_node *n)
 {
 	/*
 	 * Markdown code block syntax does not work inside blockquotes.
 	 * The best we can do is fall back to another nested blockquote.
 	 */
 	if (quote_blocks) {
 		md_stack('>');
 		quote_blocks++;
 	} else {
 		md_stack('\t');
 		code_blocks++;
 	}
 	outflags |= MD_sp;
 	return 1;
 }
 
 static int
 md_pre_En(struct roff_node *n)
 {
 	if (n->norm->Es == NULL ||
 	    n->norm->Es->child == NULL)
 		return 1;
 
 	md_word(n->norm->Es->child->string);
 	outflags &= ~MD_spc;
 	return 1;
 }
 
 static void
 md_post_En(struct roff_node *n)
 {
 	if (n->norm->Es == NULL ||
 	    n->norm->Es->child == NULL ||
 	    n->norm->Es->child->next == NULL)
 		return;
 
 	outflags &= ~MD_spc;
 	md_word(n->norm->Es->child->next->string);
 }
 
 static int
 md_pre_Eo(struct roff_node *n)
 {
 	if (n->end == ENDBODY_NOT &&
 	    n->parent->head->child == NULL &&
 	    n->child != NULL &&
 	    n->child->end != ENDBODY_NOT)
 		md_preword();
 	else if (n->end != ENDBODY_NOT ? n->child != NULL :
 	    n->parent->head->child != NULL && (n->child != NULL ||
 	    (n->parent->tail != NULL && n->parent->tail->child != NULL)))
 		outflags &= ~(MD_spc | MD_nl);
 	return 1;
 }
 
 static void
 md_post_Eo(struct roff_node *n)
 {
 	if (n->end != ENDBODY_NOT) {
 		outflags |= MD_spc;
 		return;
 	}
 
 	if (n->child == NULL && n->parent->head->child == NULL)
 		return;
 
 	if (n->parent->tail != NULL && n->parent->tail->child != NULL)
 		outflags &= ~MD_spc;
         else
 		outflags |= MD_spc;
 }
 
 static int
 md_pre_Fa(struct roff_node *n)
 {
 	int	 am_Fa;
 
 	am_Fa = n->tok == MDOC_Fa;
 
 	if (am_Fa)
 		n = n->child;
 
 	while (n != NULL) {
 		md_rawword("*");
 		outflags &= ~MD_spc;
 		md_node(n);
 		outflags &= ~MD_spc;
 		md_rawword("*");
 		if ((n = n->next) != NULL)
 			md_word(",");
 	}
 	return 0;
 }
 
 static void
 md_post_Fa(struct roff_node *n)
 {
 	if (n->next != NULL && n->next->tok == MDOC_Fa)
 		md_word(",");
 }
 
 static int
 md_pre_Fd(struct roff_node *n)
 {
 	md_pre_syn(n);
 	md_pre_raw(n);
 	return 1;
 }
 
 static void
 md_post_Fd(struct roff_node *n)
 {
 	md_post_raw(n);
 	outflags |= MD_br;
 }
 
 static void
 md_post_Fl(struct roff_node *n)
 {
 	md_post_raw(n);
 	if (n->child == NULL && n->next != NULL &&
 	    n->next->type != ROFFT_TEXT && !(n->next->flags & NODE_LINE))
 		outflags &= ~MD_spc;
 }
 
 static int
 md_pre_Fn(struct roff_node *n)
 {
 	md_pre_syn(n);
 
 	if ((n = n->child) == NULL)
 		return 0;
 
 	md_rawword("**");
 	outflags &= ~MD_spc;
 	md_node(n);
 	outflags &= ~MD_spc;
 	md_rawword("**");
 	outflags &= ~MD_spc;
 	md_word("(");
 
 	if ((n = n->next) != NULL)
 		md_pre_Fa(n);
 	return 0;
 }
 
 static void
 md_post_Fn(struct roff_node *n)
 {
 	md_word(")");
 	if (n->flags & NODE_SYNPRETTY) {
 		md_word(";");
 		outflags |= MD_sp;
 	}
 }
 
 static int
 md_pre_Fo(struct roff_node *n)
 {
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		md_pre_syn(n);
 		break;
 	case ROFFT_HEAD:
 		if (n->child == NULL)
 			return 0;
 		md_pre_raw(n);
 		break;
 	case ROFFT_BODY:
 		outflags &= ~(MD_spc | MD_nl);
 		md_word("(");
 		break;
 	default:
 		break;
 	}
 	return 1;
 }
 
 static void
 md_post_Fo(struct roff_node *n)
 {
 	switch (n->type) {
 	case ROFFT_HEAD:
 		if (n->child != NULL)
 			md_post_raw(n);
 		break;
 	case ROFFT_BODY:
 		md_post_Fn(n);
 		break;
 	default:
 		break;
 	}
 }
 
 static int
 md_pre_In(struct roff_node *n)
 {
 	if (n->flags & NODE_SYNPRETTY) {
 		md_pre_syn(n);
 		md_rawword("**");
 		outflags &= ~MD_spc;
 		md_word("#include <");
 	} else {
 		md_word("<");
 		outflags &= ~MD_spc;
 		md_rawword("*");
 	}
 	outflags &= ~MD_spc;
 	return 1;
 }
 
 static void
 md_post_In(struct roff_node *n)
 {
 	if (n->flags & NODE_SYNPRETTY) {
 		outflags &= ~MD_spc;
 		md_rawword(">**");
 		outflags |= MD_nl;
 	} else {
 		outflags &= ~MD_spc;
 		md_rawword("*>");
 	}
 }
 
 static int
 md_pre_It(struct roff_node *n)
 {
 	struct roff_node	*bln;
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		return 1;
 
 	case ROFFT_HEAD:
 		bln = n->parent->parent;
 		if (bln->norm->Bl.comp == 0 &&
 		    bln->norm->Bl.type != LIST_column)
 			outflags |= MD_sp;
 		outflags |= MD_nl;
 
 		switch (bln->norm->Bl.type) {
 		case LIST_item:
 			outflags |= MD_br;
 			return 0;
 		case LIST_inset:
 		case LIST_diag:
 		case LIST_ohang:
 			outflags |= MD_br;
 			return 1;
 		case LIST_tag:
 		case LIST_hang:
 			outflags |= MD_sp;
 			return 1;
 		case LIST_bullet:
 			md_rawword("*\t");
 			break;
 		case LIST_dash:
 		case LIST_hyphen:
 			md_rawword("-\t");
 			break;
 		case LIST_enum:
 			md_preword();
 			if (bln->norm->Bl.count < 99)
 				bln->norm->Bl.count++;
 			printf("%d.\t", bln->norm->Bl.count);
 			escflags &= ~ESC_FON;
 			break;
 		case LIST_column:
 			outflags |= MD_br;
 			return 0;
 		default:
 			return 0;
 		}
 		outflags &= ~MD_spc;
 		outflags |= MD_nonl;
 		outcount = 0;
 		md_stack('\t');
 		if (code_blocks || quote_blocks)
 			list_blocks++;
 		return 0;
 
 	case ROFFT_BODY:
 		bln = n->parent->parent;
 		switch (bln->norm->Bl.type) {
 		case LIST_ohang:
 			outflags |= MD_br;
 			break;
 		case LIST_tag:
 		case LIST_hang:
 			md_pre_D1(n);
 			break;
 		default:
 			break;
 		}
 		return 1;
 
 	default:
 		return 0;
 	}
 }
 
 static void
 md_post_It(struct roff_node *n)
 {
 	struct roff_node	*bln;
 	int			 i, nc;
 
 	if (n->type != ROFFT_BODY)
 		return;
 
 	bln = n->parent->parent;
 	switch (bln->norm->Bl.type) {
 	case LIST_bullet:
 	case LIST_dash:
 	case LIST_hyphen:
 	case LIST_enum:
 		md_stack((char)-1);
 		if (code_blocks || quote_blocks)
 			list_blocks--;
 		break;
 	case LIST_tag:
 	case LIST_hang:
 		md_post_D1(n);
 		break;
 
 	case LIST_column:
 		if (n->next == NULL)
 			break;
 
 		/* Calculate the array index of the current column. */
 
 		i = 0;
 		while ((n = n->prev) != NULL && n->type != ROFFT_HEAD)
 			i++;
 
 		/* 
 		 * If a width was specified for this column,
 		 * subtract what printed, and
 		 * add the same spacing as in mdoc_term.c.
 		 */
 
 		nc = bln->norm->Bl.ncols;
 		i = i < nc ? strlen(bln->norm->Bl.cols[i]) - outcount +
 		    (nc < 5 ? 4 : nc == 5 ? 3 : 1) : 1;
 		if (i < 1)
 			i = 1;
 		while (i-- > 0)
 			putchar(' ');
 
 		outflags &= ~MD_spc;
 		escflags &= ~ESC_FON;
 		outcount = 0;
 		break;
 
 	default:
 		break;
 	}
 }
 
 static void
 md_post_Lb(struct roff_node *n)
 {
 	if (n->sec == SEC_LIBRARY)
 		outflags |= MD_br;
 }
 
 static void
 md_uri(const char *s)
 {
 	while (*s != '\0') {
 		if (strchr("%()<>", *s) != NULL) {
 			printf("%%%2.2hhX", *s);
 			outcount += 3;
 		} else {
 			putchar(*s);
 			outcount++;
 		}
 		s++;
 	}
 }
 
 static int
 md_pre_Lk(struct roff_node *n)
 {
 	const struct roff_node *link, *descr, *punct;
 
 	if ((link = n->child) == NULL)
 		return 0;
 
 	/* Find beginning of trailing punctuation. */
 	punct = n->last;
 	while (punct != link && punct->flags & NODE_DELIMC)
 		punct = punct->prev;
 	punct = punct->next;
 
 	/* Link text. */
 	descr = link->next;
 	if (descr == punct)
 		descr = link;  /* no text */
 	md_rawword("[");
 	outflags &= ~MD_spc;
 	do {
 		md_word(descr->string);
 		descr = descr->next;
 	} while (descr != punct);
 	outflags &= ~MD_spc;
 
 	/* Link target. */
 	md_rawword("](");
 	md_uri(link->string);
 	outflags &= ~MD_spc;
 	md_rawword(")");
 
 	/* Trailing punctuation. */
 	while (punct != NULL) {
 		md_word(punct->string);
 		punct = punct->next;
 	}
 	return 0;
 }
 
 static int
 md_pre_Mt(struct roff_node *n)
 {
 	const struct roff_node *nch;
 
 	md_rawword("[");
 	outflags &= ~MD_spc;
 	for (nch = n->child; nch != NULL; nch = nch->next)
 		md_word(nch->string);
 	outflags &= ~MD_spc;
 	md_rawword("](mailto:");
 	for (nch = n->child; nch != NULL; nch = nch->next) {
 		md_uri(nch->string);
 		if (nch->next != NULL) {
 			putchar(' ');
 			outcount++;
 		}
 	}
 	outflags &= ~MD_spc;
 	md_rawword(")");
 	return 0;
 }
 
 static int
 md_pre_Nd(struct roff_node *n)
 {
 	outflags &= ~MD_nl;
 	outflags |= MD_spc;
 	md_word("-");
 	return 1;
 }
 
 static int
 md_pre_Nm(struct roff_node *n)
 {
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		outflags |= MD_Bk;
 		md_pre_syn(n);
 		break;
 	case ROFFT_HEAD:
 	case ROFFT_ELEM:
 		md_pre_raw(n);
 		break;
 	default:
 		break;
 	}
 	return 1;
 }
 
 static void
 md_post_Nm(struct roff_node *n)
 {
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		outflags &= ~MD_Bk;
 		break;
 	case ROFFT_HEAD:
 	case ROFFT_ELEM:
 		md_post_raw(n);
 		break;
 	default:
 		break;
 	}
 }
 
 static int
 md_pre_No(struct roff_node *n)
 {
 	outflags |= MD_spc_force;
 	return 1;
 }
 
 static int
 md_pre_Ns(struct roff_node *n)
 {
 	outflags &= ~MD_spc;
 	return 0;
 }
 
 static void
 md_post_Pf(struct roff_node *n)
 {
 	if (n->next != NULL && (n->next->flags & NODE_LINE) == 0)
 		outflags &= ~MD_spc;
 }
 
 static int
 md_pre_Pp(struct roff_node *n)
 {
 	outflags |= MD_sp;
 	return 0;
 }
 
 static int
 md_pre_Rs(struct roff_node *n)
 {
 	if (n->sec == SEC_SEE_ALSO)
 		outflags |= MD_sp;
 	return 1;
 }
 
 static int
 md_pre_Sh(struct roff_node *n)
 {
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		if (n->sec == SEC_AUTHORS)
 			outflags &= ~(MD_An_split | MD_An_nosplit);
 		break;
 	case ROFFT_HEAD:
 		outflags |= MD_sp;
 		md_rawword(n->tok == MDOC_Sh ? "#" : "##");
 		break;
 	case ROFFT_BODY:
 		outflags |= MD_sp;
 		break;
 	default:
 		break;
 	}
 	return 1;
 }
 
 static int
 md_pre_Sm(struct roff_node *n)
 {
 	if (n->child == NULL)
 		outflags ^= MD_Sm;
 	else if (strcmp("on", n->child->string) == 0)
 		outflags |= MD_Sm;
 	else
 		outflags &= ~MD_Sm;
 
 	if (outflags & MD_Sm)
 		outflags |= MD_spc;
 
 	return 0;
 }
 
 static int
 md_pre_Vt(struct roff_node *n)
 {
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		md_pre_syn(n);
 		return 1;
 	case ROFFT_BODY:
 	case ROFFT_ELEM:
 		md_pre_raw(n);
 		return 1;
 	default:
 		return 0;
 	}
 }
 
 static void
 md_post_Vt(struct roff_node *n)
 {
 	switch (n->type) {
 	case ROFFT_BODY:
 	case ROFFT_ELEM:
 		md_post_raw(n);
 		break;
 	default:
 		break;
 	}
 }
 
 static int
 md_pre_Xr(struct roff_node *n)
 {
 	n = n->child;
 	if (n == NULL)
 		return 0;
 	md_node(n);
 	n = n->next;
 	if (n == NULL)
 		return 0;
 	outflags &= ~MD_spc;
 	md_word("(");
 	md_node(n);
 	md_word(")");
 	return 0;
 }
 
 static int
 md_pre__T(struct roff_node *n)
 {
 	if (n->parent->tok == MDOC_Rs && n->parent->norm->Rs.quote_T)
 		md_word("\"");
 	else
 		md_rawword("*");
 	outflags &= ~MD_spc;
 	return 1;
 }
 
 static void
 md_post__T(struct roff_node *n)
 {
 	outflags &= ~MD_spc;
 	if (n->parent->tok == MDOC_Rs && n->parent->norm->Rs.quote_T)
 		md_word("\"");
 	else
 		md_rawword("*");
 	md_post_pc(n);
 }
 
 static int
 md_pre_br(struct roff_node *n)
 {
 	outflags |= MD_br;
 	return 0;
 }
Index: vendor/mdocml/dist/mdoc_term.c
===================================================================
--- vendor/mdocml/dist/mdoc_term.c	(revision 321806)
+++ vendor/mdocml/dist/mdoc_term.c	(revision 321807)
@@ -1,2103 +1,2103 @@
-/*	$Id: mdoc_term.c,v 1.363 2017/06/08 12:54:58 schwarze Exp $ */
+/*	$Id: mdoc_term.c,v 1.364 2017/06/14 17:51:15 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons 
  * Copyright (c) 2010, 2012-2017 Ingo Schwarze 
  * Copyright (c) 2013 Franco Fichtner 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc_aux.h"
 #include "mandoc.h"
 #include "roff.h"
 #include "mdoc.h"
 #include "out.h"
 #include "term.h"
 #include "tag.h"
 #include "main.h"
 
 struct	termpair {
 	struct termpair	 *ppair;
 	int		  count;
 };
 
 #define	DECL_ARGS struct termp *p, \
 		  struct termpair *pair, \
 		  const struct roff_meta *meta, \
 		  struct roff_node *n
 
 struct	termact {
 	int	(*pre)(DECL_ARGS);
 	void	(*post)(DECL_ARGS);
 };
 
 static	int	  a2width(const struct termp *, const char *);
 
 static	void	  print_bvspace(struct termp *,
 			const struct roff_node *,
 			const struct roff_node *);
 static	void	  print_mdoc_node(DECL_ARGS);
 static	void	  print_mdoc_nodelist(DECL_ARGS);
 static	void	  print_mdoc_head(struct termp *, const struct roff_meta *);
 static	void	  print_mdoc_foot(struct termp *, const struct roff_meta *);
 static	void	  synopsis_pre(struct termp *,
 			const struct roff_node *);
 
 static	void	  termp____post(DECL_ARGS);
 static	void	  termp__t_post(DECL_ARGS);
 static	void	  termp_bd_post(DECL_ARGS);
 static	void	  termp_bk_post(DECL_ARGS);
 static	void	  termp_bl_post(DECL_ARGS);
 static	void	  termp_eo_post(DECL_ARGS);
 static	void	  termp_fd_post(DECL_ARGS);
 static	void	  termp_fo_post(DECL_ARGS);
 static	void	  termp_in_post(DECL_ARGS);
 static	void	  termp_it_post(DECL_ARGS);
 static	void	  termp_lb_post(DECL_ARGS);
 static	void	  termp_nm_post(DECL_ARGS);
 static	void	  termp_pf_post(DECL_ARGS);
 static	void	  termp_quote_post(DECL_ARGS);
 static	void	  termp_sh_post(DECL_ARGS);
 static	void	  termp_ss_post(DECL_ARGS);
 static	void	  termp_xx_post(DECL_ARGS);
 
 static	int	  termp__a_pre(DECL_ARGS);
 static	int	  termp__t_pre(DECL_ARGS);
 static	int	  termp_an_pre(DECL_ARGS);
 static	int	  termp_ap_pre(DECL_ARGS);
 static	int	  termp_bd_pre(DECL_ARGS);
 static	int	  termp_bf_pre(DECL_ARGS);
 static	int	  termp_bk_pre(DECL_ARGS);
 static	int	  termp_bl_pre(DECL_ARGS);
 static	int	  termp_bold_pre(DECL_ARGS);
 static	int	  termp_cd_pre(DECL_ARGS);
 static	int	  termp_d1_pre(DECL_ARGS);
 static	int	  termp_eo_pre(DECL_ARGS);
 static	int	  termp_em_pre(DECL_ARGS);
 static	int	  termp_er_pre(DECL_ARGS);
 static	int	  termp_ex_pre(DECL_ARGS);
 static	int	  termp_fa_pre(DECL_ARGS);
 static	int	  termp_fd_pre(DECL_ARGS);
 static	int	  termp_fl_pre(DECL_ARGS);
 static	int	  termp_fn_pre(DECL_ARGS);
 static	int	  termp_fo_pre(DECL_ARGS);
 static	int	  termp_ft_pre(DECL_ARGS);
 static	int	  termp_in_pre(DECL_ARGS);
 static	int	  termp_it_pre(DECL_ARGS);
 static	int	  termp_li_pre(DECL_ARGS);
 static	int	  termp_lk_pre(DECL_ARGS);
 static	int	  termp_nd_pre(DECL_ARGS);
 static	int	  termp_nm_pre(DECL_ARGS);
 static	int	  termp_ns_pre(DECL_ARGS);
 static	int	  termp_quote_pre(DECL_ARGS);
 static	int	  termp_rs_pre(DECL_ARGS);
 static	int	  termp_sh_pre(DECL_ARGS);
 static	int	  termp_skip_pre(DECL_ARGS);
 static	int	  termp_sm_pre(DECL_ARGS);
 static	int	  termp_pp_pre(DECL_ARGS);
 static	int	  termp_ss_pre(DECL_ARGS);
 static	int	  termp_sy_pre(DECL_ARGS);
 static	int	  termp_tag_pre(DECL_ARGS);
 static	int	  termp_under_pre(DECL_ARGS);
 static	int	  termp_vt_pre(DECL_ARGS);
 static	int	  termp_xr_pre(DECL_ARGS);
 static	int	  termp_xx_pre(DECL_ARGS);
 
 static	const struct termact __termacts[MDOC_MAX - MDOC_Dd] = {
 	{ NULL, NULL }, /* Dd */
 	{ NULL, NULL }, /* Dt */
 	{ NULL, NULL }, /* Os */
 	{ termp_sh_pre, termp_sh_post }, /* Sh */
 	{ termp_ss_pre, termp_ss_post }, /* Ss */
 	{ termp_pp_pre, NULL }, /* Pp */
 	{ termp_d1_pre, termp_bl_post }, /* D1 */
 	{ termp_d1_pre, termp_bl_post }, /* Dl */
 	{ termp_bd_pre, termp_bd_post }, /* Bd */
 	{ NULL, NULL }, /* Ed */
 	{ termp_bl_pre, termp_bl_post }, /* Bl */
 	{ NULL, NULL }, /* El */
 	{ termp_it_pre, termp_it_post }, /* It */
 	{ termp_under_pre, NULL }, /* Ad */
 	{ termp_an_pre, NULL }, /* An */
 	{ termp_ap_pre, NULL }, /* Ap */
 	{ termp_under_pre, NULL }, /* Ar */
 	{ termp_cd_pre, NULL }, /* Cd */
 	{ termp_bold_pre, NULL }, /* Cm */
 	{ termp_li_pre, NULL }, /* Dv */
 	{ termp_er_pre, NULL }, /* Er */
 	{ termp_tag_pre, NULL }, /* Ev */
 	{ termp_ex_pre, NULL }, /* Ex */
 	{ termp_fa_pre, NULL }, /* Fa */
 	{ termp_fd_pre, termp_fd_post }, /* Fd */
 	{ termp_fl_pre, NULL }, /* Fl */
 	{ termp_fn_pre, NULL }, /* Fn */
 	{ termp_ft_pre, NULL }, /* Ft */
 	{ termp_bold_pre, NULL }, /* Ic */
 	{ termp_in_pre, termp_in_post }, /* In */
 	{ termp_li_pre, NULL }, /* Li */
 	{ termp_nd_pre, NULL }, /* Nd */
 	{ termp_nm_pre, termp_nm_post }, /* Nm */
 	{ termp_quote_pre, termp_quote_post }, /* Op */
 	{ termp_ft_pre, NULL }, /* Ot */
 	{ termp_under_pre, NULL }, /* Pa */
 	{ termp_ex_pre, NULL }, /* Rv */
 	{ NULL, NULL }, /* St */
 	{ termp_under_pre, NULL }, /* Va */
 	{ termp_vt_pre, NULL }, /* Vt */
 	{ termp_xr_pre, NULL }, /* Xr */
 	{ termp__a_pre, termp____post }, /* %A */
 	{ termp_under_pre, termp____post }, /* %B */
 	{ NULL, termp____post }, /* %D */
 	{ termp_under_pre, termp____post }, /* %I */
 	{ termp_under_pre, termp____post }, /* %J */
 	{ NULL, termp____post }, /* %N */
 	{ NULL, termp____post }, /* %O */
 	{ NULL, termp____post }, /* %P */
 	{ NULL, termp____post }, /* %R */
 	{ termp__t_pre, termp__t_post }, /* %T */
 	{ NULL, termp____post }, /* %V */
 	{ NULL, NULL }, /* Ac */
 	{ termp_quote_pre, termp_quote_post }, /* Ao */
 	{ termp_quote_pre, termp_quote_post }, /* Aq */
 	{ NULL, NULL }, /* At */
 	{ NULL, NULL }, /* Bc */
 	{ termp_bf_pre, NULL }, /* Bf */
 	{ termp_quote_pre, termp_quote_post }, /* Bo */
 	{ termp_quote_pre, termp_quote_post }, /* Bq */
 	{ termp_xx_pre, termp_xx_post }, /* Bsx */
 	{ NULL, NULL }, /* Bx */
 	{ termp_skip_pre, NULL }, /* Db */
 	{ NULL, NULL }, /* Dc */
 	{ termp_quote_pre, termp_quote_post }, /* Do */
 	{ termp_quote_pre, termp_quote_post }, /* Dq */
 	{ NULL, NULL }, /* Ec */ /* FIXME: no space */
 	{ NULL, NULL }, /* Ef */
 	{ termp_em_pre, NULL }, /* Em */
 	{ termp_eo_pre, termp_eo_post }, /* Eo */
 	{ termp_xx_pre, termp_xx_post }, /* Fx */
 	{ termp_bold_pre, NULL }, /* Ms */
 	{ termp_li_pre, NULL }, /* No */
 	{ termp_ns_pre, NULL }, /* Ns */
 	{ termp_xx_pre, termp_xx_post }, /* Nx */
 	{ termp_xx_pre, termp_xx_post }, /* Ox */
 	{ NULL, NULL }, /* Pc */
 	{ NULL, termp_pf_post }, /* Pf */
 	{ termp_quote_pre, termp_quote_post }, /* Po */
 	{ termp_quote_pre, termp_quote_post }, /* Pq */
 	{ NULL, NULL }, /* Qc */
 	{ termp_quote_pre, termp_quote_post }, /* Ql */
 	{ termp_quote_pre, termp_quote_post }, /* Qo */
 	{ termp_quote_pre, termp_quote_post }, /* Qq */
 	{ NULL, NULL }, /* Re */
 	{ termp_rs_pre, NULL }, /* Rs */
 	{ NULL, NULL }, /* Sc */
 	{ termp_quote_pre, termp_quote_post }, /* So */
 	{ termp_quote_pre, termp_quote_post }, /* Sq */
 	{ termp_sm_pre, NULL }, /* Sm */
 	{ termp_under_pre, NULL }, /* Sx */
 	{ termp_sy_pre, NULL }, /* Sy */
 	{ NULL, NULL }, /* Tn */
 	{ termp_xx_pre, termp_xx_post }, /* Ux */
 	{ NULL, NULL }, /* Xc */
 	{ NULL, NULL }, /* Xo */
 	{ termp_fo_pre, termp_fo_post }, /* Fo */
 	{ NULL, NULL }, /* Fc */
 	{ termp_quote_pre, termp_quote_post }, /* Oo */
 	{ NULL, NULL }, /* Oc */
 	{ termp_bk_pre, termp_bk_post }, /* Bk */
 	{ NULL, NULL }, /* Ek */
 	{ NULL, NULL }, /* Bt */
 	{ NULL, NULL }, /* Hf */
 	{ termp_under_pre, NULL }, /* Fr */
 	{ NULL, NULL }, /* Ud */
 	{ NULL, termp_lb_post }, /* Lb */
 	{ termp_pp_pre, NULL }, /* Lp */
 	{ termp_lk_pre, NULL }, /* Lk */
 	{ termp_under_pre, NULL }, /* Mt */
 	{ termp_quote_pre, termp_quote_post }, /* Brq */
 	{ termp_quote_pre, termp_quote_post }, /* Bro */
 	{ NULL, NULL }, /* Brc */
 	{ NULL, termp____post }, /* %C */
 	{ termp_skip_pre, NULL }, /* Es */
 	{ termp_quote_pre, termp_quote_post }, /* En */
 	{ termp_xx_pre, termp_xx_post }, /* Dx */
 	{ NULL, termp____post }, /* %Q */
 	{ NULL, termp____post }, /* %U */
 	{ NULL, NULL }, /* Ta */
 };
 static	const struct termact *const termacts = __termacts - MDOC_Dd;
 
 static	int	 fn_prio;
 
 
 void
 terminal_mdoc(void *arg, const struct roff_man *mdoc)
 {
 	struct roff_node	*n;
 	struct termp		*p;
 	size_t			 save_defindent;
 
 	p = (struct termp *)arg;
 	p->tcol->rmargin = p->maxrmargin = p->defrmargin;
 	term_tab_set(p, NULL);
 	term_tab_set(p, "T");
 	term_tab_set(p, ".5i");
 
 	n = mdoc->first->child;
 	if (p->synopsisonly) {
 		while (n != NULL) {
 			if (n->tok == MDOC_Sh && n->sec == SEC_SYNOPSIS) {
 				if (n->child->next->child != NULL)
 					print_mdoc_nodelist(p, NULL,
 					    &mdoc->meta,
 					    n->child->next->child);
 				term_newln(p);
 				break;
 			}
 			n = n->next;
 		}
 	} else {
 		save_defindent = p->defindent;
 		if (p->defindent == 0)
 			p->defindent = 5;
 		term_begin(p, print_mdoc_head, print_mdoc_foot,
 		    &mdoc->meta);
 		while (n != NULL && n->flags & NODE_NOPRT)
 			n = n->next;
 		if (n != NULL) {
 			if (n->tok != MDOC_Sh)
 				term_vspace(p);
 			print_mdoc_nodelist(p, NULL, &mdoc->meta, n);
 		}
 		term_end(p);
 		p->defindent = save_defindent;
 	}
 }
 
 static void
 print_mdoc_nodelist(DECL_ARGS)
 {
 
 	while (n != NULL) {
 		print_mdoc_node(p, pair, meta, n);
 		n = n->next;
 	}
 }
 
 static void
 print_mdoc_node(DECL_ARGS)
 {
 	int		 chld;
 	struct termpair	 npair;
 	size_t		 offset, rmargin;
 
 	if (n->flags & NODE_NOPRT)
 		return;
 
 	chld = 1;
 	offset = p->tcol->offset;
 	rmargin = p->tcol->rmargin;
 	n->flags &= ~NODE_ENDED;
 	n->prev_font = p->fonti;
 
 	memset(&npair, 0, sizeof(struct termpair));
 	npair.ppair = pair;
 
 	/*
 	 * Keeps only work until the end of a line.  If a keep was
 	 * invoked in a prior line, revert it to PREKEEP.
 	 */
 
 	if (p->flags & TERMP_KEEP && n->flags & NODE_LINE) {
 		p->flags &= ~TERMP_KEEP;
 		p->flags |= TERMP_PREKEEP;
 	}
 
 	/*
 	 * After the keep flags have been set up, we may now
 	 * produce output.  Note that some pre-handlers do so.
 	 */
 
 	switch (n->type) {
 	case ROFFT_TEXT:
 		if (*n->string == ' ' && n->flags & NODE_LINE &&
 		    (p->flags & TERMP_NONEWLINE) == 0)
 			term_newln(p);
 		if (NODE_DELIMC & n->flags)
 			p->flags |= TERMP_NOSPACE;
 		term_word(p, n->string);
 		if (NODE_DELIMO & n->flags)
 			p->flags |= TERMP_NOSPACE;
 		break;
 	case ROFFT_EQN:
 		if ( ! (n->flags & NODE_LINE))
 			p->flags |= TERMP_NOSPACE;
 		term_eqn(p, n->eqn);
 		if (n->next != NULL && ! (n->next->flags & NODE_LINE))
 			p->flags |= TERMP_NOSPACE;
 		break;
 	case ROFFT_TBL:
 		if (p->tbl.cols == NULL)
 			term_newln(p);
 		term_tbl(p, n->span);
 		break;
 	default:
 		if (n->tok < ROFF_MAX) {
 			roff_term_pre(p, n);
 			return;
 		}
 		assert(n->tok >= MDOC_Dd && n->tok < MDOC_MAX);
 		if (termacts[n->tok].pre != NULL &&
 		    (n->end == ENDBODY_NOT || n->child != NULL))
 			chld = (*termacts[n->tok].pre)
 				(p, &npair, meta, n);
 		break;
 	}
 
 	if (chld && n->child)
 		print_mdoc_nodelist(p, &npair, meta, n->child);
 
 	term_fontpopq(p,
 	    (ENDBODY_NOT == n->end ? n : n->body)->prev_font);
 
 	switch (n->type) {
 	case ROFFT_TEXT:
 		break;
 	case ROFFT_TBL:
 		break;
 	case ROFFT_EQN:
 		break;
 	default:
 		if (termacts[n->tok].post == NULL || n->flags & NODE_ENDED)
 			break;
 		(void)(*termacts[n->tok].post)(p, &npair, meta, n);
 
 		/*
 		 * Explicit end tokens not only call the post
 		 * handler, but also tell the respective block
 		 * that it must not call the post handler again.
 		 */
 		if (ENDBODY_NOT != n->end)
 			n->body->flags |= NODE_ENDED;
 		break;
 	}
 
 	if (NODE_EOS & n->flags)
 		p->flags |= TERMP_SENTENCE;
 
 	if (n->type != ROFFT_TEXT)
 		p->tcol->offset = offset;
 	p->tcol->rmargin = rmargin;
 }
 
 static void
 print_mdoc_foot(struct termp *p, const struct roff_meta *meta)
 {
 	size_t sz;
 
 	term_fontrepl(p, TERMFONT_NONE);
 
 	/*
 	 * Output the footer in new-groff style, that is, three columns
 	 * with the middle being the manual date and flanking columns
 	 * being the operating system:
 	 *
 	 * SYSTEM                  DATE                    SYSTEM
 	 */
 
 	term_vspace(p);
 
 	p->tcol->offset = 0;
 	sz = term_strlen(p, meta->date);
 	p->tcol->rmargin = p->maxrmargin > sz ?
 	    (p->maxrmargin + term_len(p, 1) - sz) / 2 : 0;
 	p->trailspace = 1;
 	p->flags |= TERMP_NOSPACE | TERMP_NOBREAK;
 
 	term_word(p, meta->os);
 	term_flushln(p);
 
 	p->tcol->offset = p->tcol->rmargin;
 	sz = term_strlen(p, meta->os);
 	p->tcol->rmargin = p->maxrmargin > sz ? p->maxrmargin - sz : 0;
 	p->flags |= TERMP_NOSPACE;
 
 	term_word(p, meta->date);
 	term_flushln(p);
 
 	p->tcol->offset = p->tcol->rmargin;
 	p->tcol->rmargin = p->maxrmargin;
 	p->trailspace = 0;
 	p->flags &= ~TERMP_NOBREAK;
 	p->flags |= TERMP_NOSPACE;
 
 	term_word(p, meta->os);
 	term_flushln(p);
 
 	p->tcol->offset = 0;
 	p->tcol->rmargin = p->maxrmargin;
 	p->flags = 0;
 }
 
 static void
 print_mdoc_head(struct termp *p, const struct roff_meta *meta)
 {
 	char			*volume, *title;
 	size_t			 vollen, titlen;
 
 	/*
 	 * The header is strange.  It has three components, which are
 	 * really two with the first duplicated.  It goes like this:
 	 *
 	 * IDENTIFIER              TITLE                   IDENTIFIER
 	 *
 	 * The IDENTIFIER is NAME(SECTION), which is the command-name
 	 * (if given, or "unknown" if not) followed by the manual page
 	 * section.  These are given in `Dt'.  The TITLE is a free-form
 	 * string depending on the manual volume.  If not specified, it
 	 * switches on the manual section.
 	 */
 
 	assert(meta->vol);
 	if (NULL == meta->arch)
 		volume = mandoc_strdup(meta->vol);
 	else
 		mandoc_asprintf(&volume, "%s (%s)",
 		    meta->vol, meta->arch);
 	vollen = term_strlen(p, volume);
 
 	if (NULL == meta->msec)
 		title = mandoc_strdup(meta->title);
 	else
 		mandoc_asprintf(&title, "%s(%s)",
 		    meta->title, meta->msec);
 	titlen = term_strlen(p, title);
 
 	p->flags |= TERMP_NOBREAK | TERMP_NOSPACE;
 	p->trailspace = 1;
 	p->tcol->offset = 0;
 	p->tcol->rmargin = 2 * (titlen+1) + vollen < p->maxrmargin ?
 	    (p->maxrmargin - vollen + term_len(p, 1)) / 2 :
 	    vollen < p->maxrmargin ?  p->maxrmargin - vollen : 0;
 
 	term_word(p, title);
 	term_flushln(p);
 
 	p->flags |= TERMP_NOSPACE;
 	p->tcol->offset = p->tcol->rmargin;
 	p->tcol->rmargin = p->tcol->offset + vollen + titlen <
 	    p->maxrmargin ? p->maxrmargin - titlen : p->maxrmargin;
 
 	term_word(p, volume);
 	term_flushln(p);
 
 	p->flags &= ~TERMP_NOBREAK;
 	p->trailspace = 0;
 	if (p->tcol->rmargin + titlen <= p->maxrmargin) {
 		p->flags |= TERMP_NOSPACE;
 		p->tcol->offset = p->tcol->rmargin;
 		p->tcol->rmargin = p->maxrmargin;
 		term_word(p, title);
 		term_flushln(p);
 	}
 
 	p->flags &= ~TERMP_NOSPACE;
 	p->tcol->offset = 0;
 	p->tcol->rmargin = p->maxrmargin;
 	free(title);
 	free(volume);
 }
 
 static int
 a2width(const struct termp *p, const char *v)
 {
 	struct roffsu	 su;
 	const char	*end;
 
 	end = a2roffsu(v, &su, SCALE_MAX);
 	if (end == NULL || *end != '\0') {
 		SCALE_HS_INIT(&su, term_strlen(p, v));
 		su.scale /= term_strlen(p, "0");
 	}
-	return term_hspan(p, &su) / 24;
+	return term_hen(p, &su);
 }
 
 /*
  * Determine how much space to print out before block elements of `It'
  * (and thus `Bl') and `Bd'.  And then go ahead and print that space,
  * too.
  */
 static void
 print_bvspace(struct termp *p,
 	const struct roff_node *bl,
 	const struct roff_node *n)
 {
 	const struct roff_node	*nn;
 
 	assert(n);
 
 	term_newln(p);
 
 	if (MDOC_Bd == bl->tok && bl->norm->Bd.comp)
 		return;
 	if (MDOC_Bl == bl->tok && bl->norm->Bl.comp)
 		return;
 
 	/* Do not vspace directly after Ss/Sh. */
 
 	nn = n;
 	while (nn->prev != NULL && nn->prev->flags & NODE_NOPRT)
 		nn = nn->prev;
 	while (nn->prev == NULL) {
 		do {
 			nn = nn->parent;
 			if (nn->type == ROFFT_ROOT)
 				return;
 		} while (nn->type != ROFFT_BLOCK);
 		if (nn->tok == MDOC_Sh || nn->tok == MDOC_Ss)
 			return;
 		if (nn->tok == MDOC_It &&
 		    nn->parent->parent->norm->Bl.type != LIST_item)
 			break;
 	}
 
 	/* A `-column' does not assert vspace within the list. */
 
 	if (MDOC_Bl == bl->tok && LIST_column == bl->norm->Bl.type)
 		if (n->prev && MDOC_It == n->prev->tok)
 			return;
 
 	/* A `-diag' without body does not vspace. */
 
 	if (MDOC_Bl == bl->tok && LIST_diag == bl->norm->Bl.type)
 		if (n->prev && MDOC_It == n->prev->tok) {
 			assert(n->prev->body);
 			if (NULL == n->prev->body->child)
 				return;
 		}
 
 	term_vspace(p);
 }
 
 
 static int
 termp_it_pre(DECL_ARGS)
 {
 	struct roffsu		su;
 	char			buf[24];
 	const struct roff_node *bl, *nn;
 	size_t			ncols, dcol;
 	int			i, offset, width;
 	enum mdoc_list		type;
 
 	if (n->type == ROFFT_BLOCK) {
 		print_bvspace(p, n->parent->parent, n);
 		return 1;
 	}
 
 	bl = n->parent->parent->parent;
 	type = bl->norm->Bl.type;
 
 	/*
 	 * Defaults for specific list types.
 	 */
 
 	switch (type) {
 	case LIST_bullet:
 	case LIST_dash:
 	case LIST_hyphen:
 	case LIST_enum:
 		width = term_len(p, 2);
 		break;
 	case LIST_hang:
 	case LIST_tag:
 		width = term_len(p, 8);
 		break;
 	case LIST_column:
 		width = term_len(p, 10);
 		break;
 	default:
 		width = 0;
 		break;
 	}
 	offset = 0;
 
 	/*
 	 * First calculate width and offset.  This is pretty easy unless
 	 * we're a -column list, in which case all prior columns must
 	 * be accounted for.
 	 */
 
 	if (bl->norm->Bl.offs != NULL) {
 		offset = a2width(p, bl->norm->Bl.offs);
 		if (offset < 0 && (size_t)(-offset) > p->tcol->offset)
 			offset = -p->tcol->offset;
 		else if (offset > SHRT_MAX)
 			offset = 0;
 	}
 
 	switch (type) {
 	case LIST_column:
 		if (n->type == ROFFT_HEAD)
 			break;
 
 		/*
 		 * Imitate groff's column handling:
 		 * - For each earlier column, add its width.
 		 * - For less than 5 columns, add four more blanks per
 		 *   column.
 		 * - For exactly 5 columns, add three more blank per
 		 *   column.
 		 * - For more than 5 columns, add only one column.
 		 */
 		ncols = bl->norm->Bl.ncols;
 		dcol = ncols < 5 ? term_len(p, 4) :
 		    ncols == 5 ? term_len(p, 3) : term_len(p, 1);
 
 		/*
 		 * Calculate the offset by applying all prior ROFFT_BODY,
 		 * so we stop at the ROFFT_HEAD (nn->prev == NULL).
 		 */
 
 		for (i = 0, nn = n->prev;
 		    nn->prev && i < (int)ncols;
 		    nn = nn->prev, i++) {
 			SCALE_HS_INIT(&su,
 			    term_strlen(p, bl->norm->Bl.cols[i]));
 			su.scale /= term_strlen(p, "0");
-			offset += term_hspan(p, &su) / 24 + dcol;
+			offset += term_hen(p, &su) + dcol;
 		}
 
 		/*
 		 * When exceeding the declared number of columns, leave
 		 * the remaining widths at 0.  This will later be
 		 * adjusted to the default width of 10, or, for the last
 		 * column, stretched to the right margin.
 		 */
 		if (i >= (int)ncols)
 			break;
 
 		/*
 		 * Use the declared column widths, extended as explained
 		 * in the preceding paragraph.
 		 */
 		SCALE_HS_INIT(&su, term_strlen(p, bl->norm->Bl.cols[i]));
 		su.scale /= term_strlen(p, "0");
-		width = term_hspan(p, &su) / 24 + dcol;
+		width = term_hen(p, &su) + dcol;
 		break;
 	default:
 		if (NULL == bl->norm->Bl.width)
 			break;
 
 		/*
 		 * Note: buffer the width by 2, which is groff's magic
 		 * number for buffering single arguments.  See the above
 		 * handling for column for how this changes.
 		 */
 		width = a2width(p, bl->norm->Bl.width) + term_len(p, 2);
 		if (width < 0 && (size_t)(-width) > p->tcol->offset)
 			width = -p->tcol->offset;
 		else if (width > SHRT_MAX)
 			width = 0;
 		break;
 	}
 
 	/*
 	 * Whitespace control.  Inset bodies need an initial space,
 	 * while diagonal bodies need two.
 	 */
 
 	p->flags |= TERMP_NOSPACE;
 
 	switch (type) {
 	case LIST_diag:
 		if (n->type == ROFFT_BODY)
 			term_word(p, "\\ \\ ");
 		break;
 	case LIST_inset:
 		if (n->type == ROFFT_BODY && n->parent->head->child != NULL)
 			term_word(p, "\\ ");
 		break;
 	default:
 		break;
 	}
 
 	p->flags |= TERMP_NOSPACE;
 
 	switch (type) {
 	case LIST_diag:
 		if (n->type == ROFFT_HEAD)
 			term_fontpush(p, TERMFONT_BOLD);
 		break;
 	default:
 		break;
 	}
 
 	/*
 	 * Pad and break control.  This is the tricky part.  These flags
 	 * are documented in term_flushln() in term.c.  Note that we're
 	 * going to unset all of these flags in termp_it_post() when we
 	 * exit.
 	 */
 
 	switch (type) {
 	case LIST_enum:
 	case LIST_bullet:
 	case LIST_dash:
 	case LIST_hyphen:
 		if (n->type == ROFFT_HEAD) {
 			p->flags |= TERMP_NOBREAK | TERMP_HANG;
 			p->trailspace = 1;
 		} else if (width <= (int)term_len(p, 2))
 			p->flags |= TERMP_NOPAD;
 		break;
 	case LIST_hang:
 		if (n->type != ROFFT_HEAD)
 			break;
 		p->flags |= TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG;
 		p->trailspace = 1;
 		break;
 	case LIST_tag:
 		if (n->type != ROFFT_HEAD)
 			break;
 
 		p->flags |= TERMP_NOBREAK | TERMP_BRTRSP | TERMP_BRIND;
 		p->trailspace = 2;
 
 		if (NULL == n->next || NULL == n->next->child)
 			p->flags |= TERMP_HANG;
 		break;
 	case LIST_column:
 		if (n->type == ROFFT_HEAD)
 			break;
 
 		if (NULL == n->next) {
 			p->flags &= ~TERMP_NOBREAK;
 			p->trailspace = 0;
 		} else {
 			p->flags |= TERMP_NOBREAK;
 			p->trailspace = 1;
 		}
 
 		break;
 	case LIST_diag:
 		if (n->type != ROFFT_HEAD)
 			break;
 		p->flags |= TERMP_NOBREAK | TERMP_BRIND;
 		p->trailspace = 1;
 		break;
 	default:
 		break;
 	}
 
 	/*
 	 * Margin control.  Set-head-width lists have their right
 	 * margins shortened.  The body for these lists has the offset
 	 * necessarily lengthened.  Everybody gets the offset.
 	 */
 
 	p->tcol->offset += offset;
 
 	switch (type) {
 	case LIST_bullet:
 	case LIST_dash:
 	case LIST_enum:
 	case LIST_hyphen:
 	case LIST_hang:
 	case LIST_tag:
 		if (n->type == ROFFT_HEAD)
 			p->tcol->rmargin = p->tcol->offset + width;
 		else
 			p->tcol->offset += width;
 		break;
 	case LIST_column:
 		assert(width);
 		p->tcol->rmargin = p->tcol->offset + width;
 		/*
 		 * XXX - this behaviour is not documented: the
 		 * right-most column is filled to the right margin.
 		 */
 		if (n->type == ROFFT_HEAD)
 			break;
 		if (n->next == NULL && p->tcol->rmargin < p->maxrmargin)
 			p->tcol->rmargin = p->maxrmargin;
 		break;
 	default:
 		break;
 	}
 
 	/*
 	 * The dash, hyphen, bullet and enum lists all have a special
 	 * HEAD character (temporarily bold, in some cases).
 	 */
 
 	if (n->type == ROFFT_HEAD)
 		switch (type) {
 		case LIST_bullet:
 			term_fontpush(p, TERMFONT_BOLD);
 			term_word(p, "\\[bu]");
 			term_fontpop(p);
 			break;
 		case LIST_dash:
 		case LIST_hyphen:
 			term_fontpush(p, TERMFONT_BOLD);
 			term_word(p, "-");
 			term_fontpop(p);
 			break;
 		case LIST_enum:
 			(pair->ppair->ppair->count)++;
 			(void)snprintf(buf, sizeof(buf), "%d.",
 			    pair->ppair->ppair->count);
 			term_word(p, buf);
 			break;
 		default:
 			break;
 		}
 
 	/*
 	 * If we're not going to process our children, indicate so here.
 	 */
 
 	switch (type) {
 	case LIST_bullet:
 	case LIST_item:
 	case LIST_dash:
 	case LIST_hyphen:
 	case LIST_enum:
 		if (n->type == ROFFT_HEAD)
 			return 0;
 		break;
 	case LIST_column:
 		if (n->type == ROFFT_HEAD)
 			return 0;
 		p->minbl = 0;
 		break;
 	default:
 		break;
 	}
 
 	return 1;
 }
 
 static void
 termp_it_post(DECL_ARGS)
 {
 	enum mdoc_list	   type;
 
 	if (n->type == ROFFT_BLOCK)
 		return;
 
 	type = n->parent->parent->parent->norm->Bl.type;
 
 	switch (type) {
 	case LIST_item:
 	case LIST_diag:
 	case LIST_inset:
 		if (n->type == ROFFT_BODY)
 			term_newln(p);
 		break;
 	case LIST_column:
 		if (n->type == ROFFT_BODY)
 			term_flushln(p);
 		break;
 	default:
 		term_newln(p);
 		break;
 	}
 
 	/*
 	 * Now that our output is flushed, we can reset our tags.  Since
 	 * only `It' sets these flags, we're free to assume that nobody
 	 * has munged them in the meanwhile.
 	 */
 
 	p->flags &= ~(TERMP_NOBREAK | TERMP_BRTRSP | TERMP_BRIND | TERMP_HANG);
 	p->trailspace = 0;
 }
 
 static int
 termp_nm_pre(DECL_ARGS)
 {
 	const char	*cp;
 
 	if (n->type == ROFFT_BLOCK) {
 		p->flags |= TERMP_PREKEEP;
 		return 1;
 	}
 
 	if (n->type == ROFFT_BODY) {
 		if (n->child == NULL)
 			return 0;
 		p->flags |= TERMP_NOSPACE;
 		cp = NULL;
 		if (n->prev->child != NULL)
 		    cp = n->prev->child->string;
 		if (cp == NULL)
 			cp = meta->name;
 		if (cp == NULL)
 			p->tcol->offset += term_len(p, 6);
 		else
 			p->tcol->offset += term_len(p, 1) +
 			    term_strlen(p, cp);
 		return 1;
 	}
 
 	if (n->child == NULL)
 		return 0;
 
 	if (n->type == ROFFT_HEAD)
 		synopsis_pre(p, n->parent);
 
 	if (n->type == ROFFT_HEAD &&
 	    n->next != NULL && n->next->child != NULL) {
 		p->flags |= TERMP_NOSPACE | TERMP_NOBREAK | TERMP_BRIND;
 		p->trailspace = 1;
 		p->tcol->rmargin = p->tcol->offset + term_len(p, 1);
 		if (n->child == NULL)
 			p->tcol->rmargin += term_strlen(p, meta->name);
 		else if (n->child->type == ROFFT_TEXT) {
 			p->tcol->rmargin += term_strlen(p, n->child->string);
 			if (n->child->next != NULL)
 				p->flags |= TERMP_HANG;
 		} else {
 			p->tcol->rmargin += term_len(p, 5);
 			p->flags |= TERMP_HANG;
 		}
 	}
 
 	term_fontpush(p, TERMFONT_BOLD);
 	return 1;
 }
 
 static void
 termp_nm_post(DECL_ARGS)
 {
 
 	if (n->type == ROFFT_BLOCK) {
 		p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
 	} else if (n->type == ROFFT_HEAD &&
 	    NULL != n->next && NULL != n->next->child) {
 		term_flushln(p);
 		p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG);
 		p->trailspace = 0;
 	} else if (n->type == ROFFT_BODY && n->child != NULL)
 		term_flushln(p);
 }
 
 static int
 termp_fl_pre(DECL_ARGS)
 {
 
 	termp_tag_pre(p, pair, meta, n);
 	term_fontpush(p, TERMFONT_BOLD);
 	term_word(p, "\\-");
 
 	if (!(n->child == NULL &&
 	    (n->next == NULL ||
 	     n->next->type == ROFFT_TEXT ||
 	     n->next->flags & NODE_LINE)))
 		p->flags |= TERMP_NOSPACE;
 
 	return 1;
 }
 
 static int
 termp__a_pre(DECL_ARGS)
 {
 
 	if (n->prev && MDOC__A == n->prev->tok)
 		if (NULL == n->next || MDOC__A != n->next->tok)
 			term_word(p, "and");
 
 	return 1;
 }
 
 static int
 termp_an_pre(DECL_ARGS)
 {
 
 	if (n->norm->An.auth == AUTH_split) {
 		p->flags &= ~TERMP_NOSPLIT;
 		p->flags |= TERMP_SPLIT;
 		return 0;
 	}
 	if (n->norm->An.auth == AUTH_nosplit) {
 		p->flags &= ~TERMP_SPLIT;
 		p->flags |= TERMP_NOSPLIT;
 		return 0;
 	}
 
 	if (p->flags & TERMP_SPLIT)
 		term_newln(p);
 
 	if (n->sec == SEC_AUTHORS && ! (p->flags & TERMP_NOSPLIT))
 		p->flags |= TERMP_SPLIT;
 
 	return 1;
 }
 
 static int
 termp_ns_pre(DECL_ARGS)
 {
 
 	if ( ! (NODE_LINE & n->flags))
 		p->flags |= TERMP_NOSPACE;
 	return 1;
 }
 
 static int
 termp_rs_pre(DECL_ARGS)
 {
 
 	if (SEC_SEE_ALSO != n->sec)
 		return 1;
 	if (n->type == ROFFT_BLOCK && n->prev != NULL)
 		term_vspace(p);
 	return 1;
 }
 
 static int
 termp_ex_pre(DECL_ARGS)
 {
 	term_newln(p);
 	return 1;
 }
 
 static int
 termp_nd_pre(DECL_ARGS)
 {
 
 	if (n->type == ROFFT_BODY)
 		term_word(p, "\\(en");
 	return 1;
 }
 
 static int
 termp_bl_pre(DECL_ARGS)
 {
 
 	return n->type != ROFFT_HEAD;
 }
 
 static void
 termp_bl_post(DECL_ARGS)
 {
 
 	if (n->type != ROFFT_BLOCK)
 		return;
 	term_newln(p);
 	if (n->tok != MDOC_Bl || n->norm->Bl.type != LIST_column)
 		return;
 	term_tab_set(p, NULL);
 	term_tab_set(p, "T");
 	term_tab_set(p, ".5i");
 }
 
 static int
 termp_xr_pre(DECL_ARGS)
 {
 
 	if (NULL == (n = n->child))
 		return 0;
 
 	assert(n->type == ROFFT_TEXT);
 	term_word(p, n->string);
 
 	if (NULL == (n = n->next))
 		return 0;
 
 	p->flags |= TERMP_NOSPACE;
 	term_word(p, "(");
 	p->flags |= TERMP_NOSPACE;
 
 	assert(n->type == ROFFT_TEXT);
 	term_word(p, n->string);
 
 	p->flags |= TERMP_NOSPACE;
 	term_word(p, ")");
 
 	return 0;
 }
 
 /*
  * This decides how to assert whitespace before any of the SYNOPSIS set
  * of macros (which, as in the case of Ft/Fo and Ft/Fn, may contain
  * macro combos).
  */
 static void
 synopsis_pre(struct termp *p, const struct roff_node *n)
 {
 	/*
 	 * Obviously, if we're not in a SYNOPSIS or no prior macros
 	 * exist, do nothing.
 	 */
 	if (NULL == n->prev || ! (NODE_SYNPRETTY & n->flags))
 		return;
 
 	/*
 	 * If we're the second in a pair of like elements, emit our
 	 * newline and return.  UNLESS we're `Fo', `Fn', `Fn', in which
 	 * case we soldier on.
 	 */
 	if (n->prev->tok == n->tok &&
 	    MDOC_Ft != n->tok &&
 	    MDOC_Fo != n->tok &&
 	    MDOC_Fn != n->tok) {
 		term_newln(p);
 		return;
 	}
 
 	/*
 	 * If we're one of the SYNOPSIS set and non-like pair-wise after
 	 * another (or Fn/Fo, which we've let slip through) then assert
 	 * vertical space, else only newline and move on.
 	 */
 	switch (n->prev->tok) {
 	case MDOC_Fd:
 	case MDOC_Fn:
 	case MDOC_Fo:
 	case MDOC_In:
 	case MDOC_Vt:
 		term_vspace(p);
 		break;
 	case MDOC_Ft:
 		if (MDOC_Fn != n->tok && MDOC_Fo != n->tok) {
 			term_vspace(p);
 			break;
 		}
 		/* FALLTHROUGH */
 	default:
 		term_newln(p);
 		break;
 	}
 }
 
 static int
 termp_vt_pre(DECL_ARGS)
 {
 
 	if (n->type == ROFFT_ELEM) {
 		synopsis_pre(p, n);
 		return termp_under_pre(p, pair, meta, n);
 	} else if (n->type == ROFFT_BLOCK) {
 		synopsis_pre(p, n);
 		return 1;
 	} else if (n->type == ROFFT_HEAD)
 		return 0;
 
 	return termp_under_pre(p, pair, meta, n);
 }
 
 static int
 termp_bold_pre(DECL_ARGS)
 {
 
 	termp_tag_pre(p, pair, meta, n);
 	term_fontpush(p, TERMFONT_BOLD);
 	return 1;
 }
 
 static int
 termp_fd_pre(DECL_ARGS)
 {
 
 	synopsis_pre(p, n);
 	return termp_bold_pre(p, pair, meta, n);
 }
 
 static void
 termp_fd_post(DECL_ARGS)
 {
 
 	term_newln(p);
 }
 
 static int
 termp_sh_pre(DECL_ARGS)
 {
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		/*
 		 * Vertical space before sections, except
 		 * when the previous section was empty.
 		 */
 		if (n->prev == NULL ||
 		    n->prev->tok != MDOC_Sh ||
 		    (n->prev->body != NULL &&
 		     n->prev->body->child != NULL))
 			term_vspace(p);
 		break;
 	case ROFFT_HEAD:
 		term_fontpush(p, TERMFONT_BOLD);
 		break;
 	case ROFFT_BODY:
 		p->tcol->offset = term_len(p, p->defindent);
 		term_tab_set(p, NULL);
 		term_tab_set(p, "T");
 		term_tab_set(p, ".5i");
 		switch (n->sec) {
 		case SEC_DESCRIPTION:
 			fn_prio = 0;
 			break;
 		case SEC_AUTHORS:
 			p->flags &= ~(TERMP_SPLIT|TERMP_NOSPLIT);
 			break;
 		default:
 			break;
 		}
 		break;
 	default:
 		break;
 	}
 	return 1;
 }
 
 static void
 termp_sh_post(DECL_ARGS)
 {
 
 	switch (n->type) {
 	case ROFFT_HEAD:
 		term_newln(p);
 		break;
 	case ROFFT_BODY:
 		term_newln(p);
 		p->tcol->offset = 0;
 		break;
 	default:
 		break;
 	}
 }
 
 static void
 termp_lb_post(DECL_ARGS)
 {
 
 	if (SEC_LIBRARY == n->sec && NODE_LINE & n->flags)
 		term_newln(p);
 }
 
 static int
 termp_d1_pre(DECL_ARGS)
 {
 
 	if (n->type != ROFFT_BLOCK)
 		return 1;
 	term_newln(p);
 	p->tcol->offset += term_len(p, p->defindent + 1);
 	term_tab_set(p, NULL);
 	term_tab_set(p, "T");
 	term_tab_set(p, ".5i");
 	return 1;
 }
 
 static int
 termp_ft_pre(DECL_ARGS)
 {
 
 	/* NB: NODE_LINE does not effect this! */
 	synopsis_pre(p, n);
 	term_fontpush(p, TERMFONT_UNDER);
 	return 1;
 }
 
 static int
 termp_fn_pre(DECL_ARGS)
 {
 	size_t		 rmargin = 0;
 	int		 pretty;
 
 	pretty = NODE_SYNPRETTY & n->flags;
 
 	synopsis_pre(p, n);
 
 	if (NULL == (n = n->child))
 		return 0;
 
 	if (pretty) {
 		rmargin = p->tcol->rmargin;
 		p->tcol->rmargin = p->tcol->offset + term_len(p, 4);
 		p->flags |= TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG;
 	}
 
 	assert(n->type == ROFFT_TEXT);
 	term_fontpush(p, TERMFONT_BOLD);
 	term_word(p, n->string);
 	term_fontpop(p);
 
 	if (n->sec == SEC_DESCRIPTION || n->sec == SEC_CUSTOM)
 		tag_put(n->string, ++fn_prio, p->line);
 
 	if (pretty) {
 		term_flushln(p);
 		p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND | TERMP_HANG);
 		p->flags |= TERMP_NOPAD;
 		p->tcol->offset = p->tcol->rmargin;
 		p->tcol->rmargin = rmargin;
 	}
 
 	p->flags |= TERMP_NOSPACE;
 	term_word(p, "(");
 	p->flags |= TERMP_NOSPACE;
 
 	for (n = n->next; n; n = n->next) {
 		assert(n->type == ROFFT_TEXT);
 		term_fontpush(p, TERMFONT_UNDER);
 		if (pretty)
 			p->flags |= TERMP_NBRWORD;
 		term_word(p, n->string);
 		term_fontpop(p);
 
 		if (n->next) {
 			p->flags |= TERMP_NOSPACE;
 			term_word(p, ",");
 		}
 	}
 
 	p->flags |= TERMP_NOSPACE;
 	term_word(p, ")");
 
 	if (pretty) {
 		p->flags |= TERMP_NOSPACE;
 		term_word(p, ";");
 		term_flushln(p);
 	}
 
 	return 0;
 }
 
 static int
 termp_fa_pre(DECL_ARGS)
 {
 	const struct roff_node	*nn;
 
 	if (n->parent->tok != MDOC_Fo) {
 		term_fontpush(p, TERMFONT_UNDER);
 		return 1;
 	}
 
 	for (nn = n->child; nn; nn = nn->next) {
 		term_fontpush(p, TERMFONT_UNDER);
 		p->flags |= TERMP_NBRWORD;
 		term_word(p, nn->string);
 		term_fontpop(p);
 
 		if (nn->next || (n->next && n->next->tok == MDOC_Fa)) {
 			p->flags |= TERMP_NOSPACE;
 			term_word(p, ",");
 		}
 	}
 
 	return 0;
 }
 
 static int
 termp_bd_pre(DECL_ARGS)
 {
 	size_t			 lm, len;
 	struct roff_node	*nn;
 	int			 offset;
 
 	if (n->type == ROFFT_BLOCK) {
 		print_bvspace(p, n, n);
 		return 1;
 	} else if (n->type == ROFFT_HEAD)
 		return 0;
 
 	/* Handle the -offset argument. */
 
 	if (n->norm->Bd.offs == NULL ||
 	    ! strcmp(n->norm->Bd.offs, "left"))
 		/* nothing */;
 	else if ( ! strcmp(n->norm->Bd.offs, "indent"))
 		p->tcol->offset += term_len(p, p->defindent + 1);
 	else if ( ! strcmp(n->norm->Bd.offs, "indent-two"))
 		p->tcol->offset += term_len(p, (p->defindent + 1) * 2);
 	else {
 		offset = a2width(p, n->norm->Bd.offs);
 		if (offset < 0 && (size_t)(-offset) > p->tcol->offset)
 			p->tcol->offset = 0;
 		else if (offset < SHRT_MAX)
 			p->tcol->offset += offset;
 	}
 
 	/*
 	 * If -ragged or -filled are specified, the block does nothing
 	 * but change the indentation.  If -unfilled or -literal are
 	 * specified, text is printed exactly as entered in the display:
 	 * for macro lines, a newline is appended to the line.  Blank
 	 * lines are allowed.
 	 */
 
 	if (n->norm->Bd.type != DISP_literal &&
 	    n->norm->Bd.type != DISP_unfilled &&
 	    n->norm->Bd.type != DISP_centered)
 		return 1;
 
 	if (n->norm->Bd.type == DISP_literal) {
 		term_tab_set(p, NULL);
 		term_tab_set(p, "T");
 		term_tab_set(p, "8n");
 	}
 
 	lm = p->tcol->offset;
 	p->flags |= TERMP_BRNEVER;
 	for (nn = n->child; nn != NULL; nn = nn->next) {
 		if (n->norm->Bd.type == DISP_centered) {
 			if (nn->type == ROFFT_TEXT) {
 				len = term_strlen(p, nn->string);
 				p->tcol->offset = len >= p->tcol->rmargin ?
 				    0 : lm + len >= p->tcol->rmargin ?
 				    p->tcol->rmargin - len :
 				    (lm + p->tcol->rmargin - len) / 2;
 			} else
 				p->tcol->offset = lm;
 		}
 		print_mdoc_node(p, pair, meta, nn);
 		/*
 		 * If the printed node flushes its own line, then we
 		 * needn't do it here as well.  This is hacky, but the
 		 * notion of selective eoln whitespace is pretty dumb
 		 * anyway, so don't sweat it.
 		 */
 		if (nn->tok < ROFF_MAX)
 			continue;
 		switch (nn->tok) {
 		case MDOC_Sm:
 		case MDOC_Bl:
 		case MDOC_D1:
 		case MDOC_Dl:
 		case MDOC_Lp:
 		case MDOC_Pp:
 			continue;
 		default:
 			break;
 		}
 		if (p->flags & TERMP_NONEWLINE ||
 		    (nn->next && ! (nn->next->flags & NODE_LINE)))
 			continue;
 		term_flushln(p);
 		p->flags |= TERMP_NOSPACE;
 	}
 	p->flags &= ~TERMP_BRNEVER;
 	return 0;
 }
 
 static void
 termp_bd_post(DECL_ARGS)
 {
 	if (n->type != ROFFT_BODY)
 		return;
 	if (DISP_literal == n->norm->Bd.type ||
 	    DISP_unfilled == n->norm->Bd.type)
 		p->flags |= TERMP_BRNEVER;
 	p->flags |= TERMP_NOSPACE;
 	term_newln(p);
 	p->flags &= ~TERMP_BRNEVER;
 }
 
 static int
 termp_xx_pre(DECL_ARGS)
 {
 	if ((n->aux = p->flags & TERMP_PREKEEP) == 0)
 		p->flags |= TERMP_PREKEEP;
 	return 1;
 }
 
 static void
 termp_xx_post(DECL_ARGS)
 {
 	if (n->aux == 0)
 		p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
 }
 
 static void
 termp_pf_post(DECL_ARGS)
 {
 
 	if ( ! (n->next == NULL || n->next->flags & NODE_LINE))
 		p->flags |= TERMP_NOSPACE;
 }
 
 static int
 termp_ss_pre(DECL_ARGS)
 {
 	struct roff_node *nn;
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		term_newln(p);
 		for (nn = n->prev; nn != NULL; nn = nn->prev)
 			if ((nn->flags & NODE_NOPRT) == 0)
 				break;
 		if (nn != NULL)
 			term_vspace(p);
 		break;
 	case ROFFT_HEAD:
 		term_fontpush(p, TERMFONT_BOLD);
 		p->tcol->offset = term_len(p, (p->defindent+1)/2);
 		break;
 	case ROFFT_BODY:
 		p->tcol->offset = term_len(p, p->defindent);
 		term_tab_set(p, NULL);
 		term_tab_set(p, "T");
 		term_tab_set(p, ".5i");
 		break;
 	default:
 		break;
 	}
 
 	return 1;
 }
 
 static void
 termp_ss_post(DECL_ARGS)
 {
 
 	if (n->type == ROFFT_HEAD || n->type == ROFFT_BODY)
 		term_newln(p);
 }
 
 static int
 termp_cd_pre(DECL_ARGS)
 {
 
 	synopsis_pre(p, n);
 	term_fontpush(p, TERMFONT_BOLD);
 	return 1;
 }
 
 static int
 termp_in_pre(DECL_ARGS)
 {
 
 	synopsis_pre(p, n);
 
 	if (NODE_SYNPRETTY & n->flags && NODE_LINE & n->flags) {
 		term_fontpush(p, TERMFONT_BOLD);
 		term_word(p, "#include");
 		term_word(p, "<");
 	} else {
 		term_word(p, "<");
 		term_fontpush(p, TERMFONT_UNDER);
 	}
 
 	p->flags |= TERMP_NOSPACE;
 	return 1;
 }
 
 static void
 termp_in_post(DECL_ARGS)
 {
 
 	if (NODE_SYNPRETTY & n->flags)
 		term_fontpush(p, TERMFONT_BOLD);
 
 	p->flags |= TERMP_NOSPACE;
 	term_word(p, ">");
 
 	if (NODE_SYNPRETTY & n->flags)
 		term_fontpop(p);
 }
 
 static int
 termp_pp_pre(DECL_ARGS)
 {
 	fn_prio = 0;
 	term_vspace(p);
 	return 0;
 }
 
 static int
 termp_skip_pre(DECL_ARGS)
 {
 
 	return 0;
 }
 
 static int
 termp_quote_pre(DECL_ARGS)
 {
 
 	if (n->type != ROFFT_BODY && n->type != ROFFT_ELEM)
 		return 1;
 
 	switch (n->tok) {
 	case MDOC_Ao:
 	case MDOC_Aq:
 		term_word(p, n->child != NULL && n->child->next == NULL &&
 		    n->child->tok == MDOC_Mt ? "<" : "\\(la");
 		break;
 	case MDOC_Bro:
 	case MDOC_Brq:
 		term_word(p, "{");
 		break;
 	case MDOC_Oo:
 	case MDOC_Op:
 	case MDOC_Bo:
 	case MDOC_Bq:
 		term_word(p, "[");
 		break;
 	case MDOC__T:
 		/* FALLTHROUGH */
 	case MDOC_Do:
 	case MDOC_Dq:
 		term_word(p, "\\(Lq");
 		break;
 	case MDOC_En:
 		if (NULL == n->norm->Es ||
 		    NULL == n->norm->Es->child)
 			return 1;
 		term_word(p, n->norm->Es->child->string);
 		break;
 	case MDOC_Po:
 	case MDOC_Pq:
 		term_word(p, "(");
 		break;
 	case MDOC_Qo:
 	case MDOC_Qq:
 		term_word(p, "\"");
 		break;
 	case MDOC_Ql:
 	case MDOC_So:
 	case MDOC_Sq:
 		term_word(p, "\\(oq");
 		break;
 	default:
 		abort();
 	}
 
 	p->flags |= TERMP_NOSPACE;
 	return 1;
 }
 
 static void
 termp_quote_post(DECL_ARGS)
 {
 
 	if (n->type != ROFFT_BODY && n->type != ROFFT_ELEM)
 		return;
 
 	p->flags |= TERMP_NOSPACE;
 
 	switch (n->tok) {
 	case MDOC_Ao:
 	case MDOC_Aq:
 		term_word(p, n->child != NULL && n->child->next == NULL &&
 		    n->child->tok == MDOC_Mt ? ">" : "\\(ra");
 		break;
 	case MDOC_Bro:
 	case MDOC_Brq:
 		term_word(p, "}");
 		break;
 	case MDOC_Oo:
 	case MDOC_Op:
 	case MDOC_Bo:
 	case MDOC_Bq:
 		term_word(p, "]");
 		break;
 	case MDOC__T:
 		/* FALLTHROUGH */
 	case MDOC_Do:
 	case MDOC_Dq:
 		term_word(p, "\\(Rq");
 		break;
 	case MDOC_En:
 		if (n->norm->Es == NULL ||
 		    n->norm->Es->child == NULL ||
 		    n->norm->Es->child->next == NULL)
 			p->flags &= ~TERMP_NOSPACE;
 		else
 			term_word(p, n->norm->Es->child->next->string);
 		break;
 	case MDOC_Po:
 	case MDOC_Pq:
 		term_word(p, ")");
 		break;
 	case MDOC_Qo:
 	case MDOC_Qq:
 		term_word(p, "\"");
 		break;
 	case MDOC_Ql:
 	case MDOC_So:
 	case MDOC_Sq:
 		term_word(p, "\\(cq");
 		break;
 	default:
 		abort();
 	}
 }
 
 static int
 termp_eo_pre(DECL_ARGS)
 {
 
 	if (n->type != ROFFT_BODY)
 		return 1;
 
 	if (n->end == ENDBODY_NOT &&
 	    n->parent->head->child == NULL &&
 	    n->child != NULL &&
 	    n->child->end != ENDBODY_NOT)
 		term_word(p, "\\&");
 	else if (n->end != ENDBODY_NOT ? n->child != NULL :
 	     n->parent->head->child != NULL && (n->child != NULL ||
 	     (n->parent->tail != NULL && n->parent->tail->child != NULL)))
 		p->flags |= TERMP_NOSPACE;
 
 	return 1;
 }
 
 static void
 termp_eo_post(DECL_ARGS)
 {
 	int	 body, tail;
 
 	if (n->type != ROFFT_BODY)
 		return;
 
 	if (n->end != ENDBODY_NOT) {
 		p->flags &= ~TERMP_NOSPACE;
 		return;
 	}
 
 	body = n->child != NULL || n->parent->head->child != NULL;
 	tail = n->parent->tail != NULL && n->parent->tail->child != NULL;
 
 	if (body && tail)
 		p->flags |= TERMP_NOSPACE;
 	else if ( ! (body || tail))
 		term_word(p, "\\&");
 	else if ( ! tail)
 		p->flags &= ~TERMP_NOSPACE;
 }
 
 static int
 termp_fo_pre(DECL_ARGS)
 {
 	size_t		 rmargin = 0;
 	int		 pretty;
 
 	pretty = NODE_SYNPRETTY & n->flags;
 
 	if (n->type == ROFFT_BLOCK) {
 		synopsis_pre(p, n);
 		return 1;
 	} else if (n->type == ROFFT_BODY) {
 		if (pretty) {
 			rmargin = p->tcol->rmargin;
 			p->tcol->rmargin = p->tcol->offset + term_len(p, 4);
 			p->flags |= TERMP_NOBREAK | TERMP_BRIND |
 					TERMP_HANG;
 		}
 		p->flags |= TERMP_NOSPACE;
 		term_word(p, "(");
 		p->flags |= TERMP_NOSPACE;
 		if (pretty) {
 			term_flushln(p);
 			p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND |
 					TERMP_HANG);
 			p->flags |= TERMP_NOPAD;
 			p->tcol->offset = p->tcol->rmargin;
 			p->tcol->rmargin = rmargin;
 		}
 		return 1;
 	}
 
 	if (NULL == n->child)
 		return 0;
 
 	/* XXX: we drop non-initial arguments as per groff. */
 
 	assert(n->child->string);
 	term_fontpush(p, TERMFONT_BOLD);
 	term_word(p, n->child->string);
 	return 0;
 }
 
 static void
 termp_fo_post(DECL_ARGS)
 {
 
 	if (n->type != ROFFT_BODY)
 		return;
 
 	p->flags |= TERMP_NOSPACE;
 	term_word(p, ")");
 
 	if (NODE_SYNPRETTY & n->flags) {
 		p->flags |= TERMP_NOSPACE;
 		term_word(p, ";");
 		term_flushln(p);
 	}
 }
 
 static int
 termp_bf_pre(DECL_ARGS)
 {
 
 	if (n->type == ROFFT_HEAD)
 		return 0;
 	else if (n->type != ROFFT_BODY)
 		return 1;
 
 	if (FONT_Em == n->norm->Bf.font)
 		term_fontpush(p, TERMFONT_UNDER);
 	else if (FONT_Sy == n->norm->Bf.font)
 		term_fontpush(p, TERMFONT_BOLD);
 	else
 		term_fontpush(p, TERMFONT_NONE);
 
 	return 1;
 }
 
 static int
 termp_sm_pre(DECL_ARGS)
 {
 
 	if (NULL == n->child)
 		p->flags ^= TERMP_NONOSPACE;
 	else if (0 == strcmp("on", n->child->string))
 		p->flags &= ~TERMP_NONOSPACE;
 	else
 		p->flags |= TERMP_NONOSPACE;
 
 	if (p->col && ! (TERMP_NONOSPACE & p->flags))
 		p->flags &= ~TERMP_NOSPACE;
 
 	return 0;
 }
 
 static int
 termp_ap_pre(DECL_ARGS)
 {
 
 	p->flags |= TERMP_NOSPACE;
 	term_word(p, "'");
 	p->flags |= TERMP_NOSPACE;
 	return 1;
 }
 
 static void
 termp____post(DECL_ARGS)
 {
 
 	/*
 	 * Handle lists of authors.  In general, print each followed by
 	 * a comma.  Don't print the comma if there are only two
 	 * authors.
 	 */
 	if (MDOC__A == n->tok && n->next && MDOC__A == n->next->tok)
 		if (NULL == n->next->next || MDOC__A != n->next->next->tok)
 			if (NULL == n->prev || MDOC__A != n->prev->tok)
 				return;
 
 	/* TODO: %U. */
 
 	if (NULL == n->parent || MDOC_Rs != n->parent->tok)
 		return;
 
 	p->flags |= TERMP_NOSPACE;
 	if (NULL == n->next) {
 		term_word(p, ".");
 		p->flags |= TERMP_SENTENCE;
 	} else
 		term_word(p, ",");
 }
 
 static int
 termp_li_pre(DECL_ARGS)
 {
 
 	termp_tag_pre(p, pair, meta, n);
 	term_fontpush(p, TERMFONT_NONE);
 	return 1;
 }
 
 static int
 termp_lk_pre(DECL_ARGS)
 {
 	const struct roff_node *link, *descr, *punct;
 	int display;
 
 	if ((link = n->child) == NULL)
 		return 0;
 
 	/* Find beginning of trailing punctuation. */
 	punct = n->last;
 	while (punct != link && punct->flags & NODE_DELIMC)
 		punct = punct->prev;
 	punct = punct->next;
 
 	/* Link text. */
 	if ((descr = link->next) != NULL && descr != punct) {
 		term_fontpush(p, TERMFONT_UNDER);
 		while (descr != punct) {
 			if (descr->flags & (NODE_DELIMC | NODE_DELIMO))
 				p->flags |= TERMP_NOSPACE;
 			term_word(p, descr->string);
 			descr = descr->next;
 		}
 		term_fontpop(p);
 		p->flags |= TERMP_NOSPACE;
 		term_word(p, ":");
 	}
 
 	/* Link target. */
 	display = term_strlen(p, link->string) >= 26;
 	if (display) {
 		term_newln(p);
 		p->tcol->offset += term_len(p, p->defindent + 1);
 	}
 	term_fontpush(p, TERMFONT_BOLD);
 	term_word(p, link->string);
 	term_fontpop(p);
 
 	/* Trailing punctuation. */
 	while (punct != NULL) {
 		p->flags |= TERMP_NOSPACE;
 		term_word(p, punct->string);
 		punct = punct->next;
 	}
 	if (display)
 		term_newln(p);
 	return 0;
 }
 
 static int
 termp_bk_pre(DECL_ARGS)
 {
 
 	switch (n->type) {
 	case ROFFT_BLOCK:
 		break;
 	case ROFFT_HEAD:
 		return 0;
 	case ROFFT_BODY:
 		if (n->parent->args != NULL || n->prev->child == NULL)
 			p->flags |= TERMP_PREKEEP;
 		break;
 	default:
 		abort();
 	}
 
 	return 1;
 }
 
 static void
 termp_bk_post(DECL_ARGS)
 {
 
 	if (n->type == ROFFT_BODY)
 		p->flags &= ~(TERMP_KEEP | TERMP_PREKEEP);
 }
 
 static void
 termp__t_post(DECL_ARGS)
 {
 
 	/*
 	 * If we're in an `Rs' and there's a journal present, then quote
 	 * us instead of underlining us (for disambiguation).
 	 */
 	if (n->parent && MDOC_Rs == n->parent->tok &&
 	    n->parent->norm->Rs.quote_T)
 		termp_quote_post(p, pair, meta, n);
 
 	termp____post(p, pair, meta, n);
 }
 
 static int
 termp__t_pre(DECL_ARGS)
 {
 
 	/*
 	 * If we're in an `Rs' and there's a journal present, then quote
 	 * us instead of underlining us (for disambiguation).
 	 */
 	if (n->parent && MDOC_Rs == n->parent->tok &&
 	    n->parent->norm->Rs.quote_T)
 		return termp_quote_pre(p, pair, meta, n);
 
 	term_fontpush(p, TERMFONT_UNDER);
 	return 1;
 }
 
 static int
 termp_under_pre(DECL_ARGS)
 {
 
 	term_fontpush(p, TERMFONT_UNDER);
 	return 1;
 }
 
 static int
 termp_em_pre(DECL_ARGS)
 {
 	if (n->child != NULL &&
 	    n->child->type == ROFFT_TEXT)
 		tag_put(n->child->string, 0, p->line);
 	term_fontpush(p, TERMFONT_UNDER);
 	return 1;
 }
 
 static int
 termp_sy_pre(DECL_ARGS)
 {
 	if (n->child != NULL &&
 	    n->child->type == ROFFT_TEXT)
 		tag_put(n->child->string, 0, p->line);
 	term_fontpush(p, TERMFONT_BOLD);
 	return 1;
 }
 
 static int
 termp_er_pre(DECL_ARGS)
 {
 
 	if (n->sec == SEC_ERRORS &&
 	    (n->parent->tok == MDOC_It ||
 	     (n->parent->tok == MDOC_Bq &&
 	      n->parent->parent->parent->tok == MDOC_It)))
 		tag_put(n->child->string, 1, p->line);
 	return 1;
 }
 
 static int
 termp_tag_pre(DECL_ARGS)
 {
 
 	if (n->child != NULL &&
 	    n->child->type == ROFFT_TEXT &&
 	    (n->prev == NULL ||
 	     (n->prev->type == ROFFT_TEXT &&
 	      strcmp(n->prev->string, "|") == 0)) &&
 	    (n->parent->tok == MDOC_It ||
 	     (n->parent->tok == MDOC_Xo &&
 	      n->parent->parent->prev == NULL &&
 	      n->parent->parent->parent->tok == MDOC_It)))
 		tag_put(n->child->string, 1, p->line);
 	return 1;
 }
Index: vendor/mdocml/dist/mdoc_validate.c
===================================================================
--- vendor/mdocml/dist/mdoc_validate.c	(revision 321806)
+++ vendor/mdocml/dist/mdoc_validate.c	(revision 321807)
@@ -1,2551 +1,2909 @@
-/*	$Id: mdoc_validate.c,v 1.332 2017/06/08 00:23:30 schwarze Exp $ */
+/*	$Id: mdoc_validate.c,v 1.350 2017/07/20 12:54:02 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2012 Kristaps Dzonsons 
  * Copyright (c) 2010-2017 Ingo Schwarze 
  * Copyright (c) 2010 Joerg Sonnenberger 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 #ifndef OSNAME
 #include 
 #endif
 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc_aux.h"
 #include "mandoc.h"
+#include "mandoc_xr.h"
 #include "roff.h"
 #include "mdoc.h"
 #include "libmandoc.h"
 #include "roff_int.h"
 #include "libmdoc.h"
 
 /* FIXME: .Bl -diag can't have non-text children in HEAD. */
 
 #define	POST_ARGS struct roff_man *mdoc
 
 enum	check_ineq {
 	CHECK_LT,
 	CHECK_GT,
 	CHECK_EQ
 };
 
 typedef	void	(*v_post)(POST_ARGS);
 
 static	int	 build_list(struct roff_man *, int);
 static	void	 check_text(struct roff_man *, int, int, char *);
-static	void	 check_bsd(struct roff_man *, int, int, char *);
 static	void	 check_argv(struct roff_man *,
 			struct roff_node *, struct mdoc_argv *);
 static	void	 check_args(struct roff_man *, struct roff_node *);
+static	void	 check_toptext(struct roff_man *, int, int, const char *);
 static	int	 child_an(const struct roff_node *);
 static	size_t		macro2len(enum roff_tok);
 static	void	 rewrite_macro2len(struct roff_man *, char **);
+static	int	 similar(const char *, const char *);
 
 static	void	 post_an(POST_ARGS);
 static	void	 post_an_norm(POST_ARGS);
 static	void	 post_at(POST_ARGS);
 static	void	 post_bd(POST_ARGS);
 static	void	 post_bf(POST_ARGS);
 static	void	 post_bk(POST_ARGS);
 static	void	 post_bl(POST_ARGS);
 static	void	 post_bl_block(POST_ARGS);
 static	void	 post_bl_head(POST_ARGS);
 static	void	 post_bl_norm(POST_ARGS);
 static	void	 post_bx(POST_ARGS);
 static	void	 post_defaults(POST_ARGS);
 static	void	 post_display(POST_ARGS);
 static	void	 post_dd(POST_ARGS);
+static	void	 post_delim(POST_ARGS);
+static	void	 post_delim_nb(POST_ARGS);
 static	void	 post_dt(POST_ARGS);
 static	void	 post_en(POST_ARGS);
 static	void	 post_es(POST_ARGS);
 static	void	 post_eoln(POST_ARGS);
 static	void	 post_ex(POST_ARGS);
 static	void	 post_fa(POST_ARGS);
 static	void	 post_fn(POST_ARGS);
 static	void	 post_fname(POST_ARGS);
 static	void	 post_fo(POST_ARGS);
 static	void	 post_hyph(POST_ARGS);
 static	void	 post_ignpar(POST_ARGS);
 static	void	 post_it(POST_ARGS);
 static	void	 post_lb(POST_ARGS);
 static	void	 post_nd(POST_ARGS);
 static	void	 post_nm(POST_ARGS);
 static	void	 post_ns(POST_ARGS);
 static	void	 post_obsolete(POST_ARGS);
 static	void	 post_os(POST_ARGS);
 static	void	 post_par(POST_ARGS);
 static	void	 post_prevpar(POST_ARGS);
 static	void	 post_root(POST_ARGS);
 static	void	 post_rs(POST_ARGS);
 static	void	 post_rv(POST_ARGS);
 static	void	 post_sh(POST_ARGS);
 static	void	 post_sh_head(POST_ARGS);
 static	void	 post_sh_name(POST_ARGS);
 static	void	 post_sh_see_also(POST_ARGS);
 static	void	 post_sh_authors(POST_ARGS);
 static	void	 post_sm(POST_ARGS);
 static	void	 post_st(POST_ARGS);
 static	void	 post_std(POST_ARGS);
+static	void	 post_sx(POST_ARGS);
 static	void	 post_useless(POST_ARGS);
 static	void	 post_xr(POST_ARGS);
 static	void	 post_xx(POST_ARGS);
 
 static	const v_post __mdoc_valids[MDOC_MAX - MDOC_Dd] = {
 	post_dd,	/* Dd */
 	post_dt,	/* Dt */
 	post_os,	/* Os */
 	post_sh,	/* Sh */
 	post_ignpar,	/* Ss */
 	post_par,	/* Pp */
 	post_display,	/* D1 */
 	post_display,	/* Dl */
 	post_display,	/* Bd */
 	NULL,		/* Ed */
 	post_bl,	/* Bl */
 	NULL,		/* El */
 	post_it,	/* It */
-	NULL,		/* Ad */
+	post_delim_nb,	/* Ad */
 	post_an,	/* An */
 	NULL,		/* Ap */
 	post_defaults,	/* Ar */
 	NULL,		/* Cd */
-	NULL,		/* Cm */
-	NULL,		/* Dv */
-	NULL,		/* Er */
-	NULL,		/* Ev */
+	post_delim_nb,	/* Cm */
+	post_delim_nb,	/* Dv */
+	post_delim_nb,	/* Er */
+	post_delim_nb,	/* Ev */
 	post_ex,	/* Ex */
 	post_fa,	/* Fa */
 	NULL,		/* Fd */
-	NULL,		/* Fl */
+	post_delim_nb,	/* Fl */
 	post_fn,	/* Fn */
-	NULL,		/* Ft */
-	NULL,		/* Ic */
-	NULL,		/* In */
+	post_delim_nb,	/* Ft */
+	post_delim_nb,	/* Ic */
+	post_delim_nb,	/* In */
 	post_defaults,	/* Li */
 	post_nd,	/* Nd */
 	post_nm,	/* Nm */
-	NULL,		/* Op */
+	post_delim_nb,	/* Op */
 	post_obsolete,	/* Ot */
 	post_defaults,	/* Pa */
 	post_rv,	/* Rv */
 	post_st,	/* St */
-	NULL,		/* Va */
-	NULL,		/* Vt */
+	post_delim_nb,	/* Va */
+	post_delim_nb,	/* Vt */
 	post_xr,	/* Xr */
 	NULL,		/* %A */
 	post_hyph,	/* %B */ /* FIXME: can be used outside Rs/Re. */
 	NULL,		/* %D */
 	NULL,		/* %I */
 	NULL,		/* %J */
 	post_hyph,	/* %N */
 	post_hyph,	/* %O */
 	NULL,		/* %P */
 	post_hyph,	/* %R */
 	post_hyph,	/* %T */ /* FIXME: can be used outside Rs/Re. */
 	NULL,		/* %V */
 	NULL,		/* Ac */
-	NULL,		/* Ao */
-	NULL,		/* Aq */
+	post_delim_nb,	/* Ao */
+	post_delim_nb,	/* Aq */
 	post_at,	/* At */
 	NULL,		/* Bc */
 	post_bf,	/* Bf */
-	NULL,		/* Bo */
+	post_delim_nb,	/* Bo */
 	NULL,		/* Bq */
 	post_xx,	/* Bsx */
 	post_bx,	/* Bx */
 	post_obsolete,	/* Db */
 	NULL,		/* Dc */
 	NULL,		/* Do */
 	NULL,		/* Dq */
 	NULL,		/* Ec */
 	NULL,		/* Ef */
-	NULL,		/* Em */
+	post_delim_nb,	/* Em */
 	NULL,		/* Eo */
 	post_xx,	/* Fx */
-	NULL,		/* Ms */
+	post_delim_nb,	/* Ms */
 	NULL,		/* No */
 	post_ns,	/* Ns */
 	post_xx,	/* Nx */
 	post_xx,	/* Ox */
 	NULL,		/* Pc */
 	NULL,		/* Pf */
-	NULL,		/* Po */
-	NULL,		/* Pq */
+	post_delim_nb,	/* Po */
+	post_delim_nb,	/* Pq */
 	NULL,		/* Qc */
-	NULL,		/* Ql */
-	NULL,		/* Qo */
-	NULL,		/* Qq */
+	post_delim_nb,	/* Ql */
+	post_delim_nb,	/* Qo */
+	post_delim_nb,	/* Qq */
 	NULL,		/* Re */
 	post_rs,	/* Rs */
 	NULL,		/* Sc */
-	NULL,		/* So */
-	NULL,		/* Sq */
+	post_delim_nb,	/* So */
+	post_delim_nb,	/* Sq */
 	post_sm,	/* Sm */
-	post_hyph,	/* Sx */
-	NULL,		/* Sy */
+	post_sx,	/* Sx */
+	post_delim_nb,	/* Sy */
 	post_useless,	/* Tn */
 	post_xx,	/* Ux */
 	NULL,		/* Xc */
 	NULL,		/* Xo */
 	post_fo,	/* Fo */
 	NULL,		/* Fc */
-	NULL,		/* Oo */
+	post_delim_nb,	/* Oo */
 	NULL,		/* Oc */
 	post_bk,	/* Bk */
 	NULL,		/* Ek */
 	post_eoln,	/* Bt */
-	NULL,		/* Hf */
+	post_obsolete,	/* Hf */
 	post_obsolete,	/* Fr */
 	post_eoln,	/* Ud */
 	post_lb,	/* Lb */
 	post_par,	/* Lp */
-	NULL,		/* Lk */
+	post_delim_nb,	/* Lk */
 	post_defaults,	/* Mt */
-	NULL,		/* Brq */
-	NULL,		/* Bro */
+	post_delim_nb,	/* Brq */
+	post_delim_nb,	/* Bro */
 	NULL,		/* Brc */
 	NULL,		/* %C */
 	post_es,	/* Es */
 	post_en,	/* En */
 	post_xx,	/* Dx */
 	NULL,		/* %Q */
 	NULL,		/* %U */
 	NULL,		/* Ta */
 };
 static	const v_post *const mdoc_valids = __mdoc_valids - MDOC_Dd;
 
 #define	RSORD_MAX 14 /* Number of `Rs' blocks. */
 
 static	const enum roff_tok rsord[RSORD_MAX] = {
 	MDOC__A,
 	MDOC__T,
 	MDOC__B,
 	MDOC__I,
 	MDOC__J,
 	MDOC__R,
 	MDOC__N,
 	MDOC__V,
 	MDOC__U,
 	MDOC__P,
 	MDOC__Q,
 	MDOC__C,
 	MDOC__D,
 	MDOC__O
 };
 
 static	const char * const secnames[SEC__MAX] = {
 	NULL,
 	"NAME",
 	"LIBRARY",
 	"SYNOPSIS",
 	"DESCRIPTION",
 	"CONTEXT",
 	"IMPLEMENTATION NOTES",
 	"RETURN VALUES",
 	"ENVIRONMENT",
 	"FILES",
 	"EXIT STATUS",
 	"EXAMPLES",
 	"DIAGNOSTICS",
 	"COMPATIBILITY",
 	"ERRORS",
 	"SEE ALSO",
 	"STANDARDS",
 	"HISTORY",
 	"AUTHORS",
 	"CAVEATS",
 	"BUGS",
 	"SECURITY CONSIDERATIONS",
 	NULL
 };
 
 
 void
 mdoc_node_validate(struct roff_man *mdoc)
 {
 	struct roff_node *n;
 	const v_post *p;
 
 	n = mdoc->last;
 	mdoc->last = mdoc->last->child;
 	while (mdoc->last != NULL) {
 		mdoc_node_validate(mdoc);
 		if (mdoc->last == n)
 			mdoc->last = mdoc->last->child;
 		else
 			mdoc->last = mdoc->last->next;
 	}
 
 	mdoc->last = n;
 	mdoc->next = ROFF_NEXT_SIBLING;
 	switch (n->type) {
 	case ROFFT_TEXT:
 		if (n->sec != SEC_SYNOPSIS ||
 		    (n->parent->tok != MDOC_Cd && n->parent->tok != MDOC_Fd))
 			check_text(mdoc, n->line, n->pos, n->string);
-		if (n->parent->tok == MDOC_Sh ||
-		    n->parent->tok == MDOC_Ss ||
-		    n->parent->tok == MDOC_It)
-			check_bsd(mdoc, n->line, n->pos, n->string);
+		if (n->parent->tok == MDOC_It ||
+		    (n->parent->type == ROFFT_BODY &&
+		     (n->parent->tok == MDOC_Sh ||
+		      n->parent->tok == MDOC_Ss)))
+			check_toptext(mdoc, n->line, n->pos, n->string);
 		break;
 	case ROFFT_EQN:
 	case ROFFT_TBL:
 		break;
 	case ROFFT_ROOT:
 		post_root(mdoc);
 		break;
 	default:
 		check_args(mdoc, mdoc->last);
 
 		/*
 		 * Closing delimiters are not special at the
 		 * beginning of a block, opening delimiters
 		 * are not special at the end.
 		 */
 
 		if (n->child != NULL)
 			n->child->flags &= ~NODE_DELIMC;
 		if (n->last != NULL)
 			n->last->flags &= ~NODE_DELIMO;
 
 		/* Call the macro's postprocessor. */
 
 		if (n->tok < ROFF_MAX) {
 			switch(n->tok) {
 			case ROFF_br:
 			case ROFF_sp:
 				post_par(mdoc);
 				break;
 			default:
 				roff_validate(mdoc);
 				break;
 			}
 			break;
 		}
 
 		assert(n->tok >= MDOC_Dd && n->tok < MDOC_MAX);
 		p = mdoc_valids + n->tok;
 		if (*p)
 			(*p)(mdoc);
 		if (mdoc->last == n)
 			mdoc_state(mdoc, n);
 		break;
 	}
 }
 
 static void
 check_args(struct roff_man *mdoc, struct roff_node *n)
 {
 	int		 i;
 
 	if (NULL == n->args)
 		return;
 
 	assert(n->args->argc);
 	for (i = 0; i < (int)n->args->argc; i++)
 		check_argv(mdoc, n, &n->args->argv[i]);
 }
 
 static void
 check_argv(struct roff_man *mdoc, struct roff_node *n, struct mdoc_argv *v)
 {
 	int		 i;
 
 	for (i = 0; i < (int)v->sz; i++)
 		check_text(mdoc, v->line, v->pos, v->value[i]);
 }
 
 static void
 check_text(struct roff_man *mdoc, int ln, int pos, char *p)
 {
 	char		*cp;
 
 	if (MDOC_LITERAL & mdoc->flags)
 		return;
 
 	for (cp = p; NULL != (p = strchr(p, '\t')); p++)
 		mandoc_msg(MANDOCERR_FI_TAB, mdoc->parse,
 		    ln, pos + (int)(p - cp), NULL);
 }
 
 static void
-check_bsd(struct roff_man *mdoc, int ln, int pos, char *p)
+check_toptext(struct roff_man *mdoc, int ln, int pos, const char *p)
 {
-	const char	*cp;
+	const char	*cp, *cpr;
 
+	if (*p == '\0')
+		return;
+
 	if ((cp = strstr(p, "OpenBSD")) != NULL)
 		mandoc_msg(MANDOCERR_BX, mdoc->parse,
 		    ln, pos + (cp - p), "Ox");
 	if ((cp = strstr(p, "NetBSD")) != NULL)
 		mandoc_msg(MANDOCERR_BX, mdoc->parse,
 		    ln, pos + (cp - p), "Nx");
 	if ((cp = strstr(p, "FreeBSD")) != NULL)
 		mandoc_msg(MANDOCERR_BX, mdoc->parse,
 		    ln, pos + (cp - p), "Fx");
 	if ((cp = strstr(p, "DragonFly")) != NULL)
 		mandoc_msg(MANDOCERR_BX, mdoc->parse,
 		    ln, pos + (cp - p), "Dx");
+
+	cp = p;
+	while ((cp = strstr(cp + 1, "()")) != NULL) {
+		for (cpr = cp - 1; cpr >= p; cpr--)
+			if (*cpr != '_' && !isalnum((unsigned char)*cpr))
+				break;
+		if ((cpr < p || *cpr == ' ') && cpr + 1 < cp) {
+			cpr++;
+			mandoc_vmsg(MANDOCERR_FUNC, mdoc->parse,
+			    ln, pos + (cpr - p),
+			    "%.*s()", (int)(cp - cpr), cpr);
+		}
+	}
 }
 
 static void
+post_delim(POST_ARGS)
+{
+	const struct roff_node	*nch;
+	const char		*lc;
+	enum mdelim		 delim;
+	enum roff_tok		 tok;
+
+	tok = mdoc->last->tok;
+	nch = mdoc->last->last;
+	if (nch == NULL || nch->type != ROFFT_TEXT)
+		return;
+	lc = strchr(nch->string, '\0') - 1;
+	if (lc < nch->string)
+		return;
+	delim = mdoc_isdelim(lc);
+	if (delim == DELIM_NONE || delim == DELIM_OPEN)
+		return;
+	if (*lc == ')' && (tok == MDOC_Nd || tok == MDOC_Sh ||
+	    tok == MDOC_Ss || tok == MDOC_Fo))
+		return;
+
+	mandoc_vmsg(MANDOCERR_DELIM, mdoc->parse,
+	    nch->line, nch->pos + (lc - nch->string),
+	    "%s%s %s", roff_name[tok],
+	    nch == mdoc->last->child ? "" : " ...", nch->string);
+}
+
+static void
+post_delim_nb(POST_ARGS)
+{
+	const struct roff_node	*nch;
+	const char		*lc, *cp;
+	int			 nw;
+	enum mdelim		 delim;
+	enum roff_tok		 tok;
+
+	/*
+	 * Find candidates: at least two bytes,
+	 * the last one a closing or middle delimiter.
+	 */
+
+	tok = mdoc->last->tok;
+	nch = mdoc->last->last;
+	if (nch == NULL || nch->type != ROFFT_TEXT)
+		return;
+	lc = strchr(nch->string, '\0') - 1;
+	if (lc <= nch->string)
+		return;
+	delim = mdoc_isdelim(lc);
+	if (delim == DELIM_NONE || delim == DELIM_OPEN)
+		return;
+
+	/*
+	 * Reduce false positives by allowing various cases.
+	 */
+
+	/* Escaped delimiters. */
+	if (lc > nch->string + 1 && lc[-2] == '\\' &&
+	    (lc[-1] == '&' || lc[-1] == 'e'))
+		return;
+
+	/* Specific byte sequences. */
+	switch (*lc) {
+	case ')':
+		for (cp = lc; cp >= nch->string; cp--)
+			if (*cp == '(')
+				return;
+		break;
+	case '.':
+		if (lc > nch->string + 1 && lc[-2] == '.' && lc[-1] == '.')
+			return;
+		if (lc[-1] == '.')
+			return;
+		break;
+	case ';':
+		if (tok == MDOC_Vt)
+			return;
+		break;
+	case '?':
+		if (lc[-1] == '?')
+			return;
+		break;
+	case ']':
+		for (cp = lc; cp >= nch->string; cp--)
+			if (*cp == '[')
+				return;
+		break;
+	case '|':
+		if (lc == nch->string + 1 && lc[-1] == '|')
+			return;
+	default:
+		break;
+	}
+
+	/* Exactly two non-alphanumeric bytes. */
+	if (lc == nch->string + 1 && !isalnum((unsigned char)lc[-1]))
+		return;
+
+	/* At least three alphabetic words with a sentence ending. */
+	if (strchr("!.:?", *lc) != NULL && (tok == MDOC_Em ||
+	    tok == MDOC_Li || tok == MDOC_Po || tok == MDOC_Pq ||
+	    tok == MDOC_Sy)) {
+		nw = 0;
+		for (cp = lc - 1; cp >= nch->string; cp--) {
+			if (*cp == ' ') {
+				nw++;
+				if (cp > nch->string && cp[-1] == ',')
+					cp--;
+			} else if (isalpha((unsigned int)*cp)) {
+				if (nw > 1)
+					return;
+			} else
+				break;
+		}
+	}
+
+	mandoc_vmsg(MANDOCERR_DELIM_NB, mdoc->parse,
+	    nch->line, nch->pos + (lc - nch->string),
+	    "%s%s %s", roff_name[tok],
+	    nch == mdoc->last->child ? "" : " ...", nch->string);
+}
+
+static void
 post_bl_norm(POST_ARGS)
 {
 	struct roff_node *n;
 	struct mdoc_argv *argv, *wa;
 	int		  i;
 	enum mdocargt	  mdoclt;
 	enum mdoc_list	  lt;
 
 	n = mdoc->last->parent;
 	n->norm->Bl.type = LIST__NONE;
 
 	/*
 	 * First figure out which kind of list to use: bind ourselves to
 	 * the first mentioned list type and warn about any remaining
 	 * ones.  If we find no list type, we default to LIST_item.
 	 */
 
 	wa = (n->args == NULL) ? NULL : n->args->argv;
 	mdoclt = MDOC_ARG_MAX;
 	for (i = 0; n->args && i < (int)n->args->argc; i++) {
 		argv = n->args->argv + i;
 		lt = LIST__NONE;
 		switch (argv->arg) {
 		/* Set list types. */
 		case MDOC_Bullet:
 			lt = LIST_bullet;
 			break;
 		case MDOC_Dash:
 			lt = LIST_dash;
 			break;
 		case MDOC_Enum:
 			lt = LIST_enum;
 			break;
 		case MDOC_Hyphen:
 			lt = LIST_hyphen;
 			break;
 		case MDOC_Item:
 			lt = LIST_item;
 			break;
 		case MDOC_Tag:
 			lt = LIST_tag;
 			break;
 		case MDOC_Diag:
 			lt = LIST_diag;
 			break;
 		case MDOC_Hang:
 			lt = LIST_hang;
 			break;
 		case MDOC_Ohang:
 			lt = LIST_ohang;
 			break;
 		case MDOC_Inset:
 			lt = LIST_inset;
 			break;
 		case MDOC_Column:
 			lt = LIST_column;
 			break;
 		/* Set list arguments. */
 		case MDOC_Compact:
 			if (n->norm->Bl.comp)
 				mandoc_msg(MANDOCERR_ARG_REP,
 				    mdoc->parse, argv->line,
 				    argv->pos, "Bl -compact");
 			n->norm->Bl.comp = 1;
 			break;
 		case MDOC_Width:
 			wa = argv;
 			if (0 == argv->sz) {
 				mandoc_msg(MANDOCERR_ARG_EMPTY,
 				    mdoc->parse, argv->line,
 				    argv->pos, "Bl -width");
 				n->norm->Bl.width = "0n";
 				break;
 			}
 			if (NULL != n->norm->Bl.width)
 				mandoc_vmsg(MANDOCERR_ARG_REP,
 				    mdoc->parse, argv->line,
 				    argv->pos, "Bl -width %s",
 				    argv->value[0]);
 			rewrite_macro2len(mdoc, argv->value);
 			n->norm->Bl.width = argv->value[0];
 			break;
 		case MDOC_Offset:
 			if (0 == argv->sz) {
 				mandoc_msg(MANDOCERR_ARG_EMPTY,
 				    mdoc->parse, argv->line,
 				    argv->pos, "Bl -offset");
 				break;
 			}
 			if (NULL != n->norm->Bl.offs)
 				mandoc_vmsg(MANDOCERR_ARG_REP,
 				    mdoc->parse, argv->line,
 				    argv->pos, "Bl -offset %s",
 				    argv->value[0]);
 			rewrite_macro2len(mdoc, argv->value);
 			n->norm->Bl.offs = argv->value[0];
 			break;
 		default:
 			continue;
 		}
 		if (LIST__NONE == lt)
 			continue;
 		mdoclt = argv->arg;
 
 		/* Check: multiple list types. */
 
 		if (LIST__NONE != n->norm->Bl.type) {
 			mandoc_vmsg(MANDOCERR_BL_REP,
 			    mdoc->parse, n->line, n->pos,
 			    "Bl -%s", mdoc_argnames[argv->arg]);
 			continue;
 		}
 
 		/* The list type should come first. */
 
 		if (n->norm->Bl.width ||
 		    n->norm->Bl.offs ||
 		    n->norm->Bl.comp)
 			mandoc_vmsg(MANDOCERR_BL_LATETYPE,
 			    mdoc->parse, n->line, n->pos, "Bl -%s",
 			    mdoc_argnames[n->args->argv[0].arg]);
 
 		n->norm->Bl.type = lt;
 		if (LIST_column == lt) {
 			n->norm->Bl.ncols = argv->sz;
 			n->norm->Bl.cols = (void *)argv->value;
 		}
 	}
 
 	/* Allow lists to default to LIST_item. */
 
 	if (LIST__NONE == n->norm->Bl.type) {
 		mandoc_msg(MANDOCERR_BL_NOTYPE, mdoc->parse,
 		    n->line, n->pos, "Bl");
 		n->norm->Bl.type = LIST_item;
 		mdoclt = MDOC_Item;
 	}
 
 	/*
 	 * Validate the width field.  Some list types don't need width
 	 * types and should be warned about them.  Others should have it
 	 * and must also be warned.  Yet others have a default and need
 	 * no warning.
 	 */
 
 	switch (n->norm->Bl.type) {
 	case LIST_tag:
-		if (NULL == n->norm->Bl.width)
+		if (n->norm->Bl.width == NULL)
 			mandoc_msg(MANDOCERR_BL_NOWIDTH, mdoc->parse,
 			    n->line, n->pos, "Bl -tag");
 		break;
 	case LIST_column:
 	case LIST_diag:
 	case LIST_ohang:
 	case LIST_inset:
 	case LIST_item:
-		if (n->norm->Bl.width)
+		if (n->norm->Bl.width != NULL)
 			mandoc_vmsg(MANDOCERR_BL_SKIPW, mdoc->parse,
 			    wa->line, wa->pos, "Bl -%s",
 			    mdoc_argnames[mdoclt]);
+		n->norm->Bl.width = NULL;
 		break;
 	case LIST_bullet:
 	case LIST_dash:
 	case LIST_hyphen:
-		if (NULL == n->norm->Bl.width)
+		if (n->norm->Bl.width == NULL)
 			n->norm->Bl.width = "2n";
 		break;
 	case LIST_enum:
-		if (NULL == n->norm->Bl.width)
+		if (n->norm->Bl.width == NULL)
 			n->norm->Bl.width = "3n";
 		break;
 	default:
 		break;
 	}
 }
 
 static void
 post_bd(POST_ARGS)
 {
 	struct roff_node *n;
 	struct mdoc_argv *argv;
 	int		  i;
 	enum mdoc_disp	  dt;
 
 	n = mdoc->last;
 	for (i = 0; n->args && i < (int)n->args->argc; i++) {
 		argv = n->args->argv + i;
 		dt = DISP__NONE;
 
 		switch (argv->arg) {
 		case MDOC_Centred:
 			dt = DISP_centered;
 			break;
 		case MDOC_Ragged:
 			dt = DISP_ragged;
 			break;
 		case MDOC_Unfilled:
 			dt = DISP_unfilled;
 			break;
 		case MDOC_Filled:
 			dt = DISP_filled;
 			break;
 		case MDOC_Literal:
 			dt = DISP_literal;
 			break;
 		case MDOC_File:
 			mandoc_msg(MANDOCERR_BD_FILE, mdoc->parse,
 			    n->line, n->pos, NULL);
 			break;
 		case MDOC_Offset:
 			if (0 == argv->sz) {
 				mandoc_msg(MANDOCERR_ARG_EMPTY,
 				    mdoc->parse, argv->line,
 				    argv->pos, "Bd -offset");
 				break;
 			}
 			if (NULL != n->norm->Bd.offs)
 				mandoc_vmsg(MANDOCERR_ARG_REP,
 				    mdoc->parse, argv->line,
 				    argv->pos, "Bd -offset %s",
 				    argv->value[0]);
 			rewrite_macro2len(mdoc, argv->value);
 			n->norm->Bd.offs = argv->value[0];
 			break;
 		case MDOC_Compact:
 			if (n->norm->Bd.comp)
 				mandoc_msg(MANDOCERR_ARG_REP,
 				    mdoc->parse, argv->line,
 				    argv->pos, "Bd -compact");
 			n->norm->Bd.comp = 1;
 			break;
 		default:
 			abort();
 		}
 		if (DISP__NONE == dt)
 			continue;
 
 		if (DISP__NONE == n->norm->Bd.type)
 			n->norm->Bd.type = dt;
 		else
 			mandoc_vmsg(MANDOCERR_BD_REP,
 			    mdoc->parse, n->line, n->pos,
 			    "Bd -%s", mdoc_argnames[argv->arg]);
 	}
 
 	if (DISP__NONE == n->norm->Bd.type) {
 		mandoc_msg(MANDOCERR_BD_NOTYPE, mdoc->parse,
 		    n->line, n->pos, "Bd");
 		n->norm->Bd.type = DISP_ragged;
 	}
 }
 
 /*
  * Stand-alone line macros.
  */
 
 static void
 post_an_norm(POST_ARGS)
 {
 	struct roff_node *n;
 	struct mdoc_argv *argv;
 	size_t	 i;
 
 	n = mdoc->last;
 	if (n->args == NULL)
 		return;
 
 	for (i = 1; i < n->args->argc; i++) {
 		argv = n->args->argv + i;
 		mandoc_vmsg(MANDOCERR_AN_REP,
 		    mdoc->parse, argv->line, argv->pos,
 		    "An -%s", mdoc_argnames[argv->arg]);
 	}
 
 	argv = n->args->argv;
 	if (argv->arg == MDOC_Split)
 		n->norm->An.auth = AUTH_split;
 	else if (argv->arg == MDOC_Nosplit)
 		n->norm->An.auth = AUTH_nosplit;
 	else
 		abort();
 }
 
 static void
 post_eoln(POST_ARGS)
 {
 	struct roff_node	*n;
 
 	post_useless(mdoc);
 	n = mdoc->last;
 	if (n->child != NULL)
 		mandoc_vmsg(MANDOCERR_ARG_SKIP, mdoc->parse, n->line,
 		    n->pos, "%s %s", roff_name[n->tok], n->child->string);
 
 	while (n->child != NULL)
 		roff_node_delete(mdoc, n->child);
 
 	roff_word_alloc(mdoc, n->line, n->pos, n->tok == MDOC_Bt ?
 	    "is currently in beta test." : "currently under development.");
 	mdoc->last->flags |= NODE_EOS | NODE_NOSRC;
 	mdoc->last = n;
 }
 
 static int
 build_list(struct roff_man *mdoc, int tok)
 {
 	struct roff_node	*n;
 	int			 ic;
 
 	n = mdoc->last->next;
 	for (ic = 1;; ic++) {
 		roff_elem_alloc(mdoc, n->line, n->pos, tok);
 		mdoc->last->flags |= NODE_NOSRC;
 		mdoc_node_relink(mdoc, n);
 		n = mdoc->last = mdoc->last->parent;
 		mdoc->next = ROFF_NEXT_SIBLING;
 		if (n->next == NULL)
 			return ic;
 		if (ic > 1 || n->next->next != NULL) {
 			roff_word_alloc(mdoc, n->line, n->pos, ",");
 			mdoc->last->flags |= NODE_DELIMC | NODE_NOSRC;
 		}
 		n = mdoc->last->next;
 		if (n->next == NULL) {
 			roff_word_alloc(mdoc, n->line, n->pos, "and");
 			mdoc->last->flags |= NODE_NOSRC;
 		}
 	}
 }
 
 static void
 post_ex(POST_ARGS)
 {
 	struct roff_node	*n;
 	int			 ic;
 
 	post_std(mdoc);
 
 	n = mdoc->last;
 	mdoc->next = ROFF_NEXT_CHILD;
 	roff_word_alloc(mdoc, n->line, n->pos, "The");
 	mdoc->last->flags |= NODE_NOSRC;
 
 	if (mdoc->last->next != NULL)
 		ic = build_list(mdoc, MDOC_Nm);
 	else if (mdoc->meta.name != NULL) {
 		roff_elem_alloc(mdoc, n->line, n->pos, MDOC_Nm);
 		mdoc->last->flags |= NODE_NOSRC;
 		roff_word_alloc(mdoc, n->line, n->pos, mdoc->meta.name);
 		mdoc->last->flags |= NODE_NOSRC;
 		mdoc->last = mdoc->last->parent;
 		mdoc->next = ROFF_NEXT_SIBLING;
 		ic = 1;
 	} else {
 		mandoc_msg(MANDOCERR_EX_NONAME, mdoc->parse,
 		    n->line, n->pos, "Ex");
 		ic = 0;
 	}
 
 	roff_word_alloc(mdoc, n->line, n->pos,
 	    ic > 1 ? "utilities exit\\~0" : "utility exits\\~0");
 	mdoc->last->flags |= NODE_NOSRC;
 	roff_word_alloc(mdoc, n->line, n->pos,
 	    "on success, and\\~>0 if an error occurs.");
 	mdoc->last->flags |= NODE_EOS | NODE_NOSRC;
 	mdoc->last = n;
 }
 
 static void
 post_lb(POST_ARGS)
 {
 	struct roff_node	*n;
 	const char		*p;
 
+	post_delim_nb(mdoc);
+
 	n = mdoc->last;
 	assert(n->child->type == ROFFT_TEXT);
 	mdoc->next = ROFF_NEXT_CHILD;
 
 	if ((p = mdoc_a2lib(n->child->string)) != NULL) {
 		n->child->flags |= NODE_NOPRT;
 		roff_word_alloc(mdoc, n->line, n->pos, p);
 		mdoc->last->flags = NODE_NOSRC;
 		mdoc->last = n;
 		return;
 	}
 
 	mandoc_vmsg(MANDOCERR_LB_BAD, mdoc->parse, n->child->line,
 	    n->child->pos, "Lb %s", n->child->string);
 
 	roff_word_alloc(mdoc, n->line, n->pos, "library");
 	mdoc->last->flags = NODE_NOSRC;
 	roff_word_alloc(mdoc, n->line, n->pos, "\\(Lq");
 	mdoc->last->flags = NODE_DELIMO | NODE_NOSRC;
 	mdoc->last = mdoc->last->next;
 	roff_word_alloc(mdoc, n->line, n->pos, "\\(Rq");
 	mdoc->last->flags = NODE_DELIMC | NODE_NOSRC;
 	mdoc->last = n;
 }
 
 static void
 post_rv(POST_ARGS)
 {
 	struct roff_node	*n;
 	int			 ic;
 
 	post_std(mdoc);
 
 	n = mdoc->last;
 	mdoc->next = ROFF_NEXT_CHILD;
 	if (n->child != NULL) {
 		roff_word_alloc(mdoc, n->line, n->pos, "The");
 		mdoc->last->flags |= NODE_NOSRC;
 		ic = build_list(mdoc, MDOC_Fn);
 		roff_word_alloc(mdoc, n->line, n->pos,
 		    ic > 1 ? "functions return" : "function returns");
 		mdoc->last->flags |= NODE_NOSRC;
 		roff_word_alloc(mdoc, n->line, n->pos,
 		    "the value\\~0 if successful;");
 	} else
 		roff_word_alloc(mdoc, n->line, n->pos, "Upon successful "
 		    "completion, the value\\~0 is returned;");
 	mdoc->last->flags |= NODE_NOSRC;
 
 	roff_word_alloc(mdoc, n->line, n->pos, "otherwise "
 	    "the value\\~\\-1 is returned and the global variable");
 	mdoc->last->flags |= NODE_NOSRC;
 	roff_elem_alloc(mdoc, n->line, n->pos, MDOC_Va);
 	mdoc->last->flags |= NODE_NOSRC;
 	roff_word_alloc(mdoc, n->line, n->pos, "errno");
 	mdoc->last->flags |= NODE_NOSRC;
 	mdoc->last = mdoc->last->parent;
 	mdoc->next = ROFF_NEXT_SIBLING;
 	roff_word_alloc(mdoc, n->line, n->pos,
 	    "is set to indicate the error.");
 	mdoc->last->flags |= NODE_EOS | NODE_NOSRC;
 	mdoc->last = n;
 }
 
 static void
 post_std(POST_ARGS)
 {
 	struct roff_node *n;
 
+	post_delim(mdoc);
+
 	n = mdoc->last;
 	if (n->args && n->args->argc == 1)
 		if (n->args->argv[0].arg == MDOC_Std)
 			return;
 
 	mandoc_msg(MANDOCERR_ARG_STD, mdoc->parse,
 	    n->line, n->pos, roff_name[n->tok]);
 }
 
 static void
 post_st(POST_ARGS)
 {
 	struct roff_node	 *n, *nch;
 	const char		 *p;
 
 	n = mdoc->last;
 	nch = n->child;
 	assert(nch->type == ROFFT_TEXT);
 
 	if ((p = mdoc_a2st(nch->string)) == NULL) {
 		mandoc_vmsg(MANDOCERR_ST_BAD, mdoc->parse,
 		    nch->line, nch->pos, "St %s", nch->string);
 		roff_node_delete(mdoc, n);
 		return;
 	}
 
 	nch->flags |= NODE_NOPRT;
 	mdoc->next = ROFF_NEXT_CHILD;
 	roff_word_alloc(mdoc, nch->line, nch->pos, p);
 	mdoc->last->flags |= NODE_NOSRC;
 	mdoc->last= n;
 }
 
 static void
 post_obsolete(POST_ARGS)
 {
 	struct roff_node *n;
 
 	n = mdoc->last;
 	if (n->type == ROFFT_ELEM || n->type == ROFFT_BLOCK)
 		mandoc_msg(MANDOCERR_MACRO_OBS, mdoc->parse,
 		    n->line, n->pos, roff_name[n->tok]);
 }
 
 static void
 post_useless(POST_ARGS)
 {
 	struct roff_node *n;
 
 	n = mdoc->last;
 	mandoc_msg(MANDOCERR_MACRO_USELESS, mdoc->parse,
 	    n->line, n->pos, roff_name[n->tok]);
 }
 
 /*
  * Block macros.
  */
 
 static void
 post_bf(POST_ARGS)
 {
 	struct roff_node *np, *nch;
 
 	/*
 	 * Unlike other data pointers, these are "housed" by the HEAD
 	 * element, which contains the goods.
 	 */
 
 	np = mdoc->last;
 	if (np->type != ROFFT_HEAD)
 		return;
 
 	assert(np->parent->type == ROFFT_BLOCK);
 	assert(np->parent->tok == MDOC_Bf);
 
 	/* Check the number of arguments. */
 
 	nch = np->child;
 	if (np->parent->args == NULL) {
 		if (nch == NULL) {
 			mandoc_msg(MANDOCERR_BF_NOFONT, mdoc->parse,
 			    np->line, np->pos, "Bf");
 			return;
 		}
 		nch = nch->next;
 	}
 	if (nch != NULL)
 		mandoc_vmsg(MANDOCERR_ARG_EXCESS, mdoc->parse,
 		    nch->line, nch->pos, "Bf ... %s", nch->string);
 
 	/* Extract argument into data. */
 
 	if (np->parent->args != NULL) {
 		switch (np->parent->args->argv[0].arg) {
 		case MDOC_Emphasis:
 			np->norm->Bf.font = FONT_Em;
 			break;
 		case MDOC_Literal:
 			np->norm->Bf.font = FONT_Li;
 			break;
 		case MDOC_Symbolic:
 			np->norm->Bf.font = FONT_Sy;
 			break;
 		default:
 			abort();
 		}
 		return;
 	}
 
 	/* Extract parameter into data. */
 
 	if ( ! strcmp(np->child->string, "Em"))
 		np->norm->Bf.font = FONT_Em;
 	else if ( ! strcmp(np->child->string, "Li"))
 		np->norm->Bf.font = FONT_Li;
 	else if ( ! strcmp(np->child->string, "Sy"))
 		np->norm->Bf.font = FONT_Sy;
 	else
 		mandoc_vmsg(MANDOCERR_BF_BADFONT, mdoc->parse,
 		    np->child->line, np->child->pos,
 		    "Bf %s", np->child->string);
 }
 
 static void
 post_fname(POST_ARGS)
 {
 	const struct roff_node	*n;
 	const char		*cp;
 	size_t			 pos;
 
 	n = mdoc->last->child;
 	pos = strcspn(n->string, "()");
 	cp = n->string + pos;
 	if ( ! (cp[0] == '\0' || (cp[0] == '(' && cp[1] == '*')))
 		mandoc_msg(MANDOCERR_FN_PAREN, mdoc->parse,
 		    n->line, n->pos + pos, n->string);
+	if (n->sec == SEC_SYNOPSIS && mdoc->meta.msec != NULL)
+		mandoc_xr_add(mdoc->meta.msec, n->string, -1, -1);
 }
 
 static void
 post_fn(POST_ARGS)
 {
 
 	post_fname(mdoc);
 	post_fa(mdoc);
 }
 
 static void
 post_fo(POST_ARGS)
 {
 	const struct roff_node	*n;
 
 	n = mdoc->last;
 
 	if (n->type != ROFFT_HEAD)
 		return;
 
 	if (n->child == NULL) {
 		mandoc_msg(MANDOCERR_FO_NOHEAD, mdoc->parse,
 		    n->line, n->pos, "Fo");
 		return;
 	}
 	if (n->child != n->last) {
 		mandoc_vmsg(MANDOCERR_ARG_EXCESS, mdoc->parse,
 		    n->child->next->line, n->child->next->pos,
 		    "Fo ... %s", n->child->next->string);
 		while (n->child != n->last)
 			roff_node_delete(mdoc, n->last);
-	}
+	} else
+		post_delim(mdoc);
 
 	post_fname(mdoc);
 }
 
 static void
 post_fa(POST_ARGS)
 {
 	const struct roff_node *n;
 	const char *cp;
 
 	for (n = mdoc->last->child; n != NULL; n = n->next) {
 		for (cp = n->string; *cp != '\0'; cp++) {
 			/* Ignore callbacks and alterations. */
 			if (*cp == '(' || *cp == '{')
 				break;
 			if (*cp != ',')
 				continue;
 			mandoc_msg(MANDOCERR_FA_COMMA, mdoc->parse,
 			    n->line, n->pos + (cp - n->string),
 			    n->string);
 			break;
 		}
 	}
+	post_delim_nb(mdoc);
 }
 
 static void
 post_nm(POST_ARGS)
 {
 	struct roff_node	*n;
 
 	n = mdoc->last;
 
+	if ((n->sec == SEC_NAME || n->sec == SEC_SYNOPSIS) &&
+	    n->child != NULL && n->child->type == ROFFT_TEXT &&
+	    mdoc->meta.msec != NULL)
+		mandoc_xr_add(mdoc->meta.msec, n->child->string, -1, -1);
+
 	if (n->last != NULL &&
 	    (n->last->tok == MDOC_Pp ||
 	     n->last->tok == MDOC_Lp))
 		mdoc_node_relink(mdoc, n->last);
 
 	if (mdoc->meta.name == NULL)
 		deroff(&mdoc->meta.name, n);
 
 	if (mdoc->meta.name == NULL ||
 	    (mdoc->lastsec == SEC_NAME && n->child == NULL))
 		mandoc_msg(MANDOCERR_NM_NONAME, mdoc->parse,
 		    n->line, n->pos, "Nm");
 
-	if ((n->type != ROFFT_ELEM && n->type != ROFFT_HEAD) ||
-	    (n->child != NULL && n->child->type == ROFFT_TEXT) ||
+	switch (n->type) {
+	case ROFFT_ELEM:
+		post_delim_nb(mdoc);
+		break;
+	case ROFFT_HEAD:
+		post_delim(mdoc);
+		break;
+	default:
+		return;
+	}
+
+	if ((n->child != NULL && n->child->type == ROFFT_TEXT) ||
 	    mdoc->meta.name == NULL)
 		return;
 
 	mdoc->next = ROFF_NEXT_CHILD;
 	roff_word_alloc(mdoc, n->line, n->pos, mdoc->meta.name);
 	mdoc->last->flags |= NODE_NOSRC;
 	mdoc->last = n;
 }
 
 static void
 post_nd(POST_ARGS)
 {
 	struct roff_node	*n;
-	size_t			 sz;
 
 	n = mdoc->last;
 
 	if (n->type != ROFFT_BODY)
 		return;
 
 	if (n->sec != SEC_NAME)
 		mandoc_msg(MANDOCERR_ND_LATE, mdoc->parse,
 		    n->line, n->pos, "Nd");
 
 	if (n->child == NULL)
 		mandoc_msg(MANDOCERR_ND_EMPTY, mdoc->parse,
 		    n->line, n->pos, "Nd");
-	else if (n->last->type == ROFFT_TEXT &&
-	    (sz = strlen(n->last->string)) != 0 &&
-	    n->last->string[sz - 1] == '.')
-		mandoc_msg(MANDOCERR_ND_DOT, mdoc->parse,
-		    n->last->line, n->last->pos + sz - 1, NULL);
+	else
+		post_delim(mdoc);
 
 	post_hyph(mdoc);
 }
 
 static void
 post_display(POST_ARGS)
 {
 	struct roff_node *n, *np;
 
 	n = mdoc->last;
 	switch (n->type) {
 	case ROFFT_BODY:
 		if (n->end != ENDBODY_NOT) {
 			if (n->tok == MDOC_Bd &&
 			    n->body->parent->args == NULL)
 				roff_node_delete(mdoc, n);
 		} else if (n->child == NULL)
 			mandoc_msg(MANDOCERR_BLK_EMPTY, mdoc->parse,
 			    n->line, n->pos, roff_name[n->tok]);
 		else if (n->tok == MDOC_D1)
 			post_hyph(mdoc);
 		break;
 	case ROFFT_BLOCK:
 		if (n->tok == MDOC_Bd) {
 			if (n->args == NULL) {
 				mandoc_msg(MANDOCERR_BD_NOARG,
 				    mdoc->parse, n->line, n->pos, "Bd");
 				mdoc->next = ROFF_NEXT_SIBLING;
 				while (n->body->child != NULL)
 					mdoc_node_relink(mdoc,
 					    n->body->child);
 				roff_node_delete(mdoc, n);
 				break;
 			}
 			post_bd(mdoc);
 			post_prevpar(mdoc);
 		}
 		for (np = n->parent; np != NULL; np = np->parent) {
 			if (np->type == ROFFT_BLOCK && np->tok == MDOC_Bd) {
 				mandoc_vmsg(MANDOCERR_BD_NEST,
 				    mdoc->parse, n->line, n->pos,
 				    "%s in Bd", roff_name[n->tok]);
 				break;
 			}
 		}
 		break;
 	default:
 		break;
 	}
 }
 
 static void
 post_defaults(POST_ARGS)
 {
 	struct roff_node *nn;
 
+	if (mdoc->last->child != NULL) {
+		post_delim_nb(mdoc);
+		return;
+	}
+
 	/*
 	 * The `Ar' defaults to "file ..." if no value is provided as an
 	 * argument; the `Mt' and `Pa' macros use "~"; the `Li' just
 	 * gets an empty string.
 	 */
 
-	if (mdoc->last->child != NULL)
-		return;
-
 	nn = mdoc->last;
-
 	switch (nn->tok) {
 	case MDOC_Ar:
 		mdoc->next = ROFF_NEXT_CHILD;
 		roff_word_alloc(mdoc, nn->line, nn->pos, "file");
 		mdoc->last->flags |= NODE_NOSRC;
 		roff_word_alloc(mdoc, nn->line, nn->pos, "...");
 		mdoc->last->flags |= NODE_NOSRC;
 		break;
 	case MDOC_Pa:
 	case MDOC_Mt:
 		mdoc->next = ROFF_NEXT_CHILD;
 		roff_word_alloc(mdoc, nn->line, nn->pos, "~");
 		mdoc->last->flags |= NODE_NOSRC;
 		break;
 	default:
 		abort();
 	}
 	mdoc->last = nn;
 }
 
 static void
 post_at(POST_ARGS)
 {
 	struct roff_node	*n, *nch;
 	const char		*att;
 
 	n = mdoc->last;
 	nch = n->child;
 
 	/*
 	 * If we have a child, look it up in the standard keys.  If a
 	 * key exist, use that instead of the child; if it doesn't,
 	 * prefix "AT&T UNIX " to the existing data.
 	 */
 
 	att = NULL;
 	if (nch != NULL && ((att = mdoc_a2att(nch->string)) == NULL))
 		mandoc_vmsg(MANDOCERR_AT_BAD, mdoc->parse,
 		    nch->line, nch->pos, "At %s", nch->string);
 
 	mdoc->next = ROFF_NEXT_CHILD;
 	if (att != NULL) {
 		roff_word_alloc(mdoc, nch->line, nch->pos, att);
 		nch->flags |= NODE_NOPRT;
 	} else
 		roff_word_alloc(mdoc, n->line, n->pos, "AT&T UNIX");
 	mdoc->last->flags |= NODE_NOSRC;
 	mdoc->last = n;
 }
 
 static void
 post_an(POST_ARGS)
 {
 	struct roff_node *np, *nch;
 
 	post_an_norm(mdoc);
 
 	np = mdoc->last;
 	nch = np->child;
 	if (np->norm->An.auth == AUTH__NONE) {
 		if (nch == NULL)
 			mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
 			    np->line, np->pos, "An");
+		else
+			post_delim_nb(mdoc);
 	} else if (nch != NULL)
 		mandoc_vmsg(MANDOCERR_ARG_EXCESS, mdoc->parse,
 		    nch->line, nch->pos, "An ... %s", nch->string);
 }
 
 static void
 post_en(POST_ARGS)
 {
 
 	post_obsolete(mdoc);
 	if (mdoc->last->type == ROFFT_BLOCK)
 		mdoc->last->norm->Es = mdoc->last_es;
 }
 
 static void
 post_es(POST_ARGS)
 {
 
 	post_obsolete(mdoc);
 	mdoc->last_es = mdoc->last;
 }
 
 static void
 post_xx(POST_ARGS)
 {
 	struct roff_node	*n;
 	const char		*os;
+	char			*v;
 
+	post_delim_nb(mdoc);
+
 	n = mdoc->last;
 	switch (n->tok) {
 	case MDOC_Bsx:
 		os = "BSD/OS";
 		break;
 	case MDOC_Dx:
 		os = "DragonFly";
 		break;
 	case MDOC_Fx:
 		os = "FreeBSD";
 		break;
 	case MDOC_Nx:
 		os = "NetBSD";
+		if (n->child == NULL)
+			break;
+		v = n->child->string;
+		if ((v[0] != '0' && v[0] != '1') || v[1] != '.' ||
+		    v[2] < '0' || v[2] > '9' ||
+		    v[3] < 'a' || v[3] > 'z' || v[4] != '\0')
+			break;
+		n->child->flags |= NODE_NOPRT;
+		mdoc->next = ROFF_NEXT_CHILD;
+		roff_word_alloc(mdoc, n->child->line, n->child->pos, v);
+		v = mdoc->last->string;
+		v[3] = toupper((unsigned char)v[3]);
+		mdoc->last->flags |= NODE_NOSRC;
+		mdoc->last = n;
 		break;
 	case MDOC_Ox:
 		os = "OpenBSD";
 		break;
 	case MDOC_Ux:
 		os = "UNIX";
 		break;
 	default:
 		abort();
 	}
 	mdoc->next = ROFF_NEXT_CHILD;
 	roff_word_alloc(mdoc, n->line, n->pos, os);
 	mdoc->last->flags |= NODE_NOSRC;
 	mdoc->last = n;
 }
 
 static void
 post_it(POST_ARGS)
 {
 	struct roff_node *nbl, *nit, *nch;
 	int		  i, cols;
 	enum mdoc_list	  lt;
 
 	post_prevpar(mdoc);
 
 	nit = mdoc->last;
 	if (nit->type != ROFFT_BLOCK)
 		return;
 
 	nbl = nit->parent->parent;
 	lt = nbl->norm->Bl.type;
 
 	switch (lt) {
 	case LIST_tag:
 	case LIST_hang:
 	case LIST_ohang:
 	case LIST_inset:
 	case LIST_diag:
 		if (nit->head->child == NULL)
 			mandoc_vmsg(MANDOCERR_IT_NOHEAD,
 			    mdoc->parse, nit->line, nit->pos,
 			    "Bl -%s It",
 			    mdoc_argnames[nbl->args->argv[0].arg]);
 		break;
 	case LIST_bullet:
 	case LIST_dash:
 	case LIST_enum:
 	case LIST_hyphen:
 		if (nit->body == NULL || nit->body->child == NULL)
 			mandoc_vmsg(MANDOCERR_IT_NOBODY,
 			    mdoc->parse, nit->line, nit->pos,
 			    "Bl -%s It",
 			    mdoc_argnames[nbl->args->argv[0].arg]);
 		/* FALLTHROUGH */
 	case LIST_item:
 		if ((nch = nit->head->child) != NULL)
 			mandoc_vmsg(MANDOCERR_ARG_SKIP, mdoc->parse,
 			    nit->line, nit->pos, "It %s",
 			    nch->string == NULL ? roff_name[nch->tok] :
 			    nch->string);
 		break;
 	case LIST_column:
 		cols = (int)nbl->norm->Bl.ncols;
 
 		assert(nit->head->child == NULL);
 
-		i = 0;
-		for (nch = nit->child; nch != NULL; nch = nch->next)
-			if (nch->type == ROFFT_BODY)
-				i++;
+		if (nit->head->next->child == NULL &&
+		    nit->head->next->next == NULL) {
+			mandoc_msg(MANDOCERR_MACRO_EMPTY, mdoc->parse,
+			    nit->line, nit->pos, "It");
+			roff_node_delete(mdoc, nit);
+			break;
+		}
 
+		i = 0;
+		for (nch = nit->child; nch != NULL; nch = nch->next) {
+			if (nch->type != ROFFT_BODY)
+				continue;
+			if (i++ && nch->flags & NODE_LINE)
+				mandoc_msg(MANDOCERR_TA_LINE, mdoc->parse,
+				    nch->line, nch->pos, "Ta");
+		}
 		if (i < cols || i > cols + 1)
 			mandoc_vmsg(MANDOCERR_BL_COL,
 			    mdoc->parse, nit->line, nit->pos,
 			    "%d columns, %d cells", cols, i);
+		else if (nit->head->next->child != NULL &&
+		    nit->head->next->child->line > nit->line)
+			mandoc_msg(MANDOCERR_IT_NOARG, mdoc->parse,
+			    nit->line, nit->pos, "Bl -column It");
 		break;
 	default:
 		abort();
 	}
 }
 
 static void
 post_bl_block(POST_ARGS)
 {
 	struct roff_node *n, *ni, *nc;
 
 	post_prevpar(mdoc);
 
 	n = mdoc->last;
 	for (ni = n->body->child; ni != NULL; ni = ni->next) {
 		if (ni->body == NULL)
 			continue;
 		nc = ni->body->last;
 		while (nc != NULL) {
 			switch (nc->tok) {
 			case MDOC_Pp:
 			case MDOC_Lp:
 			case ROFF_br:
 				break;
 			default:
 				nc = NULL;
 				continue;
 			}
 			if (ni->next == NULL) {
 				mandoc_msg(MANDOCERR_PAR_MOVE,
 				    mdoc->parse, nc->line, nc->pos,
 				    roff_name[nc->tok]);
 				mdoc_node_relink(mdoc, nc);
 			} else if (n->norm->Bl.comp == 0 &&
 			    n->norm->Bl.type != LIST_column) {
 				mandoc_vmsg(MANDOCERR_PAR_SKIP,
 				    mdoc->parse, nc->line, nc->pos,
 				    "%s before It", roff_name[nc->tok]);
 				roff_node_delete(mdoc, nc);
 			} else
 				break;
 			nc = ni->body->last;
 		}
 	}
 }
 
 /*
  * If the argument of -offset or -width is a macro,
  * replace it with the associated default width.
  */
 static void
 rewrite_macro2len(struct roff_man *mdoc, char **arg)
 {
 	size_t		  width;
 	enum roff_tok	  tok;
 
 	if (*arg == NULL)
 		return;
 	else if ( ! strcmp(*arg, "Ds"))
 		width = 6;
 	else if ((tok = roffhash_find(mdoc->mdocmac, *arg, 0)) == TOKEN_NONE)
 		return;
 	else
 		width = macro2len(tok);
 
 	free(*arg);
 	mandoc_asprintf(arg, "%zun", width);
 }
 
 static void
 post_bl_head(POST_ARGS)
 {
 	struct roff_node *nbl, *nh, *nch, *nnext;
 	struct mdoc_argv *argv;
 	int		  i, j;
 
 	post_bl_norm(mdoc);
 
 	nh = mdoc->last;
 	if (nh->norm->Bl.type != LIST_column) {
 		if ((nch = nh->child) == NULL)
 			return;
 		mandoc_vmsg(MANDOCERR_ARG_EXCESS, mdoc->parse,
 		    nch->line, nch->pos, "Bl ... %s", nch->string);
 		while (nch != NULL) {
 			roff_node_delete(mdoc, nch);
 			nch = nh->child;
 		}
 		return;
 	}
 
 	/*
 	 * Append old-style lists, where the column width specifiers
 	 * trail as macro parameters, to the new-style ("normal-form")
 	 * lists where they're argument values following -column.
 	 */
 
 	if (nh->child == NULL)
 		return;
 
 	nbl = nh->parent;
 	for (j = 0; j < (int)nbl->args->argc; j++)
 		if (nbl->args->argv[j].arg == MDOC_Column)
 			break;
 
 	assert(j < (int)nbl->args->argc);
 
 	/*
 	 * Accommodate for new-style groff column syntax.  Shuffle the
 	 * child nodes, all of which must be TEXT, as arguments for the
 	 * column field.  Then, delete the head children.
 	 */
 
 	argv = nbl->args->argv + j;
 	i = argv->sz;
 	for (nch = nh->child; nch != NULL; nch = nch->next)
 		argv->sz++;
 	argv->value = mandoc_reallocarray(argv->value,
 	    argv->sz, sizeof(char *));
 
 	nh->norm->Bl.ncols = argv->sz;
 	nh->norm->Bl.cols = (void *)argv->value;
 
 	for (nch = nh->child; nch != NULL; nch = nnext) {
 		argv->value[i++] = nch->string;
 		nch->string = NULL;
 		nnext = nch->next;
 		roff_node_delete(NULL, nch);
 	}
 	nh->child = NULL;
 }
 
 static void
 post_bl(POST_ARGS)
 {
 	struct roff_node	*nparent, *nprev; /* of the Bl block */
 	struct roff_node	*nblock, *nbody;  /* of the Bl */
 	struct roff_node	*nchild, *nnext;  /* of the Bl body */
 	const char		*prev_Er;
 	int			 order;
 
 	nbody = mdoc->last;
 	switch (nbody->type) {
 	case ROFFT_BLOCK:
 		post_bl_block(mdoc);
 		return;
 	case ROFFT_HEAD:
 		post_bl_head(mdoc);
 		return;
 	case ROFFT_BODY:
 		break;
 	default:
 		return;
 	}
 	if (nbody->end != ENDBODY_NOT)
 		return;
 
 	nchild = nbody->child;
 	if (nchild == NULL) {
 		mandoc_msg(MANDOCERR_BLK_EMPTY, mdoc->parse,
 		    nbody->line, nbody->pos, "Bl");
 		return;
 	}
 	while (nchild != NULL) {
 		nnext = nchild->next;
 		if (nchild->tok == MDOC_It ||
 		    (nchild->tok == MDOC_Sm &&
 		     nnext != NULL && nnext->tok == MDOC_It)) {
 			nchild = nnext;
 			continue;
 		}
 
 		/*
 		 * In .Bl -column, the first rows may be implicit,
 		 * that is, they may not start with .It macros.
 		 * Such rows may be followed by nodes generated on the
 		 * roff level, for example .TS, which cannot be moved
 		 * out of the list.  In that case, wrap such roff nodes
 		 * into an implicit row.
 		 */
 
 		if (nchild->prev != NULL) {
 			mdoc->last = nchild;
 			mdoc->next = ROFF_NEXT_SIBLING;
 			roff_block_alloc(mdoc, nchild->line,
 			    nchild->pos, MDOC_It);
 			roff_head_alloc(mdoc, nchild->line,
 			    nchild->pos, MDOC_It);
 			mdoc->next = ROFF_NEXT_SIBLING;
 			roff_body_alloc(mdoc, nchild->line,
 			    nchild->pos, MDOC_It);
 			while (nchild->tok != MDOC_It) {
 				mdoc_node_relink(mdoc, nchild);
 				if ((nchild = nnext) == NULL)
 					break;
 				nnext = nchild->next;
 				mdoc->next = ROFF_NEXT_SIBLING;
 			}
 			mdoc->last = nbody;
 			continue;
 		}
 
 		mandoc_msg(MANDOCERR_BL_MOVE, mdoc->parse,
 		    nchild->line, nchild->pos, roff_name[nchild->tok]);
 
 		/*
 		 * Move the node out of the Bl block.
 		 * First, collect all required node pointers.
 		 */
 
 		nblock  = nbody->parent;
 		nprev   = nblock->prev;
 		nparent = nblock->parent;
 
 		/*
 		 * Unlink this child.
 		 */
 
 		nbody->child = nnext;
 		if (nnext == NULL)
 			nbody->last  = NULL;
 		else
 			nnext->prev = NULL;
 
 		/*
 		 * Relink this child.
 		 */
 
 		nchild->parent = nparent;
 		nchild->prev   = nprev;
 		nchild->next   = nblock;
 
 		nblock->prev = nchild;
 		if (nprev == NULL)
 			nparent->child = nchild;
 		else
 			nprev->next = nchild;
 
 		nchild = nnext;
 	}
 
-	if (mdoc->meta.os_e != MDOC_OS_NETBSD)
+	if (mdoc->meta.os_e != MANDOC_OS_NETBSD)
 		return;
 
 	prev_Er = NULL;
 	for (nchild = nbody->child; nchild != NULL; nchild = nchild->next) {
 		if (nchild->tok != MDOC_It)
 			continue;
 		if ((nnext = nchild->head->child) == NULL)
 			continue;
 		if (nnext->type == ROFFT_BLOCK)
 			nnext = nnext->body->child;
 		if (nnext == NULL || nnext->tok != MDOC_Er)
 			continue;
 		nnext = nnext->child;
 		if (prev_Er != NULL) {
 			order = strcmp(prev_Er, nnext->string);
 			if (order > 0)
 				mandoc_vmsg(MANDOCERR_ER_ORDER,
 				    mdoc->parse, nnext->line, nnext->pos,
-				    "Er %s %s", prev_Er, nnext->string);
+				    "Er %s %s (NetBSD)",
+				    prev_Er, nnext->string);
 			else if (order == 0)
 				mandoc_vmsg(MANDOCERR_ER_REP,
 				    mdoc->parse, nnext->line, nnext->pos,
-				    "Er %s", prev_Er);
+				    "Er %s (NetBSD)", prev_Er);
 		}
 		prev_Er = nnext->string;
 	}
 }
 
 static void
 post_bk(POST_ARGS)
 {
 	struct roff_node	*n;
 
 	n = mdoc->last;
 
 	if (n->type == ROFFT_BLOCK && n->body->child == NULL) {
 		mandoc_msg(MANDOCERR_BLK_EMPTY,
 		    mdoc->parse, n->line, n->pos, "Bk");
 		roff_node_delete(mdoc, n);
 	}
 }
 
 static void
 post_sm(POST_ARGS)
 {
 	struct roff_node	*nch;
 
 	nch = mdoc->last->child;
 
 	if (nch == NULL) {
 		mdoc->flags ^= MDOC_SMOFF;
 		return;
 	}
 
 	assert(nch->type == ROFFT_TEXT);
 
 	if ( ! strcmp(nch->string, "on")) {
 		mdoc->flags &= ~MDOC_SMOFF;
 		return;
 	}
 	if ( ! strcmp(nch->string, "off")) {
 		mdoc->flags |= MDOC_SMOFF;
 		return;
 	}
 
 	mandoc_vmsg(MANDOCERR_SM_BAD,
 	    mdoc->parse, nch->line, nch->pos,
 	    "%s %s", roff_name[mdoc->last->tok], nch->string);
 	mdoc_node_relink(mdoc, nch);
 	return;
 }
 
 static void
 post_root(POST_ARGS)
 {
+	const char *openbsd_arch[] = {
+		"alpha", "amd64", "arm64", "armv7", "hppa", "i386",
+		"landisk", "loongson", "luna88k", "macppc", "mips64",
+		"octeon", "sgi", "socppc", "sparc64", NULL
+	};
+	const char *netbsd_arch[] = {
+		"acorn26", "acorn32", "algor", "alpha", "amiga",
+		"arc", "atari",
+		"bebox", "cats", "cesfic", "cobalt", "dreamcast",
+		"emips", "evbarm", "evbmips", "evbppc", "evbsh3", "evbsh5",
+		"hp300", "hpcarm", "hpcmips", "hpcsh", "hppa",
+		"i386", "ibmnws", "luna68k",
+		"mac68k", "macppc", "mipsco", "mmeye", "mvme68k", "mvmeppc",
+		"netwinder", "news68k", "newsmips", "next68k",
+		"pc532", "playstation2", "pmax", "pmppc", "prep",
+		"sandpoint", "sbmips", "sgimips", "shark",
+		"sparc", "sparc64", "sun2", "sun3",
+		"vax", "walnut", "x68k", "x86", "x86_64", "xen", NULL
+        };
+	const char **arches[] = { NULL, netbsd_arch, openbsd_arch };
+
 	struct roff_node *n;
+	const char **arch;
 
 	/* Add missing prologue data. */
 
 	if (mdoc->meta.date == NULL)
-		mdoc->meta.date = mdoc->quick ?
-		    mandoc_strdup("") :
-		    mandoc_normdate(mdoc->parse, NULL, 0, 0);
+		mdoc->meta.date = mdoc->quick ? mandoc_strdup("") :
+		    mandoc_normdate(mdoc, NULL, 0, 0);
 
 	if (mdoc->meta.title == NULL) {
 		mandoc_msg(MANDOCERR_DT_NOTITLE,
 		    mdoc->parse, 0, 0, "EOF");
 		mdoc->meta.title = mandoc_strdup("UNTITLED");
 	}
 
 	if (mdoc->meta.vol == NULL)
 		mdoc->meta.vol = mandoc_strdup("LOCAL");
 
 	if (mdoc->meta.os == NULL) {
 		mandoc_msg(MANDOCERR_OS_MISSING,
 		    mdoc->parse, 0, 0, NULL);
 		mdoc->meta.os = mandoc_strdup("");
+	} else if (mdoc->meta.os_e &&
+	    (mdoc->meta.rcsids & (1 << mdoc->meta.os_e)) == 0)
+		mandoc_msg(MANDOCERR_RCS_MISSING, mdoc->parse, 0, 0,
+		    mdoc->meta.os_e == MANDOC_OS_OPENBSD ?
+		    "(OpenBSD)" : "(NetBSD)");
+
+	if (mdoc->meta.arch != NULL &&
+	    (arch = arches[mdoc->meta.os_e]) != NULL) {
+		while (*arch != NULL && strcmp(*arch, mdoc->meta.arch))
+			arch++;
+		if (*arch == NULL) {
+			n = mdoc->first->child;
+			while (n->tok != MDOC_Dt)
+				n = n->next;
+			n = n->child->next->next;
+			mandoc_vmsg(MANDOCERR_ARCH_BAD,
+			    mdoc->parse, n->line, n->pos,
+			    "Dt ... %s %s", mdoc->meta.arch,
+			    mdoc->meta.os_e == MANDOC_OS_OPENBSD ?
+			    "(OpenBSD)" : "(NetBSD)");
+		}
 	}
 
 	/* Check that we begin with a proper `Sh'. */
 
 	n = mdoc->first->child;
 	while (n != NULL && n->tok != TOKEN_NONE &&
 	    mdoc_macros[n->tok].flags & MDOC_PROLOGUE)
 		n = n->next;
 
 	if (n == NULL)
 		mandoc_msg(MANDOCERR_DOC_EMPTY, mdoc->parse, 0, 0, NULL);
 	else if (n->tok != MDOC_Sh)
 		mandoc_msg(MANDOCERR_SEC_BEFORE, mdoc->parse,
 		    n->line, n->pos, roff_name[n->tok]);
 }
 
 static void
 post_rs(POST_ARGS)
 {
 	struct roff_node *np, *nch, *next, *prev;
 	int		  i, j;
 
 	np = mdoc->last;
 
 	if (np->type != ROFFT_BODY)
 		return;
 
 	if (np->child == NULL) {
 		mandoc_msg(MANDOCERR_RS_EMPTY, mdoc->parse,
 		    np->line, np->pos, "Rs");
 		return;
 	}
 
 	/*
 	 * The full `Rs' block needs special handling to order the
 	 * sub-elements according to `rsord'.  Pick through each element
 	 * and correctly order it.  This is an insertion sort.
 	 */
 
 	next = NULL;
 	for (nch = np->child->next; nch != NULL; nch = next) {
 		/* Determine order number of this child. */
 		for (i = 0; i < RSORD_MAX; i++)
 			if (rsord[i] == nch->tok)
 				break;
 
 		if (i == RSORD_MAX) {
 			mandoc_msg(MANDOCERR_RS_BAD, mdoc->parse,
 			    nch->line, nch->pos, roff_name[nch->tok]);
 			i = -1;
 		} else if (nch->tok == MDOC__J || nch->tok == MDOC__B)
 			np->norm->Rs.quote_T++;
 
 		/*
 		 * Remove this child from the chain.  This somewhat
 		 * repeats roff_node_unlink(), but since we're
 		 * just re-ordering, there's no need for the
 		 * full unlink process.
 		 */
 
 		if ((next = nch->next) != NULL)
 			next->prev = nch->prev;
 
 		if ((prev = nch->prev) != NULL)
 			prev->next = nch->next;
 
 		nch->prev = nch->next = NULL;
 
 		/*
 		 * Scan back until we reach a node that's
 		 * to be ordered before this child.
 		 */
 
 		for ( ; prev ; prev = prev->prev) {
 			/* Determine order of `prev'. */
 			for (j = 0; j < RSORD_MAX; j++)
 				if (rsord[j] == prev->tok)
 					break;
 			if (j == RSORD_MAX)
 				j = -1;
 
 			if (j <= i)
 				break;
 		}
 
 		/*
 		 * Set this child back into its correct place
 		 * in front of the `prev' node.
 		 */
 
 		nch->prev = prev;
 
 		if (prev == NULL) {
 			np->child->prev = nch;
 			nch->next = np->child;
 			np->child = nch;
 		} else {
 			if (prev->next)
 				prev->next->prev = nch;
 			nch->next = prev->next;
 			prev->next = nch;
 		}
 	}
 }
 
 /*
  * For some arguments of some macros,
  * convert all breakable hyphens into ASCII_HYPH.
  */
 static void
 post_hyph(POST_ARGS)
 {
 	struct roff_node	*nch;
 	char			*cp;
 
 	for (nch = mdoc->last->child; nch != NULL; nch = nch->next) {
 		if (nch->type != ROFFT_TEXT)
 			continue;
 		cp = nch->string;
 		if (*cp == '\0')
 			continue;
 		while (*(++cp) != '\0')
 			if (*cp == '-' &&
 			    isalpha((unsigned char)cp[-1]) &&
 			    isalpha((unsigned char)cp[1]))
 				*cp = ASCII_HYPH;
 	}
 }
 
 static void
 post_ns(POST_ARGS)
 {
+	struct roff_node	*n;
 
-	if (mdoc->last->flags & NODE_LINE)
+	n = mdoc->last;
+	if (n->flags & NODE_LINE ||
+	    (n->next != NULL && n->next->flags & NODE_DELIMC))
 		mandoc_msg(MANDOCERR_NS_SKIP, mdoc->parse,
-		    mdoc->last->line, mdoc->last->pos, NULL);
+		    n->line, n->pos, NULL);
 }
 
 static void
+post_sx(POST_ARGS)
+{
+	post_delim(mdoc);
+	post_hyph(mdoc);
+}
+
+static void
 post_sh(POST_ARGS)
 {
 
 	post_ignpar(mdoc);
 
 	switch (mdoc->last->type) {
 	case ROFFT_HEAD:
 		post_sh_head(mdoc);
 		break;
 	case ROFFT_BODY:
 		switch (mdoc->lastsec)  {
 		case SEC_NAME:
 			post_sh_name(mdoc);
 			break;
 		case SEC_SEE_ALSO:
 			post_sh_see_also(mdoc);
 			break;
 		case SEC_AUTHORS:
 			post_sh_authors(mdoc);
 			break;
 		default:
 			break;
 		}
 		break;
 	default:
 		break;
 	}
 }
 
 static void
 post_sh_name(POST_ARGS)
 {
 	struct roff_node *n;
 	int hasnm, hasnd;
 
 	hasnm = hasnd = 0;
 
 	for (n = mdoc->last->child; n != NULL; n = n->next) {
 		switch (n->tok) {
 		case MDOC_Nm:
 			if (hasnm && n->child != NULL)
 				mandoc_vmsg(MANDOCERR_NAMESEC_PUNCT,
 				    mdoc->parse, n->line, n->pos,
 				    "Nm %s", n->child->string);
 			hasnm = 1;
 			continue;
 		case MDOC_Nd:
 			hasnd = 1;
 			if (n->next != NULL)
 				mandoc_msg(MANDOCERR_NAMESEC_ND,
 				    mdoc->parse, n->line, n->pos, NULL);
 			break;
 		case TOKEN_NONE:
 			if (n->type == ROFFT_TEXT &&
 			    n->string[0] == ',' && n->string[1] == '\0' &&
 			    n->next != NULL && n->next->tok == MDOC_Nm) {
 				n = n->next;
 				continue;
 			}
 			/* FALLTHROUGH */
 		default:
 			mandoc_msg(MANDOCERR_NAMESEC_BAD, mdoc->parse,
 			    n->line, n->pos, roff_name[n->tok]);
 			continue;
 		}
 		break;
 	}
 
 	if ( ! hasnm)
 		mandoc_msg(MANDOCERR_NAMESEC_NONM, mdoc->parse,
 		    mdoc->last->line, mdoc->last->pos, NULL);
 	if ( ! hasnd)
 		mandoc_msg(MANDOCERR_NAMESEC_NOND, mdoc->parse,
 		    mdoc->last->line, mdoc->last->pos, NULL);
 }
 
 static void
 post_sh_see_also(POST_ARGS)
 {
 	const struct roff_node	*n;
 	const char		*name, *sec;
 	const char		*lastname, *lastsec, *lastpunct;
 	int			 cmp;
 
 	n = mdoc->last->child;
 	lastname = lastsec = lastpunct = NULL;
 	while (n != NULL) {
 		if (n->tok != MDOC_Xr ||
 		    n->child == NULL ||
 		    n->child->next == NULL)
 			break;
 
 		/* Process one .Xr node. */
 
 		name = n->child->string;
 		sec = n->child->next->string;
 		if (lastsec != NULL) {
 			if (lastpunct[0] != ',' || lastpunct[1] != '\0')
 				mandoc_vmsg(MANDOCERR_XR_PUNCT,
 				    mdoc->parse, n->line, n->pos,
 				    "%s before %s(%s)", lastpunct,
 				    name, sec);
 			cmp = strcmp(lastsec, sec);
 			if (cmp > 0)
 				mandoc_vmsg(MANDOCERR_XR_ORDER,
 				    mdoc->parse, n->line, n->pos,
 				    "%s(%s) after %s(%s)", name,
 				    sec, lastname, lastsec);
 			else if (cmp == 0 &&
 			    strcasecmp(lastname, name) > 0)
 				mandoc_vmsg(MANDOCERR_XR_ORDER,
 				    mdoc->parse, n->line, n->pos,
 				    "%s after %s", name, lastname);
 		}
 		lastname = name;
 		lastsec = sec;
 
 		/* Process the following node. */
 
 		n = n->next;
 		if (n == NULL)
 			break;
 		if (n->tok == MDOC_Xr) {
 			lastpunct = "none";
 			continue;
 		}
 		if (n->type != ROFFT_TEXT)
 			break;
 		for (name = n->string; *name != '\0'; name++)
 			if (isalpha((const unsigned char)*name))
 				return;
 		lastpunct = n->string;
 		if (n->next == NULL || n->next->tok == MDOC_Rs)
 			mandoc_vmsg(MANDOCERR_XR_PUNCT, mdoc->parse,
 			    n->line, n->pos, "%s after %s(%s)",
 			    lastpunct, lastname, lastsec);
 		n = n->next;
 	}
 }
 
 static int
 child_an(const struct roff_node *n)
 {
 
 	for (n = n->child; n != NULL; n = n->next)
 		if ((n->tok == MDOC_An && n->child != NULL) || child_an(n))
 			return 1;
 	return 0;
 }
 
 static void
 post_sh_authors(POST_ARGS)
 {
 
 	if ( ! child_an(mdoc->last))
 		mandoc_msg(MANDOCERR_AN_MISSING, mdoc->parse,
 		    mdoc->last->line, mdoc->last->pos, NULL);
 }
 
+/*
+ * Return an upper bound for the string distance (allowing
+ * transpositions).  Not a full Levenshtein implementation
+ * because Levenshtein is quadratic in the string length
+ * and this function is called for every standard name,
+ * so the check for each custom name would be cubic.
+ * The following crude heuristics is linear, resulting
+ * in quadratic behaviour for checking one custom name,
+ * which does not cause measurable slowdown.
+ */
+static int
+similar(const char *s1, const char *s2)
+{
+	const int	maxdist = 3;
+	int		dist = 0;
+
+	while (s1[0] != '\0' && s2[0] != '\0') {
+		if (s1[0] == s2[0]) {
+			s1++;
+			s2++;
+			continue;
+		}
+		if (++dist > maxdist)
+			return INT_MAX;
+		if (s1[1] == s2[1]) {  /* replacement */
+			s1++;
+			s2++;
+		} else if (s1[0] == s2[1] && s1[1] == s2[0]) {
+			s1 += 2;	/* transposition */
+			s2 += 2;
+		} else if (s1[0] == s2[1])  /* insertion */
+			s2++;
+		else if (s1[1] == s2[0])  /* deletion */
+			s1++;
+		else
+			return INT_MAX;
+	}
+	dist += strlen(s1) + strlen(s2);
+	return dist > maxdist ? INT_MAX : dist;
+}
+
 static void
 post_sh_head(POST_ARGS)
 {
 	struct roff_node	*nch;
 	const char		*goodsec;
+	const char *const	*testsec;
+	int			 dist, mindist;
 	enum roff_sec		 sec;
 
 	/*
 	 * Process a new section.  Sections are either "named" or
 	 * "custom".  Custom sections are user-defined, while named ones
 	 * follow a conventional order and may only appear in certain
 	 * manual sections.
 	 */
 
 	sec = mdoc->last->sec;
 
 	/* The NAME should be first. */
 
 	if (sec != SEC_NAME && mdoc->lastnamed == SEC_NONE)
 		mandoc_vmsg(MANDOCERR_NAMESEC_FIRST, mdoc->parse,
 		    mdoc->last->line, mdoc->last->pos, "Sh %s",
 		    sec != SEC_CUSTOM ? secnames[sec] :
 		    (nch = mdoc->last->child) == NULL ? "" :
 		    nch->type == ROFFT_TEXT ? nch->string :
 		    roff_name[nch->tok]);
 
 	/* The SYNOPSIS gets special attention in other areas. */
 
 	if (sec == SEC_SYNOPSIS) {
 		roff_setreg(mdoc->roff, "nS", 1, '=');
 		mdoc->flags |= MDOC_SYNOPSIS;
 	} else {
 		roff_setreg(mdoc->roff, "nS", 0, '=');
 		mdoc->flags &= ~MDOC_SYNOPSIS;
 	}
 
 	/* Mark our last section. */
 
 	mdoc->lastsec = sec;
 
 	/* We don't care about custom sections after this. */
 
-	if (sec == SEC_CUSTOM)
+	if (sec == SEC_CUSTOM) {
+		if ((nch = mdoc->last->child) == NULL ||
+		    nch->type != ROFFT_TEXT || nch->next != NULL)
+			return;
+		goodsec = NULL;
+		mindist = INT_MAX;
+		for (testsec = secnames + 1; *testsec != NULL; testsec++) {
+			dist = similar(nch->string, *testsec);
+			if (dist < mindist) {
+				goodsec = *testsec;
+				mindist = dist;
+			}
+		}
+		if (goodsec != NULL)
+			mandoc_vmsg(MANDOCERR_SEC_TYPO, mdoc->parse,
+			    nch->line, nch->pos, "Sh %s instead of %s",
+			    nch->string, goodsec);
 		return;
+	}
 
 	/*
 	 * Check whether our non-custom section is being repeated or is
 	 * out of order.
 	 */
 
 	if (sec == mdoc->lastnamed)
 		mandoc_vmsg(MANDOCERR_SEC_REP, mdoc->parse,
 		    mdoc->last->line, mdoc->last->pos,
 		    "Sh %s", secnames[sec]);
 
 	if (sec < mdoc->lastnamed)
 		mandoc_vmsg(MANDOCERR_SEC_ORDER, mdoc->parse,
 		    mdoc->last->line, mdoc->last->pos,
 		    "Sh %s", secnames[sec]);
 
 	/* Mark the last named section. */
 
 	mdoc->lastnamed = sec;
 
 	/* Check particular section/manual conventions. */
 
 	if (mdoc->meta.msec == NULL)
 		return;
 
 	goodsec = NULL;
 	switch (sec) {
 	case SEC_ERRORS:
 		if (*mdoc->meta.msec == '4')
 			break;
 		goodsec = "2, 3, 4, 9";
 		/* FALLTHROUGH */
 	case SEC_RETURN_VALUES:
 	case SEC_LIBRARY:
 		if (*mdoc->meta.msec == '2')
 			break;
 		if (*mdoc->meta.msec == '3')
 			break;
 		if (NULL == goodsec)
 			goodsec = "2, 3, 9";
 		/* FALLTHROUGH */
 	case SEC_CONTEXT:
 		if (*mdoc->meta.msec == '9')
 			break;
 		if (NULL == goodsec)
 			goodsec = "9";
 		mandoc_vmsg(MANDOCERR_SEC_MSEC, mdoc->parse,
 		    mdoc->last->line, mdoc->last->pos,
 		    "Sh %s for %s only", secnames[sec], goodsec);
 		break;
 	default:
 		break;
 	}
 }
 
 static void
 post_xr(POST_ARGS)
 {
 	struct roff_node *n, *nch;
 
 	n = mdoc->last;
 	nch = n->child;
 	if (nch->next == NULL) {
 		mandoc_vmsg(MANDOCERR_XR_NOSEC, mdoc->parse,
 		    n->line, n->pos, "Xr %s", nch->string);
-		return;
+	} else {
+		assert(nch->next == n->last);
+		if(mandoc_xr_add(nch->next->string, nch->string,
+		    nch->line, nch->pos))
+			mandoc_vmsg(MANDOCERR_XR_SELF, mdoc->parse,
+			    nch->line, nch->pos, "Xr %s %s",
+			    nch->string, nch->next->string);
 	}
-	assert(nch->next == n->last);
+	post_delim_nb(mdoc);
 }
 
 static void
 post_ignpar(POST_ARGS)
 {
 	struct roff_node *np;
 
 	switch (mdoc->last->type) {
 	case ROFFT_BLOCK:
 		post_prevpar(mdoc);
 		return;
 	case ROFFT_HEAD:
+		post_delim(mdoc);
 		post_hyph(mdoc);
 		return;
 	case ROFFT_BODY:
 		break;
 	default:
 		return;
 	}
 
 	if ((np = mdoc->last->child) != NULL)
 		if (np->tok == MDOC_Pp || np->tok == MDOC_Lp) {
 			mandoc_vmsg(MANDOCERR_PAR_SKIP,
 			    mdoc->parse, np->line, np->pos,
 			    "%s after %s", roff_name[np->tok],
 			    roff_name[mdoc->last->tok]);
 			roff_node_delete(mdoc, np);
 		}
 
 	if ((np = mdoc->last->last) != NULL)
 		if (np->tok == MDOC_Pp || np->tok == MDOC_Lp) {
 			mandoc_vmsg(MANDOCERR_PAR_SKIP, mdoc->parse,
 			    np->line, np->pos, "%s at the end of %s",
 			    roff_name[np->tok],
 			    roff_name[mdoc->last->tok]);
 			roff_node_delete(mdoc, np);
 		}
 }
 
 static void
 post_prevpar(POST_ARGS)
 {
 	struct roff_node *n;
 
 	n = mdoc->last;
 	if (NULL == n->prev)
 		return;
 	if (n->type != ROFFT_ELEM && n->type != ROFFT_BLOCK)
 		return;
 
 	/*
 	 * Don't allow prior `Lp' or `Pp' prior to a paragraph-type
 	 * block:  `Lp', `Pp', or non-compact `Bd' or `Bl'.
 	 */
 
 	if (n->prev->tok != MDOC_Pp &&
 	    n->prev->tok != MDOC_Lp &&
 	    n->prev->tok != ROFF_br)
 		return;
 	if (n->tok == MDOC_Bl && n->norm->Bl.comp)
 		return;
 	if (n->tok == MDOC_Bd && n->norm->Bd.comp)
 		return;
 	if (n->tok == MDOC_It && n->parent->norm->Bl.comp)
 		return;
 
 	mandoc_vmsg(MANDOCERR_PAR_SKIP, mdoc->parse,
 	    n->prev->line, n->prev->pos, "%s before %s",
 	    roff_name[n->prev->tok], roff_name[n->tok]);
 	roff_node_delete(mdoc, n->prev);
 }
 
 static void
 post_par(POST_ARGS)
 {
 	struct roff_node *np;
 
 	np = mdoc->last;
 	if (np->tok != ROFF_br && np->tok != ROFF_sp)
 		post_prevpar(mdoc);
 
 	if (np->tok == ROFF_sp) {
 		if (np->child != NULL && np->child->next != NULL)
 			mandoc_vmsg(MANDOCERR_ARG_EXCESS, mdoc->parse,
 			    np->child->next->line, np->child->next->pos,
 			    "sp ... %s", np->child->next->string);
 	} else if (np->child != NULL)
 		mandoc_vmsg(MANDOCERR_ARG_SKIP,
 		    mdoc->parse, np->line, np->pos, "%s %s",
 		    roff_name[np->tok], np->child->string);
 
 	if ((np = mdoc->last->prev) == NULL) {
 		np = mdoc->last->parent;
 		if (np->tok != MDOC_Sh && np->tok != MDOC_Ss)
 			return;
 	} else if (np->tok != MDOC_Pp && np->tok != MDOC_Lp &&
 	    (mdoc->last->tok != ROFF_br ||
 	     (np->tok != ROFF_sp && np->tok != ROFF_br)))
 		return;
 
 	mandoc_vmsg(MANDOCERR_PAR_SKIP, mdoc->parse,
 	    mdoc->last->line, mdoc->last->pos, "%s after %s",
 	    roff_name[mdoc->last->tok], roff_name[np->tok]);
 	roff_node_delete(mdoc, mdoc->last);
 }
 
 static void
 post_dd(POST_ARGS)
 {
 	struct roff_node *n;
 	char		 *datestr;
 
 	n = mdoc->last;
 	n->flags |= NODE_NOPRT;
 
 	if (mdoc->meta.date != NULL) {
 		mandoc_msg(MANDOCERR_PROLOG_REP, mdoc->parse,
 		    n->line, n->pos, "Dd");
 		free(mdoc->meta.date);
 	} else if (mdoc->flags & MDOC_PBODY)
 		mandoc_msg(MANDOCERR_PROLOG_LATE, mdoc->parse,
 		    n->line, n->pos, "Dd");
 	else if (mdoc->meta.title != NULL)
 		mandoc_msg(MANDOCERR_PROLOG_ORDER, mdoc->parse,
 		    n->line, n->pos, "Dd after Dt");
 	else if (mdoc->meta.os != NULL)
 		mandoc_msg(MANDOCERR_PROLOG_ORDER, mdoc->parse,
 		    n->line, n->pos, "Dd after Os");
 
 	if (n->child == NULL || n->child->string[0] == '\0') {
 		mdoc->meta.date = mdoc->quick ? mandoc_strdup("") :
-		    mandoc_normdate(mdoc->parse, NULL, n->line, n->pos);
+		    mandoc_normdate(mdoc, NULL, n->line, n->pos);
 		return;
 	}
 
 	datestr = NULL;
 	deroff(&datestr, n);
 	if (mdoc->quick)
 		mdoc->meta.date = datestr;
 	else {
-		mdoc->meta.date = mandoc_normdate(mdoc->parse,
+		mdoc->meta.date = mandoc_normdate(mdoc,
 		    datestr, n->line, n->pos);
 		free(datestr);
 	}
 }
 
 static void
 post_dt(POST_ARGS)
 {
 	struct roff_node *nn, *n;
 	const char	 *cp;
 	char		 *p;
 
 	n = mdoc->last;
 	n->flags |= NODE_NOPRT;
 
 	if (mdoc->flags & MDOC_PBODY) {
 		mandoc_msg(MANDOCERR_DT_LATE, mdoc->parse,
 		    n->line, n->pos, "Dt");
 		return;
 	}
 
 	if (mdoc->meta.title != NULL)
 		mandoc_msg(MANDOCERR_PROLOG_REP, mdoc->parse,
 		    n->line, n->pos, "Dt");
 	else if (mdoc->meta.os != NULL)
 		mandoc_msg(MANDOCERR_PROLOG_ORDER, mdoc->parse,
 		    n->line, n->pos, "Dt after Os");
 
 	free(mdoc->meta.title);
 	free(mdoc->meta.msec);
 	free(mdoc->meta.vol);
 	free(mdoc->meta.arch);
 
 	mdoc->meta.title = NULL;
 	mdoc->meta.msec = NULL;
 	mdoc->meta.vol = NULL;
 	mdoc->meta.arch = NULL;
 
 	/* Mandatory first argument: title. */
 
 	nn = n->child;
 	if (nn == NULL || *nn->string == '\0') {
 		mandoc_msg(MANDOCERR_DT_NOTITLE,
 		    mdoc->parse, n->line, n->pos, "Dt");
 		mdoc->meta.title = mandoc_strdup("UNTITLED");
 	} else {
 		mdoc->meta.title = mandoc_strdup(nn->string);
 
 		/* Check that all characters are uppercase. */
 
 		for (p = nn->string; *p != '\0'; p++)
 			if (islower((unsigned char)*p)) {
 				mandoc_vmsg(MANDOCERR_TITLE_CASE,
 				    mdoc->parse, nn->line,
 				    nn->pos + (p - nn->string),
 				    "Dt %s", nn->string);
 				break;
 			}
 	}
 
 	/* Mandatory second argument: section. */
 
 	if (nn != NULL)
 		nn = nn->next;
 
 	if (nn == NULL) {
 		mandoc_vmsg(MANDOCERR_MSEC_MISSING,
 		    mdoc->parse, n->line, n->pos,
 		    "Dt %s", mdoc->meta.title);
 		mdoc->meta.vol = mandoc_strdup("LOCAL");
 		return;  /* msec and arch remain NULL. */
 	}
 
 	mdoc->meta.msec = mandoc_strdup(nn->string);
 
 	/* Infer volume title from section number. */
 
 	cp = mandoc_a2msec(nn->string);
 	if (cp == NULL) {
 		mandoc_vmsg(MANDOCERR_MSEC_BAD, mdoc->parse,
 		    nn->line, nn->pos, "Dt ... %s", nn->string);
 		mdoc->meta.vol = mandoc_strdup(nn->string);
 	} else
 		mdoc->meta.vol = mandoc_strdup(cp);
 
 	/* Optional third argument: architecture. */
 
 	if ((nn = nn->next) == NULL)
 		return;
 
 	for (p = nn->string; *p != '\0'; p++)
 		*p = tolower((unsigned char)*p);
 	mdoc->meta.arch = mandoc_strdup(nn->string);
 
 	/* Ignore fourth and later arguments. */
 
 	if ((nn = nn->next) != NULL)
 		mandoc_vmsg(MANDOCERR_ARG_EXCESS, mdoc->parse,
 		    nn->line, nn->pos, "Dt ... %s", nn->string);
 }
 
 static void
 post_bx(POST_ARGS)
 {
 	struct roff_node	*n, *nch;
 	const char		*macro;
 
+	post_delim_nb(mdoc);
+
 	n = mdoc->last;
 	nch = n->child;
 
 	if (nch != NULL) {
 		macro = !strcmp(nch->string, "Open") ? "Ox" :
 		    !strcmp(nch->string, "Net") ? "Nx" :
 		    !strcmp(nch->string, "Free") ? "Fx" :
 		    !strcmp(nch->string, "DragonFly") ? "Dx" : NULL;
 		if (macro != NULL)
 			mandoc_msg(MANDOCERR_BX, mdoc->parse,
 			    n->line, n->pos, macro);
 		mdoc->last = nch;
 		nch = nch->next;
 		mdoc->next = ROFF_NEXT_SIBLING;
 		roff_elem_alloc(mdoc, n->line, n->pos, MDOC_Ns);
 		mdoc->last->flags |= NODE_NOSRC;
 		mdoc->next = ROFF_NEXT_SIBLING;
 	} else
 		mdoc->next = ROFF_NEXT_CHILD;
 	roff_word_alloc(mdoc, n->line, n->pos, "BSD");
 	mdoc->last->flags |= NODE_NOSRC;
 
 	if (nch == NULL) {
 		mdoc->last = n;
 		return;
 	}
 
 	roff_elem_alloc(mdoc, n->line, n->pos, MDOC_Ns);
 	mdoc->last->flags |= NODE_NOSRC;
 	mdoc->next = ROFF_NEXT_SIBLING;
 	roff_word_alloc(mdoc, n->line, n->pos, "-");
 	mdoc->last->flags |= NODE_NOSRC;
 	roff_elem_alloc(mdoc, n->line, n->pos, MDOC_Ns);
 	mdoc->last->flags |= NODE_NOSRC;
 	mdoc->last = n;
 
 	/*
 	 * Make `Bx's second argument always start with an uppercase
 	 * letter.  Groff checks if it's an "accepted" term, but we just
 	 * uppercase blindly.
 	 */
 
 	*nch->string = (char)toupper((unsigned char)*nch->string);
 }
 
 static void
 post_os(POST_ARGS)
 {
 #ifndef OSNAME
 	struct utsname	  utsname;
 	static char	 *defbuf;
 #endif
 	struct roff_node *n;
 
 	n = mdoc->last;
 	n->flags |= NODE_NOPRT;
 
 	if (mdoc->meta.os != NULL)
 		mandoc_msg(MANDOCERR_PROLOG_REP, mdoc->parse,
 		    n->line, n->pos, "Os");
 	else if (mdoc->flags & MDOC_PBODY)
 		mandoc_msg(MANDOCERR_PROLOG_LATE, mdoc->parse,
 		    n->line, n->pos, "Os");
 
+	post_delim(mdoc);
+
 	/*
 	 * Set the operating system by way of the `Os' macro.
 	 * The order of precedence is:
 	 * 1. the argument of the `Os' macro, unless empty
 	 * 2. the -Ios=foo command line argument, if provided
 	 * 3. -DOSNAME="\"foo\"", if provided during compilation
 	 * 4. "sysname release" from uname(3)
 	 */
 
 	free(mdoc->meta.os);
 	mdoc->meta.os = NULL;
 	deroff(&mdoc->meta.os, n);
 	if (mdoc->meta.os)
 		goto out;
 
-	if (mdoc->defos) {
-		mdoc->meta.os = mandoc_strdup(mdoc->defos);
+	if (mdoc->os_s != NULL) {
+		mdoc->meta.os = mandoc_strdup(mdoc->os_s);
 		goto out;
 	}
 
 #ifdef OSNAME
 	mdoc->meta.os = mandoc_strdup(OSNAME);
 #else /*!OSNAME */
 	if (defbuf == NULL) {
 		if (uname(&utsname) == -1) {
 			mandoc_msg(MANDOCERR_OS_UNAME, mdoc->parse,
 			    n->line, n->pos, "Os");
 			defbuf = mandoc_strdup("UNKNOWN");
 		} else
 			mandoc_asprintf(&defbuf, "%s %s",
 			    utsname.sysname, utsname.release);
 	}
 	mdoc->meta.os = mandoc_strdup(defbuf);
 #endif /*!OSNAME*/
 
-out:	mdoc->meta.os_e = strstr(mdoc->meta.os, "OpenBSD") != NULL ?
-	    MDOC_OS_OPENBSD : strstr(mdoc->meta.os, "NetBSD") != NULL ?
-	    MDOC_OS_NETBSD : MDOC_OS_OTHER;
+out:
+	if (mdoc->meta.os_e == MANDOC_OS_OTHER) {
+		if (strstr(mdoc->meta.os, "OpenBSD") != NULL)
+			mdoc->meta.os_e = MANDOC_OS_OPENBSD;
+		else if (strstr(mdoc->meta.os, "NetBSD") != NULL)
+			mdoc->meta.os_e = MANDOC_OS_NETBSD;
+	}
+
+	/*
+	 * This is the earliest point where we can check
+	 * Mdocdate conventions because we don't know
+	 * the operating system earlier.
+	 */
+
+	if (n->child != NULL)
+		mandoc_vmsg(MANDOCERR_OS_ARG, mdoc->parse,
+		    n->child->line, n->child->pos,
+		    "Os %s (%s)", n->child->string,
+		    mdoc->meta.os_e == MANDOC_OS_OPENBSD ?
+		    "OpenBSD" : "NetBSD");
+
+	while (n->tok != MDOC_Dd)
+		if ((n = n->prev) == NULL)
+			return;
+	if ((n = n->child) == NULL)
+		return;
+	if (strncmp(n->string, "$" "Mdocdate", 9)) {
+		if (mdoc->meta.os_e == MANDOC_OS_OPENBSD)
+			mandoc_vmsg(MANDOCERR_MDOCDATE_MISSING,
+			    mdoc->parse, n->line, n->pos,
+			    "Dd %s (OpenBSD)", n->string);
+	} else {
+		if (mdoc->meta.os_e == MANDOC_OS_NETBSD)
+			mandoc_vmsg(MANDOCERR_MDOCDATE,
+			    mdoc->parse, n->line, n->pos,
+			    "Dd %s (NetBSD)", n->string);
+	}
 }
 
 enum roff_sec
 mdoc_a2sec(const char *p)
 {
 	int		 i;
 
 	for (i = 0; i < (int)SEC__MAX; i++)
 		if (secnames[i] && 0 == strcmp(p, secnames[i]))
 			return (enum roff_sec)i;
 
 	return SEC_CUSTOM;
 }
 
 static size_t
 macro2len(enum roff_tok macro)
 {
 
 	switch (macro) {
 	case MDOC_Ad:
 		return 12;
 	case MDOC_Ao:
 		return 12;
 	case MDOC_An:
 		return 12;
 	case MDOC_Aq:
 		return 12;
 	case MDOC_Ar:
 		return 12;
 	case MDOC_Bo:
 		return 12;
 	case MDOC_Bq:
 		return 12;
 	case MDOC_Cd:
 		return 12;
 	case MDOC_Cm:
 		return 10;
 	case MDOC_Do:
 		return 10;
 	case MDOC_Dq:
 		return 12;
 	case MDOC_Dv:
 		return 12;
 	case MDOC_Eo:
 		return 12;
 	case MDOC_Em:
 		return 10;
 	case MDOC_Er:
 		return 17;
 	case MDOC_Ev:
 		return 15;
 	case MDOC_Fa:
 		return 12;
 	case MDOC_Fl:
 		return 10;
 	case MDOC_Fo:
 		return 16;
 	case MDOC_Fn:
 		return 16;
 	case MDOC_Ic:
 		return 10;
 	case MDOC_Li:
 		return 16;
 	case MDOC_Ms:
 		return 6;
 	case MDOC_Nm:
 		return 10;
 	case MDOC_No:
 		return 12;
 	case MDOC_Oo:
 		return 10;
 	case MDOC_Op:
 		return 14;
 	case MDOC_Pa:
 		return 32;
 	case MDOC_Pf:
 		return 12;
 	case MDOC_Po:
 		return 12;
 	case MDOC_Pq:
 		return 12;
 	case MDOC_Ql:
 		return 16;
 	case MDOC_Qo:
 		return 12;
 	case MDOC_So:
 		return 12;
 	case MDOC_Sq:
 		return 12;
 	case MDOC_Sy:
 		return 6;
 	case MDOC_Sx:
 		return 16;
 	case MDOC_Tn:
 		return 10;
 	case MDOC_Va:
 		return 12;
 	case MDOC_Vt:
 		return 12;
 	case MDOC_Xr:
 		return 10;
 	default:
 		break;
 	};
 	return 0;
 }
Index: vendor/mdocml/dist/msec.in
===================================================================
--- vendor/mdocml/dist/msec.in	(revision 321806)
+++ vendor/mdocml/dist/msec.in	(revision 321807)
@@ -1,40 +1,34 @@
-/*	$Id: msec.in,v 1.7 2014/08/26 11:21:40 schwarze Exp $ */
+/*	$Id: msec.in,v 1.8 2017/06/24 17:37:06 schwarze Exp $ */
 /*
  * Copyright (c) 2009 Kristaps Dzonsons 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
 /*
  * These are all possible manual-section macros and what they correspond
  * to when rendered as the volume title.
  *
  * Be sure to escape strings.
  */
 
 LINE("1",		"General Commands Manual")
 LINE("2",		"System Calls Manual")
 LINE("3",		"Library Functions Manual")
 LINE("3p",		"Perl Library Manual")
 LINE("4",		"Device Drivers Manual")
 LINE("5",		"File Formats Manual")
 LINE("6",		"Games Manual")
 LINE("7",		"Miscellaneous Information Manual")
 LINE("8",		"System Manager\'s Manual")
 LINE("9",		"Kernel Developer\'s Manual")
-LINE("X11",		"X11 Developer\'s Manual")
-LINE("X11R6",		"X11 Developer\'s Manual")
-LINE("unass",		"Unassociated")
-LINE("local",		"Local")
-LINE("draft",		"Draft")
-LINE("paper",		"Paper")
Index: vendor/mdocml/dist/out.c
===================================================================
--- vendor/mdocml/dist/out.c	(revision 321806)
+++ vendor/mdocml/dist/out.c	(revision 321807)
@@ -1,355 +1,369 @@
-/*	$Id: out.c,v 1.65 2017/06/08 18:11:22 schwarze Exp $ */
+/*	$Id: out.c,v 1.70 2017/06/27 18:25:02 schwarze Exp $ */
 /*
  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons 
  * Copyright (c) 2011, 2014, 2015, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
+#include 
 #include 
 #include 
 #include 
 
 #include "mandoc_aux.h"
 #include "mandoc.h"
 #include "out.h"
 
 static	void	tblcalc_data(struct rofftbl *, struct roffcol *,
 			const struct tbl_opts *, const struct tbl_dat *,
 			size_t);
 static	void	tblcalc_literal(struct rofftbl *, struct roffcol *,
 			const struct tbl_dat *, size_t);
 static	void	tblcalc_number(struct rofftbl *, struct roffcol *,
 			const struct tbl_opts *, const struct tbl_dat *);
 
 
 /*
  * Parse the *src string and store a scaling unit into *dst.
  * If the string doesn't specify the unit, use the default.
  * If no default is specified, fail.
  * Return a pointer to the byte after the last byte used,
  * or NULL on total failure.
  */
 const char *
 a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
 {
 	char		*endptr;
 
 	dst->unit = def == SCALE_MAX ? SCALE_BU : def;
 	dst->scale = strtod(src, &endptr);
 	if (endptr == src)
 		return NULL;
 
 	switch (*endptr++) {
 	case 'c':
 		dst->unit = SCALE_CM;
 		break;
 	case 'i':
 		dst->unit = SCALE_IN;
 		break;
 	case 'f':
 		dst->unit = SCALE_FS;
 		break;
 	case 'M':
 		dst->unit = SCALE_MM;
 		break;
 	case 'm':
 		dst->unit = SCALE_EM;
 		break;
 	case 'n':
 		dst->unit = SCALE_EN;
 		break;
 	case 'P':
 		dst->unit = SCALE_PC;
 		break;
 	case 'p':
 		dst->unit = SCALE_PT;
 		break;
 	case 'u':
 		dst->unit = SCALE_BU;
 		break;
 	case 'v':
 		dst->unit = SCALE_VS;
 		break;
-	case '\0':
-		endptr--;
-		/* FALLTHROUGH */
 	default:
+		endptr--;
 		if (SCALE_MAX == def)
 			return NULL;
 		dst->unit = def;
 		break;
 	}
 	return endptr;
 }
 
 /*
  * Calculate the abstract widths and decimal positions of columns in a
  * table.  This routine allocates the columns structures then runs over
  * all rows and cells in the table.  The function pointers in "tbl" are
  * used for the actual width calculations.
  */
 void
 tblcalc(struct rofftbl *tbl, const struct tbl_span *sp,
-	size_t totalwidth)
+    size_t offset, size_t rmargin)
 {
 	struct roffsu		 su;
 	const struct tbl_opts	*opts;
 	const struct tbl_dat	*dp;
 	struct roffcol		*col;
 	size_t			 ewidth, xwidth;
 	int			 spans;
 	int			 icol, maxcol, necol, nxcol, quirkcol;
 
 	/*
 	 * Allocate the master column specifiers.  These will hold the
 	 * widths and decimal positions for all cells in the column.  It
 	 * must be freed and nullified by the caller.
 	 */
 
 	assert(NULL == tbl->cols);
 	tbl->cols = mandoc_calloc((size_t)sp->opts->cols,
 	    sizeof(struct roffcol));
 	opts = sp->opts;
 
 	for (maxcol = -1; sp; sp = sp->next) {
 		if (TBL_SPAN_DATA != sp->pos)
 			continue;
 		spans = 1;
 		/*
 		 * Account for the data cells in the layout, matching it
 		 * to data cells in the data section.
 		 */
 		for (dp = sp->first; dp; dp = dp->next) {
 			/* Do not used spanned cells in the calculation. */
 			if (0 < --spans)
 				continue;
 			spans = dp->spans;
 			if (1 < spans)
 				continue;
 			icol = dp->layout->col;
-			if (maxcol < icol)
-				maxcol = icol;
+			while (maxcol < icol)
+				tbl->cols[++maxcol].spacing = SIZE_MAX;
 			col = tbl->cols + icol;
 			col->flags |= dp->layout->flags;
 			if (dp->layout->flags & TBL_CELL_WIGN)
 				continue;
 			if (dp->layout->wstr != NULL &&
 			    dp->layout->width == 0 &&
 			    a2roffsu(dp->layout->wstr, &su, SCALE_EN)
 			    != NULL)
 				dp->layout->width =
 				    (*tbl->sulen)(&su, tbl->arg);
 			if (col->width < dp->layout->width)
 				col->width = dp->layout->width;
-			tblcalc_data(tbl, col, opts, dp, dp->block ?
-			    totalwidth / (sp->opts->cols + 1) : 0);
+			if (dp->layout->spacing != SIZE_MAX &&
+			    (col->spacing == SIZE_MAX ||
+			     col->spacing < dp->layout->spacing))
+				col->spacing = dp->layout->spacing;
+			tblcalc_data(tbl, col, opts, dp,
+			    dp->block == 0 ? 0 :
+			    dp->layout->width ? dp->layout->width :
+			    rmargin ? (rmargin + sp->opts->cols / 2)
+			    / (sp->opts->cols + 1) : 0);
 		}
 	}
 
 	/*
 	 * Count columns to equalize and columns to maximize.
 	 * Find maximum width of the columns to equalize.
 	 * Find total width of the columns *not* to maximize.
 	 */
 
 	necol = nxcol = 0;
 	ewidth = xwidth = 0;
 	for (icol = 0; icol <= maxcol; icol++) {
 		col = tbl->cols + icol;
+		if (col->spacing == SIZE_MAX || icol == maxcol)
+			col->spacing = 3;
 		if (col->flags & TBL_CELL_EQUAL) {
 			necol++;
 			if (ewidth < col->width)
 				ewidth = col->width;
 		}
 		if (col->flags & TBL_CELL_WMAX)
 			nxcol++;
 		else
 			xwidth += col->width;
 	}
 
 	/*
 	 * Equalize columns, if requested for any of them.
 	 * Update total width of the columns not to maximize.
 	 */
 
 	if (necol) {
 		for (icol = 0; icol <= maxcol; icol++) {
 			col = tbl->cols + icol;
 			if ( ! (col->flags & TBL_CELL_EQUAL))
 				continue;
 			if (col->width == ewidth)
 				continue;
-			if (nxcol && totalwidth)
+			if (nxcol && rmargin)
 				xwidth += ewidth - col->width;
 			col->width = ewidth;
 		}
 	}
 
 	/*
 	 * If there are any columns to maximize, find the total
 	 * available width, deducting 3n margins between columns.
 	 * Distribute the available width evenly.
 	 */
 
-	if (nxcol && totalwidth) {
+	if (nxcol && rmargin) {
 		xwidth += 3*maxcol +
 		    (opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) ?
 		     2 : !!opts->lvert + !!opts->rvert);
-		if (xwidth >= totalwidth)
+		if (rmargin <= offset + xwidth)
 			return;
-		xwidth = totalwidth - xwidth;
+		xwidth = rmargin - offset - xwidth;
 
 		/*
 		 * Emulate a bug in GNU tbl width calculation that
 		 * manifests itself for large numbers of x-columns.
 		 * Emulating it for 5 x-columns gives identical
 		 * behaviour for up to 6 x-columns.
 		 */
 
 		if (nxcol == 5) {
 			quirkcol = xwidth % nxcol + 2;
 			if (quirkcol != 3 && quirkcol != 4)
 				quirkcol = -1;
 		} else
 			quirkcol = -1;
 
 		necol = 0;
 		ewidth = 0;
 		for (icol = 0; icol <= maxcol; icol++) {
 			col = tbl->cols + icol;
 			if ( ! (col->flags & TBL_CELL_WMAX))
 				continue;
 			col->width = (double)xwidth * ++necol / nxcol
 			    - ewidth + 0.4995;
 			if (necol == quirkcol)
 				col->width--;
 			ewidth += col->width;
 		}
 	}
 }
 
 static void
 tblcalc_data(struct rofftbl *tbl, struct roffcol *col,
     const struct tbl_opts *opts, const struct tbl_dat *dp, size_t mw)
 {
 	size_t		 sz;
 
 	/* Branch down into data sub-types. */
 
 	switch (dp->layout->pos) {
 	case TBL_CELL_HORIZ:
 	case TBL_CELL_DHORIZ:
 		sz = (*tbl->len)(1, tbl->arg);
 		if (col->width < sz)
 			col->width = sz;
 		break;
 	case TBL_CELL_LONG:
 	case TBL_CELL_CENTRE:
 	case TBL_CELL_LEFT:
 	case TBL_CELL_RIGHT:
 		tblcalc_literal(tbl, col, dp, mw);
 		break;
 	case TBL_CELL_NUMBER:
 		tblcalc_number(tbl, col, opts, dp);
 		break;
 	case TBL_CELL_DOWN:
 		break;
 	default:
 		abort();
 	}
 }
 
 static void
 tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
     const struct tbl_dat *dp, size_t mw)
 {
 	const char	*str;	/* Beginning of the first line. */
 	const char	*beg;	/* Beginning of the current line. */
 	char		*end;	/* End of the current line. */
-	size_t		 sz;	/* Length of the current line. */
+	size_t		 lsz;	/* Length of the current line. */
+	size_t		 wsz;	/* Length of the current word. */
 
 	if (dp->string == NULL || *dp->string == '\0')
 		return;
 	str = mw ? mandoc_strdup(dp->string) : dp->string;
+	lsz = 0;
 	for (beg = str; beg != NULL && *beg != '\0'; beg = end) {
 		end = mw ? strchr(beg, ' ') : NULL;
 		if (end != NULL) {
 			*end++ = '\0';
 			while (*end == ' ')
 				end++;
 		}
-		sz = (*tbl->slen)(beg, tbl->arg);
-		if (col->width < sz)
-			col->width = sz;
+		wsz = (*tbl->slen)(beg, tbl->arg);
+		if (mw && lsz && lsz + 1 + wsz <= mw)
+			lsz += 1 + wsz;
+		else
+			lsz = wsz;
+		if (col->width < lsz)
+			col->width = lsz;
 	}
 	if (mw)
 		free((void *)str);
 }
 
 static void
 tblcalc_number(struct rofftbl *tbl, struct roffcol *col,
 		const struct tbl_opts *opts, const struct tbl_dat *dp)
 {
 	int		 i;
 	size_t		 sz, psz, ssz, d;
 	const char	*str;
 	char		*cp;
 	char		 buf[2];
 
 	/*
 	 * First calculate number width and decimal place (last + 1 for
 	 * non-decimal numbers).  If the stored decimal is subsequent to
 	 * ours, make our size longer by that difference
 	 * (right-"shifting"); similarly, if ours is subsequent the
 	 * stored, then extend the stored size by the difference.
 	 * Finally, re-assign the stored values.
 	 */
 
 	str = dp->string ? dp->string : "";
 	sz = (*tbl->slen)(str, tbl->arg);
 
 	/* FIXME: TBL_DATA_HORIZ et al.? */
 
 	buf[0] = opts->decimal;
 	buf[1] = '\0';
 
 	psz = (*tbl->slen)(buf, tbl->arg);
 
 	if (NULL != (cp = strrchr(str, opts->decimal))) {
 		buf[1] = '\0';
 		for (ssz = 0, i = 0; cp != &str[i]; i++) {
 			buf[0] = str[i];
 			ssz += (*tbl->slen)(buf, tbl->arg);
 		}
 		d = ssz + psz;
 	} else
 		d = sz + psz;
 
 	/* Adjust the settings for this column. */
 
 	if (col->decimal > d) {
 		sz += col->decimal - d;
 		d = col->decimal;
 	} else
 		col->width += d - col->decimal;
 
 	if (sz > col->width)
 		col->width = sz;
 	if (d > col->decimal)
 		col->decimal = d;
 }
Index: vendor/mdocml/dist/out.h
===================================================================
--- vendor/mdocml/dist/out.h	(revision 321806)
+++ vendor/mdocml/dist/out.h	(revision 321807)
@@ -1,71 +1,72 @@
-/*	$Id: out.h,v 1.29 2017/06/08 18:11:22 schwarze Exp $ */
+/*	$Id: out.h,v 1.31 2017/06/27 18:25:02 schwarze Exp $ */
 /*
  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons 
  * Copyright (c) 2014, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
 enum	roffscale {
 	SCALE_CM, /* centimeters (c) */
 	SCALE_IN, /* inches (i) */
 	SCALE_PC, /* pica (P) */
 	SCALE_PT, /* points (p) */
 	SCALE_EM, /* ems (m) */
 	SCALE_MM, /* mini-ems (M) */
 	SCALE_EN, /* ens (n) */
 	SCALE_BU, /* default horizontal (u) */
 	SCALE_VS, /* default vertical (v) */
 	SCALE_FS, /* syn. for u (f) */
 	SCALE_MAX
 };
 
 struct	roffcol {
 	size_t		 width; /* width of cell */
 	size_t		 decimal; /* decimal position in cell */
+	size_t		 spacing; /* spacing after the column */
 	int		 flags; /* layout flags, see tbl_cell */
 };
 
 struct	roffsu {
 	enum roffscale	  unit;
 	double		  scale;
 };
 
 typedef	size_t	(*tbl_sulen)(const struct roffsu *, void *);
 typedef	size_t	(*tbl_strlen)(const char *, void *);
 typedef	size_t	(*tbl_len)(size_t, void *);
 
 struct	rofftbl {
 	tbl_sulen	 sulen; /* calculate scaling unit length */
 	tbl_strlen	 slen; /* calculate string length */
 	tbl_len		 len; /* produce width of empty space */
 	struct roffcol	*cols; /* master column specifiers */
 	void		*arg; /* passed to sulen, slen, and len */
 };
 
 #define	SCALE_VS_INIT(p, v) \
 	do { (p)->unit = SCALE_VS; \
 	     (p)->scale = (v); } \
 	while (/* CONSTCOND */ 0)
 
 #define	SCALE_HS_INIT(p, v) \
 	do { (p)->unit = SCALE_EN; \
 	     (p)->scale = (v); } \
 	while (/* CONSTCOND */ 0)
 
 
 struct	tbl_span;
 
 const char	 *a2roffsu(const char *, struct roffsu *, enum roffscale);
 void		  tblcalc(struct rofftbl *tbl,
-			const struct tbl_span *, size_t);
+			const struct tbl_span *, size_t, size_t);
Index: vendor/mdocml/dist/read.c
===================================================================
--- vendor/mdocml/dist/read.c	(revision 321806)
+++ vendor/mdocml/dist/read.c	(revision 321807)
@@ -1,892 +1,901 @@
-/*	$Id: read.c,v 1.173 2017/06/08 00:23:30 schwarze Exp $ */
+/*	$Id: read.c,v 1.192 2017/07/20 14:36:36 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons 
  * Copyright (c) 2010-2017 Ingo Schwarze 
  * Copyright (c) 2010, 2012 Joerg Sonnenberger 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 #include 
 #include 
 
 #include 
 #include 
-#if HAVE_ERR
-#include 
-#endif
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc_aux.h"
 #include "mandoc.h"
 #include "roff.h"
 #include "mdoc.h"
 #include "man.h"
 #include "libmandoc.h"
-#include "roff_int.h"
 
 #define	REPARSE_LIMIT	1000
 
 struct	mparse {
 	struct roff	 *roff; /* roff parser (!NULL) */
 	struct roff_man	 *man; /* man parser */
 	char		 *sodest; /* filename pointed to by .so */
 	const char	 *file; /* filename of current input file */
 	struct buf	 *primary; /* buffer currently being parsed */
 	struct buf	 *secondary; /* preprocessed copy of input */
-	const char	 *defos; /* default operating system */
+	const char	 *os_s; /* default operating system */
 	mandocmsg	  mmsg; /* warning/error message handler */
 	enum mandoclevel  file_status; /* status of current parse */
-	enum mandoclevel  wlevel; /* ignore messages below this */
+	enum mandocerr	  mmin; /* ignore messages below this */
 	int		  options; /* parser options */
 	int		  gzip; /* current input file is gzipped */
 	int		  filenc; /* encoding of the current file */
 	int		  reparse_count; /* finite interp. stack */
 	int		  line; /* line number in the file */
 };
 
 static	void	  choose_parser(struct mparse *);
 static	void	  resize_buf(struct buf *, size_t);
 static	int	  mparse_buf_r(struct mparse *, struct buf, size_t, int);
 static	int	  read_whole_file(struct mparse *, const char *, int,
 				struct buf *, int *);
 static	void	  mparse_end(struct mparse *);
 static	void	  mparse_parse_buffer(struct mparse *, struct buf,
 			const char *);
 
 static	const enum mandocerr	mandoclimits[MANDOCLEVEL_MAX] = {
 	MANDOCERR_OK,
-	MANDOCERR_STYLE,
+	MANDOCERR_OK,
 	MANDOCERR_WARNING,
 	MANDOCERR_ERROR,
 	MANDOCERR_UNSUPP,
 	MANDOCERR_MAX,
 	MANDOCERR_MAX
 };
 
 static	const char * const	mandocerrs[MANDOCERR_MAX] = {
 	"ok",
 
+	"base system convention",
+
+	"Mdocdate found",
+	"Mdocdate missing",
+	"unknown architecture",
+	"operating system explicitly specified",
+	"RCS id missing",
+	"referenced manual not found",
+
 	"generic style suggestion",
 
+	"legacy man(7) date format",
+	"lower case character in document title",
+	"duplicate RCS id",
+	"typo in section name",
+	"unterminated quoted argument",
 	"useless macro",
 	"consider using OS macro",
 	"errnos out of order",
 	"duplicate errno",
-	"description line ends with a full stop",
+	"trailing delimiter",
+	"no blank before trailing delimiter",
+	"fill mode already enabled, skipping",
+	"fill mode already disabled, skipping",
+	"function name without markup",
+	"whitespace at end of input line",
+	"bad comment style",
 
 	"generic warning",
 
 	/* related to the prologue */
 	"missing manual title, using UNTITLED",
 	"missing manual title, using \"\"",
-	"lower case character in document title",
 	"missing manual section, using \"\"",
 	"unknown manual section",
 	"missing date, using today's date",
 	"cannot parse date, using it verbatim",
+	"date in the future, using it anyway",
 	"missing Os macro, using \"\"",
-	"duplicate prologue macro",
 	"late prologue macro",
-	"skipping late title macro",
 	"prologue macros out of order",
 
 	/* related to document structure */
 	".so is fragile, better use ln(1)",
 	"no document body",
 	"content before first section header",
 	"first section is not \"NAME\"",
 	"NAME section without Nm before Nd",
 	"NAME section without description",
 	"description not at the end of NAME",
 	"bad NAME section content",
 	"missing comma before name",
 	"missing description line, using \"\"",
 	"description line outside NAME section",
 	"sections out of conventional order",
 	"duplicate section title",
 	"unexpected section",
+	"cross reference to self",
 	"unusual Xr order",
 	"unusual Xr punctuation",
 	"AUTHORS section without An macro",
 
 	/* related to macros and nesting */
 	"obsolete macro",
 	"macro neither callable nor escaped",
 	"skipping paragraph macro",
 	"moving paragraph macro out of list",
 	"skipping no-space macro",
 	"blocks badly nested",
 	"nested displays are not portable",
 	"moving content out of list",
-	"fill mode already enabled, skipping",
-	"fill mode already disabled, skipping",
+	"first macro on line",
 	"line scope broken",
 	"skipping blank line in line scope",
 
 	/* related to missing macro arguments */
 	"skipping empty request",
 	"conditional request controls empty scope",
 	"skipping empty macro",
 	"empty block",
 	"empty argument, using 0n",
 	"missing display type, using -ragged",
 	"list type is not the first argument",
 	"missing -width in -tag list, using 6n",
 	"missing utility name, using \"\"",
 	"missing function name, using \"\"",
 	"empty head in list item",
 	"empty list item",
+	"missing argument, using next line",
 	"missing font type, using \\fR",
 	"unknown font type, using \\fR",
 	"nothing follows prefix",
 	"empty reference block",
 	"missing section argument",
 	"missing -std argument, adding it",
 	"missing option string, using \"\"",
 	"missing resource identifier, using \"\"",
 	"missing eqn box, using \"\"",
 
 	/* related to bad macro arguments */
-	"unterminated quoted argument",
 	"duplicate argument",
 	"skipping duplicate argument",
 	"skipping duplicate display type",
 	"skipping duplicate list type",
 	"skipping -width argument",
 	"wrong number of cells",
 	"unknown AT&T UNIX version",
 	"comma in function argument",
 	"parenthesis in function name",
 	"unknown library name",
 	"invalid content in Rs block",
 	"invalid Boolean argument",
 	"unknown font, skipping request",
 	"odd number of characters in request",
 
 	/* related to plain text */
 	"blank line in fill mode, using .sp",
 	"tab in filled text",
-	"whitespace at end of input line",
 	"new sentence, new line",
-	"bad comment style",
 	"invalid escape sequence",
 	"undefined string, using \"\"",
 
 	/* related to tables */
 	"tbl line starts with span",
 	"tbl column starts with span",
 	"skipping vertical bar in tbl layout",
 
 	"generic error",
 
 	/* related to tables */
 	"non-alphabetic character in tbl options",
 	"skipping unknown tbl option",
 	"missing tbl option argument",
 	"wrong tbl option argument size",
 	"empty tbl layout",
 	"invalid character in tbl layout",
 	"unmatched parenthesis in tbl layout",
 	"tbl without any data cells",
 	"ignoring data in spanned tbl cell",
 	"ignoring extra tbl data cells",
 	"data block open at end of tbl",
 
 	/* related to document structure and macros */
 	NULL,
+	"duplicate prologue macro",
+	"skipping late title macro",
 	"input stack limit exceeded, infinite loop?",
 	"skipping bad character",
 	"skipping unknown macro",
 	"skipping insecure request",
 	"skipping item outside list",
 	"skipping column outside column list",
 	"skipping end of block that is not open",
 	"fewer RS blocks open, skipping",
 	"inserting missing end of block",
 	"appending missing end of block",
 
 	/* related to request and macro arguments */
 	"escaped character not allowed in a name",
 	"NOT IMPLEMENTED: Bd -file",
 	"skipping display without arguments",
 	"missing list type, using -item",
 	"argument is not numeric, using 1",
 	"missing manual name, using \"\"",
 	"uname(3) system call failed, using UNKNOWN",
 	"unknown standard specifier",
 	"skipping request without numeric argument",
 	"NOT IMPLEMENTED: .so with absolute path or \"..\"",
 	".so request failed",
 	"skipping all arguments",
 	"skipping excess arguments",
 	"divide by zero",
 
 	"unsupported feature",
 	"input too large",
 	"unsupported control character",
 	"unsupported roff request",
 	"eqn delim option in tbl",
 	"unsupported tbl layout modifier",
 	"ignoring macro in table",
 };
 
 static	const char * const	mandoclevels[MANDOCLEVEL_MAX] = {
 	"SUCCESS",
 	"STYLE",
 	"WARNING",
 	"ERROR",
 	"UNSUPP",
 	"BADARG",
 	"SYSERR"
 };
 
 
 static void
 resize_buf(struct buf *buf, size_t initial)
 {
 
 	buf->sz = buf->sz > initial/2 ? 2 * buf->sz : initial;
 	buf->buf = mandoc_realloc(buf->buf, buf->sz);
 }
 
 static void
 choose_parser(struct mparse *curp)
 {
 	char		*cp, *ep;
 	int		 format;
 
 	/*
 	 * If neither command line arguments -mdoc or -man select
 	 * a parser nor the roff parser found a .Dd or .TH macro
 	 * yet, look ahead in the main input buffer.
 	 */
 
 	if ((format = roff_getformat(curp->roff)) == 0) {
 		cp = curp->primary->buf;
 		ep = cp + curp->primary->sz;
 		while (cp < ep) {
 			if (*cp == '.' || *cp == '\'') {
 				cp++;
 				if (cp[0] == 'D' && cp[1] == 'd') {
 					format = MPARSE_MDOC;
 					break;
 				}
 				if (cp[0] == 'T' && cp[1] == 'H') {
 					format = MPARSE_MAN;
 					break;
 				}
 			}
 			cp = memchr(cp, '\n', ep - cp);
 			if (cp == NULL)
 				break;
 			cp++;
 		}
 	}
 
 	if (format == MPARSE_MDOC) {
 		curp->man->macroset = MACROSET_MDOC;
 		if (curp->man->mdocmac == NULL)
 			curp->man->mdocmac = roffhash_alloc(MDOC_Dd, MDOC_MAX);
 	} else {
 		curp->man->macroset = MACROSET_MAN;
 		if (curp->man->manmac == NULL)
 			curp->man->manmac = roffhash_alloc(MAN_TH, MAN_MAX);
 	}
 	curp->man->first->tok = TOKEN_NONE;
 }
 
 /*
  * Main parse routine for a buffer.
  * It assumes encoding and line numbering are already set up.
  * It can recurse directly (for invocations of user-defined
  * macros, inline equations, and input line traps)
  * and indirectly (for .so file inclusion).
  */
 static int
 mparse_buf_r(struct mparse *curp, struct buf blk, size_t i, int start)
 {
-	const struct tbl_span	*span;
 	struct buf	 ln;
 	const char	*save_file;
 	char		*cp;
 	size_t		 pos; /* byte number in the ln buffer */
 	enum rofferr	 rr;
 	int		 of;
 	int		 lnn; /* line number in the real file */
 	int		 fd;
 	unsigned char	 c;
 
 	memset(&ln, 0, sizeof(ln));
 
 	lnn = curp->line;
 	pos = 0;
 
 	while (i < blk.sz) {
 		if (0 == pos && '\0' == blk.buf[i])
 			break;
 
 		if (start) {
 			curp->line = lnn;
 			curp->reparse_count = 0;
 
 			if (lnn < 3 &&
 			    curp->filenc & MPARSE_UTF8 &&
 			    curp->filenc & MPARSE_LATIN1)
 				curp->filenc = preconv_cue(&blk, i);
 		}
 
 		while (i < blk.sz && (start || blk.buf[i] != '\0')) {
 
 			/*
 			 * When finding an unescaped newline character,
 			 * leave the character loop to process the line.
 			 * Skip a preceding carriage return, if any.
 			 */
 
 			if ('\r' == blk.buf[i] && i + 1 < blk.sz &&
 			    '\n' == blk.buf[i + 1])
 				++i;
 			if ('\n' == blk.buf[i]) {
 				++i;
 				++lnn;
 				break;
 			}
 
 			/*
 			 * Make sure we have space for the worst
 			 * case of 11 bytes: "\\[u10ffff]\0"
 			 */
 
 			if (pos + 11 > ln.sz)
 				resize_buf(&ln, 256);
 
 			/*
 			 * Encode 8-bit input.
 			 */
 
 			c = blk.buf[i];
 			if (c & 0x80) {
 				if ( ! (curp->filenc && preconv_encode(
 				    &blk, &i, &ln, &pos, &curp->filenc))) {
 					mandoc_vmsg(MANDOCERR_CHAR_BAD, curp,
 					    curp->line, pos, "0x%x", c);
 					ln.buf[pos++] = '?';
 					i++;
 				}
 				continue;
 			}
 
 			/*
 			 * Exclude control characters.
 			 */
 
 			if (c == 0x7f || (c < 0x20 && c != 0x09)) {
 				mandoc_vmsg(c == 0x00 || c == 0x04 ||
 				    c > 0x0a ? MANDOCERR_CHAR_BAD :
 				    MANDOCERR_CHAR_UNSUPP,
 				    curp, curp->line, pos, "0x%x", c);
 				i++;
 				if (c != '\r')
 					ln.buf[pos++] = '?';
 				continue;
 			}
 
 			ln.buf[pos++] = blk.buf[i++];
 		}
 
 		if (pos + 1 >= ln.sz)
 			resize_buf(&ln, 256);
 
 		if (i == blk.sz || blk.buf[i] == '\0')
 			ln.buf[pos++] = '\n';
 		ln.buf[pos] = '\0';
 
 		/*
 		 * A significant amount of complexity is contained by
 		 * the roff preprocessor.  It's line-oriented but can be
 		 * expressed on one line, so we need at times to
 		 * readjust our starting point and re-run it.  The roff
 		 * preprocessor can also readjust the buffers with new
 		 * data, so we pass them in wholesale.
 		 */
 
 		of = 0;
 
 		/*
 		 * Maintain a lookaside buffer of all parsed lines.  We
 		 * only do this if mparse_keep() has been invoked (the
 		 * buffer may be accessed with mparse_getkeep()).
 		 */
 
 		if (curp->secondary) {
 			curp->secondary->buf = mandoc_realloc(
 			    curp->secondary->buf,
 			    curp->secondary->sz + pos + 2);
 			memcpy(curp->secondary->buf +
 			    curp->secondary->sz,
 			    ln.buf, pos);
 			curp->secondary->sz += pos;
 			curp->secondary->buf
 				[curp->secondary->sz] = '\n';
 			curp->secondary->sz++;
 			curp->secondary->buf
 				[curp->secondary->sz] = '\0';
 		}
 rerun:
 		rr = roff_parseln(curp->roff, curp->line, &ln, &of);
 
 		switch (rr) {
 		case ROFF_REPARSE:
 			if (++curp->reparse_count > REPARSE_LIMIT)
 				mandoc_msg(MANDOCERR_ROFFLOOP, curp,
 				    curp->line, pos, NULL);
 			else if (mparse_buf_r(curp, ln, of, 0) == 1 ||
 			    start == 1) {
 				pos = 0;
 				continue;
 			}
 			free(ln.buf);
 			return 0;
 		case ROFF_APPEND:
 			pos = strlen(ln.buf);
 			continue;
 		case ROFF_RERUN:
 			goto rerun;
 		case ROFF_IGN:
 			pos = 0;
 			continue;
 		case ROFF_SO:
 			if ( ! (curp->options & MPARSE_SO) &&
 			    (i >= blk.sz || blk.buf[i] == '\0')) {
 				curp->sodest = mandoc_strdup(ln.buf + of);
 				free(ln.buf);
 				return 1;
 			}
 			/*
 			 * We remove `so' clauses from our lookaside
 			 * buffer because we're going to descend into
 			 * the file recursively.
 			 */
 			if (curp->secondary)
 				curp->secondary->sz -= pos + 1;
 			save_file = curp->file;
 			if ((fd = mparse_open(curp, ln.buf + of)) != -1) {
 				mparse_readfd(curp, fd, ln.buf + of);
 				close(fd);
 				curp->file = save_file;
 			} else {
 				curp->file = save_file;
 				mandoc_vmsg(MANDOCERR_SO_FAIL,
 				    curp, curp->line, pos,
 				    ".so %s", ln.buf + of);
 				ln.sz = mandoc_asprintf(&cp,
 				    ".sp\nSee the file %s.\n.sp",
 				    ln.buf + of);
 				free(ln.buf);
 				ln.buf = cp;
 				of = 0;
 				mparse_buf_r(curp, ln, of, 0);
 			}
 			pos = 0;
 			continue;
 		default:
 			break;
 		}
 
 		if (curp->man->macroset == MACROSET_NONE)
 			choose_parser(curp);
 
-		/*
-		 * Lastly, push down into the parsers themselves.
-		 * If libroff returns ROFF_TBL, then add it to the
-		 * currently open parse.  Since we only get here if
-		 * there does exist data (see tbl_data.c), we're
-		 * guaranteed that something's been allocated.
-		 * Do the same for ROFF_EQN.
-		 */
-
-		if (rr == ROFF_TBL)
-			while ((span = roff_span(curp->roff)) != NULL)
-				roff_addtbl(curp->man, span);
-		else if (rr == ROFF_EQN)
-			roff_addeqn(curp->man, roff_eqn(curp->roff));
-		else if ((curp->man->macroset == MACROSET_MDOC ?
+		if ((curp->man->macroset == MACROSET_MDOC ?
 		    mdoc_parseln(curp->man, curp->line, ln.buf, of) :
 		    man_parseln(curp->man, curp->line, ln.buf, of)) == 2)
 				break;
 
 		/* Temporary buffers typically are not full. */
 
 		if (0 == start && '\0' == blk.buf[i])
 			break;
 
 		/* Start the next input line. */
 
 		pos = 0;
 	}
 
 	free(ln.buf);
 	return 1;
 }
 
 static int
 read_whole_file(struct mparse *curp, const char *file, int fd,
 		struct buf *fb, int *with_mmap)
 {
 	struct stat	 st;
 	gzFile		 gz;
 	size_t		 off;
 	ssize_t		 ssz;
 
-	if (fstat(fd, &st) == -1)
-		err((int)MANDOCLEVEL_SYSERR, "%s", file);
+	if (fstat(fd, &st) == -1) {
+		mandoc_vmsg(MANDOCERR_FILE, curp, 0, 0,
+		    "fstat: %s", strerror(errno));
+		return 0;
+	}
 
 	/*
 	 * If we're a regular file, try just reading in the whole entry
 	 * via mmap().  This is faster than reading it into blocks, and
 	 * since each file is only a few bytes to begin with, I'm not
 	 * concerned that this is going to tank any machines.
 	 */
 
 	if (curp->gzip == 0 && S_ISREG(st.st_mode)) {
 		if (st.st_size > 0x7fffffff) {
 			mandoc_msg(MANDOCERR_TOOLARGE, curp, 0, 0, NULL);
 			return 0;
 		}
 		*with_mmap = 1;
 		fb->sz = (size_t)st.st_size;
 		fb->buf = mmap(NULL, fb->sz, PROT_READ, MAP_SHARED, fd, 0);
 		if (fb->buf != MAP_FAILED)
 			return 1;
 	}
 
 	if (curp->gzip) {
-		if ((gz = gzdopen(fd, "rb")) == NULL)
-			err((int)MANDOCLEVEL_SYSERR, "%s", file);
+		if ((gz = gzdopen(fd, "rb")) == NULL) {
+			mandoc_vmsg(MANDOCERR_FILE, curp, 0, 0,
+			    "gzdopen: %s", strerror(errno));
+			return 0;
+		}
 	} else
 		gz = NULL;
 
 	/*
 	 * If this isn't a regular file (like, say, stdin), then we must
 	 * go the old way and just read things in bit by bit.
 	 */
 
 	*with_mmap = 0;
 	off = 0;
 	fb->sz = 0;
 	fb->buf = NULL;
 	for (;;) {
 		if (off == fb->sz) {
 			if (fb->sz == (1U << 31)) {
 				mandoc_msg(MANDOCERR_TOOLARGE, curp,
 				    0, 0, NULL);
 				break;
 			}
 			resize_buf(fb, 65536);
 		}
 		ssz = curp->gzip ?
 		    gzread(gz, fb->buf + (int)off, fb->sz - off) :
 		    read(fd, fb->buf + (int)off, fb->sz - off);
 		if (ssz == 0) {
 			fb->sz = off;
 			return 1;
 		}
-		if (ssz == -1)
-			err((int)MANDOCLEVEL_SYSERR, "%s", file);
+		if (ssz == -1) {
+			mandoc_vmsg(MANDOCERR_FILE, curp, 0, 0,
+			    "read: %s", strerror(errno));
+			break;
+		}
 		off += (size_t)ssz;
 	}
 
 	free(fb->buf);
 	fb->buf = NULL;
 	return 0;
 }
 
 static void
 mparse_end(struct mparse *curp)
 {
 	if (curp->man->macroset == MACROSET_NONE)
 		curp->man->macroset = MACROSET_MAN;
 	if (curp->man->macroset == MACROSET_MDOC)
 		mdoc_endparse(curp->man);
 	else
 		man_endparse(curp->man);
 	roff_endparse(curp->roff);
 }
 
 static void
 mparse_parse_buffer(struct mparse *curp, struct buf blk, const char *file)
 {
 	struct buf	*svprimary;
 	const char	*svfile;
 	size_t		 offset;
 	static int	 recursion_depth;
 
 	if (64 < recursion_depth) {
 		mandoc_msg(MANDOCERR_ROFFLOOP, curp, curp->line, 0, NULL);
 		return;
 	}
 
 	/* Line number is per-file. */
 	svfile = curp->file;
 	curp->file = file;
 	svprimary = curp->primary;
 	curp->primary = &blk;
 	curp->line = 1;
 	recursion_depth++;
 
 	/* Skip an UTF-8 byte order mark. */
 	if (curp->filenc & MPARSE_UTF8 && blk.sz > 2 &&
 	    (unsigned char)blk.buf[0] == 0xef &&
 	    (unsigned char)blk.buf[1] == 0xbb &&
 	    (unsigned char)blk.buf[2] == 0xbf) {
 		offset = 3;
 		curp->filenc &= ~MPARSE_LATIN1;
 	} else
 		offset = 0;
 
 	mparse_buf_r(curp, blk, offset, 1);
 
 	if (--recursion_depth == 0)
 		mparse_end(curp);
 
 	curp->primary = svprimary;
 	curp->file = svfile;
 }
 
 enum mandoclevel
 mparse_readmem(struct mparse *curp, void *buf, size_t len,
 		const char *file)
 {
 	struct buf blk;
 
 	blk.buf = buf;
 	blk.sz = len;
 
 	mparse_parse_buffer(curp, blk, file);
 	return curp->file_status;
 }
 
 /*
  * Read the whole file into memory and call the parsers.
  * Called recursively when an .so request is encountered.
  */
 enum mandoclevel
 mparse_readfd(struct mparse *curp, int fd, const char *file)
 {
 	struct buf	 blk;
 	int		 with_mmap;
 	int		 save_filenc;
 
 	if (read_whole_file(curp, file, fd, &blk, &with_mmap)) {
 		save_filenc = curp->filenc;
 		curp->filenc = curp->options &
 		    (MPARSE_UTF8 | MPARSE_LATIN1);
 		mparse_parse_buffer(curp, blk, file);
 		curp->filenc = save_filenc;
 		if (with_mmap)
 			munmap(blk.buf, blk.sz);
 		else
 			free(blk.buf);
 	}
 	return curp->file_status;
 }
 
 int
 mparse_open(struct mparse *curp, const char *file)
 {
 	char		 *cp;
 	int		  fd;
 
 	curp->file = file;
 	cp = strrchr(file, '.');
 	curp->gzip = (cp != NULL && ! strcmp(cp + 1, "gz"));
 
 	/* First try to use the filename as it is. */
 
 	if ((fd = open(file, O_RDONLY)) != -1)
 		return fd;
 
 	/*
 	 * If that doesn't work and the filename doesn't
 	 * already  end in .gz, try appending .gz.
 	 */
 
 	if ( ! curp->gzip) {
 		mandoc_asprintf(&cp, "%s.gz", file);
 		fd = open(cp, O_RDONLY);
 		free(cp);
 		if (fd != -1) {
 			curp->gzip = 1;
 			return fd;
 		}
 	}
 
 	/* Neither worked, give up. */
 
 	mandoc_msg(MANDOCERR_FILE, curp, 0, 0, strerror(errno));
 	return -1;
 }
 
 struct mparse *
-mparse_alloc(int options, enum mandoclevel wlevel, mandocmsg mmsg,
-    const char *defos)
+mparse_alloc(int options, enum mandocerr mmin, mandocmsg mmsg,
+    enum mandoc_os os_e, const char *os_s)
 {
 	struct mparse	*curp;
 
 	curp = mandoc_calloc(1, sizeof(struct mparse));
 
 	curp->options = options;
-	curp->wlevel = wlevel;
+	curp->mmin = mmin;
 	curp->mmsg = mmsg;
-	curp->defos = defos;
+	curp->os_s = os_s;
 
 	curp->roff = roff_alloc(curp, options);
-	curp->man = roff_man_alloc( curp->roff, curp, curp->defos,
+	curp->man = roff_man_alloc(curp->roff, curp, curp->os_s,
 		curp->options & MPARSE_QUICK ? 1 : 0);
 	if (curp->options & MPARSE_MDOC) {
 		curp->man->macroset = MACROSET_MDOC;
 		if (curp->man->mdocmac == NULL)
 			curp->man->mdocmac = roffhash_alloc(MDOC_Dd, MDOC_MAX);
 	} else if (curp->options & MPARSE_MAN) {
 		curp->man->macroset = MACROSET_MAN;
 		if (curp->man->manmac == NULL)
 			curp->man->manmac = roffhash_alloc(MAN_TH, MAN_MAX);
 	}
 	curp->man->first->tok = TOKEN_NONE;
+	curp->man->meta.os_e = os_e;
 	return curp;
 }
 
 void
 mparse_reset(struct mparse *curp)
 {
 	roff_reset(curp->roff);
 	roff_man_reset(curp->man);
 
 	free(curp->sodest);
 	curp->sodest = NULL;
 
 	if (curp->secondary)
 		curp->secondary->sz = 0;
 
 	curp->file_status = MANDOCLEVEL_OK;
 	curp->gzip = 0;
 }
 
 void
 mparse_free(struct mparse *curp)
 {
 
 	roffhash_free(curp->man->mdocmac);
 	roffhash_free(curp->man->manmac);
 	roff_man_free(curp->man);
 	roff_free(curp->roff);
 	if (curp->secondary)
 		free(curp->secondary->buf);
 
 	free(curp->secondary);
 	free(curp->sodest);
 	free(curp);
 }
 
 void
 mparse_result(struct mparse *curp, struct roff_man **man,
 	char **sodest)
 {
 
 	if (sodest && NULL != (*sodest = curp->sodest)) {
 		*man = NULL;
 		return;
 	}
 	if (man)
 		*man = curp->man;
 }
 
 void
 mparse_updaterc(struct mparse *curp, enum mandoclevel *rc)
 {
 	if (curp->file_status > *rc)
 		*rc = curp->file_status;
 }
 
 void
 mandoc_vmsg(enum mandocerr t, struct mparse *m,
 		int ln, int pos, const char *fmt, ...)
 {
 	char		 buf[256];
 	va_list		 ap;
 
 	va_start(ap, fmt);
 	(void)vsnprintf(buf, sizeof(buf), fmt, ap);
 	va_end(ap);
 
 	mandoc_msg(t, m, ln, pos, buf);
 }
 
 void
 mandoc_msg(enum mandocerr er, struct mparse *m,
 		int ln, int col, const char *msg)
 {
 	enum mandoclevel level;
 
+	if (er < m->mmin && er != MANDOCERR_FILE)
+		return;
+
 	level = MANDOCLEVEL_UNSUPP;
 	while (er < mandoclimits[level])
 		level--;
-
-	if (level < m->wlevel && er != MANDOCERR_FILE)
-		return;
 
 	if (m->mmsg)
 		(*m->mmsg)(er, level, m->file, ln, col, msg);
 
 	if (m->file_status < level)
 		m->file_status = level;
 }
 
 const char *
 mparse_strerror(enum mandocerr er)
 {
 
 	return mandocerrs[er];
 }
 
 const char *
 mparse_strlevel(enum mandoclevel lvl)
 {
 	return mandoclevels[lvl];
 }
 
 void
 mparse_keep(struct mparse *p)
 {
 
 	assert(NULL == p->secondary);
 	p->secondary = mandoc_calloc(1, sizeof(struct buf));
 }
 
 const char *
 mparse_getkeep(const struct mparse *p)
 {
 
 	assert(p->secondary);
 	return p->secondary->sz ? p->secondary->buf : NULL;
 }
Index: vendor/mdocml/dist/roff.7
===================================================================
--- vendor/mdocml/dist/roff.7	(revision 321806)
+++ vendor/mdocml/dist/roff.7	(revision 321807)
@@ -1,2168 +1,2188 @@
-.\"	$Id: roff.7,v 1.86 2017/06/07 00:50:34 schwarze Exp $
+.\"	$Id: roff.7,v 1.94 2017/07/05 12:25:17 schwarze Exp $
 .\"
 .\" Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons 
 .\" Copyright (c) 2010,2011,2013-2015,2017 Ingo Schwarze 
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above
 .\" copyright notice and this permission notice appear in all copies.
 .\"
 .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: June 7 2017 $
+.Dd $Mdocdate: July 5 2017 $
 .Dt ROFF 7
 .Os
 .Sh NAME
 .Nm roff
 .Nd roff language reference for mandoc
 .Sh DESCRIPTION
 The
 .Nm roff
 language is a general purpose text formatting language.
 Since traditional implementations of the
 .Xr mdoc 7
 and
 .Xr man 7
 manual formatting languages are based on it,
 many real-world manuals use small numbers of
 .Nm
 requests and escape sequences intermixed with their
 .Xr mdoc 7
 or
 .Xr man 7
 code.
 To properly format such manuals, the
 .Xr mandoc 1
 utility supports a tiny subset of
 .Nm
 requests and escapes.
 Only these requests and escapes supported by
 .Xr mandoc 1
 are documented in the present manual,
 together with the basic language syntax shared by
 .Nm ,
 .Xr mdoc 7 ,
 and
 .Xr man 7 .
 For complete
 .Nm
 manuals, consult the
 .Sx SEE ALSO
 section.
 .Pp
 Input lines beginning with the control character
 .Sq \&.
 are parsed for requests and macros.
 Such lines are called
 .Dq request lines
 or
 .Dq macro lines ,
 respectively.
 Requests change the processing state and manipulate the formatting;
 some macros also define the document structure and produce formatted
 output.
 The single quote
 .Pq Qq \(aq
 is accepted as an alternative control character,
 treated by
 .Xr mandoc 1
 just like
 .Ql \&.
 .Pp
 Lines not beginning with control characters are called
 .Dq text lines .
 They provide free-form text to be printed; the formatting of the text
 depends on the respective processing context.
 .Sh LANGUAGE SYNTAX
 .Nm
 documents may contain only graphable 7-bit ASCII characters, the space
 character, and, in certain circumstances, the tab character.
 The backslash character
 .Sq \e
 indicates the start of an escape sequence, used for example for
 .Sx Comments ,
 .Sx Special Characters ,
 .Sx Predefined Strings ,
 and
 user-defined strings defined using the
 .Sx ds
 request.
 For a listing of escape sequences, consult the
 .Sx ESCAPE SEQUENCE REFERENCE
 below.
 .Ss Comments
 Text following an escaped double-quote
 .Sq \e\(dq ,
 whether in a request, macro, or text line, is ignored to the end of the line.
 A request line beginning with a control character and comment escape
 .Sq \&.\e\(dq
 is also ignored.
 Furthermore, request lines with only a control character and optional
 trailing whitespace are stripped from input.
 .Pp
 Examples:
 .Bd -literal -offset indent -compact
 \&.\e\(dq This is a comment line.
 \&.\e\(dq The next line is ignored:
 \&.
 \&.Sh EXAMPLES \e\(dq This is a comment, too.
 \&example text \e\(dq And so is this.
 .Ed
 .Ss Special Characters
 Special characters are used to encode special glyphs and are rendered
 differently across output media.
 They may occur in request, macro, and text lines.
 Sequences begin with the escape character
 .Sq \e
 followed by either an open-parenthesis
 .Sq \&(
 for two-character sequences; an open-bracket
 .Sq \&[
 for n-character sequences (terminated at a close-bracket
 .Sq \&] ) ;
 or a single one character sequence.
 .Pp
 Examples:
 .Bl -tag -width Ds -offset indent -compact
 .It Li \e(em
 Two-letter em dash escape.
 .It Li \ee
 One-letter backslash escape.
 .El
 .Pp
 See
 .Xr mandoc_char 7
 for a complete list.
 .Ss Text Decoration
 Terms may be text-decorated using the
 .Sq \ef
 escape followed by an indicator: B (bold), I (italic), R (regular), or P
 (revert to previous mode).
 A numerical representation 3, 2, or 1 (bold, italic, and regular,
 respectively) may be used instead.
 The indicator or numerical representative may be preceded by C
 (constant-width), which is ignored.
 .Pp
 The two-character indicator
 .Sq BI
 requests a font that is both bold and italic.
 It may not be portable to old roff implementations.
 .Pp
 Examples:
 .Bl -tag -width Ds -offset indent -compact
 .It Li \efBbold\efR
 Write in \fBbold\fP, then switch to regular font mode.
 .It Li \efIitalic\efP
 Write in \fIitalic\fP, then return to previous font mode.
 .It Li \ef(BIbold italic\efP
 Write in \f(BIbold italic\fP, then return to previous font mode.
 .El
 .Pp
 Text decoration is
 .Em not
 recommended for
 .Xr mdoc 7 ,
 which encourages semantic annotation.
 .Ss Predefined Strings
 Predefined strings, like
 .Sx Special Characters ,
 mark special output glyphs.
 Predefined strings are escaped with the slash-asterisk,
 .Sq \e* :
 single-character
 .Sq \e*X ,
 two-character
 .Sq \e*(XX ,
 and N-character
-.Sq \e*[N] .
+.Sq \e* Ns Bq N .
 .Pp
 Examples:
 .Bl -tag -width Ds -offset indent -compact
 .It Li \e*(Am
 Two-letter ampersand predefined string.
 .It Li \e*q
 One-letter double-quote predefined string.
 .El
 .Pp
 Predefined strings are not recommended for use,
 as they differ across implementations.
 Those supported by
 .Xr mandoc 1
 are listed in
 .Xr mandoc_char 7 .
 Manuals using these predefined strings are almost certainly not portable.
 .Ss Whitespace
 Whitespace consists of the space character.
 In text lines, whitespace is preserved within a line.
 In request and macro lines, whitespace delimits arguments and is discarded.
 .Pp
 Unescaped trailing spaces are stripped from text line input unless in a
 literal context.
 In general, trailing whitespace on any input line is discouraged for
 reasons of portability.
 In the rare case that a blank character is needed at the end of an
 input line, it may be forced by
 .Sq \e\ \e& .
 .Pp
 Literal space characters can be produced in the output
 using escape sequences.
 In macro lines, they can also be included in arguments using quotation; see
 .Sx MACRO SYNTAX
 for details.
 .Pp
 Blank text lines, which may include whitespace, are only permitted
 within literal contexts.
 If the first character of a text line is a space, that line is printed
 with a leading newline.
 .Ss Scaling Widths
 Many requests and macros support scaled widths for their arguments.
 The syntax for a scaled width is
 .Sq Li [+-]?[0-9]*.[0-9]*[:unit:] ,
 where a decimal must be preceded or followed by at least one digit.
 Negative numbers, while accepted, are truncated to zero.
 .Pp
 The following scaling units are accepted:
 .Pp
 .Bl -tag -width Ds -offset indent -compact
 .It c
 centimetre
 .It i
 inch
 .It P
 pica (~1/6 inch)
 .It p
 point (~1/72 inch)
 .It f
 scale
 .Sq u
 by 65536
 .It v
 default vertical span
 .It m
 width of rendered
 .Sq m
 .Pq em
 character
 .It n
 width of rendered
 .Sq n
 .Pq en
 character
 .It u
 default horizontal span for the terminal
 .It M
 mini-em (~1/100 em)
 .El
 .Pp
 Using anything other than
 .Sq m ,
 .Sq n ,
 or
 .Sq v
 is necessarily non-portable across output media.
 See
 .Sx COMPATIBILITY .
 .Pp
 If a scaling unit is not provided, the numerical value is interpreted
 under the default rules of
 .Sq v
 for vertical spaces and
 .Sq u
 for horizontal ones.
 .Pp
 Examples:
 .Bl -tag -width ".Bl -tag -width 2i" -offset indent -compact
 .It Li \&.Bl -tag -width 2i
 two-inch tagged list indentation in
 .Xr mdoc 7
 .It Li \&.HP 2i
 two-inch tagged list indentation in
 .Xr man 7
 .It Li \&.sp 2v
 two vertical spaces
 .El
 .Ss Sentence Spacing
 Each sentence should terminate at the end of an input line.
 By doing this, a formatter will be able to apply the proper amount of
 spacing after the end of sentence (unescaped) period, exclamation mark,
 or question mark followed by zero or more non-sentence closing
 delimiters
 .Po
 .Sq \&) ,
 .Sq \&] ,
 .Sq \&' ,
 .Sq \&"
 .Pc .
 .Pp
 The proper spacing is also intelligently preserved if a sentence ends at
 the boundary of a macro line.
 .Pp
 Examples:
 .Bd -literal -offset indent -compact
 Do not end sentences mid-line like this.  Instead,
 end a sentence like this.
 A macro would end like this:
 \&.Xr mandoc 1 \&.
 .Ed
 .Sh REQUEST SYNTAX
 A request or macro line consists of:
 .Pp
 .Bl -enum -compact
 .It
 the control character
 .Sq \&.
 or
 .Sq \(aq
 at the beginning of the line,
 .It
 optionally an arbitrary amount of whitespace,
 .It
 the name of the request or the macro, which is one word of arbitrary
 length, terminated by whitespace,
 .It
 and zero or more arguments delimited by whitespace.
 .El
 .Pp
 Thus, the following request lines are all equivalent:
 .Bd -literal -offset indent
 \&.ig end
 \&.ig    end
 \&.   ig end
 .Ed
 .Sh MACRO SYNTAX
 Macros are provided by the
 .Xr mdoc 7
 and
 .Xr man 7
 languages and can be defined by the
 .Sx \&de
 request.
 When called, they follow the same syntax as requests, except that
 macro arguments may optionally be quoted by enclosing them
 in double quote characters
 .Pq Sq \(dq .
 Quoted text, even if it contains whitespace or would cause
 a macro invocation when unquoted, is always considered literal text.
 Inside quoted text, pairs of double quote characters
 .Pq Sq Qq
 resolve to single double quote characters.
 .Pp
 To be recognised as the beginning of a quoted argument, the opening
 quote character must be preceded by a space character.
 A quoted argument extends to the next double quote character that is not
 part of a pair, or to the end of the input line, whichever comes earlier.
 Leaving out the terminating double quote character at the end of the line
 is discouraged.
 For clarity, if more arguments follow on the same input line,
 it is recommended to follow the terminating double quote character
 by a space character; in case the next character after the terminating
 double quote character is anything else, it is regarded as the beginning
 of the next, unquoted argument.
 .Pp
 Both in quoted and unquoted arguments, pairs of backslashes
 .Pq Sq \e\e
 resolve to single backslashes.
 In unquoted arguments, space characters can alternatively be included
 by preceding them with a backslash
 .Pq Sq \e\~ ,
 but quoting is usually better for clarity.
 .Pp
 Examples:
 .Bl -tag -width Ds -offset indent -compact
 .It Li .Fn strlen \(dqconst char *s\(dq
 Group arguments
 .Qq const char *s
 into one function argument.
 If unspecified,
 .Qq const ,
 .Qq char ,
 and
 .Qq *s
 would be considered separate arguments.
 .It Li .Op \(dqFl a\(dq
 Consider
 .Qq \&Fl a
 as literal text instead of a flag macro.
 .El
 .Sh REQUEST REFERENCE
 The
 .Xr mandoc 1
 .Nm
 parser recognises the following requests.
 For requests marked as "ignored" or "unsupported", any arguments are
 ignored, and the number of arguments is not checked.
 .Bl -tag -width Ds
 .It Ic \&ab Op Ar message
 Abort processing.
 Currently unsupported.
 .It Ic \&ad Op Cm b | c | l | n | r
 Set line adjustment mode for subsequent text.
 Currently ignored.
 .It Ic \&af Ar registername format
 Assign an output format to a number register.
 Currently ignored.
 .It Ic \&aln Ar newname oldname
 Create an alias for a number register.
 Currently unsupported.
 .It Ic \&als Ar newname oldname
 Create an alias for a request, string, macro, or diversion.
-Currently unsupported.
 .It Ic \&am Ar macroname Op Ar endmacro
 Append to a macro definition.
 The syntax of this request is the same as that of
 .Ic \&de .
 .It Ic \&am1 Ar macroname Op Ar endmacro
 Append to a macro definition, switching roff compatibility mode off
 during macro execution (groff extension).
 The syntax of this request is the same as that of
 .Ic \&de1 .
 Since
 .Xr mandoc 1
 does not implement
 .Nm
 compatibility mode at all, it handles this request as an alias for
 .Ic \&am .
 .It Ic \&ami Ar macrostring Op Ar endstring
 Append to a macro definition, specifying the macro name indirectly
 (groff extension).
 The syntax of this request is the same as that of
 .Ic \&dei .
 .It Ic \&ami1 Ar macrostring Op Ar endstring
 Append to a macro definition, specifying the macro name indirectly
 and switching roff compatibility mode off during macro execution
 (groff extension).
 The syntax of this request is the same as that of
 .Ic \&dei1 .
 Since
 .Xr mandoc 1
 does not implement
 .Nm
 compatibility mode at all, it handles this request as an alias for
 .Ic \&ami .
 .It Ic \&as Ar stringname Op Ar string
 Append to a user-defined string.
 The syntax of this request is the same as that of
 .Sx \&ds .
 If a user-defined string with the specified name does not yet exist,
 it is set to the empty string before appending.
 .It Ic \&as1 Ar stringname Op Ar string
 Append to a user-defined string, switching roff compatibility mode off
 during macro execution (groff extension).
 The syntax of this request is the same as that of
 .Ic \&ds1 .
 Since
 .Xr mandoc 1
 does not implement
 .Nm
 compatibility mode at all, it handles this request as an alias for
 .Ic \&as .
 .It Ic \&asciify Ar divname
 Fully unformat a diversion.
 Currently unsupported.
 .It Ic \&backtrace
 Print a backtrace of the input stack.
 This is a groff extension and currently ignored.
 .It Ic \&bd Ar font Oo Ar curfont Oc Op Ar offset
 Artificially embolden by repeated printing with small shifts.
 Currently ignored.
 .It Ic \&bleedat Ar left top width height
 Set the BleedBox page parameter for PDF generation.
 This is a Heirloom extension and currently ignored.
 .It Ic \&blm Ar macroname
 Set a blank line trap.
 Currently unsupported.
 .It Ic \&box Ar divname
 Begin a diversion without including a partially filled line.
 Currently unsupported.
 .It Ic \&boxa Ar divname
 Add to a diversion without including a partially filled line.
 Currently unsupported.
 .It Ic \&bp Oo Cm + Ns | Ns Cm - Oc Ns Ar pagenumber
 Begin a new page.
 Currently ignored.
 .It Ic \&BP Ar source height width position offset flags label
 Define a frame and place a picture in it.
 This is a Heirloom extension and currently unsupported.
 .It Ic \&br
 Break the output line.
 .It Ic \&break
 Break out of a
 .Ic \&while
 loop.
 Currently unsupported.
 .It Ic \&breakchar Ar char ...
 Optional line break characters.
 This is a Heirloom extension and currently ignored.
 .It Ic \&brnl Ar N
 Break output line after the next
 .Ar N
 input lines.
 This is a Heirloom extension and currently ignored.
 .It Ic \&brp
 Break and spread output line.
 Currently, this is implemented as an alias for
 .Ic \&br .
 .It Ic \&brpnl Ar N
 Break and spread output line after the next
 .Ar N
 input lines.
 This is a Heirloom extension and currently ignored.
 .It Ic \&c2 Op Ar char
 Change the no-break control character.
 Currently unsupported.
 .It Ic \&cc Op Ar char
 Change the control character.
 If
 .Ar char
 is not specified, the control character is reset to
 .Sq \&. .
 Trailing characters are ignored.
 .It Ic \&ce Op Ar N
 Center the next
 .Ar N
 input lines without filling.
 .Ar N
 defaults to 1.
 An argument of 0 or less ends centering.
 Currently, high level macros abort centering.
 .It Ic \&cf Ar filename
 Output the contents of a file.
 Ignored because insecure.
 .It Ic \&cflags Ar flags char ...
 Set character flags.
 This is a groff extension and currently ignored.
 .It Ic \&ch Ar macroname Op Ar dist
 Change a trap location.
 Currently ignored.
 .It Ic \&char Ar glyphname Op Ar string
 Define a new glyph.
 Currently unsupported.
 .It Ic \&chop Ar stringname
 Remove the last character from a macro, string, or diversion.
 Currently unsupported.
 .It Ic \&class Ar classname char ...
 Define a character class.
 This is a groff extension and currently ignored.
 .It Ic \&close Ar streamname
 Close an open file.
 Ignored because insecure.
 .It Ic \&CL Ar color text
 Print text in color.
 This is a Heirloom extension and currently unsupported.
 .It Ic \&color Op Cm 1 | 0
 Activate or deactivate colors.
 This is a groff extension and currently ignored.
 .It Ic \&composite Ar from to
 Define a name component for composite glyph names.
 This is a groff extension and currently unsupported.
 .It Ic \&continue
 Immediately start the next iteration of a
 .Ic \&while
 loop.
 Currently unsupported.
 .It Ic \&cp Op Cm 1 | 0
 Switch
 .Nm
 compatibility mode on or off.
 Currently ignored.
 .It Ic \&cropat Ar left top width height
 Set the CropBox page parameter for PDF generation.
 This is a Heirloom extension and currently ignored.
 .It Ic \&cs Ar font Op Ar width Op Ar emsize
 Constant character spacing mode.
 Currently ignored.
 .It Ic \&cu Op Ar N
 Underline next
 .Ar N
 input lines including whitespace.
 Currently ignored.
 .It Ic \&da Ar divname
 Append to a diversion.
 Currently unsupported.
 .It Ic \&dch Ar macroname Op Ar dist
 Change a trap location in the current diversion.
 This is a Heirloom extension and currently unsupported.
 .It Ic \&de Ar macroname Op Ar endmacro
 Define a
 .Nm
 macro.
 Its syntax can be either
 .Bd -literal -offset indent
 .Pf . Ic \&de Ar macroname
 .Ar definition
 \&..
 .Ed
 .Pp
 or
 .Bd -literal -offset indent
 .Pf . Ic \&de Ar macroname Ar endmacro
 .Ar definition
 .Pf . Ar endmacro
 .Ed
 .Pp
 Both forms define or redefine the macro
 .Ar macroname
 to represent the
 .Ar definition ,
 which may consist of one or more input lines, including the newline
 characters terminating each line, optionally containing calls to
 .Nm
 requests,
 .Nm
 macros or high-level macros like
 .Xr man 7
 or
 .Xr mdoc 7
 macros, whichever applies to the document in question.
 .Pp
 Specifying a custom
 .Ar endmacro
 macro works in the same way as for
 .Ic \&ig ;
 namely, the call to
 .Sq Pf . Ar endmacro
 first ends the
 .Ar definition ,
 and after that, it is also evaluated as a
 .Nm
 request or
 .Nm
 macro, but not as a high-level macro.
 .Pp
 The macro can be invoked later using the syntax
 .Pp
 .D1 Pf . Ar macroname Op Ar argument Op Ar argument ...
 .Pp
 Regarding argument parsing, see
 .Sx MACRO SYNTAX
 above.
 .Pp
 The line invoking the macro will be replaced
 in the input stream by the
 .Ar definition ,
 replacing all occurrences of
 .No \e\e$ Ns Ar N ,
 where
 .Ar N
 is a digit, by the
 .Ar N Ns th Ar argument .
 For example,
 .Bd -literal -offset indent
 \&.de ZN
 \efI\e^\e\e$1\e^\efP\e\e$2
 \&..
 \&.ZN XtFree .
 .Ed
 .Pp
 produces
 .Pp
 .D1 \efI\e^XtFree\e^\efP.
 .Pp
 in the input stream, and thus in the output: \fI\^XtFree\^\fP.
 Each occurrence of \e\e$* is replaced with all the arguments,
 joined together with single blank characters.
 .Pp
 Since macros and user-defined strings share a common string table,
 defining a macro
 .Ar macroname
 clobbers the user-defined string
 .Ar macroname ,
 and the
 .Ar definition
 can also be printed using the
 .Sq \e*
 string interpolation syntax described below
 .Ic ds ,
 but this is rarely useful because every macro definition contains at least
 one explicit newline character.
 .Pp
 In order to prevent endless recursion, both groff and
 .Xr mandoc 1
 limit the stack depth for expanding macros and strings
 to a large, but finite number, and
 .Xr mandoc 1
 also limits the length of the expanded input line.
 Do not rely on the exact values of these limits.
 .It Ic \&de1 Ar macroname Op Ar endmacro
 Define a
 .Nm
 macro that will be executed with
 .Nm
 compatibility mode switched off during macro execution.
 This is a groff extension.
 Since
 .Xr mandoc 1
 does not implement
 .Nm
 compatibility mode at all, it handles this request as an alias for
 .Ic \&de .
 .It Ic \&defcolor Ar newname scheme component ...
 Define a color name.
 This is a groff extension and currently ignored.
 .It Ic \&dei Ar macrostring Op Ar endstring
 Define a
 .Nm
 macro, specifying the macro name indirectly (groff extension).
 The syntax of this request is the same as that of
 .Ic \&de .
 The effect is the same as:
 .Pp
 .D1 Pf . Cm \&de No \e* Ns Bo Ar macrostring Bc Op \e* Ns Bq Ar endstring
 .It Ic \&dei1 Ar macrostring Op Ar endstring
 Define a
 .Nm
 macro that will be executed with
 .Nm
 compatibility mode switched off during macro execution,
 specifying the macro name indirectly (groff extension).
 Since
 .Xr mandoc 1
 does not implement
 .Nm
 compatibility mode at all, it handles this request as an alias for
 .Ic \&dei .
 .It Ic \&device Ar string ...
 .It Ic \&devicem Ar stringname
 These two requests only make sense with the groff-specific intermediate
 output format and are unsupported.
 .It Ic \&di Ar divname
 Begin a diversion.
 Currently unsupported.
 .It Ic \&do Ar command Op Ar argument ...
 Execute
 .Nm
 request or macro line with compatibility mode disabled.
 Currently unsupported.
 .It Ic \&ds Ar stringname Op Oo \(dq Oc Ns Ar string
 Define a user-defined string.
 The
 .Ar stringname
 and
 .Ar string
 arguments are space-separated.
 If the
 .Ar string
 begins with a double-quote character, that character will not be part
 of the string.
 All remaining characters on the input line form the
 .Ar string ,
 including whitespace and double-quote characters, even trailing ones.
 .Pp
 The
 .Ar string
 can be interpolated into subsequent text by using
 .No \e* Ns Bq Ar stringname
 for a
 .Ar stringname
 of arbitrary length, or \e*(NN or \e*N if the length of
 .Ar stringname
 is two or one characters, respectively.
 Interpolation can be prevented by escaping the leading backslash;
 that is, an asterisk preceded by an even number of backslashes
 does not trigger string interpolation.
 .Pp
 Since user-defined strings and macros share a common string table,
 defining a string
 .Ar stringname
 clobbers the macro
 .Ar stringname ,
 and the
 .Ar stringname
 used for defining a string can also be invoked as a macro,
 in which case the following input line will be appended to the
 .Ar string ,
 forming a new input line passed to the
 .Nm
 parser.
 For example,
 .Bd -literal -offset indent
 \&.ds badidea .S
 \&.badidea
 H SYNOPSIS
 .Ed
 .Pp
 invokes the
 .Ic SH
 macro when used in a
 .Xr man 7
 document.
 Such abuse is of course strongly discouraged.
 .It Ic \&ds1 Ar stringname Op Oo \(dq Oc Ns Ar string
 Define a user-defined string that will be expanded with
 .Nm
 compatibility mode switched off during string expansion.
 This is a groff extension.
 Since
 .Xr mandoc 1
 does not implement
 .Nm
 compatibility mode at all, it handles this request as an alias for
 .Ic \&ds .
 .It Ic \&dwh Ar dist macroname
 Set a location trap in the current diversion.
 This is a Heirloom extension and currently unsupported.
 .It Ic \&dt Op Ar dist macroname
 Set a trap within a diversion.
 Currently unsupported.
 .It Ic \&ec Op Ar char
 Enable the escape mechanism and change the escape character.
 The
 .Ar char
 argument defaults to the backslash
 .Pq Sq \e .
 .It Ic \&ecr
 Restore the escape character.
 Currently unsupported.
 .It Ic \&ecs
 Save the escape character.
 Currently unsupported.
 .It Ic \&el Ar body
 The
 .Dq else
 half of an if/else conditional.
 Pops a result off the stack of conditional evaluations pushed by
 .Ic \&ie
 and uses it as its conditional.
 If no stack entries are present (e.g., due to no prior
 .Ic \&ie
 calls)
 then false is assumed.
 The syntax of this request is similar to
 .Ic \&if
 except that the conditional is missing.
 .It Ic \&em Ar macroname
 Set a trap at the end of input.
 Currently unsupported.
 .It Ic \&EN
 End an equation block.
 See
 .Ic \&EQ .
 .It Ic \&eo
 Disable the escape mechanism completely.
 .It Ic \&EP
 End a picture started by
 .Ic \&BP .
 This is a Heirloom extension and currently unsupported.
 .It Ic \&EQ
 Begin an equation block.
 See
 .Xr eqn 7
 for a description of the equation language.
 .It Ic \&errprint Ar message
 Print a string like an error message.
 This is a Heirloom extension and currently ignored.
 .It Ic \&ev Op Ar envname
 Switch to another environment.
 Currently unsupported.
 .It Ic \&evc Op Ar envname
 Copy an environment into the current environment.
 Currently unsupported.
 .It Ic \&ex
 Abort processing and exit.
 Currently unsupported.
 .It Ic \&fallback Ar curfont font ...
 Select the fallback sequence for a font.
 This is a Heirloom extension and currently ignored.
 .It Ic \&fam Op Ar familyname
 Change the font family.
 This is a groff extension and currently ignored.
 .It Ic \&fc Op Ar delimchar Op Ar padchar
 Define a delimiting and a padding character for fields.
 Currently unsupported.
 .It Ic \&fchar Ar glyphname Op Ar string
 Define a fallback glyph.
 Currently unsupported.
 .It Ic \&fcolor Ar colorname
 Set the fill color for \eD objects.
 This is a groff extension and currently ignored.
 .It Ic \&fdeferlig Ar font string ...
 Defer ligature building.
 This is a Heirloom extension and currently ignored.
 .It Ic \&feature Cm + Ns | Ns Cm - Ns Ar name
 Enable or disable an OpenType feature.
 This is a Heirloom extension and currently ignored.
 .It Ic \&fi
 Switch to fill mode.
 See
 .Xr man 7 .
 Ignored in
 .Xr mdoc 7 .
 .It Ic \&fkern Ar font minkern
 Control the use of kerning tables for a font.
 This is a Heirloom extension and currently ignored.
 .It Ic \&fl
 Flush output.
 Currently ignored.
 .It Ic \&flig Ar font string char ...
 Define ligatures.
 This is a Heirloom extension and currently ignored.
 .It Ic \&fp Ar position font Op Ar filename
 Assign font position.
 Currently ignored.
 .It Ic \&fps Ar mapname ...
 Mount a font with a special character map.
 This is a Heirloom extension and currently ignored.
 .It Ic \&fschar Ar font glyphname Op Ar string
 Define a font-specific fallback glyph.
 This is a groff extension and currently unsupported.
 .It Ic \&fspacewidth Ar font Op Ar afmunits
 Set a font-specific width for the space character.
 This is a Heirloom extension and currently ignored.
 .It Ic \&fspecial Ar curfont Op Ar font ...
 Conditionally define a special font.
 This is a groff extension and currently ignored.
 .It Ic \&ft Op Ar font
 Change the font.
 The following
 .Ar font
 arguments are supported:
 .Bl -tag -width 4n -offset indent
 .It Cm B , BI , 3 , 4
 switches to
 .Sy bold
 font
 .It Cm I , 2
 switches to
 .Em underlined
 font
 .It Cm R , CW , 1
 switches to normal font
 .It Cm P No "or no argument"
 switches back to the previous font
 .El
 .Pp
 This request takes effect only locally and may be overridden
 by macros and escape sequences.
 .It Ic \&ftr Ar newname Op Ar oldname
 Translate font name.
 This is a groff extension and currently ignored.
 .It Ic \&fzoom Ar font Op Ar permille
 Zoom font size.
 Currently ignored.
 .It Ic \&gcolor Op Ar colorname
 Set glyph color.
 This is a groff extension and currently ignored.
 .It Ic \&hc Op Ar char
 Set the hyphenation character.
 Currently ignored.
 .It Ic \&hcode Ar char code ...
 Set hyphenation codes of characters.
 Currently ignored.
 .It Ic \&hidechar Ar font char ...
 Hide characters in a font.
 This is a Heirloom extension and currently ignored.
 .It Ic \&hla Ar language
 Set hyphenation language.
 This is a groff extension and currently ignored.
 .It Ic \&hlm Op Ar number
 Set maximum number of consecutive hyphenated lines.
 Currently ignored.
 .It Ic \&hpf Ar filename
 Load hyphenation pattern file.
 This is a groff extension and currently ignored.
 .It Ic \&hpfa Ar filename
 Load hyphenation pattern file, appending to the current patterns.
 This is a groff extension and currently ignored.
 .It Ic \&hpfcode Ar code code ...
 Define mapping values for character codes in hyphenation patterns.
 This is a groff extension and currently ignored.
 .It Ic \&hw Ar word ...
 Specify hyphenation points in words.
 Currently ignored.
 .It Ic \&hy Op Ar mode
 Set automatic hyphenation mode.
 Currently ignored.
 .It Ic \&hylang Ar language
 Set hyphenation language.
 This is a Heirloom extension and currently ignored.
 .It Ic \&hylen Ar nchar
 Minimum word length for hyphenation.
 This is a Heirloom extension and currently ignored.
 .It Ic \&hym Op Ar length
 Set hyphenation margin.
 This is a groff extension and currently ignored.
 .It Ic \&hypp Ar penalty ...
 Define hyphenation penalties.
 This is a Heirloom extension and currently ignored.
 .It Ic \&hys Op Ar length
 Set hyphenation space.
 This is a groff extension and currently ignored.
 .It Ic \&ie Ar condition body
 The
 .Dq if
 half of an if/else conditional.
 The result of the conditional is pushed into a stack used by subsequent
 invocations of
 .Ic \&el ,
 which may be separated by any intervening input (or not exist at all).
 Its syntax is equivalent to
 .Ic \&if .
 .It Ic \&if Ar condition body
 Begin a conditional.
 This request can also be written as follows:
 .Bd -unfilled -offset indent
 .Pf . Ic \&if Ar condition No \e{ Ns Ar body
 .Ar body ... Ns \e}
 .Ed
 .Bd -unfilled -offset indent
 .Pf . Ic \&if Ar condition No \e{\e
 .Ar body ...
 .Pf . No \e}
 .Ed
 .Pp
 The
 .Ar condition
 is a boolean expression.
 Currently,
 .Xr mandoc 1
 supports the following subset of roff conditionals:
 .Bl -bullet
 .It
 If
 .Sq \&!
 is prefixed to
 .Ar condition ,
 it is logically inverted.
 .It
 If the first character of
 .Ar condition
 is
 .Sq n
 .Pq nroff mode
 or
 .Sq o
 .Pq odd page ,
 it evaluates to true.
 .It
 If the first character of
 .Ar condition
 is
 .Sq c
 .Pq character available ,
-.Sq d
-.Pq string defined ,
 .Sq e
 .Pq even page ,
 .Sq t
 .Pq troff mode ,
 or
 .Sq v
 .Pq vroff mode ,
 it evaluates to false.
 .It
 If the first character of
 .Ar condition
 is
+.Sq d ,
+it evaluates to true if the rest of
+.Ar condition
+is the name of an existing user defined macro or string;
+otherwise, it evaluates to false.
+.It
+If the first character of
+.Ar condition
+is
 .Sq r ,
 it evaluates to true if the rest of
 .Ar condition
 is the name of an existing number register;
 otherwise, it evaluates to false.
 .It
 If the
 .Ar condition
 starts with a parenthesis or with an optionally signed
 integer number, it is evaluated according to the rules of
 .Sx Numerical expressions
 explained below.
 It evaluates to true if the result is positive,
 or to false if the result is zero or negative.
 .It
 Otherwise, the first character of
 .Ar condition
 is regarded as a delimiter and it evaluates to true if the string
 extending from its first to its second occurrence is equal to the
 string extending from its second to its third occurrence.
 .It
 If
 .Ar condition
 cannot be parsed, it evaluates to false.
 .El
 .Pp
 If a conditional is false, its children are not processed, but are
 syntactically interpreted to preserve the integrity of the input
 document.
 Thus,
 .Pp
 .D1 \&.if t .ig
 .Pp
 will discard the
 .Sq \&.ig ,
 which may lead to interesting results, but
 .Pp
 .D1 \&.if t .if t \e{\e
 .Pp
 will continue to syntactically interpret to the block close of the final
 conditional.
 Sub-conditionals, in this case, obviously inherit the truth value of
 the parent.
 .Pp
 If the
 .Ar body
 section is begun by an escaped brace
 .Sq \e{ ,
 scope continues until the end of the input line containing the
 matching closing-brace escape sequence
 .Sq \e} .
 If the
 .Ar body
 is not enclosed in braces, scope continues until the end of the line.
 If the
 .Ar condition
 is followed by a
 .Ar body
 on the same line, whether after a brace or not, then requests and macros
 .Em must
 begin with a control character.
 It is generally more intuitive, in this case, to write
 .Bd -unfilled -offset indent
 .Pf . Ic \&if Ar condition No \e{\e
 .Pf . Ar request
 .Pf . No \e}
 .Ed
 .Pp
 than having the request or macro follow as
 .Pp
 .D1 Pf . Ic \&if Ar condition Pf \e{. Ar request
 .Pp
 The scope of a conditional is always parsed, but only executed if the
 conditional evaluates to true.
 .Pp
 Note that the
 .Sq \e}
 is converted into a zero-width escape sequence if not passed as a
 standalone macro
 .Sq \&.\e} .
 For example,
 .Pp
 .D1 \&.Fl a \e} b
 .Pp
 will result in
 .Sq \e}
 being considered an argument of the
 .Sq \&Fl
 macro.
 .It Ic \&ig Op Ar endmacro
 Ignore input.
 Its syntax can be either
 .Bd -literal -offset indent
 .Pf . Cm \&ig
 .Ar ignored text
 \&..
 .Ed
 .Pp
 or
 .Bd -literal -offset indent
 .Pf . Cm \&ig Ar endmacro
 .Ar ignored text
 .Pf . Ar endmacro
 .Ed
 .Pp
 In the first case, input is ignored until a
 .Sq \&..
 request is encountered on its own line.
 In the second case, input is ignored until the specified
 .Sq Pf . Ar endmacro
 is encountered.
 Do not use the escape character
 .Sq \e
 anywhere in the definition of
 .Ar endmacro ;
 it would cause very strange behaviour.
 .Pp
 When the
 .Ar endmacro
 is a roff request or a roff macro, like in
 .Pp
 .D1 \&.ig if
 .Pp
 the subsequent invocation of
 .Ic \&if
 will first terminate the
 .Ar ignored text ,
 then be invoked as usual.
 Otherwise, it only terminates the
 .Ar ignored text ,
 and arguments following it or the
 .Sq \&..
 request are discarded.
 .It Ic \&in Op Oo Cm + Ns | Ns Cm - Oc Ns Ar width
 Change indentation.
 See
 .Xr man 7 .
 Ignored in
 .Xr mdoc 7 .
 .It Ic \&index Ar register stringname substring
 Find a substring in a string.
 This is a Heirloom extension and currently unsupported.
 .It Ic \&it Ar expression macro
 Set an input line trap.
 The named
 .Ar macro
 will be invoked after processing the number of input text lines
 specified by the numerical
 .Ar expression .
 While evaluating the
 .Ar expression ,
 the unit suffixes described below
 .Sx Scaling Widths
 are ignored.
 .It Ic \&it Ar expression macro
 Set an input line trap, not counting lines ending with \ec.
 Currently unsupported.
 .It Ic \&IX Ar class keystring
 To support the generation of a table of contents,
 .Xr pod2man 1
 emits this user-defined macro, usually without defining it.
 To avoid reporting large numbers of spurious errors,
 .Xr mandoc 1
 ignores it.
 .It Ic \&kern Op Cm 1 | 0
 Switch kerning on or off.
 Currently ignored.
 .It Ic \&kernafter Ar font char ... afmunits ...
 Increase kerning after some characters.
 This is a Heirloom extension and currently ignored.
 .It Ic \&kernbefore Ar font char ... afmunits ...
 Increase kerning before some characters.
 This is a Heirloom extension and currently ignored.
 .It Ic \&kernpair Ar font char ... font char ... afmunits
 Add a kerning pair to the kerning table.
 This is a Heirloom extension and currently ignored.
 .It Ic \&lc Op Ar glyph
 Define a leader repetition character.
 Currently unsupported.
 .It Ic \&lc_ctype Ar localename
 Set the
 .Dv LC_CTYPE
 locale.
 This is a Heirloom extension and currently unsupported.
 .It Ic \&lds Ar macroname string
 Define a local string.
 This is a Heirloom extension and currently unsupported.
 .It Ic \&length Ar register string
 Count the number of input characters in a string.
 Currently unsupported.
 .It Ic \&letadj Ar lspmin lshmin letss lspmax lshmax
 Dynamic letter spacing and reshaping.
 This is a Heirloom extension and currently ignored.
 .It Ic \&lf Ar lineno Op Ar filename
 Change the line number for error messages.
 Ignored because insecure.
 .It Ic \&lg Op Cm 1 | 0
 Switch the ligature mechanism on or off.
 Currently ignored.
 .It Ic \&lhang Ar font char ... afmunits
 Hang characters at left margin.
 This is a Heirloom extension and currently ignored.
 .It Ic \&linetabs Op Cm 1 | 0
 Enable or disable line-tabs mode.
 This is a groff extension and currently unsupported.
 .It Ic \&ll Op Oo Cm + Ns | Ns Cm - Oc Ns Ar width
 Change the output line length.
 If the
 .Ar width
 argument is omitted, the line length is reset to its previous value.
 The default setting for terminal output is 78n.
 If a sign is given, the line length is added to or subtracted from;
 otherwise, it is set to the provided value.
 Using this request in new manuals is discouraged for several reasons,
 among others because it overrides the
 .Xr mandoc 1
 .Fl O Cm width
 command line option.
 .It Ic \&lnr Ar register Oo Cm + Ns | Ns Cm - Oc Ns Ar value Op Ar increment
 Set local number register.
 This is a Heirloom extension and currently unsupported.
 .It Ic \&lnrf Ar register Oo Cm + Ns | Ns Cm - Oc Ns Ar value Op Ar increment
 Set local floating-point register.
 This is a Heirloom extension and currently unsupported.
 .It Ic \&lpfx Ar string
 Set a line prefix.
 This is a Heirloom extension and currently unsupported.
 .It Ic \&ls Op Ar factor
 Set line spacing.
 It takes one integer argument specifying the vertical distance of
 subsequent output text lines measured in v units.
 Currently ignored.
 .It Ic \&lsm Ar macroname
 Set a leading spaces trap.
 This is a groff extension and currently unsupported.
 .It Ic \< Op Oo Cm + Ns | Ns Cm - Oc Ns Ar width
 Set title line length.
 Currently ignored.
 .It Ic \&mc Ar glyph Op Ar dist
 Print margin character in the right margin.
 The
 .Ar dist
 is currently ignored; instead, 1n is used.
 .It Ic \&mediasize Ar media
 Set the device media size.
 This is a Heirloom extension and currently ignored.
 .It Ic \&minss Ar width
 Set minimum word space.
 This is a Heirloom extension and currently ignored.
 .It Ic \&mk Op Ar register
 Mark vertical position.
 Currently ignored.
 .It Ic \&mso Ar filename
 Load a macro file using the search path.
 Ignored because insecure.
 .It Ic \&na
 Disable adjusting without changing the adjustment mode.
 Currently ignored.
 .It Ic \&ne Op Ar height
 Declare the need for the specified minimum vertical space
 before the next trap or the bottom of the page.
 Currently ignored.
 .It Ic \&nf
 Switch to no-fill mode.
 See
 .Xr man 7 .
 Ignored by
 .Xr mdoc 7 .
 .It Ic \&nh
 Turn off automatic hyphenation mode.
 Currently ignored.
 .It Ic \&nhychar Ar char ...
 Define hyphenation-inhibiting characters.
 This is a Heirloom extension and currently ignored.
 .It Ic \&nm Op Ar start Op Ar inc Op Ar space Op Ar indent
 Print line numbers.
 Currently unsupported.
 .It Ic \&nn Op Ar number
 Temporarily turn off line numbering.
 Currently unsupported.
 .It Ic \&nop Ar body
 Execute the rest of the input line as a request or macro line.
 Currently unsupported.
 .It Ic \&nr Ar register Oo Cm + Ns | Ns Cm - Oc Ns Ar expression
 Define or change a register.
 A register is an arbitrary string value that defines some sort of state,
 which influences parsing and/or formatting.
 For the syntax of
 .Ar expression ,
 see
 .Sx Numerical expressions
 below.
 If it is prefixed by a sign, the register will be
 incremented or decremented instead of assigned to.
 .Pp
 The following
 .Ar register
 is handled specially:
 .Bl -tag -width Ds
 .It Cm nS
 If set to a positive integer value, certain
 .Xr mdoc 7
 macros will behave in the same way as in the
 .Em SYNOPSIS
 section.
 If set to 0, these macros will behave in the same way as outside the
 .Em SYNOPSIS
 section, even when called within the
 .Em SYNOPSIS
 section itself.
 Note that starting a new
 .Xr mdoc 7
 section with the
 .Ic \&Sh
 macro will reset this register.
 .El
 .It Xo
 .Ic \&nrf Ar register Oo Cm + Ns | Ns Cm - Oc Ns Ar expression
 .Op Ar increment
 .Xc
 Define or change a floating-point register.
 This is a Heirloom extension and currently unsupported.
 .It Ic \&nroff
 Force nroff mode.
 This is a groff extension and currently ignored.
 .It Ic \&ns
 Turn on no-space mode.
 Currently ignored.
 .It Ic \&nx Op Ar filename
 Abort processing of the current input file and process another one.
 Ignored because insecure.
 .It Ic \&open Ar stream file
 Open a file for writing.
 Ignored because insecure.
 .It Ic \&opena Ar stream file
 Open a file for appending.
 Ignored because insecure.
 .It Ic \&os
 Output saved vertical space.
 Currently ignored.
 .It Ic \&output Ar string
 Output directly to intermediate output.
 Not supported.
 .It Ic \&padj Op Cm 1 | 0
 Globally control paragraph-at-once adjustment.
 This is a Heirloom extension and currently ignored.
 .It Ic \&papersize Ar media
 Set the paper size.
 This is a Heirloom extension and currently ignored.
 .It Ic \&pc Op Ar char
 Change the page number character.
 Currently ignored.
 .It Ic \&pev
 Print environments.
 This is a groff extension and currently ignored.
 .It Ic \&pi Ar command
 Pipe output to a shell command.
 Ignored because insecure.
 .It Ic \&PI
 Low-level request used by
 .Ic \&BP .
 This is a Heirloom extension and currently unsupported.
 .It Ic \&pl Op Oo Cm + Ns | Ns Cm - Oc Ns Ar height
 Change page length.
 Currently ignored.
 .It Ic \&pm
 Print names and sizes of macros, strings, and diversions
 to standard error output.
 Currently ignored.
 .It Ic \&pn Oo Cm + Ns | Ns Cm - Oc Ns Ar number
 Change the page number of the next page.
 Currently ignored.
 .It Ic \&pnr
 Print all number registers on standard error output.
 Currently ignored.
 .It Ic \&po Op Oo Cm + Ns | Ns Cm - Oc Ns Ar offset
-Set horizontal page offset.
-Currently ignored.
+Set a horizontal page offset.
+If no argument is specified, the page offset is reverted to its
+previous value.
+If a sign is specified, the new page offset is calculated relative
+to the current one; otherwise, it is absolute.
+The argument follows the syntax of
+.Sx Scaling Widths
+and the default scaling unit is
+.Cm m .
 .It Ic \&ps Op Oo Cm + Ns | Ns Cm - Oc Ns size
 Change point size.
 Currently ignored.
 .It Ic \&psbb Ar filename
 Retrieve the bounding box of a PostScript file.
 Currently unsupported.
 .It Ic \&pshape Ar indent length ...
 Set a special shape for the current paragraph.
 This is a Heirloom extension and currently unsupported.
 .It Ic \&pso Ar command
 Include output of a shell command.
 Ignored because insecure.
 .It Ic \&ptr
 Print the names and positions of all traps on standard error output.
 This is a groff extension and currently ignored.
 .It Ic \&pvs Op Oo Cm + Ns | Ns Cm - Oc Ns Ar height
 Change post-vertical spacing.
 This is a groff extension and currently ignored.
 .It Ic \&rchar Ar glyph ...
 Remove glyph definitions.
 Currently unsupported.
 .It Ic \&rd Op Ar prompt Op Ar agument ...
 Read from standard input.
 Currently ignored.
 .It Ic \&recursionlimit Ar maxrec maxtail
 Set the maximum stack depth for recursive macros.
 This is a Heirloom extension and currently ignored.
 .It Ic \&return Op Ar twice
 Exit a macro and return to the caller.
 Currently unsupported.
 .It Ic \&rfschar Ar font glyph ...
 Remove font-specific fallback glyph definitions.
 Currently unsupported.
 .It Ic \&rhang Ar font char ... afmunits
 Hang characters at right margin.
 This is a Heirloom extension and currently ignored.
 .It Ic \&rj Op Ar N
 Justify the next
 .Ar N
 input lines to the right margin without filling.
-Currently ignored.
+.Ar N
+defaults to 1.
+An argument of 0 or less ends right adjustment.
 .It Ic \&rm Ar macroname
 Remove a request, macro or string.
 .It Ic \&rn Ar oldname newname
 Rename a request, macro, diversion, or string.
 In
 .Xr mandoc 1 ,
 user-defined macros,
 .Xr mdoc 7
 and
 .Xr man 7
 macros, and user-defined strings can be renamed, but renaming of
 predefined strings and of
 .Nm
 requests is not supported, and diversions are not implemented at all.
 .It Ic \&rnn Ar oldname newname
 Rename a number register.
 Currently unsupported.
 .It Ic \&rr Ar register
 Remove a register.
 .It Ic \&rs
 End no-space mode.
 Currently ignored.
 .It Ic \&rt Op Ar dist
 Return to marked vertical position.
 Currently ignored.
 .It Ic \&schar Ar glyph Op Ar string
 Define global fallback glyph.
 This is a groff extension and currently unsupported.
 .It Ic \&sentchar Ar char ...
 Define sentence-ending characters.
 This is a Heirloom extension and currently ignored.
 .It Ic \&shc Op Ar glyph
 Change the soft hyphen character.
 Currently ignored.
 .It Ic \&shift Op Ar number
 Shift macro arguments.
 Currently unsupported.
 .It Ic \&sizes Ar size ...
 Define permissible point sizes.
 This is a groff extension and currently ignored.
 .It Ic \&so Ar filename
 Include a source file.
 The file is read and its contents processed as input in place of the
 .Ic \&so
 request line.
 To avoid inadvertent inclusion of unrelated files,
 .Xr mandoc 1
 only accepts relative paths not containing the strings
 .Qq ../
 and
 .Qq /.. .
 .Pp
 This request requires
 .Xr man 1
 to change to the right directory before calling
 .Xr mandoc 1 ,
 per convention to the root of the manual tree.
 Typical usage looks like:
 .Pp
 .Dl \&.so man3/Xcursor.3
 .Pp
 As the whole concept is rather fragile, the use of
 .Ic \&so
 is discouraged.
 Use
 .Xr ln 1
 instead.
 .It Ic \&sp Op Ar height
 Break the output line and emit vertical space.
 The argument follows the syntax of
 .Sx Scaling Widths
 and defaults to one blank line
 .Pq Li 1v .
 .It Ic \&spacewidth Op Cm 1 | 0
 Set the space width from the font metrics file.
 This is a Heirloom extension and currently ignored.
 .It Ic \&special Op Ar font ...
 Define a special font.
 This is a groff extension and currently ignored.
 .It Ic \&spreadwarn Op Ar width
 Warn about wide spacing between words.
 Currently ignored.
 .It Ic \&ss Ar wordspace Op Ar sentencespace
 Set space character size.
 Currently ignored.
 .It Ic \&sty Ar position style
 Associate style with a font position.
 This is a groff extension and currently ignored.
 .It Ic \&substring Ar stringname startpos Op Ar endpos
 Replace a user-defined string with a substring.
 Currently unsupported.
 .It Ic \&sv Op Ar height
 Save vertical space.
 Currently ignored.
 .It Ic \&sy Ar command
 Execute shell command.
 Ignored because insecure.
 .It Ic \&T&
 Re-start a table layout, retaining the options of the prior table
 invocation.
 See
 .Sx \&TS .
 .It Ic \&ta Op Ar width ... Op Cm T Ar width ...
 Set tab stops.
 Each
 .Ar width
 argument follows the syntax of
 .Sx Scaling Widths .
 If prefixed by a plus sign, it is relative to the previous tab stop.
 The arguments after the
 .Cm T
 marker are used repeatedly as often as needed; for each reuse,
 they are taken relative to the last previously established tab stop.
 When
 .Ic \&ta
 is called without arguments, all tab stops are cleared.
 .It Ic \&tc Op Ar glyph
 Change tab repetition character.
 Currently unsupported.
 .It Ic \&TE
 End a table context.
 See
 .Sx \&TS .
 .It Ic \&ti Oo Cm + Ns | Ns Cm - Oc Ns Ar width
 Break the output line and indent the next output line by
 .Ar width .
 If a sign is specified, the temporary indentation is calculated
 relative to the current indentation; otherwise, it is absolute.
 The argument follows the syntax of
 .Sx Scaling Widths
 and the default scaling unit is
 .Cm m .
 .It Ic \&tkf Ar font minps width1 maxps width2
 Enable track kerning for a font.
 Currently ignored.
 .It Ic \&tl No \& Ap Ar left Ap Ar center Ap Ar right Ap
 Print a title line.
 Currently unsupported.
 .It Ic \&tm Ar string
 Print to standard error output.
 Currently ignored.
 .It Ic \&tm1 Ar string
 Print to standard error output, allowing leading blanks.
 This is a groff extension and currently ignored.
 .It Ic \&tmc Ar string
 Print to standard error output without a trailing newline.
 This is a groff extension and currently ignored.
 .It Ic \&tr Ar glyph glyph ...
 Output character translation.
 The first glyph in each pair is replaced by the second one.
 Character escapes can be used; for example,
 .Pp
 .Dl tr \e(xx\e(yy
 .Pp
 replaces all invocations of \e(xx with \e(yy.
 .It Ic \&track Ar font minps width1 maxps width2
 Static letter space tracking.
 This is a Heirloom extension and currently ignored.
 .It Ic \&transchar Ar char ...
 Define transparent characters for sentence-ending.
 This is a Heirloom extension and currently ignored.
 .It Ic \&trf Ar filename
 Output the contents of a file, disallowing invalid characters.
 This is a groff extension and ignored because insecure.
 .It Ic \&trimat Ar left top width height
 Set the TrimBox page parameter for PDF generation.
 This is a Heirloom extension and currently ignored.
 .It Ic \&trin Ar glyph glyph ...
 Output character translation, ignored by
 .Ic \&asciify .
 Currently unsupported.
 .It Ic \&trnt Ar glyph glyph ...
 Output character translation, ignored by \e!.
 Currently unsupported.
 .It Ic \&troff
 Force troff mode.
 This is a groff extension and currently ignored.
 .It Ic \&TS
 Begin a table, which formats input in aligned rows and columns.
 See
 .Xr tbl 7
 for a description of the tbl language.
 .It Ic \&uf Ar font
 Globally set the underline font.
 Currently ignored.
 .It Ic \&ul Op Ar N
 Underline next
 .Ar N
 input lines.
 Currently ignored.
 .It Ic \&unformat Ar divname
 Unformat spaces and tabs in a diversion.
 Currently unsupported.
 .It Ic \&unwatch Ar macroname
 Disable notification for string or macro.
 This is a Heirloom extension and currently ignored.
 .It Ic \&unwatchn Ar register
 Disable notification for register.
 This is a Heirloom extension and currently ignored.
 .It Ic \&vpt Op Cm 1 | 0
 Enable or disable vertical position traps.
 This is a groff extension and currently ignored.
 .It Ic \&vs Op Oo Cm + Ns | Ns Cm - Oc Ns Ar height
 Change vertical spacing.
 Currently ignored.
 .It Ic \&warn Ar flags
 Set warning level.
 Currently ignored.
 .It Ic \&warnscale Ar si
 Set the scaling indicator used in warnings.
 This is a groff extension and currently ignored.
 .It Ic \&watch Ar macroname
 Notify on change of string or macro.
 This is a Heirloom extension and currently ignored.
 .It Ic \&watchlength Ar maxlength
 On change, report the contents of macros and strings
 up to the specified length.
 This is a Heirloom extension and currently ignored.
 .It Ic \&watchn Ar register
 Notify on change of register.
 This is a Heirloom extension and currently ignored.
 .It Ic \&wh Ar dist Op Ar macroname
 Set a page location trap.
 Currently unsupported.
 .It Ic \&while Ar condition body
 Repeated execution while a condition is true.
 Currently unsupported.
 .It Ic \&write Oo \(dq Oc Ns Ar string
 Write to an open file.
 Ignored because insecure.
 .It Ic \&writec Oo \(dq Oc Ns Ar string
 Write to an open file without appending a newline.
 Ignored because insecure.
 .It Ic \&writem Ar macroname
 Write macro or string to an open file.
 Ignored because insecure.
 .It Ic \&xflag Ar level
 Set the extension level.
 This is a Heirloom extension and currently ignored.
 .El
 .Ss Numerical expressions
 The
 .Sx \&nr ,
 .Sx \&if ,
 and
 .Sx \&ie
 requests accept integer numerical expressions as arguments.
 These are always evaluated using the C
 .Vt int
 type; integer overflow works the same way as in the C language.
 Numbers consist of an arbitrary number of digits
 .Sq 0
 to
 .Sq 9
 prefixed by an optional sign
 .Sq +
 or
 .Sq - .
 Each number may be followed by one optional scaling unit described below
 .Sx Scaling Widths .
 The following equations hold:
 .Bd -literal -offset indent
 1i = 6v = 6P = 10m = 10n = 72p = 1000M = 240u = 240
 254c = 100i = 24000u = 24000
 1f = 65536u = 65536
 .Ed
 .Pp
 The following binary operators are implemented.
 Unless otherwise stated, they behave as in the C language:
 .Pp
 .Bl -tag -width 2n -compact
 .It Ic +
 addition
 .It Ic -
 subtraction
 .It Ic *
 multiplication
 .It Ic /
 division
 .It Ic %
 remainder of division
 .It Ic <
 less than
 .It Ic >
 greater than
 .It Ic ==
 equal to
 .It Ic =
 equal to, same effect as
 .Ic ==
 (this differs from C)
 .It Ic <=
 less than or equal to
 .It Ic >=
 greater than or equal to
 .It Ic <>
 not equal to (corresponds to C
 .Ic != ;
 this one is of limited portability, it is supported by Heirloom roff,
 but not by groff)
 .It Ic &
 logical and (corresponds to C
 .Ic && )
 .It Ic \&:
 logical or (corresponds to C
-.Ic \&|| )
+.Ic || )
 .It Ic ?
 maximum (not available in C)
 .El
 .Pp
 There is no concept of precedence; evaluation proceeds from left to right,
 except when subexpressions are enclosed in parentheses.
 Inside parentheses, whitespace is ignored.
 .Sh ESCAPE SEQUENCE REFERENCE
 The
 .Xr mandoc 1
 .Nm
 parser recognises the following escape sequences.
 Note that the
 .Nm
 language defines more escape sequences not implemented in
 .Xr mandoc 1 .
 In
 .Xr mdoc 7
 and
 .Xr man 7
 documents, using escape sequences is discouraged except for those
 described in the
 .Sx LANGUAGE SYNTAX
 section above.
 .Pp
 A backslash followed by any character not listed here
 simply prints that character itself.
 .Ss \e
 A backslash at the end of an input line can be used to continue the
 logical input line on the next physical input line, joining the text
 on both lines together as if it were on a single input line.
 .Ss \e
 The escape sequence backslash-space
 .Pq Sq \e\ \&
 is an unpaddable space-sized non-breaking space character; see
 .Sx Whitespace .
 .Ss \e\(dq
 The rest of the input line is treated as
 .Sx Comments .
 .Ss \e%
 Hyphenation allowed at this point of the word; ignored by
 .Xr mandoc 1 .
 .Ss \e&
 Non-printing zero-width character; see
 .Sx Whitespace .
 .Ss \e\(aq
 Acute accent special character; use
 .Sq \e(aa
 instead.
 .Ss \e( Ns Ar cc
 .Sx Special Characters
 with two-letter names, see
 .Xr mandoc_char 7 .
-.Ss \e*[ Ns Ar name ]
+.Ss \e* Ns Bq Ar name
 Interpolate the string with the
 .Ar name ;
 see
 .Sx Predefined Strings
 and
 .Sx ds .
 For short names, there are variants
 .No \e* Ns Ar c
 and
 .No \e*( Ns Ar cc .
 .Ss \e,
 Left italic correction (groff extension); ignored by
 .Xr mandoc 1 .
 .Ss \e-
 Special character
 .Dq mathematical minus sign .
 .Ss \e/
 Right italic correction (groff extension); ignored by
 .Xr mandoc 1 .
-.Ss \e[ Ns Ar name ]
+.Ss \e Ns Bq Ar name
 .Sx Special Characters
 with names of arbitrary length, see
 .Xr mandoc_char 7 .
 .Ss \e^
 One-twelfth em half-narrow space character, effectively zero-width in
 .Xr mandoc 1 .
 .Ss \e`
 Grave accent special character; use
 .Sq \e(ga
 instead.
 .Ss \e{
 Begin conditional input; see
 .Sx if .
 .Ss \e\(ba
 One-sixth em narrow space character, effectively zero-width in
 .Xr mandoc 1 .
 .Ss \e}
 End conditional input; see
 .Sx if .
 .Ss \e~
 Paddable non-breaking space character.
 .Ss \e0
 Digit width space character.
 .Ss \eA\(aq Ns Ar string Ns \(aq
 Anchor definition; ignored by
 .Xr mandoc 1 .
 .Ss \eB\(aq Ns Ar string Ns \(aq
 Interpolate
 .Sq 1
 if
 .Ar string
 conforms to the syntax of
 .Sx Numerical expressions
 explained above and
 .Sq 0
 otherwise.
 .Ss \eb\(aq Ns Ar string Ns \(aq
 Bracket building function; ignored by
 .Xr mandoc 1 .
 .Ss \eC\(aq Ns Ar name Ns \(aq
 .Sx Special Characters
 with names of arbitrary length.
 .Ss \ec
 When encountered at the end of an input text line,
 the next input text line is considered to continue that line,
 even if there are request or macro lines in between.
 No whitespace is inserted.
 .Ss \eD\(aq Ns Ar string Ns \(aq
 Draw graphics function; ignored by
 .Xr mandoc 1 .
 .Ss \ed
 Move down by half a line; ignored by
 .Xr mandoc 1 .
 .Ss \ee
 Backslash special character.
-.Ss \eF[ Ns Ar name ]
+.Ss \eF Ns Bq Ar name
 Switch font family (groff extension); ignored by
 .Xr mandoc 1 .
 For short names, there are variants
 .No \eF Ns Ar c
 and
 .No \eF( Ns Ar cc .
-.Ss \ef[ Ns Ar name ]
+.Ss \ef Ns Bq Ar name
 Switch to the font
 .Ar name ,
 see
 .Sx Text Decoration .
 For short names, there are variants
 .No \ef Ns Ar c
 and
 .No \ef( Ns Ar cc .
-.Ss \eg[ Ns Ar name ]
+.Ss \eg Ns Bq Ar name
 Interpolate the format of a number register; ignored by
 .Xr mandoc 1 .
 For short names, there are variants
 .No \eg Ns Ar c
 and
 .No \eg( Ns Ar cc .
 .Ss \eH\(aq Ns Oo +|- Oc Ns Ar number Ns \(aq
 Set the height of the current font; ignored by
 .Xr mandoc 1 .
-.Ss \eh\(aq Ns Ar width Ns \(aq
-Horizontal motion relative to the current position.
+.Ss \eh\(aq Ns Oo Cm \&| Oc Ns Ar width Ns \(aq
+Horizontal motion.
+If the vertical bar is given, the motion is relative to the current
+indentation.
+Otherwise, it is relative to the current position.
 The default scaling unit is
 .Cm m .
-.Ss \ek[ Ns Ar name ]
+.Ss \ek Ns Bq Ar name
 Mark horizontal input place in register; ignored by
 .Xr mandoc 1 .
 For short names, there are variants
 .No \ek Ns Ar c
 and
 .No \ek( Ns Ar cc .
 .Ss \eL\(aq Ns Ar number Ns Oo Ar c Oc Ns \(aq
 Vertical line drawing function; ignored by
 .Xr mandoc 1 .
 .Ss \el\(aq Ns Ar width Ns Oo Ar c Oc Ns \(aq
 Draw a horizontal line of
 .Ar width
 using the glyph
 .Ar c .
-.Ss \eM[ Ns Ar name ]
+.Ss \eM Ns Bq Ar name
 Set fill (background) color (groff extension); ignored by
 .Xr mandoc 1 .
 For short names, there are variants
 .No \eM Ns Ar c
 and
 .No \eM( Ns Ar cc .
-.Ss \em[ Ns Ar name ]
+.Ss \em Ns Bq Ar name
 Set glyph drawing color (groff extension); ignored by
 .Xr mandoc 1 .
 For short names, there are variants
 .No \em Ns Ar c
 and
 .No \em( Ns Ar cc .
 .Ss \eN\(aq Ns Ar number Ns \(aq
 Character
 .Ar number
 on the current font.
-.Ss \en[ Ns Ar name ]
+.Ss \en Ns Bq Ar name
 Interpolate the number register
 .Ar name .
 For short names, there are variants
 .No \en Ns Ar c
 and
 .No \en( Ns Ar cc .
 .Ss \eo\(aq Ns Ar string Ns \(aq
 Overstrike, writing all the characters contained in the
 .Ar string
 to the same output position.
 In terminal and HTML output modes,
 only the last one of the characters is visible.
+.Ss \ep
+Break the output line at the end of the current word.
 .Ss \eR\(aq Ns Ar name Oo +|- Oc Ns Ar number Ns \(aq
 Set number register; ignored by
 .Xr mandoc 1 .
 .Ss \eS\(aq Ns Ar number Ns \(aq
 Slant output; ignored by
 .Xr mandoc 1 .
 .Ss \es\(aq Ns Oo +|- Oc Ns Ar number Ns \(aq
 Change point size; ignored by
 .Xr mandoc 1 .
 Alternative forms
 .No \es Ns Oo +|- Oc Ns Ar n ,
 .No \es Ns Oo +|- Oc Ns \(aq Ns Ar number Ns \(aq ,
-.No \es Ns [ Oo +|- Oc Ns Ar number ] ,
+.No \es Ns Bq Oo +|- Oc Ns Ar number ,
 and
-.No \es Ns Oo +|- Oc Ns [ Ar number Ns ]
+.No \es Ns Oo +|- Oc Ns Bq Ar number
 are also parsed and ignored.
 .Ss \et
 Horizontal tab; ignored by
 .Xr mandoc 1 .
 .Ss \eu
 Move up by half a line; ignored by
 .Xr mandoc 1 .
-.Ss \eV[ Ns Ar name ]
+.Ss \eV Ns Bq Ar name
 Interpolate an environment variable; ignored by
 .Xr mandoc 1 .
 For short names, there are variants
 .No \eV Ns Ar c
 and
 .No \eV( Ns Ar cc .
 .Ss \ev\(aq Ns Ar number Ns \(aq
 Vertical motion; ignored by
 .Xr mandoc 1 .
 .Ss \ew\(aq Ns Ar string Ns \(aq
 Interpolate the width of the
 .Ar string .
 The
 .Xr mandoc 1
 implementation assumes that after expansion of user-defined strings, the
 .Ar string
 only contains normal characters, no escape sequences, and that each
 character has a width of 24 basic units.
 .Ss \eX\(aq Ns Ar string Ns \(aq
 Output
 .Ar string
 as device control function; ignored in nroff mode and by
 .Xr mandoc 1 .
 .Ss \ex\(aq Ns Ar number Ns \(aq
 Extra line space function; ignored by
 .Xr mandoc 1 .
-.Ss \eY[ Ns Ar name ]
+.Ss \eY Ns Bq Ar name
 Output a string as a device control function; ignored in nroff mode and by
 .Xr mandoc 1 .
 For short names, there are variants
 .No \eY Ns Ar c
 and
 .No \eY( Ns Ar cc .
 .Ss \eZ\(aq Ns Ar string Ns \(aq
 Print
 .Ar string
 with zero width and height; ignored by
 .Xr mandoc 1 .
 .Ss \ez
 Output the next character without advancing the cursor position.
 .Sh COMPATIBILITY
 The
 .Xr mandoc 1
 implementation of the
 .Nm
 language is intentionally incomplete.
 Unimplemented features include:
 .Pp
 .Bl -dash -compact
 .It
 For security reasons,
 .Xr mandoc 1
 never reads or writes external files except via
 .Sx \&so
 requests with safe relative paths.
 .It
 There is no automatic hyphenation, no adjustment to the right margin,
 and no centering; the output is always set flush-left.
 .It
 Support for setting tabulator positions
 and tabulator and leader characters is missing,
 and support for manually changing indentation is limited.
 .It
 The
 .Sq u
 scaling unit is the default terminal unit.
 In traditional troff systems, this unit changes depending on the
 output media.
 .It
 Width measurements are implemented in a crude way
 and often yield wrong results.
 Explicit movement requests and escapes are ignored.
 .It
 There is no concept of output pages, no support for floats,
 graphics drawing, and picture inclusion;
 terminal output is always continuous.
 .It
 Requests regarding color, font families, and glyph manipulation
 are ignored.
 Font support is very limited.
 Kerning is not implemented, and no ligatures are produced.
 .It
 The
 .Qq \(aq
 macro control character does not suppress output line breaks.
 .It
 Diversions are not implemented,
 and support for traps is very incomplete.
 .It
 While recursion is supported,
 .Sx \&while
 loops are not.
 .El
 .Pp
 The special semantics of the
 .Cm nS
 number register is an idiosyncracy of
 .Ox
 manuals and not supported by other
 .Xr mdoc 7
 implementations.
 .Sh SEE ALSO
 .Xr mandoc 1 ,
 .Xr eqn 7 ,
 .Xr man 7 ,
 .Xr mandoc_char 7 ,
 .Xr mdoc 7 ,
 .Xr tbl 7
 .Rs
 .%A Joseph F. Ossanna
 .%A Brian W. Kernighan
 .%I AT&T Bell Laboratories
 .%T Troff User's Manual
 .%R Computing Science Technical Report
 .%N 54
 .%C Murray Hill, New Jersey
 .%D 1976 and 1992
 .%U http://www.kohala.com/start/troff/cstr54.ps
 .Re
 .Rs
 .%A Joseph F. Ossanna
 .%A Brian W. Kernighan
 .%A Gunnar Ritter
 .%T Heirloom Documentation Tools Nroff/Troff User's Manual
 .%D September 17, 2007
 .%U http://heirloom.sourceforge.net/doctools/troff.pdf
 .Re
 .Sh HISTORY
 The RUNOFF typesetting system, whose input forms the basis for
 .Nm ,
 was written in MAD and FAP for the CTSS operating system by Jerome E.
 Saltzer in 1964.
 Doug McIlroy rewrote it in BCPL in 1969, renaming it
 .Nm .
 Dennis M. Ritchie rewrote McIlroy's
 .Nm
 in PDP-11 assembly for
 .At v1 ,
 Joseph F. Ossanna improved roff and renamed it nroff
 for
 .At v2 ,
 then ported nroff to C as troff, which Brian W. Kernighan released with
 .At v7 .
 In 1989, James Clarke re-implemented troff in C++, naming it groff.
 .Sh AUTHORS
 .An -nosplit
 This
 .Nm
 reference was written by
 .An Kristaps Dzonsons Aq Mt kristaps@bsd.lv
 and
 .An Ingo Schwarze Aq Mt schwarze@openbsd.org .
Index: vendor/mdocml/dist/roff.c
===================================================================
--- vendor/mdocml/dist/roff.c	(revision 321806)
+++ vendor/mdocml/dist/roff.c	(revision 321807)
@@ -1,3633 +1,3748 @@
-/*	$Id: roff.c,v 1.306 2017/06/07 00:50:34 schwarze Exp $ */
+/*	$Id: roff.c,v 1.324 2017/07/14 17:16:16 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons 
  * Copyright (c) 2010-2015, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc.h"
 #include "mandoc_aux.h"
 #include "mandoc_ohash.h"
 #include "roff.h"
 #include "libmandoc.h"
 #include "roff_int.h"
 #include "libroff.h"
 
 /* Maximum number of string expansions per line, to break infinite loops. */
 #define	EXPAND_LIMIT	1000
 
+/* Types of definitions of macros and strings. */
+#define	ROFFDEF_USER	(1 << 1)  /* User-defined. */
+#define	ROFFDEF_PRE	(1 << 2)  /* Predefined. */
+#define	ROFFDEF_REN	(1 << 3)  /* Renamed standard macro. */
+#define	ROFFDEF_STD	(1 << 4)  /* mdoc(7) or man(7) macro. */
+#define	ROFFDEF_ANY	(ROFFDEF_USER | ROFFDEF_PRE | \
+			 ROFFDEF_REN | ROFFDEF_STD)
+
 /* --- data types --------------------------------------------------------- */
 
 /*
  * An incredibly-simple string buffer.
  */
 struct	roffstr {
 	char		*p; /* nil-terminated buffer */
 	size_t		 sz; /* saved strlen(p) */
 };
 
 /*
  * A key-value roffstr pair as part of a singly-linked list.
  */
 struct	roffkv {
 	struct roffstr	 key;
 	struct roffstr	 val;
 	struct roffkv	*next; /* next in list */
 };
 
 /*
  * A single number register as part of a singly-linked list.
  */
 struct	roffreg {
 	struct roffstr	 key;
 	int		 val;
 	struct roffreg	*next;
 };
 
 /*
  * Association of request and macro names with token IDs.
  */
 struct	roffreq {
 	enum roff_tok	 tok;
 	char		 name[];
 };
 
 struct	roff {
 	struct mparse	*parse; /* parse point */
 	struct roff_man	*man; /* mdoc or man parser */
 	struct roffnode	*last; /* leaf of stack */
 	int		*rstack; /* stack of inverted `ie' values */
 	struct ohash	*reqtab; /* request lookup table */
 	struct roffreg	*regtab; /* number registers */
 	struct roffkv	*strtab; /* user-defined strings & macros */
 	struct roffkv	*rentab; /* renamed strings & macros */
 	struct roffkv	*xmbtab; /* multi-byte trans table (`tr') */
 	struct roffstr	*xtab; /* single-byte trans table (`tr') */
 	const char	*current_string; /* value of last called user macro */
 	struct tbl_node	*first_tbl; /* first table parsed */
 	struct tbl_node	*last_tbl; /* last table parsed */
 	struct tbl_node	*tbl; /* current table being parsed */
-	struct eqn_node	*last_eqn; /* last equation parsed */
-	struct eqn_node	*first_eqn; /* first equation parsed */
-	struct eqn_node	*eqn; /* current equation being parsed */
+	struct eqn_node	*last_eqn; /* equation parser */
+	struct eqn_node	*eqn; /* active equation parser */
 	int		 eqn_inline; /* current equation is inline */
 	int		 options; /* parse options */
 	int		 rstacksz; /* current size limit of rstack */
 	int		 rstackpos; /* position in rstack */
 	int		 format; /* current file in mdoc or man format */
 	int		 argc; /* number of args of the last macro */
 	char		 control; /* control character */
 	char		 escape; /* escape character */
 };
 
 struct	roffnode {
 	enum roff_tok	 tok; /* type of node */
 	struct roffnode	*parent; /* up one in stack */
 	int		 line; /* parse line */
 	int		 col; /* parse col */
 	char		*name; /* node name, e.g. macro name */
 	char		*end; /* end-rules: custom token */
 	int		 endspan; /* end-rules: next-line or infty */
 	int		 rule; /* current evaluation rule */
 };
 
 #define	ROFF_ARGS	 struct roff *r, /* parse ctx */ \
 			 enum roff_tok tok, /* tok of macro */ \
 			 struct buf *buf, /* input buffer */ \
 			 int ln, /* parse line */ \
 			 int ppos, /* original pos in buffer */ \
 			 int pos, /* current pos in buffer */ \
 			 int *offs /* reset offset of buffer data */
 
 typedef	enum rofferr (*roffproc)(ROFF_ARGS);
 
 struct	roffmac {
 	roffproc	 proc; /* process new macro */
 	roffproc	 text; /* process as child text of macro */
 	roffproc	 sub; /* process as child of macro */
 	int		 flags;
 #define	ROFFMAC_STRUCT	(1 << 0) /* always interpret */
 };
 
 struct	predef {
 	const char	*name; /* predefined input name */
 	const char	*str; /* replacement symbol */
 };
 
 #define	PREDEF(__name, __str) \
 	{ (__name), (__str) },
 
 /* --- function prototypes ------------------------------------------------ */
 
 static	void		 roffnode_cleanscope(struct roff *);
 static	void		 roffnode_pop(struct roff *);
 static	void		 roffnode_push(struct roff *, enum roff_tok,
 				const char *, int, int);
+static	void		 roff_addtbl(struct roff_man *, struct tbl_node *);
+static	enum rofferr	 roff_als(ROFF_ARGS);
 static	enum rofferr	 roff_block(ROFF_ARGS);
 static	enum rofferr	 roff_block_text(ROFF_ARGS);
 static	enum rofferr	 roff_block_sub(ROFF_ARGS);
 static	enum rofferr	 roff_br(ROFF_ARGS);
 static	enum rofferr	 roff_cblock(ROFF_ARGS);
 static	enum rofferr	 roff_cc(ROFF_ARGS);
 static	void		 roff_ccond(struct roff *, int, int);
 static	enum rofferr	 roff_cond(ROFF_ARGS);
 static	enum rofferr	 roff_cond_text(ROFF_ARGS);
 static	enum rofferr	 roff_cond_sub(ROFF_ARGS);
 static	enum rofferr	 roff_ds(ROFF_ARGS);
 static	enum rofferr	 roff_ec(ROFF_ARGS);
 static	enum rofferr	 roff_eo(ROFF_ARGS);
 static	enum rofferr	 roff_eqndelim(struct roff *, struct buf *, int);
 static	int		 roff_evalcond(struct roff *r, int, char *, int *);
 static	int		 roff_evalnum(struct roff *, int,
 				const char *, int *, int *, int);
 static	int		 roff_evalpar(struct roff *, int,
 				const char *, int *, int *, int);
 static	int		 roff_evalstrcond(const char *, int *);
 static	void		 roff_free1(struct roff *);
 static	void		 roff_freereg(struct roffreg *);
 static	void		 roff_freestr(struct roffkv *);
 static	size_t		 roff_getname(struct roff *, char **, int, int);
 static	int		 roff_getnum(const char *, int *, int *, int);
 static	int		 roff_getop(const char *, int *, char *);
 static	int		 roff_getregn(const struct roff *,
 				const char *, size_t);
 static	int		 roff_getregro(const struct roff *,
 				const char *name);
-static	const char	*roff_getrenn(const struct roff *,
-				const char *, size_t);
 static	const char	*roff_getstrn(const struct roff *,
-				const char *, size_t);
+				const char *, size_t, int *);
 static	int		 roff_hasregn(const struct roff *,
 				const char *, size_t);
 static	enum rofferr	 roff_insec(ROFF_ARGS);
 static	enum rofferr	 roff_it(ROFF_ARGS);
 static	enum rofferr	 roff_line_ignore(ROFF_ARGS);
 static	void		 roff_man_alloc1(struct roff_man *);
 static	void		 roff_man_free1(struct roff_man *);
 static	enum rofferr	 roff_manyarg(ROFF_ARGS);
 static	enum rofferr	 roff_nr(ROFF_ARGS);
 static	enum rofferr	 roff_onearg(ROFF_ARGS);
 static	enum roff_tok	 roff_parse(struct roff *, char *, int *,
 				int, int);
 static	enum rofferr	 roff_parsetext(struct roff *, struct buf *,
 				int, int *);
 static	enum rofferr	 roff_renamed(ROFF_ARGS);
 static	enum rofferr	 roff_res(struct roff *, struct buf *, int, int);
 static	enum rofferr	 roff_rm(ROFF_ARGS);
 static	enum rofferr	 roff_rn(ROFF_ARGS);
 static	enum rofferr	 roff_rr(ROFF_ARGS);
 static	void		 roff_setstr(struct roff *,
 				const char *, const char *, int);
 static	void		 roff_setstrn(struct roffkv **, const char *,
 				size_t, const char *, size_t, int);
 static	enum rofferr	 roff_so(ROFF_ARGS);
 static	enum rofferr	 roff_tr(ROFF_ARGS);
 static	enum rofferr	 roff_Dd(ROFF_ARGS);
-static	enum rofferr	 roff_TH(ROFF_ARGS);
 static	enum rofferr	 roff_TE(ROFF_ARGS);
 static	enum rofferr	 roff_TS(ROFF_ARGS);
 static	enum rofferr	 roff_EQ(ROFF_ARGS);
 static	enum rofferr	 roff_EN(ROFF_ARGS);
 static	enum rofferr	 roff_T_(ROFF_ARGS);
 static	enum rofferr	 roff_unsupp(ROFF_ARGS);
 static	enum rofferr	 roff_userdef(ROFF_ARGS);
 
 /* --- constant data ------------------------------------------------------ */
 
 #define	ROFFNUM_SCALE	(1 << 0)  /* Honour scaling in roff_getnum(). */
 #define	ROFFNUM_WHITE	(1 << 1)  /* Skip whitespace in roff_evalnum(). */
 
 const char *__roff_name[MAN_MAX + 1] = {
 	"br",		"ce",		"ft",		"ll",
-	"mc",		"sp",		"ta",		"ti",
-	NULL,
+	"mc",		"po",		"rj",		"sp",
+	"ta",		"ti",		NULL,
 	"ab",		"ad",		"af",		"aln",
 	"als",		"am",		"am1",		"ami",
 	"ami1",		"as",		"as1",		"asciify",
 	"backtrace",	"bd",		"bleedat",	"blm",
         "box",		"boxa",		"bp",		"BP",
 	"break",	"breakchar",	"brnl",		"brp",
 	"brpnl",	"c2",		"cc",
 	"cf",		"cflags",	"ch",		"char",
 	"chop",		"class",	"close",	"CL",
 	"color",	"composite",	"continue",	"cp",
 	"cropat",	"cs",		"cu",		"da",
 	"dch",		"Dd",		"de",		"de1",
 	"defcolor",	"dei",		"dei1",		"device",
 	"devicem",	"di",		"do",		"ds",
 	"ds1",		"dwh",		"dt",		"ec",
 	"ecr",		"ecs",		"el",		"em",
 	"EN",		"eo",		"EP",		"EQ",
 	"errprint",	"ev",		"evc",		"ex",
 	"fallback",	"fam",		"fc",		"fchar",
 	"fcolor",	"fdeferlig",	"feature",	"fkern",
 	"fl",		"flig",		"fp",		"fps",
 	"fschar",	"fspacewidth",	"fspecial",	"ftr",
 	"fzoom",	"gcolor",	"hc",		"hcode",
 	"hidechar",	"hla",		"hlm",		"hpf",
 	"hpfa",		"hpfcode",	"hw",		"hy",
 	"hylang",	"hylen",	"hym",		"hypp",
 	"hys",		"ie",		"if",		"ig",
 	"index",	"it",		"itc",		"IX",
 	"kern",		"kernafter",	"kernbefore",	"kernpair",
 	"lc",		"lc_ctype",	"lds",		"length",
 	"letadj",	"lf",		"lg",		"lhang",
 	"linetabs",	"lnr",		"lnrf",		"lpfx",
 	"ls",		"lsm",		"lt",
 	"mediasize",	"minss",	"mk",		"mso",
 	"na",		"ne",		"nh",		"nhychar",
 	"nm",		"nn",		"nop",		"nr",
 	"nrf",		"nroff",	"ns",		"nx",
 	"open",		"opena",	"os",		"output",
 	"padj",		"papersize",	"pc",		"pev",
 	"pi",		"PI",		"pl",		"pm",
-	"pn",		"pnr",		"po",		"ps",
+	"pn",		"pnr",		"ps",
 	"psbb",		"pshape",	"pso",		"ptr",
 	"pvs",		"rchar",	"rd",		"recursionlimit",
-	"return",	"rfschar",	"rhang",	"rj",
+	"return",	"rfschar",	"rhang",
 	"rm",		"rn",		"rnn",		"rr",
 	"rs",		"rt",		"schar",	"sentchar",
 	"shc",		"shift",	"sizes",	"so",
 	"spacewidth",	"special",	"spreadwarn",	"ss",
 	"sty",		"substring",	"sv",		"sy",
 	"T&",		"tc",		"TE",
 	"TH",		"tkf",		"tl",
 	"tm",		"tm1",		"tmc",		"tr",
 	"track",	"transchar",	"trf",		"trimat",
 	"trin",		"trnt",		"troff",	"TS",
 	"uf",		"ul",		"unformat",	"unwatch",
 	"unwatchn",	"vpt",		"vs",		"warn",
 	"warnscale",	"watch",	"watchlength",	"watchn",
 	"wh",		"while",	"write",	"writec",
 	"writem",	"xflag",	".",		NULL,
 	NULL,		"text",
 	"Dd",		"Dt",		"Os",		"Sh",
 	"Ss",		"Pp",		"D1",		"Dl",
 	"Bd",		"Ed",		"Bl",		"El",
 	"It",		"Ad",		"An",		"Ap",
 	"Ar",		"Cd",		"Cm",		"Dv",
 	"Er",		"Ev",		"Ex",		"Fa",
 	"Fd",		"Fl",		"Fn",		"Ft",
 	"Ic",		"In",		"Li",		"Nd",
 	"Nm",		"Op",		"Ot",		"Pa",
 	"Rv",		"St",		"Va",		"Vt",
 	"Xr",		"%A",		"%B",		"%D",
 	"%I",		"%J",		"%N",		"%O",
 	"%P",		"%R",		"%T",		"%V",
 	"Ac",		"Ao",		"Aq",		"At",
 	"Bc",		"Bf",		"Bo",		"Bq",
 	"Bsx",		"Bx",		"Db",		"Dc",
 	"Do",		"Dq",		"Ec",		"Ef",
 	"Em",		"Eo",		"Fx",		"Ms",
 	"No",		"Ns",		"Nx",		"Ox",
 	"Pc",		"Pf",		"Po",		"Pq",
 	"Qc",		"Ql",		"Qo",		"Qq",
 	"Re",		"Rs",		"Sc",		"So",
 	"Sq",		"Sm",		"Sx",		"Sy",
 	"Tn",		"Ux",		"Xc",		"Xo",
 	"Fo",		"Fc",		"Oo",		"Oc",
 	"Bk",		"Ek",		"Bt",		"Hf",
 	"Fr",		"Ud",		"Lb",		"Lp",
 	"Lk",		"Mt",		"Brq",		"Bro",
 	"Brc",		"%C",		"Es",		"En",
 	"Dx",		"%Q",		"%U",		"Ta",
 	NULL,
 	"TH",		"SH",		"SS",		"TP",
 	"LP",		"PP",		"P",		"IP",
 	"HP",		"SM",		"SB",		"BI",
 	"IB",		"BR",		"RB",		"R",
 	"B",		"I",		"IR",		"RI",
 	"nf",		"fi",
 	"RE",		"RS",		"DT",		"UC",
 	"PD",		"AT",		"in",
 	"OP",		"EX",		"EE",		"UR",
-	"UE",		NULL
+	"UE",		"MT",		"ME",		NULL
 };
 const	char *const *roff_name = __roff_name;
 
 static	struct roffmac	 roffs[TOKEN_NONE] = {
 	{ roff_br, NULL, NULL, 0 },  /* br */
 	{ roff_onearg, NULL, NULL, 0 },  /* ce */
 	{ roff_onearg, NULL, NULL, 0 },  /* ft */
 	{ roff_onearg, NULL, NULL, 0 },  /* ll */
 	{ roff_onearg, NULL, NULL, 0 },  /* mc */
+	{ roff_onearg, NULL, NULL, 0 },  /* po */
+	{ roff_onearg, NULL, NULL, 0 },  /* rj */
 	{ roff_onearg, NULL, NULL, 0 },  /* sp */
 	{ roff_manyarg, NULL, NULL, 0 },  /* ta */
 	{ roff_onearg, NULL, NULL, 0 },  /* ti */
 	{ NULL, NULL, NULL, 0 },  /* ROFF_MAX */
 	{ roff_unsupp, NULL, NULL, 0 },  /* ab */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* ad */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* af */
 	{ roff_unsupp, NULL, NULL, 0 },  /* aln */
-	{ roff_unsupp, NULL, NULL, 0 },  /* als */
+	{ roff_als, NULL, NULL, 0 },  /* als */
 	{ roff_block, roff_block_text, roff_block_sub, 0 },  /* am */
 	{ roff_block, roff_block_text, roff_block_sub, 0 },  /* am1 */
 	{ roff_block, roff_block_text, roff_block_sub, 0 },  /* ami */
 	{ roff_block, roff_block_text, roff_block_sub, 0 },  /* ami1 */
 	{ roff_ds, NULL, NULL, 0 },  /* as */
 	{ roff_ds, NULL, NULL, 0 },  /* as1 */
 	{ roff_unsupp, NULL, NULL, 0 },  /* asciify */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* backtrace */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* bd */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* bleedat */
 	{ roff_unsupp, NULL, NULL, 0 },  /* blm */
 	{ roff_unsupp, NULL, NULL, 0 },  /* box */
 	{ roff_unsupp, NULL, NULL, 0 },  /* boxa */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* bp */
 	{ roff_unsupp, NULL, NULL, 0 },  /* BP */
 	{ roff_unsupp, NULL, NULL, 0 },  /* break */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* breakchar */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* brnl */
 	{ roff_br, NULL, NULL, 0 },  /* brp */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* brpnl */
 	{ roff_unsupp, NULL, NULL, 0 },  /* c2 */
 	{ roff_cc, NULL, NULL, 0 },  /* cc */
 	{ roff_insec, NULL, NULL, 0 },  /* cf */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* cflags */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* ch */
 	{ roff_unsupp, NULL, NULL, 0 },  /* char */
 	{ roff_unsupp, NULL, NULL, 0 },  /* chop */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* class */
 	{ roff_insec, NULL, NULL, 0 },  /* close */
 	{ roff_unsupp, NULL, NULL, 0 },  /* CL */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* color */
 	{ roff_unsupp, NULL, NULL, 0 },  /* composite */
 	{ roff_unsupp, NULL, NULL, 0 },  /* continue */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* cp */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* cropat */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* cs */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* cu */
 	{ roff_unsupp, NULL, NULL, 0 },  /* da */
 	{ roff_unsupp, NULL, NULL, 0 },  /* dch */
 	{ roff_Dd, NULL, NULL, 0 },  /* Dd */
 	{ roff_block, roff_block_text, roff_block_sub, 0 },  /* de */
 	{ roff_block, roff_block_text, roff_block_sub, 0 },  /* de1 */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* defcolor */
 	{ roff_block, roff_block_text, roff_block_sub, 0 },  /* dei */
 	{ roff_block, roff_block_text, roff_block_sub, 0 },  /* dei1 */
 	{ roff_unsupp, NULL, NULL, 0 },  /* device */
 	{ roff_unsupp, NULL, NULL, 0 },  /* devicem */
 	{ roff_unsupp, NULL, NULL, 0 },  /* di */
 	{ roff_unsupp, NULL, NULL, 0 },  /* do */
 	{ roff_ds, NULL, NULL, 0 },  /* ds */
 	{ roff_ds, NULL, NULL, 0 },  /* ds1 */
 	{ roff_unsupp, NULL, NULL, 0 },  /* dwh */
 	{ roff_unsupp, NULL, NULL, 0 },  /* dt */
 	{ roff_ec, NULL, NULL, 0 },  /* ec */
 	{ roff_unsupp, NULL, NULL, 0 },  /* ecr */
 	{ roff_unsupp, NULL, NULL, 0 },  /* ecs */
 	{ roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT },  /* el */
 	{ roff_unsupp, NULL, NULL, 0 },  /* em */
 	{ roff_EN, NULL, NULL, 0 },  /* EN */
 	{ roff_eo, NULL, NULL, 0 },  /* eo */
 	{ roff_unsupp, NULL, NULL, 0 },  /* EP */
 	{ roff_EQ, NULL, NULL, 0 },  /* EQ */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* errprint */
 	{ roff_unsupp, NULL, NULL, 0 },  /* ev */
 	{ roff_unsupp, NULL, NULL, 0 },  /* evc */
 	{ roff_unsupp, NULL, NULL, 0 },  /* ex */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* fallback */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* fam */
 	{ roff_unsupp, NULL, NULL, 0 },  /* fc */
 	{ roff_unsupp, NULL, NULL, 0 },  /* fchar */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* fcolor */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* fdeferlig */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* feature */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* fkern */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* fl */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* flig */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* fp */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* fps */
 	{ roff_unsupp, NULL, NULL, 0 },  /* fschar */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* fspacewidth */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* fspecial */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* ftr */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* fzoom */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* gcolor */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* hc */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* hcode */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* hidechar */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* hla */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* hlm */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* hpf */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* hpfa */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* hpfcode */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* hw */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* hy */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* hylang */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* hylen */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* hym */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* hypp */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* hys */
 	{ roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT },  /* ie */
 	{ roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT },  /* if */
 	{ roff_block, roff_block_text, roff_block_sub, 0 },  /* ig */
 	{ roff_unsupp, NULL, NULL, 0 },  /* index */
 	{ roff_it, NULL, NULL, 0 },  /* it */
 	{ roff_unsupp, NULL, NULL, 0 },  /* itc */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* IX */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* kern */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* kernafter */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* kernbefore */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* kernpair */
 	{ roff_unsupp, NULL, NULL, 0 },  /* lc */
 	{ roff_unsupp, NULL, NULL, 0 },  /* lc_ctype */
 	{ roff_unsupp, NULL, NULL, 0 },  /* lds */
 	{ roff_unsupp, NULL, NULL, 0 },  /* length */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* letadj */
 	{ roff_insec, NULL, NULL, 0 },  /* lf */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* lg */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* lhang */
 	{ roff_unsupp, NULL, NULL, 0 },  /* linetabs */
 	{ roff_unsupp, NULL, NULL, 0 },  /* lnr */
 	{ roff_unsupp, NULL, NULL, 0 },  /* lnrf */
 	{ roff_unsupp, NULL, NULL, 0 },  /* lpfx */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* ls */
 	{ roff_unsupp, NULL, NULL, 0 },  /* lsm */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* lt */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* mediasize */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* minss */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* mk */
 	{ roff_insec, NULL, NULL, 0 },  /* mso */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* na */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* ne */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* nh */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* nhychar */
 	{ roff_unsupp, NULL, NULL, 0 },  /* nm */
 	{ roff_unsupp, NULL, NULL, 0 },  /* nn */
 	{ roff_unsupp, NULL, NULL, 0 },  /* nop */
 	{ roff_nr, NULL, NULL, 0 },  /* nr */
 	{ roff_unsupp, NULL, NULL, 0 },  /* nrf */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* nroff */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* ns */
 	{ roff_insec, NULL, NULL, 0 },  /* nx */
 	{ roff_insec, NULL, NULL, 0 },  /* open */
 	{ roff_insec, NULL, NULL, 0 },  /* opena */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* os */
 	{ roff_unsupp, NULL, NULL, 0 },  /* output */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* padj */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* papersize */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* pc */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* pev */
 	{ roff_insec, NULL, NULL, 0 },  /* pi */
 	{ roff_unsupp, NULL, NULL, 0 },  /* PI */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* pl */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* pm */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* pn */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* pnr */
-	{ roff_line_ignore, NULL, NULL, 0 },  /* po */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* ps */
 	{ roff_unsupp, NULL, NULL, 0 },  /* psbb */
 	{ roff_unsupp, NULL, NULL, 0 },  /* pshape */
 	{ roff_insec, NULL, NULL, 0 },  /* pso */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* ptr */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* pvs */
 	{ roff_unsupp, NULL, NULL, 0 },  /* rchar */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* rd */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* recursionlimit */
 	{ roff_unsupp, NULL, NULL, 0 },  /* return */
 	{ roff_unsupp, NULL, NULL, 0 },  /* rfschar */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* rhang */
-	{ roff_line_ignore, NULL, NULL, 0 },  /* rj */
 	{ roff_rm, NULL, NULL, 0 },  /* rm */
 	{ roff_rn, NULL, NULL, 0 },  /* rn */
 	{ roff_unsupp, NULL, NULL, 0 },  /* rnn */
 	{ roff_rr, NULL, NULL, 0 },  /* rr */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* rs */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* rt */
 	{ roff_unsupp, NULL, NULL, 0 },  /* schar */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* sentchar */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* shc */
 	{ roff_unsupp, NULL, NULL, 0 },  /* shift */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* sizes */
 	{ roff_so, NULL, NULL, 0 },  /* so */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* spacewidth */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* special */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* spreadwarn */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* ss */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* sty */
 	{ roff_unsupp, NULL, NULL, 0 },  /* substring */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* sv */
 	{ roff_insec, NULL, NULL, 0 },  /* sy */
 	{ roff_T_, NULL, NULL, 0 },  /* T& */
 	{ roff_unsupp, NULL, NULL, 0 },  /* tc */
 	{ roff_TE, NULL, NULL, 0 },  /* TE */
-	{ roff_TH, NULL, NULL, 0 },  /* TH */
+	{ roff_Dd, NULL, NULL, 0 },  /* TH */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* tkf */
 	{ roff_unsupp, NULL, NULL, 0 },  /* tl */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* tm */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* tm1 */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* tmc */
 	{ roff_tr, NULL, NULL, 0 },  /* tr */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* track */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* transchar */
 	{ roff_insec, NULL, NULL, 0 },  /* trf */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* trimat */
 	{ roff_unsupp, NULL, NULL, 0 },  /* trin */
 	{ roff_unsupp, NULL, NULL, 0 },  /* trnt */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* troff */
 	{ roff_TS, NULL, NULL, 0 },  /* TS */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* uf */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* ul */
 	{ roff_unsupp, NULL, NULL, 0 },  /* unformat */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* unwatch */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* unwatchn */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* vpt */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* vs */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* warn */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* warnscale */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* watch */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* watchlength */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* watchn */
 	{ roff_unsupp, NULL, NULL, 0 },  /* wh */
 	{ roff_unsupp, NULL, NULL, 0 },  /* while */
 	{ roff_insec, NULL, NULL, 0 },  /* write */
 	{ roff_insec, NULL, NULL, 0 },  /* writec */
 	{ roff_insec, NULL, NULL, 0 },  /* writem */
 	{ roff_line_ignore, NULL, NULL, 0 },  /* xflag */
 	{ roff_cblock, NULL, NULL, 0 },  /* . */
 	{ roff_renamed, NULL, NULL, 0 },
 	{ roff_userdef, NULL, NULL, 0 }
 };
 
-/* not currently implemented: Ds em Eq LP Me PP pp Or Rd Sf SH */
-const	char *const __mdoc_reserved[] = {
-	"Ac", "Ad", "An", "Ao", "Ap", "Aq", "Ar", "At",
-	"Bc", "Bd", "Bf", "Bk", "Bl", "Bo", "Bq",
-	"Brc", "Bro", "Brq", "Bsx", "Bt", "Bx",
-	"Cd", "Cm", "Db", "Dc", "Dd", "Dl", "Do", "Dq",
-	"Dt", "Dv", "Dx", "D1",
-	"Ec", "Ed", "Ef", "Ek", "El", "Em",
-	"En", "Eo", "Er", "Es", "Ev", "Ex",
-	"Fa", "Fc", "Fd", "Fl", "Fn", "Fo", "Fr", "Ft", "Fx",
-	"Hf", "Ic", "In", "It", "Lb", "Li", "Lk", "Lp",
-	"Ms", "Mt", "Nd", "Nm", "No", "Ns", "Nx",
-	"Oc", "Oo", "Op", "Os", "Ot", "Ox",
-	"Pa", "Pc", "Pf", "Po", "Pp", "Pq",
-	"Qc", "Ql", "Qo", "Qq", "Re", "Rs", "Rv",
-	"Sc", "Sh", "Sm", "So", "Sq",
-	"Ss", "St", "Sx", "Sy",
-	"Ta", "Tn", "Ud", "Ux", "Va", "Vt", "Xc", "Xo", "Xr",
-	"%A", "%B", "%C", "%D", "%I", "%J", "%N", "%O",
-	"%P", "%Q", "%R", "%T", "%U", "%V",
-	NULL
-};
-
-/* not currently implemented: BT DE DS ME MT PT SY TQ YS */
-const	char *const __man_reserved[] = {
-	"AT", "B", "BI", "BR", "DT",
-	"EE", "EN", "EQ", "EX", "HP", "I", "IB", "IP", "IR",
-	"LP", "OP", "P", "PD", "PP",
-	"R", "RB", "RE", "RI", "RS", "SB", "SH", "SM", "SS",
-	"TE", "TH", "TP", "TS", "T&", "UC", "UE", "UR",
-	NULL
-};
-
 /* Array of injected predefined strings. */
 #define	PREDEFS_MAX	 38
 static	const struct predef predefs[PREDEFS_MAX] = {
 #include "predefs.in"
 };
 
 static	int	 roffce_lines;	/* number of input lines to center */
 static	struct roff_node *roffce_node;  /* active request */
 static	int	 roffit_lines;  /* number of lines to delay */
 static	char	*roffit_macro;  /* nil-terminated macro line */
 
 
 /* --- request table ------------------------------------------------------ */
 
 struct ohash *
 roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
 {
 	struct ohash	*htab;
 	struct roffreq	*req;
 	enum roff_tok	 tok;
 	size_t		 sz;
 	unsigned int	 slot;
 
 	htab = mandoc_malloc(sizeof(*htab));
 	mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
 
 	for (tok = mintok; tok < maxtok; tok++) {
 		if (roff_name[tok] == NULL)
 			continue;
 		sz = strlen(roff_name[tok]);
 		req = mandoc_malloc(sizeof(*req) + sz + 1);
 		req->tok = tok;
 		memcpy(req->name, roff_name[tok], sz + 1);
 		slot = ohash_qlookup(htab, req->name);
 		ohash_insert(htab, slot, req);
 	}
 	return htab;
 }
 
 void
 roffhash_free(struct ohash *htab)
 {
 	struct roffreq	*req;
 	unsigned int	 slot;
 
 	if (htab == NULL)
 		return;
 	for (req = ohash_first(htab, &slot); req != NULL;
 	     req = ohash_next(htab, &slot))
 		free(req);
 	ohash_delete(htab);
 	free(htab);
 }
 
 enum roff_tok
 roffhash_find(struct ohash *htab, const char *name, size_t sz)
 {
 	struct roffreq	*req;
 	const char	*end;
 
 	if (sz) {
 		end = name + sz;
 		req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
 	} else
 		req = ohash_find(htab, ohash_qlookup(htab, name));
 	return req == NULL ? TOKEN_NONE : req->tok;
 }
 
 /* --- stack of request blocks -------------------------------------------- */
 
 /*
  * Pop the current node off of the stack of roff instructions currently
  * pending.
  */
 static void
 roffnode_pop(struct roff *r)
 {
 	struct roffnode	*p;
 
 	assert(r->last);
 	p = r->last;
 
 	r->last = r->last->parent;
 	free(p->name);
 	free(p->end);
 	free(p);
 }
 
 /*
  * Push a roff node onto the instruction stack.  This must later be
  * removed with roffnode_pop().
  */
 static void
 roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
 		int line, int col)
 {
 	struct roffnode	*p;
 
 	p = mandoc_calloc(1, sizeof(struct roffnode));
 	p->tok = tok;
 	if (name)
 		p->name = mandoc_strdup(name);
 	p->parent = r->last;
 	p->line = line;
 	p->col = col;
 	p->rule = p->parent ? p->parent->rule : 0;
 
 	r->last = p;
 }
 
 /* --- roff parser state data management ---------------------------------- */
 
 static void
 roff_free1(struct roff *r)
 {
 	struct tbl_node	*tbl;
-	struct eqn_node	*e;
 	int		 i;
 
 	while (NULL != (tbl = r->first_tbl)) {
 		r->first_tbl = tbl->next;
 		tbl_free(tbl);
 	}
 	r->first_tbl = r->last_tbl = r->tbl = NULL;
 
-	while (NULL != (e = r->first_eqn)) {
-		r->first_eqn = e->next;
-		eqn_free(e);
-	}
-	r->first_eqn = r->last_eqn = r->eqn = NULL;
+	if (r->last_eqn != NULL)
+		eqn_free(r->last_eqn);
+	r->last_eqn = r->eqn = NULL;
 
 	while (r->last)
 		roffnode_pop(r);
 
 	free (r->rstack);
 	r->rstack = NULL;
 	r->rstacksz = 0;
 	r->rstackpos = -1;
 
 	roff_freereg(r->regtab);
 	r->regtab = NULL;
 
 	roff_freestr(r->strtab);
 	roff_freestr(r->rentab);
 	roff_freestr(r->xmbtab);
 	r->strtab = r->rentab = r->xmbtab = NULL;
 
 	if (r->xtab)
 		for (i = 0; i < 128; i++)
 			free(r->xtab[i].p);
 	free(r->xtab);
 	r->xtab = NULL;
 }
 
 void
 roff_reset(struct roff *r)
 {
 	roff_free1(r);
 	r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
 	r->control = '\0';
 	r->escape = '\\';
+	roffce_lines = 0;
+	roffce_node = NULL;
+	roffit_lines = 0;
+	roffit_macro = NULL;
 }
 
 void
 roff_free(struct roff *r)
 {
 	roff_free1(r);
 	roffhash_free(r->reqtab);
 	free(r);
 }
 
 struct roff *
 roff_alloc(struct mparse *parse, int options)
 {
 	struct roff	*r;
 
 	r = mandoc_calloc(1, sizeof(struct roff));
 	r->parse = parse;
 	r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
 	r->options = options;
 	r->format = options & (MPARSE_MDOC | MPARSE_MAN);
 	r->rstackpos = -1;
 	r->escape = '\\';
 	return r;
 }
 
 /* --- syntax tree state data management ---------------------------------- */
 
 static void
 roff_man_free1(struct roff_man *man)
 {
 
 	if (man->first != NULL)
 		roff_node_delete(man, man->first);
 	free(man->meta.msec);
 	free(man->meta.vol);
 	free(man->meta.os);
 	free(man->meta.arch);
 	free(man->meta.title);
 	free(man->meta.name);
 	free(man->meta.date);
 }
 
 static void
 roff_man_alloc1(struct roff_man *man)
 {
 
 	memset(&man->meta, 0, sizeof(man->meta));
 	man->first = mandoc_calloc(1, sizeof(*man->first));
 	man->first->type = ROFFT_ROOT;
 	man->last = man->first;
 	man->last_es = NULL;
 	man->flags = 0;
 	man->macroset = MACROSET_NONE;
 	man->lastsec = man->lastnamed = SEC_NONE;
 	man->next = ROFF_NEXT_CHILD;
 }
 
 void
 roff_man_reset(struct roff_man *man)
 {
 
 	roff_man_free1(man);
 	roff_man_alloc1(man);
 }
 
 void
 roff_man_free(struct roff_man *man)
 {
 
 	roff_man_free1(man);
 	free(man);
 }
 
 struct roff_man *
 roff_man_alloc(struct roff *roff, struct mparse *parse,
-	const char *defos, int quick)
+	const char *os_s, int quick)
 {
 	struct roff_man *man;
 
 	man = mandoc_calloc(1, sizeof(*man));
 	man->parse = parse;
 	man->roff = roff;
-	man->defos = defos;
+	man->os_s = os_s;
 	man->quick = quick;
 	roff_man_alloc1(man);
 	roff->man = man;
 	return man;
 }
 
 /* --- syntax tree handling ----------------------------------------------- */
 
 struct roff_node *
 roff_node_alloc(struct roff_man *man, int line, int pos,
 	enum roff_type type, int tok)
 {
 	struct roff_node	*n;
 
 	n = mandoc_calloc(1, sizeof(*n));
 	n->line = line;
 	n->pos = pos;
 	n->tok = tok;
 	n->type = type;
 	n->sec = man->lastsec;
 
 	if (man->flags & MDOC_SYNOPSIS)
 		n->flags |= NODE_SYNPRETTY;
 	else
 		n->flags &= ~NODE_SYNPRETTY;
 	if (man->flags & MDOC_NEWLINE)
 		n->flags |= NODE_LINE;
 	man->flags &= ~MDOC_NEWLINE;
 
 	return n;
 }
 
 void
 roff_node_append(struct roff_man *man, struct roff_node *n)
 {
 
 	switch (man->next) {
 	case ROFF_NEXT_SIBLING:
 		if (man->last->next != NULL) {
 			n->next = man->last->next;
 			man->last->next->prev = n;
 		} else
 			man->last->parent->last = n;
 		man->last->next = n;
 		n->prev = man->last;
 		n->parent = man->last->parent;
 		break;
 	case ROFF_NEXT_CHILD:
 		if (man->last->child != NULL) {
 			n->next = man->last->child;
 			man->last->child->prev = n;
 		} else
 			man->last->last = n;
 		man->last->child = n;
 		n->parent = man->last;
 		break;
 	default:
 		abort();
 	}
 	man->last = n;
 
 	switch (n->type) {
 	case ROFFT_HEAD:
 		n->parent->head = n;
 		break;
 	case ROFFT_BODY:
 		if (n->end != ENDBODY_NOT)
 			return;
 		n->parent->body = n;
 		break;
 	case ROFFT_TAIL:
 		n->parent->tail = n;
 		break;
 	default:
 		return;
 	}
 
 	/*
 	 * Copy over the normalised-data pointer of our parent.  Not
 	 * everybody has one, but copying a null pointer is fine.
 	 */
 
 	n->norm = n->parent->norm;
 	assert(n->parent->type == ROFFT_BLOCK);
 }
 
 void
 roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
 {
 	struct roff_node	*n;
 
 	n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
 	n->string = roff_strdup(man->roff, word);
 	roff_node_append(man, n);
 	n->flags |= NODE_VALID | NODE_ENDED;
 	man->next = ROFF_NEXT_SIBLING;
 }
 
 void
 roff_word_append(struct roff_man *man, const char *word)
 {
 	struct roff_node	*n;
 	char			*addstr, *newstr;
 
 	n = man->last;
 	addstr = roff_strdup(man->roff, word);
 	mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
 	free(addstr);
 	free(n->string);
 	n->string = newstr;
 	man->next = ROFF_NEXT_SIBLING;
 }
 
 void
 roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
 {
 	struct roff_node	*n;
 
 	n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
 	roff_node_append(man, n);
 	man->next = ROFF_NEXT_CHILD;
 }
 
 struct roff_node *
 roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
 {
 	struct roff_node	*n;
 
 	n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
 	roff_node_append(man, n);
 	man->next = ROFF_NEXT_CHILD;
 	return n;
 }
 
 struct roff_node *
 roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
 {
 	struct roff_node	*n;
 
 	n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
 	roff_node_append(man, n);
 	man->next = ROFF_NEXT_CHILD;
 	return n;
 }
 
 struct roff_node *
 roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
 {
 	struct roff_node	*n;
 
 	n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
 	roff_node_append(man, n);
 	man->next = ROFF_NEXT_CHILD;
 	return n;
 }
 
-void
-roff_addeqn(struct roff_man *man, const struct eqn *eqn)
+static void
+roff_addtbl(struct roff_man *man, struct tbl_node *tbl)
 {
 	struct roff_node	*n;
+	const struct tbl_span	*span;
 
-	n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
-	n->eqn = eqn;
-	if (eqn->ln > man->last->line)
-		n->flags |= NODE_LINE;
-	roff_node_append(man, n);
-	man->next = ROFF_NEXT_SIBLING;
-}
-
-void
-roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
-{
-	struct roff_node	*n;
-
 	if (man->macroset == MACROSET_MAN)
 		man_breakscope(man, ROFF_TS);
-	n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
-	n->span = tbl;
-	roff_node_append(man, n);
-	n->flags |= NODE_VALID | NODE_ENDED;
-	man->next = ROFF_NEXT_SIBLING;
+	while ((span = tbl_span(tbl)) != NULL) {
+		n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
+		n->span = span;
+		roff_node_append(man, n);
+		n->flags |= NODE_VALID | NODE_ENDED;
+		man->next = ROFF_NEXT_SIBLING;
+	}
 }
 
 void
 roff_node_unlink(struct roff_man *man, struct roff_node *n)
 {
 
 	/* Adjust siblings. */
 
 	if (n->prev)
 		n->prev->next = n->next;
 	if (n->next)
 		n->next->prev = n->prev;
 
 	/* Adjust parent. */
 
 	if (n->parent != NULL) {
 		if (n->parent->child == n)
 			n->parent->child = n->next;
 		if (n->parent->last == n)
 			n->parent->last = n->prev;
 	}
 
 	/* Adjust parse point. */
 
 	if (man == NULL)
 		return;
 	if (man->last == n) {
 		if (n->prev == NULL) {
 			man->last = n->parent;
 			man->next = ROFF_NEXT_CHILD;
 		} else {
 			man->last = n->prev;
 			man->next = ROFF_NEXT_SIBLING;
 		}
 	}
 	if (man->first == n)
 		man->first = NULL;
 }
 
 void
 roff_node_free(struct roff_node *n)
 {
 
 	if (n->args != NULL)
 		mdoc_argv_free(n->args);
 	if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
 		free(n->norm);
+	if (n->eqn != NULL)
+		eqn_box_free(n->eqn);
 	free(n->string);
 	free(n);
 }
 
 void
 roff_node_delete(struct roff_man *man, struct roff_node *n)
 {
 
 	while (n->child != NULL)
 		roff_node_delete(man, n->child);
 	roff_node_unlink(man, n);
 	roff_node_free(n);
 }
 
 void
 deroff(char **dest, const struct roff_node *n)
 {
 	char	*cp;
 	size_t	 sz;
 
 	if (n->type != ROFFT_TEXT) {
 		for (n = n->child; n != NULL; n = n->next)
 			deroff(dest, n);
 		return;
 	}
 
 	/* Skip leading whitespace. */
 
 	for (cp = n->string; *cp != '\0'; cp++) {
 		if (cp[0] == '\\' && cp[1] != '\0' &&
 		    strchr(" %&0^|~", cp[1]) != NULL)
 			cp++;
 		else if ( ! isspace((unsigned char)*cp))
 			break;
 	}
 
 	/* Skip trailing backslash. */
 
 	sz = strlen(cp);
 	if (sz > 0 && cp[sz - 1] == '\\')
 		sz--;
 
 	/* Skip trailing whitespace. */
 
 	for (; sz; sz--)
 		if ( ! isspace((unsigned char)cp[sz-1]))
 			break;
 
 	/* Skip empty strings. */
 
 	if (sz == 0)
 		return;
 
 	if (*dest == NULL) {
 		*dest = mandoc_strndup(cp, sz);
 		return;
 	}
 
 	mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
 	free(*dest);
 	*dest = cp;
 }
 
 /* --- main functions of the roff parser ---------------------------------- */
 
 /*
  * In the current line, expand escape sequences that tend to get
  * used in numerical expressions and conditional requests.
  * Also check the syntax of the remaining escape sequences.
  */
 static enum rofferr
 roff_res(struct roff *r, struct buf *buf, int ln, int pos)
 {
 	char		 ubuf[24]; /* buffer to print the number */
 	const char	*start;	/* start of the string to process */
 	char		*stesc;	/* start of an escape sequence ('\\') */
 	const char	*stnam;	/* start of the name, after "[(*" */
 	const char	*cp;	/* end of the name, e.g. before ']' */
 	const char	*res;	/* the string to be substituted */
 	char		*nbuf;	/* new buffer to copy buf->buf to */
 	size_t		 maxl;  /* expected length of the escape name */
 	size_t		 naml;	/* actual length of the escape name */
 	enum mandoc_esc	 esc;	/* type of the escape sequence */
 	int		 inaml;	/* length returned from mandoc_escape() */
 	int		 expand_count;	/* to avoid infinite loops */
 	int		 npos;	/* position in numeric expression */
 	int		 arg_complete; /* argument not interrupted by eol */
 	int		 done;	/* no more input available */
+	int		 deftype; /* type of definition to paste */
+	int		 rcsid;	/* kind of RCS id seen */
 	char		 term;	/* character terminating the escape */
 
 	/* Search forward for comments. */
 
 	done = 0;
 	start = buf->buf + pos;
 	for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
 		if (stesc[0] != r->escape || stesc[1] == '\0')
 			continue;
 		stesc++;
 		if (*stesc != '"' && *stesc != '#')
 			continue;
+
+		/* Comment found, look for RCS id. */
+
+		rcsid = 0;
+		if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
+			rcsid = 1 << MANDOC_OS_OPENBSD;
+			cp += 8;
+		} else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
+			rcsid = 1 << MANDOC_OS_NETBSD;
+			cp += 7;
+		}
+		if (cp != NULL &&
+		    isalnum((unsigned char)*cp) == 0 &&
+		    strchr(cp, '$') != NULL) {
+			if (r->man->meta.rcsids & rcsid)
+				mandoc_msg(MANDOCERR_RCS_REP, r->parse,
+				    ln, stesc + 1 - buf->buf, stesc + 1);
+			r->man->meta.rcsids |= rcsid;
+		}
+
+		/* Handle trailing whitespace. */
+
 		cp = strchr(stesc--, '\0') - 1;
 		if (*cp == '\n') {
 			done = 1;
 			cp--;
 		}
 		if (*cp == ' ' || *cp == '\t')
 			mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
 			    ln, cp - buf->buf, NULL);
 		while (stesc > start && stesc[-1] == ' ')
 			stesc--;
 		*stesc = '\0';
 		break;
 	}
 	if (stesc == start)
 		return ROFF_CONT;
 	stesc--;
 
 	/* Notice the end of the input. */
 
 	if (*stesc == '\n') {
 		*stesc-- = '\0';
 		done = 1;
 	}
 
 	expand_count = 0;
 	while (stesc >= start) {
 
 		/* Search backwards for the next backslash. */
 
 		if (*stesc != r->escape) {
 			if (*stesc == '\\') {
 				*stesc = '\0';
 				buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
 				    buf->buf, stesc + 1) + 1;
 				start = nbuf + pos;
 				stesc = nbuf + (stesc - buf->buf);
 				free(buf->buf);
 				buf->buf = nbuf;
 			}
 			stesc--;
 			continue;
 		}
 
 		/* If it is escaped, skip it. */
 
 		for (cp = stesc - 1; cp >= start; cp--)
 			if (*cp != r->escape)
 				break;
 
 		if ((stesc - cp) % 2 == 0) {
 			while (stesc > cp)
 				*stesc-- = '\\';
 			continue;
 		} else if (stesc[1] != '\0') {
 			*stesc = '\\';
 		} else {
 			*stesc-- = '\0';
 			if (done)
 				continue;
 			else
 				return ROFF_APPEND;
 		}
 
 		/* Decide whether to expand or to check only. */
 
 		term = '\0';
 		cp = stesc + 1;
 		switch (*cp) {
 		case '*':
 			res = NULL;
 			break;
 		case 'B':
 		case 'w':
 			term = cp[1];
 			/* FALLTHROUGH */
 		case 'n':
 			res = ubuf;
 			break;
 		default:
 			esc = mandoc_escape(&cp, &stnam, &inaml);
 			if (esc == ESCAPE_ERROR ||
 			    (esc == ESCAPE_SPECIAL &&
 			     mchars_spec2cp(stnam, inaml) < 0))
 				mandoc_vmsg(MANDOCERR_ESC_BAD,
 				    r->parse, ln, (int)(stesc - buf->buf),
 				    "%.*s", (int)(cp - stesc), stesc);
 			stesc--;
 			continue;
 		}
 
 		if (EXPAND_LIMIT < ++expand_count) {
 			mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
 			    ln, (int)(stesc - buf->buf), NULL);
 			return ROFF_IGN;
 		}
 
 		/*
 		 * The third character decides the length
 		 * of the name of the string or register.
 		 * Save a pointer to the name.
 		 */
 
 		if (term == '\0') {
 			switch (*++cp) {
 			case '\0':
 				maxl = 0;
 				break;
 			case '(':
 				cp++;
 				maxl = 2;
 				break;
 			case '[':
 				cp++;
 				term = ']';
 				maxl = 0;
 				break;
 			default:
 				maxl = 1;
 				break;
 			}
 		} else {
 			cp += 2;
 			maxl = 0;
 		}
 		stnam = cp;
 
 		/* Advance to the end of the name. */
 
 		naml = 0;
 		arg_complete = 1;
 		while (maxl == 0 || naml < maxl) {
 			if (*cp == '\0') {
 				mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
 				    ln, (int)(stesc - buf->buf), stesc);
 				arg_complete = 0;
 				break;
 			}
 			if (maxl == 0 && *cp == term) {
 				cp++;
 				break;
 			}
 			if (*cp++ != '\\' || stesc[1] != 'w') {
 				naml++;
 				continue;
 			}
 			switch (mandoc_escape(&cp, NULL, NULL)) {
 			case ESCAPE_SPECIAL:
 			case ESCAPE_UNICODE:
 			case ESCAPE_NUMBERED:
 			case ESCAPE_OVERSTRIKE:
 				naml++;
 				break;
 			default:
 				break;
 			}
 		}
 
 		/*
 		 * Retrieve the replacement string; if it is
 		 * undefined, resume searching for escapes.
 		 */
 
 		switch (stesc[1]) {
 		case '*':
-			if (arg_complete)
-				res = roff_getstrn(r, stnam, naml);
+			if (arg_complete) {
+				deftype = ROFFDEF_USER | ROFFDEF_PRE;
+				res = roff_getstrn(r, stnam, naml, &deftype);
+			}
 			break;
 		case 'B':
 			npos = 0;
 			ubuf[0] = arg_complete &&
 			    roff_evalnum(r, ln, stnam, &npos,
 			      NULL, ROFFNUM_SCALE) &&
 			    stnam + npos + 1 == cp ? '1' : '0';
 			ubuf[1] = '\0';
 			break;
 		case 'n':
 			if (arg_complete)
 				(void)snprintf(ubuf, sizeof(ubuf), "%d",
 				    roff_getregn(r, stnam, naml));
 			else
 				ubuf[0] = '\0';
 			break;
 		case 'w':
 			/* use even incomplete args */
 			(void)snprintf(ubuf, sizeof(ubuf), "%d",
 			    24 * (int)naml);
 			break;
 		}
 
 		if (res == NULL) {
 			mandoc_vmsg(MANDOCERR_STR_UNDEF,
 			    r->parse, ln, (int)(stesc - buf->buf),
 			    "%.*s", (int)naml, stnam);
 			res = "";
 		} else if (buf->sz + strlen(res) > SHRT_MAX) {
 			mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
 			    ln, (int)(stesc - buf->buf), NULL);
 			return ROFF_IGN;
 		}
 
 		/* Replace the escape sequence by the string. */
 
 		*stesc = '\0';
 		buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
 		    buf->buf, res, cp) + 1;
 
 		/* Prepare for the next replacement. */
 
 		start = nbuf + pos;
 		stesc = nbuf + (stesc - buf->buf) + strlen(res);
 		free(buf->buf);
 		buf->buf = nbuf;
 	}
 	return ROFF_CONT;
 }
 
 /*
  * Process text streams.
  */
 static enum rofferr
 roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
 {
 	size_t		 sz;
 	const char	*start;
 	char		*p;
 	int		 isz;
 	enum mandoc_esc	 esc;
 
 	/* Spring the input line trap. */
 
 	if (roffit_lines == 1) {
 		isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
 		free(buf->buf);
 		buf->buf = p;
 		buf->sz = isz + 1;
 		*offs = 0;
 		free(roffit_macro);
 		roffit_lines = 0;
 		return ROFF_REPARSE;
 	} else if (roffit_lines > 1)
 		--roffit_lines;
 
 	if (roffce_node != NULL && buf->buf[pos] != '\0') {
 		if (roffce_lines < 1) {
 			r->man->last = roffce_node;
 			r->man->next = ROFF_NEXT_SIBLING;
 			roffce_lines = 0;
 			roffce_node = NULL;
 		} else
 			roffce_lines--;
 	}
 
 	/* Convert all breakable hyphens into ASCII_HYPH. */
 
 	start = p = buf->buf + pos;
 
 	while (*p != '\0') {
 		sz = strcspn(p, "-\\");
 		p += sz;
 
 		if (*p == '\0')
 			break;
 
 		if (*p == '\\') {
 			/* Skip over escapes. */
 			p++;
 			esc = mandoc_escape((const char **)&p, NULL, NULL);
 			if (esc == ESCAPE_ERROR)
 				break;
 			while (*p == '-')
 				p++;
 			continue;
 		} else if (p == start) {
 			p++;
 			continue;
 		}
 
 		if (isalpha((unsigned char)p[-1]) &&
 		    isalpha((unsigned char)p[1]))
 			*p = ASCII_HYPH;
 		p++;
 	}
 	return ROFF_CONT;
 }
 
 enum rofferr
 roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
 {
 	enum roff_tok	 t;
 	enum rofferr	 e;
 	int		 pos;	/* parse point */
 	int		 spos;	/* saved parse point for messages */
 	int		 ppos;	/* original offset in buf->buf */
 	int		 ctl;	/* macro line (boolean) */
 
 	ppos = pos = *offs;
 
 	/* Handle in-line equation delimiters. */
 
 	if (r->tbl == NULL &&
 	    r->last_eqn != NULL && r->last_eqn->delim &&
 	    (r->eqn == NULL || r->eqn_inline)) {
 		e = roff_eqndelim(r, buf, pos);
 		if (e == ROFF_REPARSE)
 			return e;
 		assert(e == ROFF_CONT);
 	}
 
 	/* Expand some escape sequences. */
 
 	e = roff_res(r, buf, ln, pos);
 	if (e == ROFF_IGN || e == ROFF_APPEND)
 		return e;
 	assert(e == ROFF_CONT);
 
 	ctl = roff_getcontrol(r, buf->buf, &pos);
 
 	/*
 	 * First, if a scope is open and we're not a macro, pass the
 	 * text through the macro's filter.
 	 * Equations process all content themselves.
 	 * Tables process almost all content themselves, but we want
 	 * to warn about macros before passing it there.
 	 */
 
 	if (r->last != NULL && ! ctl) {
 		t = r->last->tok;
 		e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
 		if (e == ROFF_IGN)
 			return e;
 		assert(e == ROFF_CONT);
 	}
-	if (r->eqn != NULL)
-		return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
-	if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
-		return tbl_read(r->tbl, ln, buf->buf, ppos);
+	if (r->eqn != NULL && strncmp(buf->buf + ppos, ".EN", 3)) {
+		eqn_read(r->eqn, buf->buf + ppos);
+		return ROFF_IGN;
+	}
+	if (r->tbl != NULL && (ctl == 0 || buf->buf[pos] == '\0')) {
+		tbl_read(r->tbl, ln, buf->buf, ppos);
+		roff_addtbl(r->man, r->tbl);
+		return ROFF_IGN;
+	}
 	if ( ! ctl)
 		return roff_parsetext(r, buf, pos, offs);
 
 	/* Skip empty request lines. */
 
 	if (buf->buf[pos] == '"') {
 		mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
 		    ln, pos, NULL);
 		return ROFF_IGN;
 	} else if (buf->buf[pos] == '\0')
 		return ROFF_IGN;
 
 	/*
 	 * If a scope is open, go to the child handler for that macro,
 	 * as it may want to preprocess before doing anything with it.
 	 * Don't do so if an equation is open.
 	 */
 
 	if (r->last) {
 		t = r->last->tok;
 		return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
 	}
 
 	/* No scope is open.  This is a new request or macro. */
 
 	spos = pos;
 	t = roff_parse(r, buf->buf, &pos, ln, ppos);
 
 	/* Tables ignore most macros. */
 
-	if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS)) {
+	if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
+	    t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
 		mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
 		    ln, pos, buf->buf + spos);
-		if (t == ROFF_TS)
+		if (t != TOKEN_NONE)
 			return ROFF_IGN;
 		while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
 			pos++;
 		while (buf->buf[pos] == ' ')
 			pos++;
-		return tbl_read(r->tbl, ln, buf->buf, pos);
+		tbl_read(r->tbl, ln, buf->buf, pos);
+		roff_addtbl(r->man, r->tbl);
+		return ROFF_IGN;
 	}
 
 	/* For now, let high level macros abort .ce mode. */
 
 	if (ctl && roffce_node != NULL &&
-	    (t == TOKEN_NONE || t == ROFF_EQ || t == ROFF_TS)) {
+	    (t == TOKEN_NONE || t == ROFF_Dd || t == ROFF_EQ ||
+	     t == ROFF_TH || t == ROFF_TS)) {
 		r->man->last = roffce_node;
 		r->man->next = ROFF_NEXT_SIBLING;
 		roffce_lines = 0;
 		roffce_node = NULL;
 	}
 
 	/*
 	 * This is neither a roff request nor a user-defined macro.
 	 * Let the standard macro set parsers handle it.
 	 */
 
 	if (t == TOKEN_NONE)
 		return ROFF_CONT;
 
 	/* Execute a roff request or a user defined macro. */
 
 	return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
 }
 
 void
 roff_endparse(struct roff *r)
 {
-
-	if (r->last)
+	if (r->last != NULL)
 		mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
 		    r->last->line, r->last->col,
 		    roff_name[r->last->tok]);
 
-	if (r->eqn) {
+	if (r->eqn != NULL) {
 		mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
-		    r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
-		eqn_end(&r->eqn);
+		    r->eqn->node->line, r->eqn->node->pos, "EQ");
+		eqn_parse(r->eqn);
+		r->eqn = NULL;
 	}
 
-	if (r->tbl) {
+	if (r->tbl != NULL) {
 		mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
 		    r->tbl->line, r->tbl->pos, "TS");
-		tbl_end(&r->tbl);
+		tbl_end(r->tbl);
+		r->tbl = NULL;
 	}
 }
 
 /*
  * Parse a roff node's type from the input buffer.  This must be in the
  * form of ".foo xxx" in the usual way.
  */
 static enum roff_tok
 roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
 {
 	char		*cp;
 	const char	*mac;
 	size_t		 maclen;
+	int		 deftype;
 	enum roff_tok	 t;
 
 	cp = buf + *pos;
 
 	if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
 		return TOKEN_NONE;
 
 	mac = cp;
 	maclen = roff_getname(r, &cp, ln, ppos);
 
-	t = (r->current_string = roff_getstrn(r, mac, maclen)) ?
-	    ROFF_USERDEF :
-	    (r->current_string = roff_getrenn(r, mac, maclen)) ?
-	    ROFF_RENAMED : roffhash_find(r->reqtab, mac, maclen);
-
+	deftype = ROFFDEF_USER | ROFFDEF_REN;
+	r->current_string = roff_getstrn(r, mac, maclen, &deftype);
+	switch (deftype) {
+	case ROFFDEF_USER:
+		t = ROFF_USERDEF;
+		break;
+	case ROFFDEF_REN:
+		t = ROFF_RENAMED;
+		break;
+	default:
+		t = roffhash_find(r->reqtab, mac, maclen);
+		break;
+	}
 	if (t != TOKEN_NONE)
 		*pos = cp - buf;
-
 	return t;
 }
 
 /* --- handling of request blocks ----------------------------------------- */
 
 static enum rofferr
 roff_cblock(ROFF_ARGS)
 {
 
 	/*
 	 * A block-close `..' should only be invoked as a child of an
 	 * ignore macro, otherwise raise a warning and just ignore it.
 	 */
 
 	if (r->last == NULL) {
 		mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
 		    ln, ppos, "..");
 		return ROFF_IGN;
 	}
 
 	switch (r->last->tok) {
 	case ROFF_am:
 		/* ROFF_am1 is remapped to ROFF_am in roff_block(). */
 	case ROFF_ami:
 	case ROFF_de:
 		/* ROFF_de1 is remapped to ROFF_de in roff_block(). */
 	case ROFF_dei:
 	case ROFF_ig:
 		break;
 	default:
 		mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
 		    ln, ppos, "..");
 		return ROFF_IGN;
 	}
 
 	if (buf->buf[pos] != '\0')
 		mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
 		    ".. %s", buf->buf + pos);
 
 	roffnode_pop(r);
 	roffnode_cleanscope(r);
 	return ROFF_IGN;
 
 }
 
 static void
 roffnode_cleanscope(struct roff *r)
 {
 
 	while (r->last) {
 		if (--r->last->endspan != 0)
 			break;
 		roffnode_pop(r);
 	}
 }
 
 static void
 roff_ccond(struct roff *r, int ln, int ppos)
 {
 
 	if (NULL == r->last) {
 		mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
 		    ln, ppos, "\\}");
 		return;
 	}
 
 	switch (r->last->tok) {
 	case ROFF_el:
 	case ROFF_ie:
 	case ROFF_if:
 		break;
 	default:
 		mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
 		    ln, ppos, "\\}");
 		return;
 	}
 
 	if (r->last->endspan > -1) {
 		mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
 		    ln, ppos, "\\}");
 		return;
 	}
 
 	roffnode_pop(r);
 	roffnode_cleanscope(r);
 	return;
 }
 
 static enum rofferr
 roff_block(ROFF_ARGS)
 {
-	const char	*name;
-	char		*iname, *cp;
-	size_t		 namesz;
+	const char	*name, *value;
+	char		*call, *cp, *iname, *rname;
+	size_t		 csz, namesz, rsz;
+	int		 deftype;
 
 	/* Ignore groff compatibility mode for now. */
 
 	if (tok == ROFF_de1)
 		tok = ROFF_de;
 	else if (tok == ROFF_dei1)
 		tok = ROFF_dei;
 	else if (tok == ROFF_am1)
 		tok = ROFF_am;
 	else if (tok == ROFF_ami1)
 		tok = ROFF_ami;
 
 	/* Parse the macro name argument. */
 
 	cp = buf->buf + pos;
 	if (tok == ROFF_ig) {
 		iname = NULL;
 		namesz = 0;
 	} else {
 		iname = cp;
 		namesz = roff_getname(r, &cp, ln, ppos);
 		iname[namesz] = '\0';
 	}
 
 	/* Resolve the macro name argument if it is indirect. */
 
 	if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
-		if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
+		deftype = ROFFDEF_USER;
+		name = roff_getstrn(r, iname, namesz, &deftype);
+		if (name == NULL) {
 			mandoc_vmsg(MANDOCERR_STR_UNDEF,
 			    r->parse, ln, (int)(iname - buf->buf),
 			    "%.*s", (int)namesz, iname);
 			namesz = 0;
 		} else
 			namesz = strlen(name);
 	} else
 		name = iname;
 
 	if (namesz == 0 && tok != ROFF_ig) {
 		mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
 		    ln, ppos, roff_name[tok]);
 		return ROFF_IGN;
 	}
 
 	roffnode_push(r, tok, name, ln, ppos);
 
 	/*
 	 * At the beginning of a `de' macro, clear the existing string
 	 * with the same name, if there is one.  New content will be
 	 * appended from roff_block_text() in multiline mode.
 	 */
 
-	if (tok == ROFF_de || tok == ROFF_dei)
+	if (tok == ROFF_de || tok == ROFF_dei) {
 		roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
+		roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
+	} else if (tok == ROFF_am || tok == ROFF_ami) {
+		deftype = ROFFDEF_ANY;
+		value = roff_getstrn(r, iname, namesz, &deftype);
+		switch (deftype) {  /* Before appending, ... */
+		case ROFFDEF_PRE: /* copy predefined to user-defined. */
+			roff_setstrn(&r->strtab, name, namesz,
+			    value, strlen(value), 0);
+			break;
+		case ROFFDEF_REN: /* call original standard macro. */
+			csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
+			    (int)strlen(value), value);
+			roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
+			roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
+			free(call);
+			break;
+		case ROFFDEF_STD:  /* rename and call standard macro. */
+			rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
+			roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
+			csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
+			    (int)rsz, rname);
+			roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
+			free(call);
+			free(rname);
+			break;
+		default:
+			break;
+		}
+	}
 
 	if (*cp == '\0')
 		return ROFF_IGN;
 
 	/* Get the custom end marker. */
 
 	iname = cp;
 	namesz = roff_getname(r, &cp, ln, ppos);
 
 	/* Resolve the end marker if it is indirect. */
 
 	if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
-		if ((name = roff_getstrn(r, iname, namesz)) == NULL) {
+		deftype = ROFFDEF_USER;
+		name = roff_getstrn(r, iname, namesz, &deftype);
+		if (name == NULL) {
 			mandoc_vmsg(MANDOCERR_STR_UNDEF,
 			    r->parse, ln, (int)(iname - buf->buf),
 			    "%.*s", (int)namesz, iname);
 			namesz = 0;
 		} else
 			namesz = strlen(name);
 	} else
 		name = iname;
 
 	if (namesz)
 		r->last->end = mandoc_strndup(name, namesz);
 
 	if (*cp != '\0')
 		mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
 		    ln, pos, ".%s ... %s", roff_name[tok], cp);
 
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_block_sub(ROFF_ARGS)
 {
 	enum roff_tok	t;
 	int		i, j;
 
 	/*
 	 * First check whether a custom macro exists at this level.  If
 	 * it does, then check against it.  This is some of groff's
 	 * stranger behaviours.  If we encountered a custom end-scope
 	 * tag and that tag also happens to be a "real" macro, then we
 	 * need to try interpreting it again as a real macro.  If it's
 	 * not, then return ignore.  Else continue.
 	 */
 
 	if (r->last->end) {
 		for (i = pos, j = 0; r->last->end[j]; j++, i++)
 			if (buf->buf[i] != r->last->end[j])
 				break;
 
 		if (r->last->end[j] == '\0' &&
 		    (buf->buf[i] == '\0' ||
 		     buf->buf[i] == ' ' ||
 		     buf->buf[i] == '\t')) {
 			roffnode_pop(r);
 			roffnode_cleanscope(r);
 
 			while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
 				i++;
 
 			pos = i;
 			if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
 			    TOKEN_NONE)
 				return ROFF_RERUN;
 			return ROFF_IGN;
 		}
 	}
 
 	/*
 	 * If we have no custom end-query or lookup failed, then try
 	 * pulling it out of the hashtable.
 	 */
 
 	t = roff_parse(r, buf->buf, &pos, ln, ppos);
 
 	if (t != ROFF_cblock) {
 		if (tok != ROFF_ig)
 			roff_setstr(r, r->last->name, buf->buf + ppos, 2);
 		return ROFF_IGN;
 	}
 
 	return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
 }
 
 static enum rofferr
 roff_block_text(ROFF_ARGS)
 {
 
 	if (tok != ROFF_ig)
 		roff_setstr(r, r->last->name, buf->buf + pos, 2);
 
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_cond_sub(ROFF_ARGS)
 {
 	enum roff_tok	 t;
 	char		*ep;
 	int		 rr;
 
 	rr = r->last->rule;
 	roffnode_cleanscope(r);
-	t = roff_parse(r, buf->buf, &pos, ln, ppos);
 
 	/*
-	 * Fully handle known macros when they are structurally
-	 * required or when the conditional evaluated to true.
-	 */
-
-	if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
-		return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
-
-	/*
 	 * If `\}' occurs on a macro line without a preceding macro,
 	 * drop the line completely.
 	 */
 
 	ep = buf->buf + pos;
 	if (ep[0] == '\\' && ep[1] == '}')
 		rr = 0;
 
 	/* Always check for the closing delimiter `\}'. */
 
 	while ((ep = strchr(ep, '\\')) != NULL) {
-		if (*(++ep) == '}') {
-			*ep = '&';
-			roff_ccond(r, ln, ep - buf->buf - 1);
-		}
-		if (*ep != '\0')
+		switch (ep[1]) {
+		case '}':
+			memmove(ep, ep + 2, strlen(ep + 2) + 1);
+			roff_ccond(r, ln, ep - buf->buf);
+			break;
+		case '\0':
 			++ep;
+			break;
+		default:
+			ep += 2;
+			break;
+		}
 	}
-	return rr ? ROFF_CONT : ROFF_IGN;
+
+	/*
+	 * Fully handle known macros when they are structurally
+	 * required or when the conditional evaluated to true.
+	 */
+
+	t = roff_parse(r, buf->buf, &pos, ln, ppos);
+	return t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT)
+	    ? (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs) : rr
+	    ? ROFF_CONT : ROFF_IGN;
 }
 
 static enum rofferr
 roff_cond_text(ROFF_ARGS)
 {
 	char		*ep;
 	int		 rr;
 
 	rr = r->last->rule;
 	roffnode_cleanscope(r);
 
 	ep = buf->buf + pos;
 	while ((ep = strchr(ep, '\\')) != NULL) {
 		if (*(++ep) == '}') {
 			*ep = '&';
 			roff_ccond(r, ln, ep - buf->buf - 1);
 		}
 		if (*ep != '\0')
 			++ep;
 	}
 	return rr ? ROFF_CONT : ROFF_IGN;
 }
 
 /* --- handling of numeric and conditional expressions -------------------- */
 
 /*
  * Parse a single signed integer number.  Stop at the first non-digit.
  * If there is at least one digit, return success and advance the
  * parse point, else return failure and let the parse point unchanged.
  * Ignore overflows, treat them just like the C language.
  */
 static int
 roff_getnum(const char *v, int *pos, int *res, int flags)
 {
 	int	 myres, scaled, n, p;
 
 	if (NULL == res)
 		res = &myres;
 
 	p = *pos;
 	n = v[p] == '-';
 	if (n || v[p] == '+')
 		p++;
 
 	if (flags & ROFFNUM_WHITE)
 		while (isspace((unsigned char)v[p]))
 			p++;
 
 	for (*res = 0; isdigit((unsigned char)v[p]); p++)
 		*res = 10 * *res + v[p] - '0';
 	if (p == *pos + n)
 		return 0;
 
 	if (n)
 		*res = -*res;
 
 	/* Each number may be followed by one optional scaling unit. */
 
 	switch (v[p]) {
 	case 'f':
 		scaled = *res * 65536;
 		break;
 	case 'i':
 		scaled = *res * 240;
 		break;
 	case 'c':
 		scaled = *res * 240 / 2.54;
 		break;
 	case 'v':
 	case 'P':
 		scaled = *res * 40;
 		break;
 	case 'm':
 	case 'n':
 		scaled = *res * 24;
 		break;
 	case 'p':
 		scaled = *res * 10 / 3;
 		break;
 	case 'u':
 		scaled = *res;
 		break;
 	case 'M':
 		scaled = *res * 6 / 25;
 		break;
 	default:
 		scaled = *res;
 		p--;
 		break;
 	}
 	if (flags & ROFFNUM_SCALE)
 		*res = scaled;
 
 	*pos = p + 1;
 	return 1;
 }
 
 /*
  * Evaluate a string comparison condition.
  * The first character is the delimiter.
  * Succeed if the string up to its second occurrence
  * matches the string up to its third occurence.
  * Advance the cursor after the third occurrence
  * or lacking that, to the end of the line.
  */
 static int
 roff_evalstrcond(const char *v, int *pos)
 {
 	const char	*s1, *s2, *s3;
 	int		 match;
 
 	match = 0;
 	s1 = v + *pos;		/* initial delimiter */
 	s2 = s1 + 1;		/* for scanning the first string */
 	s3 = strchr(s2, *s1);	/* for scanning the second string */
 
 	if (NULL == s3)		/* found no middle delimiter */
 		goto out;
 
 	while ('\0' != *++s3) {
 		if (*s2 != *s3) {  /* mismatch */
 			s3 = strchr(s3, *s1);
 			break;
 		}
 		if (*s3 == *s1) {  /* found the final delimiter */
 			match = 1;
 			break;
 		}
 		s2++;
 	}
 
 out:
 	if (NULL == s3)
 		s3 = strchr(s2, '\0');
 	else if (*s3 != '\0')
 		s3++;
 	*pos = s3 - v;
 	return match;
 }
 
 /*
  * Evaluate an optionally negated single character, numerical,
  * or string condition.
  */
 static int
 roff_evalcond(struct roff *r, int ln, char *v, int *pos)
 {
 	char	*cp, *name;
 	size_t	 sz;
-	int	 number, savepos, wanttrue;
+	int	 deftype, number, savepos, istrue, wanttrue;
 
 	if ('!' == v[*pos]) {
 		wanttrue = 0;
 		(*pos)++;
 	} else
 		wanttrue = 1;
 
 	switch (v[*pos]) {
 	case '\0':
 		return 0;
 	case 'n':
 	case 'o':
 		(*pos)++;
 		return wanttrue;
 	case 'c':
-	case 'd':
 	case 'e':
 	case 't':
 	case 'v':
 		(*pos)++;
 		return !wanttrue;
+	case 'd':
 	case 'r':
-		cp = name = v + ++*pos;
-		sz = roff_getname(r, &cp, ln, *pos);
+		cp = v + *pos + 1;
+		while (*cp == ' ')
+			cp++;
+		name = cp;
+		sz = roff_getname(r, &cp, ln, cp - v);
+		if (sz == 0)
+			istrue = 0;
+		else if (v[*pos] == 'r')
+			istrue = roff_hasregn(r, name, sz);
+		else {
+			deftype = ROFFDEF_ANY;
+		        roff_getstrn(r, name, sz, &deftype);
+			istrue = !!deftype;
+		}
 		*pos = cp - v;
-		return (sz && roff_hasregn(r, name, sz)) == wanttrue;
+		return istrue == wanttrue;
 	default:
 		break;
 	}
 
 	savepos = *pos;
 	if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
 		return (number > 0) == wanttrue;
 	else if (*pos == savepos)
 		return roff_evalstrcond(v, pos) == wanttrue;
 	else
 		return 0;
 }
 
 static enum rofferr
 roff_line_ignore(ROFF_ARGS)
 {
 
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_insec(ROFF_ARGS)
 {
 
 	mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
 	    ln, ppos, roff_name[tok]);
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_unsupp(ROFF_ARGS)
 {
 
 	mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
 	    ln, ppos, roff_name[tok]);
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_cond(ROFF_ARGS)
 {
 
 	roffnode_push(r, tok, NULL, ln, ppos);
 
 	/*
 	 * An `.el' has no conditional body: it will consume the value
 	 * of the current rstack entry set in prior `ie' calls or
 	 * defaults to DENY.
 	 *
 	 * If we're not an `el', however, then evaluate the conditional.
 	 */
 
 	r->last->rule = tok == ROFF_el ?
 	    (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
 	    roff_evalcond(r, ln, buf->buf, &pos);
 
 	/*
 	 * An if-else will put the NEGATION of the current evaluated
 	 * conditional into the stack of rules.
 	 */
 
 	if (tok == ROFF_ie) {
 		if (r->rstackpos + 1 == r->rstacksz) {
 			r->rstacksz += 16;
 			r->rstack = mandoc_reallocarray(r->rstack,
 			    r->rstacksz, sizeof(int));
 		}
 		r->rstack[++r->rstackpos] = !r->last->rule;
 	}
 
 	/* If the parent has false as its rule, then so do we. */
 
 	if (r->last->parent && !r->last->parent->rule)
 		r->last->rule = 0;
 
 	/*
 	 * Determine scope.
 	 * If there is nothing on the line after the conditional,
 	 * not even whitespace, use next-line scope.
 	 */
 
 	if (buf->buf[pos] == '\0') {
 		r->last->endspan = 2;
 		goto out;
 	}
 
 	while (buf->buf[pos] == ' ')
 		pos++;
 
 	/* An opening brace requests multiline scope. */
 
 	if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
 		r->last->endspan = -1;
 		pos += 2;
 		while (buf->buf[pos] == ' ')
 			pos++;
 		goto out;
 	}
 
 	/*
 	 * Anything else following the conditional causes
 	 * single-line scope.  Warn if the scope contains
 	 * nothing but trailing whitespace.
 	 */
 
 	if (buf->buf[pos] == '\0')
 		mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
 		    ln, ppos, roff_name[tok]);
 
 	r->last->endspan = 1;
 
 out:
 	*offs = pos;
 	return ROFF_RERUN;
 }
 
 static enum rofferr
 roff_ds(ROFF_ARGS)
 {
 	char		*string;
 	const char	*name;
 	size_t		 namesz;
 
 	/* Ignore groff compatibility mode for now. */
 
 	if (tok == ROFF_ds1)
 		tok = ROFF_ds;
 	else if (tok == ROFF_as1)
 		tok = ROFF_as;
 
 	/*
 	 * The first word is the name of the string.
 	 * If it is empty or terminated by an escape sequence,
 	 * abort the `ds' request without defining anything.
 	 */
 
 	name = string = buf->buf + pos;
 	if (*name == '\0')
 		return ROFF_IGN;
 
 	namesz = roff_getname(r, &string, ln, pos);
 	if (name[namesz] == '\\')
 		return ROFF_IGN;
 
 	/* Read past the initial double-quote, if any. */
 	if (*string == '"')
 		string++;
 
 	/* The rest is the value. */
 	roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
 	    ROFF_as == tok);
+	roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
 	return ROFF_IGN;
 }
 
 /*
  * Parse a single operator, one or two characters long.
  * If the operator is recognized, return success and advance the
  * parse point, else return failure and let the parse point unchanged.
  */
 static int
 roff_getop(const char *v, int *pos, char *res)
 {
 
 	*res = v[*pos];
 
 	switch (*res) {
 	case '+':
 	case '-':
 	case '*':
 	case '/':
 	case '%':
 	case '&':
 	case ':':
 		break;
 	case '<':
 		switch (v[*pos + 1]) {
 		case '=':
 			*res = 'l';
 			(*pos)++;
 			break;
 		case '>':
 			*res = '!';
 			(*pos)++;
 			break;
 		case '?':
 			*res = 'i';
 			(*pos)++;
 			break;
 		default:
 			break;
 		}
 		break;
 	case '>':
 		switch (v[*pos + 1]) {
 		case '=':
 			*res = 'g';
 			(*pos)++;
 			break;
 		case '?':
 			*res = 'a';
 			(*pos)++;
 			break;
 		default:
 			break;
 		}
 		break;
 	case '=':
 		if ('=' == v[*pos + 1])
 			(*pos)++;
 		break;
 	default:
 		return 0;
 	}
 	(*pos)++;
 
 	return *res;
 }
 
 /*
  * Evaluate either a parenthesized numeric expression
  * or a single signed integer number.
  */
 static int
 roff_evalpar(struct roff *r, int ln,
 	const char *v, int *pos, int *res, int flags)
 {
 
 	if ('(' != v[*pos])
 		return roff_getnum(v, pos, res, flags);
 
 	(*pos)++;
 	if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
 		return 0;
 
 	/*
 	 * Omission of the closing parenthesis
 	 * is an error in validation mode,
 	 * but ignored in evaluation mode.
 	 */
 
 	if (')' == v[*pos])
 		(*pos)++;
 	else if (NULL == res)
 		return 0;
 
 	return 1;
 }
 
 /*
  * Evaluate a complete numeric expression.
  * Proceed left to right, there is no concept of precedence.
  */
 static int
 roff_evalnum(struct roff *r, int ln, const char *v,
 	int *pos, int *res, int flags)
 {
 	int		 mypos, operand2;
 	char		 operator;
 
 	if (NULL == pos) {
 		mypos = 0;
 		pos = &mypos;
 	}
 
 	if (flags & ROFFNUM_WHITE)
 		while (isspace((unsigned char)v[*pos]))
 			(*pos)++;
 
 	if ( ! roff_evalpar(r, ln, v, pos, res, flags))
 		return 0;
 
 	while (1) {
 		if (flags & ROFFNUM_WHITE)
 			while (isspace((unsigned char)v[*pos]))
 				(*pos)++;
 
 		if ( ! roff_getop(v, pos, &operator))
 			break;
 
 		if (flags & ROFFNUM_WHITE)
 			while (isspace((unsigned char)v[*pos]))
 				(*pos)++;
 
 		if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
 			return 0;
 
 		if (flags & ROFFNUM_WHITE)
 			while (isspace((unsigned char)v[*pos]))
 				(*pos)++;
 
 		if (NULL == res)
 			continue;
 
 		switch (operator) {
 		case '+':
 			*res += operand2;
 			break;
 		case '-':
 			*res -= operand2;
 			break;
 		case '*':
 			*res *= operand2;
 			break;
 		case '/':
 			if (operand2 == 0) {
 				mandoc_msg(MANDOCERR_DIVZERO,
 					r->parse, ln, *pos, v);
 				*res = 0;
 				break;
 			}
 			*res /= operand2;
 			break;
 		case '%':
 			if (operand2 == 0) {
 				mandoc_msg(MANDOCERR_DIVZERO,
 					r->parse, ln, *pos, v);
 				*res = 0;
 				break;
 			}
 			*res %= operand2;
 			break;
 		case '<':
 			*res = *res < operand2;
 			break;
 		case '>':
 			*res = *res > operand2;
 			break;
 		case 'l':
 			*res = *res <= operand2;
 			break;
 		case 'g':
 			*res = *res >= operand2;
 			break;
 		case '=':
 			*res = *res == operand2;
 			break;
 		case '!':
 			*res = *res != operand2;
 			break;
 		case '&':
 			*res = *res && operand2;
 			break;
 		case ':':
 			*res = *res || operand2;
 			break;
 		case 'i':
 			if (operand2 < *res)
 				*res = operand2;
 			break;
 		case 'a':
 			if (operand2 > *res)
 				*res = operand2;
 			break;
 		default:
 			abort();
 		}
 	}
 	return 1;
 }
 
 /* --- register management ------------------------------------------------ */
 
 void
 roff_setreg(struct roff *r, const char *name, int val, char sign)
 {
 	struct roffreg	*reg;
 
 	/* Search for an existing register with the same name. */
 	reg = r->regtab;
 
 	while (reg && strcmp(name, reg->key.p))
 		reg = reg->next;
 
 	if (NULL == reg) {
 		/* Create a new register. */
 		reg = mandoc_malloc(sizeof(struct roffreg));
 		reg->key.p = mandoc_strdup(name);
 		reg->key.sz = strlen(name);
 		reg->val = 0;
 		reg->next = r->regtab;
 		r->regtab = reg;
 	}
 
 	if ('+' == sign)
 		reg->val += val;
 	else if ('-' == sign)
 		reg->val -= val;
 	else
 		reg->val = val;
 }
 
 /*
  * Handle some predefined read-only number registers.
  * For now, return -1 if the requested register is not predefined;
  * in case a predefined read-only register having the value -1
  * were to turn up, another special value would have to be chosen.
  */
 static int
 roff_getregro(const struct roff *r, const char *name)
 {
 
 	switch (*name) {
 	case '$':  /* Number of arguments of the last macro evaluated. */
 		return r->argc;
 	case 'A':  /* ASCII approximation mode is always off. */
 		return 0;
 	case 'g':  /* Groff compatibility mode is always on. */
 		return 1;
 	case 'H':  /* Fixed horizontal resolution. */
 		return 24;
 	case 'j':  /* Always adjust left margin only. */
 		return 0;
 	case 'T':  /* Some output device is always defined. */
 		return 1;
 	case 'V':  /* Fixed vertical resolution. */
 		return 40;
 	default:
 		return -1;
 	}
 }
 
 int
 roff_getreg(const struct roff *r, const char *name)
 {
 	struct roffreg	*reg;
 	int		 val;
 
 	if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
 		val = roff_getregro(r, name + 1);
 		if (-1 != val)
 			return val;
 	}
 
 	for (reg = r->regtab; reg; reg = reg->next)
 		if (0 == strcmp(name, reg->key.p))
 			return reg->val;
 
 	return 0;
 }
 
 static int
 roff_getregn(const struct roff *r, const char *name, size_t len)
 {
 	struct roffreg	*reg;
 	int		 val;
 
 	if ('.' == name[0] && 2 == len) {
 		val = roff_getregro(r, name + 1);
 		if (-1 != val)
 			return val;
 	}
 
 	for (reg = r->regtab; reg; reg = reg->next)
 		if (len == reg->key.sz &&
 		    0 == strncmp(name, reg->key.p, len))
 			return reg->val;
 
 	return 0;
 }
 
 static int
 roff_hasregn(const struct roff *r, const char *name, size_t len)
 {
 	struct roffreg	*reg;
 	int		 val;
 
 	if ('.' == name[0] && 2 == len) {
 		val = roff_getregro(r, name + 1);
 		if (-1 != val)
 			return 1;
 	}
 
 	for (reg = r->regtab; reg; reg = reg->next)
 		if (len == reg->key.sz &&
 		    0 == strncmp(name, reg->key.p, len))
 			return 1;
 
 	return 0;
 }
 
 static void
 roff_freereg(struct roffreg *reg)
 {
 	struct roffreg	*old_reg;
 
 	while (NULL != reg) {
 		free(reg->key.p);
 		old_reg = reg;
 		reg = reg->next;
 		free(old_reg);
 	}
 }
 
 static enum rofferr
 roff_nr(ROFF_ARGS)
 {
 	char		*key, *val;
 	size_t		 keysz;
 	int		 iv;
 	char		 sign;
 
 	key = val = buf->buf + pos;
 	if (*key == '\0')
 		return ROFF_IGN;
 
 	keysz = roff_getname(r, &val, ln, pos);
 	if (key[keysz] == '\\')
 		return ROFF_IGN;
 	key[keysz] = '\0';
 
 	sign = *val;
 	if (sign == '+' || sign == '-')
 		val++;
 
 	if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
 		roff_setreg(r, key, iv, sign);
 
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_rr(ROFF_ARGS)
 {
 	struct roffreg	*reg, **prev;
 	char		*name, *cp;
 	size_t		 namesz;
 
 	name = cp = buf->buf + pos;
 	if (*name == '\0')
 		return ROFF_IGN;
 	namesz = roff_getname(r, &cp, ln, pos);
 	name[namesz] = '\0';
 
 	prev = &r->regtab;
 	while (1) {
 		reg = *prev;
 		if (reg == NULL || !strcmp(name, reg->key.p))
 			break;
 		prev = ®->next;
 	}
 	if (reg != NULL) {
 		*prev = reg->next;
 		free(reg->key.p);
 		free(reg);
 	}
 	return ROFF_IGN;
 }
 
 /* --- handler functions for roff requests -------------------------------- */
 
 static enum rofferr
 roff_rm(ROFF_ARGS)
 {
 	const char	 *name;
 	char		 *cp;
 	size_t		  namesz;
 
 	cp = buf->buf + pos;
 	while (*cp != '\0') {
 		name = cp;
 		namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
 		roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
+		roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
 		if (name[namesz] == '\\')
 			break;
 	}
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_it(ROFF_ARGS)
 {
 	int		 iv;
 
 	/* Parse the number of lines. */
 
 	if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
 		mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
 		    ln, ppos, buf->buf + 1);
 		return ROFF_IGN;
 	}
 
 	while (isspace((unsigned char)buf->buf[pos]))
 		pos++;
 
 	/*
 	 * Arm the input line trap.
 	 * Special-casing "an-trap" is an ugly workaround to cope
 	 * with DocBook stupidly fiddling with man(7) internals.
 	 */
 
 	roffit_lines = iv;
 	roffit_macro = mandoc_strdup(iv != 1 ||
 	    strcmp(buf->buf + pos, "an-trap") ?
 	    buf->buf + pos : "br");
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_Dd(ROFF_ARGS)
 {
-	const char *const	*cp;
+	int		 mask;
+	enum roff_tok	 t, te;
 
-	if ((r->options & (MPARSE_MDOC | MPARSE_QUICK)) == 0)
-		for (cp = __mdoc_reserved; *cp; cp++)
-			roff_setstr(r, *cp, NULL, 0);
-
-	if (r->format == 0)
-		r->format = MPARSE_MDOC;
-
+	switch (tok) {
+	case ROFF_Dd:
+		tok = MDOC_Dd;
+		te = MDOC_MAX;
+		if (r->format == 0)
+			r->format = MPARSE_MDOC;
+		mask = MPARSE_MDOC | MPARSE_QUICK;
+		break;
+	case ROFF_TH:
+		tok = MAN_TH;
+		te = MAN_MAX;
+		if (r->format == 0)
+			r->format = MPARSE_MAN;
+		mask = MPARSE_QUICK;
+		break;
+	default:
+		abort();
+	}
+	if ((r->options & mask) == 0)
+		for (t = tok; t < te; t++)
+			roff_setstr(r, roff_name[t], NULL, 0);
 	return ROFF_CONT;
 }
 
 static enum rofferr
-roff_TH(ROFF_ARGS)
-{
-	const char *const	*cp;
-
-	if ((r->options & MPARSE_QUICK) == 0)
-		for (cp = __man_reserved; *cp; cp++)
-			roff_setstr(r, *cp, NULL, 0);
-
-	if (r->format == 0)
-		r->format = MPARSE_MAN;
-
-	return ROFF_CONT;
-}
-
-static enum rofferr
 roff_TE(ROFF_ARGS)
 {
-
-	if (NULL == r->tbl)
+	if (r->tbl == NULL) {
 		mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
 		    ln, ppos, "TE");
-	else if ( ! tbl_end(&r->tbl)) {
+		return ROFF_IGN;
+	}
+	if (tbl_end(r->tbl) == 0) {
+		r->tbl = NULL;
 		free(buf->buf);
 		buf->buf = mandoc_strdup(".sp");
 		buf->sz = 4;
 		return ROFF_REPARSE;
 	}
+	r->tbl = NULL;
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_T_(ROFF_ARGS)
 {
 
 	if (NULL == r->tbl)
 		mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
 		    ln, ppos, "T&");
 	else
 		tbl_restart(ln, ppos, r->tbl);
 
 	return ROFF_IGN;
 }
 
 /*
  * Handle in-line equation delimiters.
  */
 static enum rofferr
 roff_eqndelim(struct roff *r, struct buf *buf, int pos)
 {
 	char		*cp1, *cp2;
 	const char	*bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
 
 	/*
 	 * Outside equations, look for an opening delimiter.
 	 * If we are inside an equation, we already know it is
 	 * in-line, or this function wouldn't have been called;
 	 * so look for a closing delimiter.
 	 */
 
 	cp1 = buf->buf + pos;
 	cp2 = strchr(cp1, r->eqn == NULL ?
 	    r->last_eqn->odelim : r->last_eqn->cdelim);
 	if (cp2 == NULL)
 		return ROFF_CONT;
 
 	*cp2++ = '\0';
 	bef_pr = bef_nl = aft_nl = aft_pr = "";
 
 	/* Handle preceding text, protecting whitespace. */
 
 	if (*buf->buf != '\0') {
 		if (r->eqn == NULL)
 			bef_pr = "\\&";
 		bef_nl = "\n";
 	}
 
 	/*
 	 * Prepare replacing the delimiter with an equation macro
 	 * and drop leading white space from the equation.
 	 */
 
 	if (r->eqn == NULL) {
 		while (*cp2 == ' ')
 			cp2++;
 		mac = ".EQ";
 	} else
 		mac = ".EN";
 
 	/* Handle following text, protecting whitespace. */
 
 	if (*cp2 != '\0') {
 		aft_nl = "\n";
 		if (r->eqn != NULL)
 			aft_pr = "\\&";
 	}
 
 	/* Do the actual replacement. */
 
 	buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
 	    bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
 	free(buf->buf);
 	buf->buf = cp1;
 
 	/* Toggle the in-line state of the eqn subsystem. */
 
 	r->eqn_inline = r->eqn == NULL;
 	return ROFF_REPARSE;
 }
 
 static enum rofferr
 roff_EQ(ROFF_ARGS)
 {
-	struct eqn_node *e;
+	struct roff_node	*n;
 
+	if (r->man->macroset == MACROSET_MAN)
+		man_breakscope(r->man, ROFF_EQ);
+	n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
+	if (ln > r->man->last->line)
+		n->flags |= NODE_LINE;
+	n->eqn = mandoc_calloc(1, sizeof(*n->eqn));
+	n->eqn->expectargs = UINT_MAX;
+	roff_node_append(r->man, n);
+	r->man->next = ROFF_NEXT_SIBLING;
+
 	assert(r->eqn == NULL);
-	e = eqn_alloc(ppos, ln, r->parse);
+	if (r->last_eqn == NULL)
+		r->last_eqn = eqn_alloc(r->parse);
+	else
+		eqn_reset(r->last_eqn);
+	r->eqn = r->last_eqn;
+	r->eqn->node = n;
 
-	if (r->last_eqn) {
-		r->last_eqn->next = e;
-		e->delim = r->last_eqn->delim;
-		e->odelim = r->last_eqn->odelim;
-		e->cdelim = r->last_eqn->cdelim;
-	} else
-		r->first_eqn = r->last_eqn = e;
-
-	r->eqn = r->last_eqn = e;
-
 	if (buf->buf[pos] != '\0')
 		mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
 		    ".EQ %s", buf->buf + pos);
 
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_EN(ROFF_ARGS)
 {
-
-	mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
+	if (r->eqn != NULL) {
+		eqn_parse(r->eqn);
+		r->eqn = NULL;
+	} else
+		mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
+	if (buf->buf[pos] != '\0')
+		mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
+		    "EN %s", buf->buf + pos);
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_TS(ROFF_ARGS)
 {
-	struct tbl_node	*tbl;
-
-	if (r->tbl) {
+	if (r->tbl != NULL) {
 		mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
 		    ln, ppos, "TS breaks TS");
-		tbl_end(&r->tbl);
+		tbl_end(r->tbl);
 	}
-
-	tbl = tbl_alloc(ppos, ln, r->parse);
-
+	r->tbl = tbl_alloc(ppos, ln, r->parse);
 	if (r->last_tbl)
-		r->last_tbl->next = tbl;
+		r->last_tbl->next = r->tbl;
 	else
-		r->first_tbl = r->last_tbl = tbl;
-
-	r->tbl = r->last_tbl = tbl;
+		r->first_tbl = r->tbl;
+	r->last_tbl = r->tbl;
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_onearg(ROFF_ARGS)
 {
 	struct roff_node	*n;
 	char			*cp;
 	int			 npos;
 
 	if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
-	    (tok == ROFF_sp || tok == ROFF_ti))
+	    (tok == ROFF_ce || tok == ROFF_rj || tok == ROFF_sp ||
+	     tok == ROFF_ti))
 		man_breakscope(r->man, tok);
 
-	if (tok == ROFF_ce && roffce_node != NULL) {
+	if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
 		r->man->last = roffce_node;
 		r->man->next = ROFF_NEXT_SIBLING;
 	}
 
 	roff_elem_alloc(r->man, ln, ppos, tok);
 	n = r->man->last;
 
 	cp = buf->buf + pos;
 	if (*cp != '\0') {
 		while (*cp != '\0' && *cp != ' ')
 			cp++;
 		while (*cp == ' ')
 			*cp++ = '\0';
 		if (*cp != '\0')
 			mandoc_vmsg(MANDOCERR_ARG_EXCESS,
 			    r->parse, ln, cp - buf->buf,
 			    "%s ... %s", roff_name[tok], cp);
 		roff_word_alloc(r->man, ln, pos, buf->buf + pos);
 	}
 
-	if (tok == ROFF_ce) {
-		if (r->man->last->tok == ROFF_ce) {
+	if (tok == ROFF_ce || tok == ROFF_rj) {
+		if (r->man->last->type == ROFFT_ELEM) {
 			roff_word_alloc(r->man, ln, pos, "1");
 			r->man->last->flags |= NODE_NOSRC;
 		}
 		npos = 0;
 		if (roff_evalnum(r, ln, r->man->last->string, &npos,
 		    &roffce_lines, 0) == 0) {
 			mandoc_vmsg(MANDOCERR_CE_NONUM,
 			    r->parse, ln, pos, "ce %s", buf->buf + pos);
 			roffce_lines = 1;
 		}
 		if (roffce_lines < 1) {
 			r->man->last = r->man->last->parent;
 			roffce_node = NULL;
 			roffce_lines = 0;
 		} else
 			roffce_node = r->man->last->parent;
 	} else {
 		n->flags |= NODE_VALID | NODE_ENDED;
 		r->man->last = n;
 	}
 	n->flags |= NODE_LINE;
 	r->man->next = ROFF_NEXT_SIBLING;
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_manyarg(ROFF_ARGS)
 {
 	struct roff_node	*n;
 	char			*sp, *ep;
 
 	roff_elem_alloc(r->man, ln, ppos, tok);
 	n = r->man->last;
 
 	for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
 		while (*ep != '\0' && *ep != ' ')
 			ep++;
 		while (*ep == ' ')
 			*ep++ = '\0';
 		roff_word_alloc(r->man, ln, sp - buf->buf, sp);
 	}
 
 	n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
 	r->man->last = n;
 	r->man->next = ROFF_NEXT_SIBLING;
 	return ROFF_IGN;
 }
 
 static enum rofferr
+roff_als(ROFF_ARGS)
+{
+	char		*oldn, *newn, *end, *value;
+	size_t		 oldsz, newsz, valsz;
+
+	newn = oldn = buf->buf + pos;
+	if (*newn == '\0')
+		return ROFF_IGN;
+
+	newsz = roff_getname(r, &oldn, ln, pos);
+	if (newn[newsz] == '\\' || *oldn == '\0')
+		return ROFF_IGN;
+
+	end = oldn;
+	oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
+	if (oldsz == 0)
+		return ROFF_IGN;
+
+	valsz = mandoc_asprintf(&value, ".%.*s \\$*\\\"\n",
+	    (int)oldsz, oldn);
+	roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
+	roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
+	free(value);
+	return ROFF_IGN;
+}
+
+static enum rofferr
 roff_br(ROFF_ARGS)
 {
 	if (r->man->flags & (MAN_BLINE | MAN_ELINE))
 		man_breakscope(r->man, ROFF_br);
 	roff_elem_alloc(r->man, ln, ppos, ROFF_br);
 	if (buf->buf[pos] != '\0')
 		mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
 		    "%s %s", roff_name[tok], buf->buf + pos);
 	r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
 	r->man->next = ROFF_NEXT_SIBLING;
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_cc(ROFF_ARGS)
 {
 	const char	*p;
 
 	p = buf->buf + pos;
 
 	if (*p == '\0' || (r->control = *p++) == '.')
 		r->control = '\0';
 
 	if (*p != '\0')
 		mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
 		    ln, p - buf->buf, "cc ... %s", p);
 
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_ec(ROFF_ARGS)
 {
 	const char	*p;
 
 	p = buf->buf + pos;
 	if (*p == '\0')
 		r->escape = '\\';
 	else {
 		r->escape = *p;
 		if (*++p != '\0')
 			mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
 			    ln, p - buf->buf, "ec ... %s", p);
 	}
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_eo(ROFF_ARGS)
 {
 	r->escape = '\0';
 	if (buf->buf[pos] != '\0')
 		mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
 		    ln, pos, "eo %s", buf->buf + pos);
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_tr(ROFF_ARGS)
 {
 	const char	*p, *first, *second;
 	size_t		 fsz, ssz;
 	enum mandoc_esc	 esc;
 
 	p = buf->buf + pos;
 
 	if (*p == '\0') {
 		mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
 		return ROFF_IGN;
 	}
 
 	while (*p != '\0') {
 		fsz = ssz = 1;
 
 		first = p++;
 		if (*first == '\\') {
 			esc = mandoc_escape(&p, NULL, NULL);
 			if (esc == ESCAPE_ERROR) {
 				mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
 				    ln, (int)(p - buf->buf), first);
 				return ROFF_IGN;
 			}
 			fsz = (size_t)(p - first);
 		}
 
 		second = p++;
 		if (*second == '\\') {
 			esc = mandoc_escape(&p, NULL, NULL);
 			if (esc == ESCAPE_ERROR) {
 				mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
 				    ln, (int)(p - buf->buf), second);
 				return ROFF_IGN;
 			}
 			ssz = (size_t)(p - second);
 		} else if (*second == '\0') {
 			mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
 			    ln, first - buf->buf, "tr %s", first);
 			second = " ";
 			p--;
 		}
 
 		if (fsz > 1) {
 			roff_setstrn(&r->xmbtab, first, fsz,
 			    second, ssz, 0);
 			continue;
 		}
 
 		if (r->xtab == NULL)
 			r->xtab = mandoc_calloc(128,
 			    sizeof(struct roffstr));
 
 		free(r->xtab[(int)*first].p);
 		r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
 		r->xtab[(int)*first].sz = ssz;
 	}
 
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_rn(ROFF_ARGS)
 {
 	const char	*value;
 	char		*oldn, *newn, *end;
 	size_t		 oldsz, newsz;
+	int		 deftype;
 
 	oldn = newn = buf->buf + pos;
 	if (*oldn == '\0')
 		return ROFF_IGN;
 
 	oldsz = roff_getname(r, &newn, ln, pos);
 	if (oldn[oldsz] == '\\' || *newn == '\0')
 		return ROFF_IGN;
 
 	end = newn;
 	newsz = roff_getname(r, &end, ln, newn - buf->buf);
 	if (newsz == 0)
 		return ROFF_IGN;
 
-	/*
-	 * Rename a user-defined macro bearing the old name,
-	 * overriding an existing renamed high-level macro
-	 * bearing the new name, if that exists.
-	 */
-
-	if ((value = roff_getstrn(r, oldn, oldsz)) != NULL) {
+	deftype = ROFFDEF_ANY;
+	value = roff_getstrn(r, oldn, oldsz, &deftype);
+	switch (deftype) {
+	case ROFFDEF_USER:
 		roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
 		roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
 		roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
-		return ROFF_IGN;
-	}
-
-	/*
-	 * Rename a high-level macro bearing the old name,
-	 * either renaming it a second time if it was already
-	 * renamed before, or renaming it for the first time.
-	 * In both cases, override an existing user-defined
-	 * macro bearing the new name, if that exists.
-	 */
-
-	if ((value = roff_getrenn(r, oldn, oldsz)) != NULL) {
+		break;
+	case ROFFDEF_PRE:
+		roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
+		roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
+		break;
+	case ROFFDEF_REN:
 		roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
 		roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
-	} else
+		roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
+		break;
+	case ROFFDEF_STD:
 		roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
-	roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
+		roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
+		break;
+	default:
+		roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
+		roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
+		break;
+	}
 	return ROFF_IGN;
 }
 
 static enum rofferr
 roff_so(ROFF_ARGS)
 {
 	char *name, *cp;
 
 	name = buf->buf + pos;
 	mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
 
 	/*
 	 * Handle `so'.  Be EXTREMELY careful, as we shouldn't be
 	 * opening anything that's not in our cwd or anything beneath
 	 * it.  Thus, explicitly disallow traversing up the file-system
 	 * or using absolute paths.
 	 */
 
 	if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
 		mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
 		    ".so %s", name);
 		buf->sz = mandoc_asprintf(&cp,
 		    ".sp\nSee the file %s.\n.sp", name) + 1;
 		free(buf->buf);
 		buf->buf = cp;
 		*offs = 0;
 		return ROFF_REPARSE;
 	}
 
 	*offs = pos;
 	return ROFF_SO;
 }
 
 /* --- user defined strings and macros ------------------------------------ */
 
 static enum rofferr
 roff_userdef(ROFF_ARGS)
 {
-	const char	 *arg[9], *ap;
+	const char	 *arg[16], *ap;
 	char		 *cp, *n1, *n2;
 	int		  expand_count, i, ib, ie;
 	size_t		  asz, rsz;
 
 	/*
 	 * Collect pointers to macro argument strings
 	 * and NUL-terminate them.
 	 */
 
 	r->argc = 0;
 	cp = buf->buf + pos;
-	for (i = 0; i < 9; i++) {
+	for (i = 0; i < 16; i++) {
 		if (*cp == '\0')
 			arg[i] = "";
 		else {
 			arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
 			r->argc = i + 1;
 		}
 	}
 
 	/*
 	 * Expand macro arguments.
 	 */
 
 	buf->sz = strlen(r->current_string) + 1;
 	n1 = n2 = cp = mandoc_malloc(buf->sz);
 	memcpy(n1, r->current_string, buf->sz);
 	expand_count = 0;
 	while (*cp != '\0') {
 
 		/* Scan ahead for the next argument invocation. */
 
 		if (*cp++ != '\\')
 			continue;
 		if (*cp++ != '$')
 			continue;
 		if (*cp == '*') {  /* \\$* inserts all arguments */
 			ib = 0;
 			ie = r->argc - 1;
 		} else {  /* \\$1 .. \\$9 insert one argument */
 			ib = ie = *cp - '1';
 			if (ib < 0 || ib > 8)
 				continue;
 		}
 		cp -= 2;
 
 		/*
 		 * Prevent infinite recursion.
 		 */
 
 		if (cp >= n2)
 			expand_count = 1;
 		else if (++expand_count > EXPAND_LIMIT) {
 			mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
 			    ln, (int)(cp - n1), NULL);
 			free(buf->buf);
 			buf->buf = n1;
 			return ROFF_IGN;
 		}
 
 		/*
 		 * Determine the size of the expanded argument,
 		 * taking escaping of quotes into account.
 		 */
 
 		asz = ie > ib ? ie - ib : 0;  /* for blanks */
 		for (i = ib; i <= ie; i++) {
 			for (ap = arg[i]; *ap != '\0'; ap++) {
 				asz++;
 				if (*ap == '"')
 					asz += 3;
 			}
 		}
 		if (asz != 3) {
 
 			/*
 			 * Determine the size of the rest of the
 			 * unexpanded macro, including the NUL.
 			 */
 
 			rsz = buf->sz - (cp - n1) - 3;
 
 			/*
 			 * When shrinking, move before
 			 * releasing the storage.
 			 */
 
 			if (asz < 3)
 				memmove(cp + asz, cp + 3, rsz);
 
 			/*
 			 * Resize the storage for the macro
 			 * and readjust the parse pointer.
 			 */
 
 			buf->sz += asz - 3;
 			n2 = mandoc_realloc(n1, buf->sz);
 			cp = n2 + (cp - n1);
 			n1 = n2;
 
 			/*
 			 * When growing, make room
 			 * for the expanded argument.
 			 */
 
 			if (asz > 3)
 				memmove(cp + asz, cp + 3, rsz);
 		}
 
 		/* Copy the expanded argument, escaping quotes. */
 
 		n2 = cp;
 		for (i = ib; i <= ie; i++) {
 			for (ap = arg[i]; *ap != '\0'; ap++) {
 				if (*ap == '"') {
 					memcpy(n2, "\\(dq", 4);
 					n2 += 4;
 				} else
 					*n2++ = *ap;
 			}
 			if (i < ie)
 				*n2++ = ' ';
 		}
 	}
 
 	/*
 	 * Replace the macro invocation
 	 * by the expanded macro.
 	 */
 
 	free(buf->buf);
 	buf->buf = n1;
 	*offs = 0;
 
 	return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
 	   ROFF_REPARSE : ROFF_APPEND;
 }
 
 /*
  * Calling a high-level macro that was renamed with .rn.
  * r->current_string has already been set up by roff_parse().
  */
 static enum rofferr
 roff_renamed(ROFF_ARGS)
 {
 	char	*nbuf;
 
-	buf->sz = mandoc_asprintf(&nbuf, ".%s %s", r->current_string,
-	    buf->buf + pos) + 1;
+	buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
+	    buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
 	free(buf->buf);
 	buf->buf = nbuf;
 	return ROFF_CONT;
 }
 
 static size_t
 roff_getname(struct roff *r, char **cpp, int ln, int pos)
 {
 	char	 *name, *cp;
 	size_t	  namesz;
 
 	name = *cpp;
 	if ('\0' == *name)
 		return 0;
 
 	/* Read until end of name and terminate it with NUL. */
 	for (cp = name; 1; cp++) {
 		if ('\0' == *cp || ' ' == *cp) {
 			namesz = cp - name;
 			break;
 		}
 		if ('\\' != *cp)
 			continue;
 		namesz = cp - name;
 		if ('{' == cp[1] || '}' == cp[1])
 			break;
 		cp++;
 		if ('\\' == *cp)
 			continue;
 		mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
 		    "%.*s", (int)(cp - name + 1), name);
 		mandoc_escape((const char **)&cp, NULL, NULL);
 		break;
 	}
 
 	/* Read past spaces. */
 	while (' ' == *cp)
 		cp++;
 
 	*cpp = cp;
 	return namesz;
 }
 
 /*
  * Store *string into the user-defined string called *name.
  * To clear an existing entry, call with (*r, *name, NULL, 0).
  * append == 0: replace mode
  * append == 1: single-line append mode
  * append == 2: multiline append mode, append '\n' after each call
  */
 static void
 roff_setstr(struct roff *r, const char *name, const char *string,
 	int append)
 {
+	size_t	 namesz;
 
-	roff_setstrn(&r->strtab, name, strlen(name), string,
+	namesz = strlen(name);
+	roff_setstrn(&r->strtab, name, namesz, string,
 	    string ? strlen(string) : 0, append);
+	roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
 }
 
 static void
 roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
 		const char *string, size_t stringsz, int append)
 {
 	struct roffkv	*n;
 	char		*c;
 	int		 i;
 	size_t		 oldch, newch;
 
 	/* Search for an existing string with the same name. */
 	n = *r;
 
 	while (n && (namesz != n->key.sz ||
 			strncmp(n->key.p, name, namesz)))
 		n = n->next;
 
 	if (NULL == n) {
 		/* Create a new string table entry. */
 		n = mandoc_malloc(sizeof(struct roffkv));
 		n->key.p = mandoc_strndup(name, namesz);
 		n->key.sz = namesz;
 		n->val.p = NULL;
 		n->val.sz = 0;
 		n->next = *r;
 		*r = n;
 	} else if (0 == append) {
 		free(n->val.p);
 		n->val.p = NULL;
 		n->val.sz = 0;
 	}
 
 	if (NULL == string)
 		return;
 
 	/*
 	 * One additional byte for the '\n' in multiline mode,
 	 * and one for the terminating '\0'.
 	 */
 	newch = stringsz + (1 < append ? 2u : 1u);
 
 	if (NULL == n->val.p) {
 		n->val.p = mandoc_malloc(newch);
 		*n->val.p = '\0';
 		oldch = 0;
 	} else {
 		oldch = n->val.sz;
 		n->val.p = mandoc_realloc(n->val.p, oldch + newch);
 	}
 
 	/* Skip existing content in the destination buffer. */
 	c = n->val.p + (int)oldch;
 
 	/* Append new content to the destination buffer. */
 	i = 0;
 	while (i < (int)stringsz) {
 		/*
 		 * Rudimentary roff copy mode:
 		 * Handle escaped backslashes.
 		 */
 		if ('\\' == string[i] && '\\' == string[i + 1])
 			i++;
 		*c++ = string[i++];
 	}
 
 	/* Append terminating bytes. */
 	if (1 < append)
 		*c++ = '\n';
 
 	*c = '\0';
 	n->val.sz = (int)(c - n->val.p);
 }
 
 static const char *
-roff_getstrn(const struct roff *r, const char *name, size_t len)
+roff_getstrn(const struct roff *r, const char *name, size_t len,
+    int *deftype)
 {
-	const struct roffkv *n;
-	int i;
+	const struct roffkv	*n;
+	int			 i;
+	enum roff_tok		 tok;
 
-	for (n = r->strtab; n; n = n->next)
-		if (0 == strncmp(name, n->key.p, len) &&
-		    '\0' == n->key.p[(int)len])
-			return n->val.p;
-
-	for (i = 0; i < PREDEFS_MAX; i++)
-		if (0 == strncmp(name, predefs[i].name, len) &&
-				'\0' == predefs[i].name[(int)len])
-			return predefs[i].str;
-
+	if (*deftype & ROFFDEF_USER) {
+		for (n = r->strtab; n != NULL; n = n->next) {
+			if (strncmp(name, n->key.p, len) == 0 &&
+			    n->key.p[len] == '\0' &&
+			    n->val.p != NULL) {
+				*deftype = ROFFDEF_USER;
+				return n->val.p;
+			}
+		}
+	}
+	if (*deftype & ROFFDEF_PRE) {
+		for (i = 0; i < PREDEFS_MAX; i++) {
+			if (strncmp(name, predefs[i].name, len) == 0 &&
+			    predefs[i].name[len] == '\0') {
+				*deftype = ROFFDEF_PRE;
+				return predefs[i].str;
+			}
+		}
+	}
+	if (*deftype & ROFFDEF_REN) {
+		for (n = r->rentab; n != NULL; n = n->next) {
+			if (strncmp(name, n->key.p, len) == 0 &&
+			    n->key.p[len] == '\0' &&
+			    n->val.p != NULL) {
+				*deftype = ROFFDEF_REN;
+				return n->val.p;
+			}
+		}
+	}
+	if (*deftype & ROFFDEF_STD) {
+		if (r->man->macroset != MACROSET_MAN) {
+			for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
+				if (strncmp(name, roff_name[tok], len) == 0 &&
+				    roff_name[tok][len] == '\0') {
+					*deftype = ROFFDEF_STD;
+					return NULL;
+				}
+			}
+		}
+		if (r->man->macroset != MACROSET_MDOC) {
+			for (tok = MAN_TH; tok < MAN_MAX; tok++) {
+				if (strncmp(name, roff_name[tok], len) == 0 &&
+				    roff_name[tok][len] == '\0') {
+					*deftype = ROFFDEF_STD;
+					return NULL;
+				}
+			}
+		}
+	}
+	*deftype = 0;
 	return NULL;
 }
 
-/*
- * Check whether *name is the renamed name of a high-level macro.
- * Return the standard name, or NULL if it is not.
- */
-static const char *
-roff_getrenn(const struct roff *r, const char *name, size_t len)
-{
-	const struct roffkv *n;
-
-	for (n = r->rentab; n; n = n->next)
-		if (0 == strncmp(name, n->key.p, len) &&
-		    '\0' == n->key.p[(int)len])
-			return n->val.p;
-
-	return NULL;
-}
-
 static void
 roff_freestr(struct roffkv *r)
 {
 	struct roffkv	 *n, *nn;
 
 	for (n = r; n; n = nn) {
 		free(n->key.p);
 		free(n->val.p);
 		nn = n->next;
 		free(n);
 	}
 }
 
 /* --- accessors and utility functions ------------------------------------ */
-
-const struct tbl_span *
-roff_span(const struct roff *r)
-{
-
-	return r->tbl ? tbl_span(r->tbl) : NULL;
-}
-
-const struct eqn *
-roff_eqn(const struct roff *r)
-{
-
-	return r->last_eqn ? &r->last_eqn->eqn : NULL;
-}
 
 /*
  * Duplicate an input string, making the appropriate character
  * conversations (as stipulated by `tr') along the way.
  * Returns a heap-allocated string with all the replacements made.
  */
 char *
 roff_strdup(const struct roff *r, const char *p)
 {
 	const struct roffkv *cp;
 	char		*res;
 	const char	*pp;
 	size_t		 ssz, sz;
 	enum mandoc_esc	 esc;
 
 	if (NULL == r->xmbtab && NULL == r->xtab)
 		return mandoc_strdup(p);
 	else if ('\0' == *p)
 		return mandoc_strdup("");
 
 	/*
 	 * Step through each character looking for term matches
 	 * (remember that a `tr' can be invoked with an escape, which is
 	 * a glyph but the escape is multi-character).
 	 * We only do this if the character hash has been initialised
 	 * and the string is >0 length.
 	 */
 
 	res = NULL;
 	ssz = 0;
 
 	while ('\0' != *p) {
 		assert((unsigned int)*p < 128);
 		if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
 			sz = r->xtab[(int)*p].sz;
 			res = mandoc_realloc(res, ssz + sz + 1);
 			memcpy(res + ssz, r->xtab[(int)*p].p, sz);
 			ssz += sz;
 			p++;
 			continue;
 		} else if ('\\' != *p) {
 			res = mandoc_realloc(res, ssz + 2);
 			res[ssz++] = *p++;
 			continue;
 		}
 
 		/* Search for term matches. */
 		for (cp = r->xmbtab; cp; cp = cp->next)
 			if (0 == strncmp(p, cp->key.p, cp->key.sz))
 				break;
 
 		if (NULL != cp) {
 			/*
 			 * A match has been found.
 			 * Append the match to the array and move
 			 * forward by its keysize.
 			 */
 			res = mandoc_realloc(res,
 			    ssz + cp->val.sz + 1);
 			memcpy(res + ssz, cp->val.p, cp->val.sz);
 			ssz += cp->val.sz;
 			p += (int)cp->key.sz;
 			continue;
 		}
 
 		/*
 		 * Handle escapes carefully: we need to copy
 		 * over just the escape itself, or else we might
 		 * do replacements within the escape itself.
 		 * Make sure to pass along the bogus string.
 		 */
 		pp = p++;
 		esc = mandoc_escape(&p, NULL, NULL);
 		if (ESCAPE_ERROR == esc) {
 			sz = strlen(pp);
 			res = mandoc_realloc(res, ssz + sz + 1);
 			memcpy(res + ssz, pp, sz);
 			break;
 		}
 		/*
 		 * We bail out on bad escapes.
 		 * No need to warn: we already did so when
 		 * roff_res() was called.
 		 */
 		sz = (int)(p - pp);
 		res = mandoc_realloc(res, ssz + sz + 1);
 		memcpy(res + ssz, pp, sz);
 		ssz += sz;
 	}
 
 	res[(int)ssz] = '\0';
 	return res;
 }
 
 int
 roff_getformat(const struct roff *r)
 {
 
 	return r->format;
 }
 
 /*
  * Find out whether a line is a macro line or not.
  * If it is, adjust the current position and return one; if it isn't,
  * return zero and don't change the current position.
  * If the control character has been set with `.cc', then let that grain
  * precedence.
  * This is slighly contrary to groff, where using the non-breaking
  * control character when `cc' has been invoked will cause the
  * non-breaking macro contents to be printed verbatim.
  */
 int
 roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
 {
 	int		pos;
 
 	pos = *ppos;
 
 	if (r->control != '\0' && cp[pos] == r->control)
 		pos++;
 	else if (r->control != '\0')
 		return 0;
 	else if ('\\' == cp[pos] && '.' == cp[pos + 1])
 		pos += 2;
 	else if ('.' == cp[pos] || '\'' == cp[pos])
 		pos++;
 	else
 		return 0;
 
 	while (' ' == cp[pos] || '\t' == cp[pos])
 		pos++;
 
 	*ppos = pos;
 	return 1;
 }
Index: vendor/mdocml/dist/roff.h
===================================================================
--- vendor/mdocml/dist/roff.h	(revision 321806)
+++ vendor/mdocml/dist/roff.h	(revision 321807)
@@ -1,582 +1,579 @@
-/*	$Id: roff.h,v 1.52 2017/06/07 23:29:49 schwarze Exp $	*/
+/*	$Id: roff.h,v 1.58 2017/07/08 14:51:05 schwarze Exp $	*/
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons 
  * Copyright (c) 2013, 2014, 2015, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
 struct	ohash;
 struct	mdoc_arg;
 union	mdoc_data;
 
 enum	roff_macroset {
 	MACROSET_NONE = 0,
 	MACROSET_MDOC,
 	MACROSET_MAN
 };
 
-enum	mdoc_os {
-	MDOC_OS_OTHER = 0,
-	MDOC_OS_NETBSD,
-	MDOC_OS_OPENBSD
-};
-
 enum	roff_sec {
 	SEC_NONE = 0,
 	SEC_NAME,
 	SEC_LIBRARY,
 	SEC_SYNOPSIS,
 	SEC_DESCRIPTION,
 	SEC_CONTEXT,
 	SEC_IMPLEMENTATION,	/* IMPLEMENTATION NOTES */
 	SEC_RETURN_VALUES,
 	SEC_ENVIRONMENT,
 	SEC_FILES,
 	SEC_EXIT_STATUS,
 	SEC_EXAMPLES,
 	SEC_DIAGNOSTICS,
 	SEC_COMPATIBILITY,
 	SEC_ERRORS,
 	SEC_SEE_ALSO,
 	SEC_STANDARDS,
 	SEC_HISTORY,
 	SEC_AUTHORS,
 	SEC_CAVEATS,
 	SEC_BUGS,
 	SEC_SECURITY,
 	SEC_CUSTOM,
 	SEC__MAX
 };
 
 enum	roff_type {
 	ROFFT_ROOT,
 	ROFFT_BLOCK,
 	ROFFT_HEAD,
 	ROFFT_BODY,
 	ROFFT_TAIL,
 	ROFFT_ELEM,
 	ROFFT_TEXT,
 	ROFFT_TBL,
 	ROFFT_EQN
 };
 
 enum	roff_tok {
 	ROFF_br = 0,
 	ROFF_ce,
 	ROFF_ft,
 	ROFF_ll,
 	ROFF_mc,
+	ROFF_po,
+	ROFF_rj,
 	ROFF_sp,
 	ROFF_ta,
 	ROFF_ti,
 	ROFF_MAX,
 	ROFF_ab,
 	ROFF_ad,
 	ROFF_af,
 	ROFF_aln,
 	ROFF_als,
 	ROFF_am,
 	ROFF_am1,
 	ROFF_ami,
 	ROFF_ami1,
 	ROFF_as,
 	ROFF_as1,
 	ROFF_asciify,
 	ROFF_backtrace,
 	ROFF_bd,
 	ROFF_bleedat,
 	ROFF_blm,
 	ROFF_box,
 	ROFF_boxa,
 	ROFF_bp,
 	ROFF_BP,
 	ROFF_break,
 	ROFF_breakchar,
 	ROFF_brnl,
 	ROFF_brp,
 	ROFF_brpnl,
 	ROFF_c2,
 	ROFF_cc,
 	ROFF_cf,
 	ROFF_cflags,
 	ROFF_ch,
 	ROFF_char,
 	ROFF_chop,
 	ROFF_class,
 	ROFF_close,
 	ROFF_CL,
 	ROFF_color,
 	ROFF_composite,
 	ROFF_continue,
 	ROFF_cp,
 	ROFF_cropat,
 	ROFF_cs,
 	ROFF_cu,
 	ROFF_da,
 	ROFF_dch,
 	ROFF_Dd,
 	ROFF_de,
 	ROFF_de1,
 	ROFF_defcolor,
 	ROFF_dei,
 	ROFF_dei1,
 	ROFF_device,
 	ROFF_devicem,
 	ROFF_di,
 	ROFF_do,
 	ROFF_ds,
 	ROFF_ds1,
 	ROFF_dwh,
 	ROFF_dt,
 	ROFF_ec,
 	ROFF_ecr,
 	ROFF_ecs,
 	ROFF_el,
 	ROFF_em,
 	ROFF_EN,
 	ROFF_eo,
 	ROFF_EP,
 	ROFF_EQ,
 	ROFF_errprint,
 	ROFF_ev,
 	ROFF_evc,
 	ROFF_ex,
 	ROFF_fallback,
 	ROFF_fam,
 	ROFF_fc,
 	ROFF_fchar,
 	ROFF_fcolor,
 	ROFF_fdeferlig,
 	ROFF_feature,
 	/* MAN_fi; ignored in mdoc(7) */
 	ROFF_fkern,
 	ROFF_fl,
 	ROFF_flig,
 	ROFF_fp,
 	ROFF_fps,
 	ROFF_fschar,
 	ROFF_fspacewidth,
 	ROFF_fspecial,
 	ROFF_ftr,
 	ROFF_fzoom,
 	ROFF_gcolor,
 	ROFF_hc,
 	ROFF_hcode,
 	ROFF_hidechar,
 	ROFF_hla,
 	ROFF_hlm,
 	ROFF_hpf,
 	ROFF_hpfa,
 	ROFF_hpfcode,
 	ROFF_hw,
 	ROFF_hy,
 	ROFF_hylang,
 	ROFF_hylen,
 	ROFF_hym,
 	ROFF_hypp,
 	ROFF_hys,
 	ROFF_ie,
 	ROFF_if,
 	ROFF_ig,
 	/* MAN_in; ignored in mdoc(7) */
 	ROFF_index,
 	ROFF_it,
 	ROFF_itc,
 	ROFF_IX,
 	ROFF_kern,
 	ROFF_kernafter,
 	ROFF_kernbefore,
 	ROFF_kernpair,
 	ROFF_lc,
 	ROFF_lc_ctype,
 	ROFF_lds,
 	ROFF_length,
 	ROFF_letadj,
 	ROFF_lf,
 	ROFF_lg,
 	ROFF_lhang,
 	ROFF_linetabs,
 	ROFF_lnr,
 	ROFF_lnrf,
 	ROFF_lpfx,
 	ROFF_ls,
 	ROFF_lsm,
 	ROFF_lt,
 	ROFF_mediasize,
 	ROFF_minss,
 	ROFF_mk,
 	ROFF_mso,
 	ROFF_na,
 	ROFF_ne,
 	/* MAN_nf; ignored in mdoc(7) */
 	ROFF_nh,
 	ROFF_nhychar,
 	ROFF_nm,
 	ROFF_nn,
 	ROFF_nop,
 	ROFF_nr,
 	ROFF_nrf,
 	ROFF_nroff,
 	ROFF_ns,
 	ROFF_nx,
 	ROFF_open,
 	ROFF_opena,
 	ROFF_os,
 	ROFF_output,
 	ROFF_padj,
 	ROFF_papersize,
 	ROFF_pc,
 	ROFF_pev,
 	ROFF_pi,
 	ROFF_PI,
 	ROFF_pl,
 	ROFF_pm,
 	ROFF_pn,
 	ROFF_pnr,
-	ROFF_po,
 	ROFF_ps,
 	ROFF_psbb,
 	ROFF_pshape,
 	ROFF_pso,
 	ROFF_ptr,
 	ROFF_pvs,
 	ROFF_rchar,
 	ROFF_rd,
 	ROFF_recursionlimit,
 	ROFF_return,
 	ROFF_rfschar,
 	ROFF_rhang,
-	ROFF_rj,
 	ROFF_rm,
 	ROFF_rn,
 	ROFF_rnn,
 	ROFF_rr,
 	ROFF_rs,
 	ROFF_rt,
 	ROFF_schar,
 	ROFF_sentchar,
 	ROFF_shc,
 	ROFF_shift,
 	ROFF_sizes,
 	ROFF_so,
 	ROFF_spacewidth,
 	ROFF_special,
 	ROFF_spreadwarn,
 	ROFF_ss,
 	ROFF_sty,
 	ROFF_substring,
 	ROFF_sv,
 	ROFF_sy,
 	ROFF_T_,
 	ROFF_tc,
 	ROFF_TE,
 	ROFF_TH,
 	ROFF_tkf,
 	ROFF_tl,
 	ROFF_tm,
 	ROFF_tm1,
 	ROFF_tmc,
 	ROFF_tr,
 	ROFF_track,
 	ROFF_transchar,
 	ROFF_trf,
 	ROFF_trimat,
 	ROFF_trin,
 	ROFF_trnt,
 	ROFF_troff,
 	ROFF_TS,
 	ROFF_uf,
 	ROFF_ul,
 	ROFF_unformat,
 	ROFF_unwatch,
 	ROFF_unwatchn,
 	ROFF_vpt,
 	ROFF_vs,
 	ROFF_warn,
 	ROFF_warnscale,
 	ROFF_watch,
 	ROFF_watchlength,
 	ROFF_watchn,
 	ROFF_wh,
 	ROFF_while,
 	ROFF_write,
 	ROFF_writec,
 	ROFF_writem,
 	ROFF_xflag,
 	ROFF_cblock,
 	ROFF_RENAMED,
 	ROFF_USERDEF,
 	TOKEN_NONE,
 	MDOC_Dd,
 	MDOC_Dt,
 	MDOC_Os,
 	MDOC_Sh,
 	MDOC_Ss,
 	MDOC_Pp,
 	MDOC_D1,
 	MDOC_Dl,
 	MDOC_Bd,
 	MDOC_Ed,
 	MDOC_Bl,
 	MDOC_El,
 	MDOC_It,
 	MDOC_Ad,
 	MDOC_An,
 	MDOC_Ap,
 	MDOC_Ar,
 	MDOC_Cd,
 	MDOC_Cm,
 	MDOC_Dv,
 	MDOC_Er,
 	MDOC_Ev,
 	MDOC_Ex,
 	MDOC_Fa,
 	MDOC_Fd,
 	MDOC_Fl,
 	MDOC_Fn,
 	MDOC_Ft,
 	MDOC_Ic,
 	MDOC_In,
 	MDOC_Li,
 	MDOC_Nd,
 	MDOC_Nm,
 	MDOC_Op,
 	MDOC_Ot,
 	MDOC_Pa,
 	MDOC_Rv,
 	MDOC_St,
 	MDOC_Va,
 	MDOC_Vt,
 	MDOC_Xr,
 	MDOC__A,
 	MDOC__B,
 	MDOC__D,
 	MDOC__I,
 	MDOC__J,
 	MDOC__N,
 	MDOC__O,
 	MDOC__P,
 	MDOC__R,
 	MDOC__T,
 	MDOC__V,
 	MDOC_Ac,
 	MDOC_Ao,
 	MDOC_Aq,
 	MDOC_At,
 	MDOC_Bc,
 	MDOC_Bf,
 	MDOC_Bo,
 	MDOC_Bq,
 	MDOC_Bsx,
 	MDOC_Bx,
 	MDOC_Db,
 	MDOC_Dc,
 	MDOC_Do,
 	MDOC_Dq,
 	MDOC_Ec,
 	MDOC_Ef,
 	MDOC_Em,
 	MDOC_Eo,
 	MDOC_Fx,
 	MDOC_Ms,
 	MDOC_No,
 	MDOC_Ns,
 	MDOC_Nx,
 	MDOC_Ox,
 	MDOC_Pc,
 	MDOC_Pf,
 	MDOC_Po,
 	MDOC_Pq,
 	MDOC_Qc,
 	MDOC_Ql,
 	MDOC_Qo,
 	MDOC_Qq,
 	MDOC_Re,
 	MDOC_Rs,
 	MDOC_Sc,
 	MDOC_So,
 	MDOC_Sq,
 	MDOC_Sm,
 	MDOC_Sx,
 	MDOC_Sy,
 	MDOC_Tn,
 	MDOC_Ux,
 	MDOC_Xc,
 	MDOC_Xo,
 	MDOC_Fo,
 	MDOC_Fc,
 	MDOC_Oo,
 	MDOC_Oc,
 	MDOC_Bk,
 	MDOC_Ek,
 	MDOC_Bt,
 	MDOC_Hf,
 	MDOC_Fr,
 	MDOC_Ud,
 	MDOC_Lb,
 	MDOC_Lp,
 	MDOC_Lk,
 	MDOC_Mt,
 	MDOC_Brq,
 	MDOC_Bro,
 	MDOC_Brc,
 	MDOC__C,
 	MDOC_Es,
 	MDOC_En,
 	MDOC_Dx,
 	MDOC__Q,
 	MDOC__U,
 	MDOC_Ta,
 	MDOC_MAX,
 	MAN_TH,
 	MAN_SH,
 	MAN_SS,
 	MAN_TP,
 	MAN_LP,
 	MAN_PP,
 	MAN_P,
 	MAN_IP,
 	MAN_HP,
 	MAN_SM,
 	MAN_SB,
 	MAN_BI,
 	MAN_IB,
 	MAN_BR,
 	MAN_RB,
 	MAN_R,
 	MAN_B,
 	MAN_I,
 	MAN_IR,
 	MAN_RI,
 	MAN_nf,
 	MAN_fi,
 	MAN_RE,
 	MAN_RS,
 	MAN_DT,
 	MAN_UC,
 	MAN_PD,
 	MAN_AT,
 	MAN_in,
 	MAN_OP,
 	MAN_EX,
 	MAN_EE,
 	MAN_UR,
 	MAN_UE,
+	MAN_MT,
+	MAN_ME,
 	MAN_MAX
 };
 
 enum	roff_next {
 	ROFF_NEXT_SIBLING = 0,
 	ROFF_NEXT_CHILD
 };
 
 /*
  * Indicates that a BODY's formatting has ended, but
  * the scope is still open.  Used for badly nested blocks.
  */
 enum	mdoc_endbody {
 	ENDBODY_NOT = 0,
 	ENDBODY_SPACE	/* Is broken: append a space. */
 };
 
 struct	roff_node {
 	struct roff_node *parent;  /* Parent AST node. */
 	struct roff_node *child;   /* First child AST node. */
 	struct roff_node *last;    /* Last child AST node. */
 	struct roff_node *next;    /* Sibling AST node. */
 	struct roff_node *prev;    /* Prior sibling AST node. */
 	struct roff_node *head;    /* BLOCK */
 	struct roff_node *body;    /* BLOCK/ENDBODY */
 	struct roff_node *tail;    /* BLOCK */
 	struct mdoc_arg	 *args;    /* BLOCK/ELEM */
 	union mdoc_data	 *norm;    /* Normalized arguments. */
 	char		 *string;  /* TEXT */
 	const struct tbl_span *span; /* TBL */
-	const struct eqn *eqn;	   /* EQN */
+	struct eqn_box	 *eqn;     /* EQN */
 	int		  line;    /* Input file line number. */
 	int		  pos;     /* Input file column number. */
 	int		  flags;
 #define	NODE_VALID	 (1 << 0)  /* Has been validated. */
 #define	NODE_ENDED	 (1 << 1)  /* Gone past body end mark. */
 #define	NODE_EOS	 (1 << 2)  /* At sentence boundary. */
 #define	NODE_LINE	 (1 << 3)  /* First macro/text on line. */
 #define	NODE_SYNPRETTY	 (1 << 4)  /* SYNOPSIS-style formatting. */
 #define	NODE_BROKEN	 (1 << 5)  /* Must validate parent when ending. */
 #define	NODE_DELIMO	 (1 << 6)
 #define	NODE_DELIMC	 (1 << 7)
 #define	NODE_NOSRC	 (1 << 8)  /* Generated node, not in input file. */
 #define	NODE_NOPRT	 (1 << 9)  /* Shall not print anything. */
 	int		  prev_font; /* Before entering this node. */
 	int		  aux;     /* Decoded node data, type-dependent. */
 	enum roff_tok	  tok;     /* Request or macro ID. */
 	enum roff_type	  type;    /* AST node type. */
 	enum roff_sec	  sec;     /* Current named section. */
 	enum mdoc_endbody end;     /* BODY */
 };
 
 struct	roff_meta {
 	char		 *msec;    /* Manual section, usually a digit. */
 	char		 *vol;     /* Manual volume title. */
 	char		 *os;      /* Operating system. */
 	char		 *arch;    /* Machine architecture. */
 	char		 *title;   /* Manual title, usually CAPS. */
 	char		 *name;    /* Leading manual name. */
 	char		 *date;    /* Normalized date. */
 	int		  hasbody; /* Document is not empty. */
-	enum mdoc_os	  os_e;    /* Operating system. */
+	int		  rcsids;  /* Bits indexed by enum mandoc_os. */
+	enum mandoc_os	  os_e;    /* Operating system. */
 };
 
 struct	roff_man {
 	struct roff_meta  meta;    /* Document meta-data. */
 	struct mparse	 *parse;   /* Parse pointer. */
 	struct roff	 *roff;    /* Roff parser state data. */
 	struct ohash	 *mdocmac; /* Mdoc macro lookup table. */
 	struct ohash	 *manmac;  /* Man macro lookup table. */
-	const char	 *defos;   /* Default operating system. */
+	const char	 *os_s;    /* Default operating system. */
 	struct roff_node *first;   /* The first node parsed. */
 	struct roff_node *last;    /* The last node parsed. */
 	struct roff_node *last_es; /* The most recent Es node. */
 	int		  quick;   /* Abort parse early. */
 	int		  flags;   /* Parse flags. */
 #define	MDOC_LITERAL	 (1 << 1)  /* In a literal scope. */
 #define	MDOC_PBODY	 (1 << 2)  /* In the document body. */
 #define	MDOC_NEWLINE	 (1 << 3)  /* First macro/text in a line. */
 #define	MDOC_PHRASE	 (1 << 4)  /* In a Bl -column phrase. */
 #define	MDOC_PHRASELIT	 (1 << 5)  /* Literal within a phrase. */
 #define	MDOC_FREECOL	 (1 << 6)  /* `It' invocation should close. */
 #define	MDOC_SYNOPSIS	 (1 << 7)  /* SYNOPSIS-style formatting. */
 #define	MDOC_KEEP	 (1 << 8)  /* In a word keep. */
 #define	MDOC_SMOFF	 (1 << 9)  /* Spacing is off. */
 #define	MDOC_NODELIMC	 (1 << 10) /* Disable closing delimiter handling. */
 #define	MAN_ELINE	 (1 << 11) /* Next-line element scope. */
 #define	MAN_BLINE	 (1 << 12) /* Next-line block scope. */
 #define	MDOC_PHRASEQF	 (1 << 13) /* Quote first word encountered. */
 #define	MDOC_PHRASEQL	 (1 << 14) /* Quote last word of this phrase. */
 #define	MDOC_PHRASEQN	 (1 << 15) /* Quote first word of the next phrase. */
 #define	MAN_LITERAL	  MDOC_LITERAL
 #define	MAN_NEWLINE	  MDOC_NEWLINE
 	enum roff_macroset macroset; /* Kind of high-level macros used. */
 	enum roff_sec	  lastsec; /* Last section seen. */
 	enum roff_sec	  lastnamed; /* Last standard section seen. */
 	enum roff_next	  next;    /* Where to put the next node. */
 };
 
 extern	const char *const *roff_name;
 
 
 void		 deroff(char **, const struct roff_node *);
 struct ohash	*roffhash_alloc(enum roff_tok, enum roff_tok);
 enum roff_tok	 roffhash_find(struct ohash *, const char *, size_t);
 void		 roffhash_free(struct ohash *);
 void		 roff_validate(struct roff_man *);
Index: vendor/mdocml/dist/roff_html.c
===================================================================
--- vendor/mdocml/dist/roff_html.c	(revision 321806)
+++ vendor/mdocml/dist/roff_html.c	(revision 321807)
@@ -1,93 +1,96 @@
-/*	$Id: roff_html.c,v 1.8 2017/06/08 12:54:58 schwarze Exp $ */
+/*	$Id: roff_html.c,v 1.11 2017/06/24 14:38:33 schwarze Exp $ */
 /*
  * Copyright (c) 2010 Kristaps Dzonsons 
  * Copyright (c) 2014, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include 
 
 #include 
 #include 
 
+#include "mandoc.h"
 #include "roff.h"
 #include "out.h"
 #include "html.h"
 
 #define	ROFF_HTML_ARGS struct html *h, const struct roff_node *n
 
 typedef	void	(*roff_html_pre_fp)(ROFF_HTML_ARGS);
 
 static	void	  roff_html_pre_br(ROFF_HTML_ARGS);
 static	void	  roff_html_pre_ce(ROFF_HTML_ARGS);
 static	void	  roff_html_pre_sp(ROFF_HTML_ARGS);
 
 static	const roff_html_pre_fp roff_html_pre_acts[ROFF_MAX] = {
 	roff_html_pre_br,  /* br */
 	roff_html_pre_ce,  /* ce */
 	NULL,  /* ft */
 	NULL,  /* ll */
 	NULL,  /* mc */
+	NULL,  /* po */
+	roff_html_pre_ce,  /* rj */
 	roff_html_pre_sp,  /* sp */
 	NULL,  /* ta */
 	NULL,  /* ti */
 };
 
 
 void
 roff_html_pre(struct html *h, const struct roff_node *n)
 {
 	assert(n->tok < ROFF_MAX);
 	if (roff_html_pre_acts[n->tok] != NULL)
 		(*roff_html_pre_acts[n->tok])(h, n);
 }
 
 static void
 roff_html_pre_br(ROFF_HTML_ARGS)
 {
 	struct tag	*t;
 
 	t = print_otag(h, TAG_DIV, "");
 	print_text(h, "\\~");  /* So the div isn't empty. */
 	print_tagq(h, t);
 }
 
 static void
 roff_html_pre_ce(ROFF_HTML_ARGS)
 {
 	for (n = n->child->next; n != NULL; n = n->next) {
 		if (n->type == ROFFT_TEXT) {
 			if (n->flags & NODE_LINE)
 				roff_html_pre_br(h, n);
 			print_text(h, n->string);
 		} else
 			roff_html_pre(h, n);
 	}
 	roff_html_pre_br(h, n);
 }
 
 static void
 roff_html_pre_sp(ROFF_HTML_ARGS)
 {
 	struct roffsu	 su;
 
 	SCALE_VS_INIT(&su, 1);
 	if ((n = n->child) != NULL) {
 		if (a2roffsu(n->string, &su, SCALE_VS) == NULL)
 			su.scale = 1.0;
 		else if (su.scale < 0.0)
 			su.scale = 0.0;
 	}
 	print_otag(h, TAG_DIV, "suh", &su);
 	print_text(h, "\\~");  /* So the div isn't empty. */
 }
Index: vendor/mdocml/dist/roff_int.h
===================================================================
--- vendor/mdocml/dist/roff_int.h	(revision 321806)
+++ vendor/mdocml/dist/roff_int.h	(revision 321807)
@@ -1,41 +1,39 @@
-/*	$Id: roff_int.h,v 1.7 2015/11/07 14:01:16 schwarze Exp $	*/
+/*	$Id: roff_int.h,v 1.9 2017/07/08 17:52:50 schwarze Exp $	*/
 /*
  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons 
  * Copyright (c) 2013, 2014, 2015 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
 struct roff_node *roff_node_alloc(struct roff_man *, int, int,
 			enum roff_type, int);
 void		  roff_node_append(struct roff_man *, struct roff_node *);
 void		  roff_word_alloc(struct roff_man *, int, int, const char *);
 void		  roff_word_append(struct roff_man *, const char *);
 void		  roff_elem_alloc(struct roff_man *, int, int, int);
 struct roff_node *roff_block_alloc(struct roff_man *, int, int, int);
 struct roff_node *roff_head_alloc(struct roff_man *, int, int, int);
 struct roff_node *roff_body_alloc(struct roff_man *, int, int, int);
-void		  roff_addeqn(struct roff_man *, const struct eqn *);
-void		  roff_addtbl(struct roff_man *, const struct tbl_span *);
 void		  roff_node_unlink(struct roff_man *, struct roff_node *);
 void		  roff_node_free(struct roff_node *);
 void		  roff_node_delete(struct roff_man *, struct roff_node *);
 
 /*
  * Functions called from roff.c need to be declared here,
  * not in libmdoc.h or libman.h, even if they are specific
  * to either the mdoc(7) or the man(7) parser.
  */
 
 void		  man_breakscope(struct roff_man *, int);
 void		  mdoc_argv_free(struct mdoc_arg *);
Index: vendor/mdocml/dist/roff_term.c
===================================================================
--- vendor/mdocml/dist/roff_term.c	(revision 321806)
+++ vendor/mdocml/dist/roff_term.c	(revision 321807)
@@ -1,221 +1,248 @@
-/*	$Id: roff_term.c,v 1.10 2017/06/08 12:54:58 schwarze Exp $ */
+/*	$Id: roff_term.c,v 1.14 2017/06/24 14:38:33 schwarze Exp $ */
 /*
  * Copyright (c) 2010, 2014, 2015, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include 
 
 #include 
 #include 
 
+#include "mandoc.h"
 #include "roff.h"
 #include "out.h"
 #include "term.h"
 
 #define	ROFF_TERM_ARGS struct termp *p, const struct roff_node *n
 
 typedef	void	(*roff_term_pre_fp)(ROFF_TERM_ARGS);
 
 static	void	  roff_term_pre_br(ROFF_TERM_ARGS);
 static	void	  roff_term_pre_ce(ROFF_TERM_ARGS);
 static	void	  roff_term_pre_ft(ROFF_TERM_ARGS);
 static	void	  roff_term_pre_ll(ROFF_TERM_ARGS);
 static	void	  roff_term_pre_mc(ROFF_TERM_ARGS);
+static	void	  roff_term_pre_po(ROFF_TERM_ARGS);
 static	void	  roff_term_pre_sp(ROFF_TERM_ARGS);
 static	void	  roff_term_pre_ta(ROFF_TERM_ARGS);
 static	void	  roff_term_pre_ti(ROFF_TERM_ARGS);
 
 static	const roff_term_pre_fp roff_term_pre_acts[ROFF_MAX] = {
 	roff_term_pre_br,  /* br */
 	roff_term_pre_ce,  /* ce */
 	roff_term_pre_ft,  /* ft */
 	roff_term_pre_ll,  /* ll */
 	roff_term_pre_mc,  /* mc */
+	roff_term_pre_po,  /* po */
+	roff_term_pre_ce,  /* rj */
 	roff_term_pre_sp,  /* sp */
 	roff_term_pre_ta,  /* ta */
 	roff_term_pre_ti,  /* ti */
 };
 
 
 void
 roff_term_pre(struct termp *p, const struct roff_node *n)
 {
 	assert(n->tok < ROFF_MAX);
 	(*roff_term_pre_acts[n->tok])(p, n);
 }
 
 static void
 roff_term_pre_br(ROFF_TERM_ARGS)
 {
 	term_newln(p);
 	if (p->flags & TERMP_BRIND) {
 		p->tcol->offset = p->tcol->rmargin;
 		p->tcol->rmargin = p->maxrmargin;
 		p->flags &= ~(TERMP_NOBREAK | TERMP_BRIND);
 	}
 }
 
 static void
 roff_term_pre_ce(ROFF_TERM_ARGS)
 {
-	const struct roff_node	*nch;
+	const struct roff_node	*nc1, *nc2;
 	size_t			 len, lm;
 
 	roff_term_pre_br(p, n);
 	lm = p->tcol->offset;
-	n = n->child->next;
-	while (n != NULL) {
-		nch = n;
+	nc1 = n->child->next;
+	while (nc1 != NULL) {
+		nc2 = nc1;
 		len = 0;
 		do {
-			if (n->type == ROFFT_TEXT) {
+			if (nc2->type == ROFFT_TEXT) {
 				if (len)
 					len++;
-				len += term_strlen(p, nch->string);
+				len += term_strlen(p, nc2->string);
 			}
-			nch = nch->next;
-		} while (nch != NULL && (n->type != ROFFT_TEXT ||
-		    (n->flags & NODE_LINE) == 0));
+			nc2 = nc2->next;
+		} while (nc2 != NULL && (nc2->type != ROFFT_TEXT ||
+		    (nc2->flags & NODE_LINE) == 0));
 		p->tcol->offset = len >= p->tcol->rmargin ? 0 :
 		    lm + len >= p->tcol->rmargin ? p->tcol->rmargin - len :
+		    n->tok == ROFF_rj ? p->tcol->rmargin - len :
 		    (lm + p->tcol->rmargin - len) / 2;
-		while (n != nch) {
-			if (n->type == ROFFT_TEXT)
-				term_word(p, n->string);
+		while (nc1 != nc2) {
+			if (nc1->type == ROFFT_TEXT)
+				term_word(p, nc1->string);
 			else
-				roff_term_pre(p, n);
-			n = n->next;
+				roff_term_pre(p, nc1);
+			nc1 = nc1->next;
 		}
 		p->flags |= TERMP_NOSPACE;
 		term_flushln(p);
 	}
 	p->tcol->offset = lm;
 }
 
 static void
 roff_term_pre_ft(ROFF_TERM_ARGS)
 {
 	switch (*n->child->string) {
 	case '4':
 	case '3':
 	case 'B':
 		term_fontrepl(p, TERMFONT_BOLD);
 		break;
 	case '2':
 	case 'I':
 		term_fontrepl(p, TERMFONT_UNDER);
 		break;
 	case 'P':
 		term_fontlast(p);
 		break;
 	case '1':
 	case 'C':
 	case 'R':
 		term_fontrepl(p, TERMFONT_NONE);
 		break;
 	default:
 		break;
 	}
 }
 
 static void
 roff_term_pre_ll(ROFF_TERM_ARGS)
 {
 	term_setwidth(p, n->child != NULL ? n->child->string : NULL);
 }
 
 static void
 roff_term_pre_mc(ROFF_TERM_ARGS)
 {
 	if (p->col) {
 		p->flags |= TERMP_NOBREAK;
 		term_flushln(p);
 		p->flags &= ~(TERMP_NOBREAK | TERMP_NOSPACE);
 	}
 	if (n->child != NULL) {
 		p->mc = n->child->string;
 		p->flags |= TERMP_NEWMC;
 	} else
 		p->flags |= TERMP_ENDMC;
 }
 
 static void
+roff_term_pre_po(ROFF_TERM_ARGS)
+{
+	struct roffsu	 su;
+	static int	 po, polast;
+	int		 ponew;
+
+	if (n->child != NULL &&
+	    a2roffsu(n->child->string, &su, SCALE_EM) != NULL) {
+		ponew = term_hen(p, &su);
+		if (*n->child->string == '+' ||
+		    *n->child->string == '-')
+			ponew += po;
+	} else
+		ponew = polast;
+	polast = po;
+	po = ponew;
+
+	ponew = po - polast + (int)p->tcol->offset;
+	p->tcol->offset = ponew > 0 ? ponew : 0;
+}
+
+static void
 roff_term_pre_sp(ROFF_TERM_ARGS)
 {
 	struct roffsu	 su;
 	int		 len;
 
 	if (n->child != NULL) {
 		if (a2roffsu(n->child->string, &su, SCALE_VS) == NULL)
 			su.scale = 1.0;
 		len = term_vspan(p, &su);
 	} else
 		len = 1;
 
 	if (len < 0)
 		p->skipvsp -= len;
 	else
 		while (len--)
 			term_vspace(p);
 
 	roff_term_pre_br(p, n);
 }
 
 static void
 roff_term_pre_ta(ROFF_TERM_ARGS)
 {
 	term_tab_set(p, NULL);
 	for (n = n->child; n != NULL; n = n->next)
 		term_tab_set(p, n->string);
 }
 
 static void
 roff_term_pre_ti(ROFF_TERM_ARGS)
 {
 	struct roffsu	 su;
 	const char	*cp;
 	int		 len, sign;
 
 	roff_term_pre_br(p, n);
 
 	if (n->child == NULL)
 		return;
 	cp = n->child->string;
 	if (*cp == '+') {
 		sign = 1;
 		cp++;
 	} else if (*cp == '-') {
 		sign = -1;
 		cp++;
 	} else
 		sign = 0;
 
 	if (a2roffsu(cp, &su, SCALE_EM) == NULL)
 		return;
-	len = term_hspan(p, &su) / 24;
+	len = term_hen(p, &su);
 
 	if (sign == 0) {
 		p->ti = len - p->tcol->offset;
 		p->tcol->offset = len;
 	} else if (sign == 1) {
 		p->ti = len;
 		p->tcol->offset += len;
 	} else if ((size_t)len < p->tcol->offset) {
 		p->ti = -len;
 		p->tcol->offset -= len;
 	} else {
 		p->ti = -p->tcol->offset;
 		p->tcol->offset = 0;
 	}
 }
Index: vendor/mdocml/dist/roff_validate.c
===================================================================
--- vendor/mdocml/dist/roff_validate.c	(revision 321806)
+++ vendor/mdocml/dist/roff_validate.c	(revision 321807)
@@ -1,95 +1,97 @@
-/*	$Id: roff_validate.c,v 1.7 2017/06/06 15:01:04 schwarze Exp $ */
+/*	$Id: roff_validate.c,v 1.9 2017/06/14 22:51:25 schwarze Exp $ */
 /*
  * Copyright (c) 2010, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include 
 
 #include 
 #include 
 
 #include "mandoc.h"
 #include "roff.h"
 #include "libmandoc.h"
 #include "roff_int.h"
 
 #define	ROFF_VALID_ARGS struct roff_man *man, struct roff_node *n
 
 typedef	void	(*roff_valid_fp)(ROFF_VALID_ARGS);
 
 static	void	  roff_valid_ft(ROFF_VALID_ARGS);
 
 static	const roff_valid_fp roff_valids[ROFF_MAX] = {
 	NULL,  /* br */
 	NULL,  /* ce */
 	roff_valid_ft,  /* ft */
 	NULL,  /* ll */
 	NULL,  /* mc */
+	NULL,  /* po */
+	NULL,  /* rj */
 	NULL,  /* sp */
 	NULL,  /* ta */
 	NULL,  /* ti */
 };
 
 
 void
 roff_validate(struct roff_man *man)
 {
 	struct roff_node	*n;
 
 	n = man->last;
 	assert(n->tok < ROFF_MAX);
 	if (roff_valids[n->tok] != NULL)
 		(*roff_valids[n->tok])(man, n);
 }
 
 static void
 roff_valid_ft(ROFF_VALID_ARGS)
 {
 	char	*cp;
 
 	if (n->child == NULL) {
 		man->next = ROFF_NEXT_CHILD;
 		roff_word_alloc(man, n->line, n->pos, "P");
 		man->last = n;
 		return;
 	}
 
 	cp = n->child->string;
 	switch (*cp) {
 	case '1':
 	case '2':
 	case '3':
 	case '4':
 	case 'I':
 	case 'P':
 	case 'R':
 		if (cp[1] == '\0')
 			return;
 		break;
 	case 'B':
 		if (cp[1] == '\0' || (cp[1] == 'I' && cp[2] == '\0'))
 			return;
 		break;
 	case 'C':
 		if (cp[1] == 'W' && cp[2] == '\0')
 			return;
 		break;
 	default:
 		break;
 	}
 
 	mandoc_vmsg(MANDOCERR_FT_BAD, man->parse,
 	    n->line, n->pos, "ft %s", cp);
 	roff_node_delete(man, n);
 }
Index: vendor/mdocml/dist/soelim.1
===================================================================
--- vendor/mdocml/dist/soelim.1	(revision 321806)
+++ vendor/mdocml/dist/soelim.1	(revision 321807)
@@ -1,86 +1,86 @@
-.\"	$Id: soelim.1,v 1.4 2017/03/18 19:56:01 schwarze Exp $
+.\"	$Id: soelim.1,v 1.5 2017/07/04 23:40:01 schwarze Exp $
 .\"
 .\" Copyright (c) 2014 Baptiste Daroussin 
 .\" All rights reserved.
 .\"
 .\" Redistribution and use in source and binary forms, with or without
 .\" modification, are permitted provided that the following conditions
 .\" are met:
 .\" 1. Redistributions of source code must retain the above copyright
 .\"    notice, this list of conditions and the following disclaimer.
 .\" 2. Redistributions in binary form must reproduce the above copyright
 .\"    notice, this list of conditions and the following disclaimer in the
 .\"    documentation and/or other materials provided with the distribution.
 .\"
 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: March 18 2017 $
+.Dd $Mdocdate: July 4 2017 $
 .Dt SOELIM 1
 .Os
 .Sh NAME
 .Nm soelim
 .Nd interpret .so requests in manpages
 .Sh SYNOPSIS
 .Nm
 .Op Fl Crtv
 .Op Fl I Ar dir
 .Op Ar files ...
 .Sh DESCRIPTION
 .Nm
 reads
 .Ar files
 lines by lines.
 .Pp
 If a line starts by:
 .Dq .so anotherfile
 it replace the line by processing
 .Dq anotherfile .
 Otherwise the line is printed to stdout.
 .Bl -tag -width "-I dir"
 .It Fl C
 Recognise
 .Em .so
 when not followed by a space character.
 .It Fl r
 Compatibility with GNU groff's
-.Xr soelim 1
+.Nm soelim
 (does nothing).
 .It Fl t
 Compatibility with GNU groff's
-.Xr soelim 1
+.Nm soelim
 (does nothing).
 .It Fl v
 Compatibility with GNU groff's
-.Xr soelim 1
+.Nm soelim
 (does nothing).
 .It Fl I Ar dir
 This option specify directories where
 .Nm
 searches for files (both those on the command line and those named in
 .Dq .so
 directive.)
 This options may be specified multiple times.
 The directories will be searched in the order specified.
 .El
 .Pp
 The files are always searched first in the current directory.
 .Pp
 A file specified with an absolute path will be opened directly without
 performing a search.
 .Sh SEE ALSO
 .Xr mandoc 1
 .Sh AUTHORS
 This version of the
 .Nm
 utility was written by
 .An Baptiste Daroussin Aq Mt bapt@freebsd.org .
Index: vendor/mdocml/dist/st.c
===================================================================
--- vendor/mdocml/dist/st.c	(revision 321806)
+++ vendor/mdocml/dist/st.c	(revision 321807)
@@ -1,37 +1,38 @@
-/*	$Id: st.c,v 1.13 2015/10/06 18:32:20 schwarze Exp $ */
+/*	$Id: st.c,v 1.14 2017/06/24 14:38:33 schwarze Exp $ */
 /*
  * Copyright (c) 2009 Kristaps Dzonsons 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 
+#include "mandoc.h"
 #include "roff.h"
 #include "mdoc.h"
 #include "libmdoc.h"
 
 #define LINE(x, y) \
 	if (0 == strcmp(p, x)) return(y);
 
 const char *
 mdoc_a2st(const char *p)
 {
 
 #include "st.in"
 
 	return NULL;
 }
Index: vendor/mdocml/dist/st.in
===================================================================
--- vendor/mdocml/dist/st.in	(revision 321806)
+++ vendor/mdocml/dist/st.in	(revision 321807)
@@ -1,77 +1,76 @@
-/*	$Id: st.in,v 1.28 2015/02/17 20:37:17 schwarze Exp $ */
+/*	$Id: st.in,v 1.29 2017/06/24 13:49:29 schwarze Exp $ */
 /*
  * Copyright (c) 2009, 2010 Kristaps Dzonsons 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
 /*
  * This file defines the .St macro arguments.  If you add a new
  * standard, make sure that the left-and side corresponds to the .St
  * argument (like .St -p1003.1) and the right-hand side corresponds to
  * the formatted output string.
  *
  * Be sure to escape strings.
  * The non-breaking blanks prevent ending an output line right before
  * a number.  Groff prevent line breaks at the same places.
  *
  * REMEMBER TO ADD NEW STANDARDS TO MDOC.7!
  */
 
 LINE("-p1003.1-88",	"IEEE Std 1003.1-1988 (\\(LqPOSIX.1\\(Rq)")
 LINE("-p1003.1-90",	"IEEE Std 1003.1-1990 (\\(LqPOSIX.1\\(Rq)")
 LINE("-p1003.1-96",	"ISO/IEC 9945-1:1996 (\\(LqPOSIX.1\\(Rq)")
 LINE("-p1003.1-2001",	"IEEE Std 1003.1-2001 (\\(LqPOSIX.1\\(Rq)")
 LINE("-p1003.1-2004",	"IEEE Std 1003.1-2004 (\\(LqPOSIX.1\\(Rq)")
 LINE("-p1003.1-2008",	"IEEE Std 1003.1-2008 (\\(LqPOSIX.1\\(Rq)")
-LINE("-p1003.1-2013",	"IEEE Std 1003.1-2008/Cor 1-2013 (\\(LqPOSIX.1\\(Rq)")
 LINE("-p1003.1",	"IEEE Std 1003.1 (\\(LqPOSIX.1\\(Rq)")
 LINE("-p1003.1b",	"IEEE Std 1003.1b (\\(LqPOSIX.1b\\(Rq)")
 LINE("-p1003.1b-93",	"IEEE Std 1003.1b-1993 (\\(LqPOSIX.1b\\(Rq)")
 LINE("-p1003.1c-95",	"IEEE Std 1003.1c-1995 (\\(LqPOSIX.1c\\(Rq)")
 LINE("-p1003.1g-2000",	"IEEE Std 1003.1g-2000 (\\(LqPOSIX.1g\\(Rq)")
 LINE("-p1003.1i-95",	"IEEE Std 1003.1i-1995 (\\(LqPOSIX.1i\\(Rq)")
 LINE("-p1003.2",	"IEEE Std 1003.2 (\\(LqPOSIX.2\\(Rq)")
 LINE("-p1003.2-92",	"IEEE Std 1003.2-1992 (\\(LqPOSIX.2\\(Rq)")
 LINE("-p1003.2a-92",	"IEEE Std 1003.2a-1992 (\\(LqPOSIX.2\\(Rq)")
 LINE("-isoC",		"ISO/IEC 9899:1990 (\\(LqISO\\~C90\\(Rq)")
 LINE("-isoC-90",	"ISO/IEC 9899:1990 (\\(LqISO\\~C90\\(Rq)")
 LINE("-isoC-amd1",	"ISO/IEC 9899/AMD1:1995 (\\(LqISO\\~C90, Amendment 1\\(Rq)")
 LINE("-isoC-tcor1",	"ISO/IEC 9899/TCOR1:1994 (\\(LqISO\\~C90, Technical Corrigendum 1\\(Rq)")
 LINE("-isoC-tcor2",	"ISO/IEC 9899/TCOR2:1995 (\\(LqISO\\~C90, Technical Corrigendum 2\\(Rq)")
 LINE("-isoC-99",	"ISO/IEC 9899:1999 (\\(LqISO\\~C99\\(Rq)")
 LINE("-isoC-2011",	"ISO/IEC 9899:2011 (\\(LqISO\\~C11\\(Rq)")
 LINE("-iso9945-1-90",	"ISO/IEC 9945-1:1990 (\\(LqPOSIX.1\\(Rq)")
 LINE("-iso9945-1-96",	"ISO/IEC 9945-1:1996 (\\(LqPOSIX.1\\(Rq)")
 LINE("-iso9945-2-93",	"ISO/IEC 9945-2:1993 (\\(LqPOSIX.2\\(Rq)")
 LINE("-ansiC",		"ANSI X3.159-1989 (\\(LqANSI\\~C89\\(Rq)")
 LINE("-ansiC-89",	"ANSI X3.159-1989 (\\(LqANSI\\~C89\\(Rq)")
 LINE("-ieee754",	"IEEE Std 754-1985")
 LINE("-iso8802-3",	"ISO 8802-3: 1989")
 LINE("-iso8601",	"ISO 8601")
 LINE("-ieee1275-94",	"IEEE Std 1275-1994 (\\(LqOpen Firmware\\(Rq)")
 LINE("-xpg3",		"X/Open Portability Guide Issue\\~3 (\\(LqXPG3\\(Rq)")
 LINE("-xpg4",		"X/Open Portability Guide Issue\\~4 (\\(LqXPG4\\(Rq)")
 LINE("-xpg4.2",		"X/Open Portability Guide Issue\\~4, Version\\~2 (\\(LqXPG4.2\\(Rq)")
 LINE("-xbd5",		"X/Open Base Definitions Issue\\~5 (\\(LqXBD5\\(Rq)")
 LINE("-xcu5",		"X/Open Commands and Utilities Issue\\~5 (\\(LqXCU5\\(Rq)")
 LINE("-xsh4.2",		"X/Open System Interfaces and Headers Issue\\~4, Version\\~2 (\\(LqXSH4.2\\(Rq)")
 LINE("-xsh5",		"X/Open System Interfaces and Headers Issue\\~5 (\\(LqXSH5\\(Rq)")
 LINE("-xns5",		"X/Open Networking Services Issue\\~5 (\\(LqXNS5\\(Rq)")
 LINE("-xns5.2",		"X/Open Networking Services Issue\\~5.2 (\\(LqXNS5.2\\(Rq)")
 LINE("-xcurses4.2",	"X/Open Curses Issue\\~4, Version\\~2 (\\(LqXCURSES4.2\\(Rq)")
 LINE("-susv1",		"Version\\~1 of the Single UNIX Specification (\\(LqSUSv1\\(Rq)")
 LINE("-susv2",		"Version\\~2 of the Single UNIX Specification (\\(LqSUSv2\\(Rq)")
 LINE("-susv3",		"Version\\~3 of the Single UNIX Specification (\\(LqSUSv3\\(Rq)")
 LINE("-susv4",		"Version\\~4 of the Single UNIX Specification (\\(LqSUSv4\\(Rq)")
 LINE("-svid4",		"System\\~V Interface Definition, Fourth Edition (\\(LqSVID4\\(Rq)")
Index: vendor/mdocml/dist/tbl.7
===================================================================
--- vendor/mdocml/dist/tbl.7	(revision 321806)
+++ vendor/mdocml/dist/tbl.7	(revision 321807)
@@ -1,366 +1,432 @@
-.\"	$Id: tbl.7,v 1.27 2017/06/08 18:11:22 schwarze Exp $
+.\"	$Id: tbl.7,v 1.28 2017/06/28 00:59:57 schwarze Exp $
 .\"
 .\" Copyright (c) 2010, 2011 Kristaps Dzonsons 
 .\" Copyright (c) 2014, 2015, 2017 Ingo Schwarze 
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above
 .\" copyright notice and this permission notice appear in all copies.
 .\"
 .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: June 8 2017 $
+.Dd $Mdocdate: June 28 2017 $
 .Dt TBL 7
 .Os
 .Sh NAME
 .Nm tbl
 .Nd tbl language reference for mandoc
 .Sh DESCRIPTION
 The
 .Nm tbl
-language is a table-formatting language.
+language formats tables.
 It is used within
 .Xr mdoc 7
 and
 .Xr man 7
-.Ux
-manual pages.
+pages.
 This manual describes the subset of the
 .Nm
 language accepted by the
 .Xr mandoc 1
 utility.
 .Pp
-Tables within
-.Xr mdoc 7
-or
-.Xr man 7
-are enclosed by the
-.Sq TS
-and
-.Sq TE
-macro tags, whose precise syntax is documented in
-.Xr roff 7 .
-Tables consist of a series of options on a single line, followed by the
-table layout, followed by data.
-.Pp
-For example, the following creates a boxed table with digits centered in
-the cells.
-.Bd -literal -offset indent
-\&.TS
-tab(:) box;
-c5 c5 c5.
-1:2:3
-4:5:6
-\&.TE
-.Ed
-.Pp
-When formatted, the following output is produced:
-.Bd -filled -offset indent -compact
-.TS
-tab(:) box;
-c5 c5 c5.
-1:2:3
-4:5:6
-.TE
-.Ed
-.Sh TABLE STRUCTURE
-Tables are enclosed by the
-.Sq TS
-and
-.Sq TE
+Each table is started with a
 .Xr roff 7
-macros.
-A table consists of an optional single line of table
-.Sx Options
-terminated by a semicolon, followed by one or more lines of
+.Ic \&TS
+macro, consist of at most one line of
+.Sx Options ,
+one or more
 .Sx Layout
-specifications terminated by a period, then
-.Sx Data .
+lines, one or more
+.Sx Data
+lines, and ends with a
+.Ic \&TE
+macro.
 All input must be 7-bit ASCII.
-Example:
-.Bd -literal -offset indent
-\&.TS
-box tab(:);
-c | c
-| c | c.
-1:2
-3:4
-\&.TE
-.Ed
-.Pp
-Table data is
-.Em pre-processed ,
-that is, data rows are parsed then inserted into the underlying stream
-of input data.
-This allows data rows to be interspersed by arbitrary
-.Xr roff 7 ,
-.Xr mdoc 7 ,
-and
-.Xr man 7
-macros such as
-.Bd -literal -offset indent
-\&.TS
-tab(:);
-c c c.
-1:2:3
-\&.Ao
-3:2:1
-\&.Ac
-\&.TE
-.Ed
-.Pp
-in the case of
-.Xr mdoc 7
-or
-.Bd -literal -offset indent
-\&.TS
-tab(:);
-c c c.
-\&.ds ab 2
-1:\e*(ab:3
-\&.I
-3:2:1
-\&.TE
-.Ed
-.Pp
-in the case of
-.Xr man 7 .
 .Ss Options
-The first line of a table may contain options separated by spaces, tabs,
-or commas and terminated by a semicolon.
-If the first line does not have a terminating semicolon, it is assumed
-that no options are specified and instead a
+If the first input line of a table ends with a semicolon, it contains
+case-insensitive options separated by spaces, tabs, or commas.
+Otherwise, it is interpreted as the first
 .Sx Layout
-is processed.
-Some options require arguments enclosed by parentheses.
-The following case-insensitive options are available:
+line.
+.Pp
+The following options are available.
+Some of them require arguments enclosed in parentheses:
 .Bl -tag -width Ds
 .It Cm allbox
 Draw a single-line box around each table cell.
-Currently treated as a synonym for
-.Cm box .
 .It Cm box
 Draw a single-line box around the table.
 For GNU compatibility, this may also be invoked with
 .Cm frame .
 .It Cm center
 Center the table instead of left-adjusting it.
 For GNU compatibility, this may also be invoked with
 .Cm centre .
 .It Cm decimalpoint
 Use the single-character argument as the decimal point with the
 .Cm n
 layout key.
 This is a GNU extension.
 .It Cm delim
 Use the two characters of the argument as
 .Xr eqn 7
 delimiters.
 Currently unsupported.
 .It Cm doublebox
 Draw a double-line box around the table.
 For GNU compatibility, this may also be invoked with
 .Cm doubleframe .
 .It Cm expand
 Increase the width of the table to the current line length.
 Currently ignored.
 .It Cm linesize
 Draw lines with the point size given by the unsigned integer argument.
 Currently ignored.
 .It Cm nokeep
 Allow page breaks within the table.
 This is a GNU extension and currently ignored.
 .It Cm nospaces
 Ignore leading and trailing spaces in data cells.
 This is a GNU extension and currently ignored.
 .It Cm nowarn
 Suppress warnings about tables exceeding the current line length.
 This is a GNU extension and currently ignored.
 .It Cm tab
 Use the single-character argument as a delimiter between data cells.
-By default, the tab character is used.
+By default, the horizontal tabulator character is used.
 .El
 .Ss Layout
-The table layout follows
+The table layout follows an
 .Sx Options
-or a
-.Sq \&T&
-macro invocation.
-Layout specifies how data rows are displayed on output.
-Each layout line corresponds to a line of data; the last layout line
-applies to all remaining data lines.
-Layout lines may also be separated by a comma.
-Each layout cell consists of one of the following case-insensitive keys:
+line or a
+.Xr roff 7
+.Ic \&TS
+or
+.Ic \&T&
+macro.
+Each layout line specifies how one line of
+.Sx Data
+is formatted.
+The last layout line ends with a full stop.
+It also applies to all remaining data lines.
+Multiple layout lines can be joined by commas on a single physical
+input line.
+.Pp
+Each layout line consists of one or more layout cell specifications,
+optionally separated by whitespace.
+The following case-insensitive key characters start a new cell
+specification:
 .Bl -tag -width 2n
 .It Cm c
-Center a literal string within its column.
+Center the string in this cell.
 .It Cm r
-Right-justify a literal string within its column.
+Right-justify the string in this cell.
 .It Cm l
-Left-justify a literal string within its column.
+Left-justify the string in this cell.
 .It Cm n
 Justify a number around its last decimal point.
-If the decimal point is not found on the number, it's assumed to trail
-the number.
+If no decimal point is found in the number,
+it is assumed to trail the number.
 .It Cm s
 Horizontally span columns from the last
-.No non- Ns Cm s
-data cell.
-It is an error if spanning columns follow a
-.Cm \-
+.Pf non- Cm s
+layout cell.
+It is an error if a column span follows a
+.Cm _
 or
-.Cm \(ba
-cell, or come first.
-This option is not supported by
-.Xr mandoc 1 .
+.Cm =
+cell, or comes first on a layout line.
+The combined cell as a whole consumes only one cell
+of the corresponding data line.
 .It Cm a
-Left-justify a literal string and pad with one space.
+Left-justify a string and pad with one space.
 .It Cm ^
 Vertically span rows from the last
-.No non- Ns Cm ^
-data cell.
-It is an error to invoke a vertical span on the first layout row.
-Unlike a horizontal spanner, you must specify an empty cell (if it not
-empty, the data is discarded) in the corresponding data cell.
-.It Cm \-
-Replace the data cell (its contents will be lost) with a single
-horizontal line.
-This may also be invoked with
-.Cm _ .
+.Pf non- Cm ^
+layout cell.
+It is an error to invoke a vertical span on the first layout line.
+Unlike a horizontal span, a vertical span consumes a data cell
+and discards the content.
+.It Cm _
+Draw a single horizontal line in this cell.
+This consumes a data cell and discards the content.
+It may also be invoked with
+.Cm \- .
 .It Cm =
-Replace the data cell (its contents will be lost) with a double
-horizontal line.
-.It Cm \(ba
-Emit a vertical bar instead of data.
-.It Cm \(ba\(ba
-Emit a double-vertical bar instead of data.
+Draw a double horizontal line in this cell.
+This consumes a data cell and discards the content.
 .El
 .Pp
-Keys may be followed by a set of modifiers.
-A modifier is either a modifier key or a natural number for specifying
-the spacing to the right of the column.
-The following case-insensitive modifier keys are available:
+Each cell key may be followed by zero or more of the following
+case-insensitive modifiers:
 .Bl -tag -width 2n
 .It Cm b
-Use a bold font for the contents of this column.
+Use a bold font for the contents of this cell.
 .It Cm d
-Move cell content down to the last cell of a vertical span.
+Move content down to the last row of this vertical span.
 Currently ignored.
 .It Cm e
 Make this column wider to match the maximum width
 of any other column also having the
 .Cm e
 modifier.
 .It Cm f
-The next character selects the font to use for this column.
+The next character selects the font to use for this cell.
 See the
 .Xr roff 7
 manual for supported one-character font names.
 .It Cm i
-Use an italic font for the contents of this column.
+Use an italic font for the contents of this cell.
 .It Cm m
 Specify a cell start macro.
 This is a GNU extension and currently unsupported.
 .It Cm p
 Set the point size to the following unsigned argument,
 or change it by the following signed argument.
 Currently ignored.
 .It Cm v
 Set the vertical line spacing to the following unsigned argument,
 or change it by the following signed argument.
 Currently ignored.
 .It Cm t
-Do not vertically center cell content in the vertical span,
-leave it at the top.
+Do not vertically center content in this vertical span,
+leave it in the top row.
 Currently ignored.
 .It Cm u
-Move cell content up by half a table line.
+Move cell content up by half a table row.
 Currently ignored.
 .It Cm w
-Specify the minimum column width.
+Specify a minimum column width.
 .It Cm x
 After determining the width of all other columns, distribute the
 rest of the line length among all columns having the
 .Cm x
 modifier.
 .It Cm z
 Do not use this cell for determining the width of this column.
+.It Cm \&|
+Draw a single vertical line to the right of this cell.
+.It Cm ||
+Draw a double vertical line to the right of this cell.
 .El
 .Pp
-For example, the following layout specifies a center-justified column of
-minimum width 10, followed by vertical bar, followed by a left-justified
-column of minimum width 10, another vertical bar, then a column using
-bold font justified about the decimal point in numbers:
-.Pp
-.Dl cw10 | lw10 | nfB
+If a modifier consists of decimal digits,
+it specifies a minimum spacing in units of
+.Cm n
+between this column and the next column to the right.
+The default is 3.
+If there is a vertical line, it is drawn inside the spacing.
 .Ss Data
-The data section follows the last layout row.
-By default, cells in a data section are delimited by a tab.
-This behaviour may be changed with the
+The data section follows the last
+.Sx Layout
+line.
+Each data line consists of one or more data cells, delimited by
 .Cm tab
-option.
-If
-.Cm _
+characters.
+.Pp
+If a data cells contains only the single character
+.Ql _
 or
-.Cm =
-is specified, a single or double line, respectively, is drawn across the
-data field.
-If
-.Cm \e-
+.Ql = ,
+a single or double horizontal line is drawn across the cell,
+joining its neighbours.
+If a data cells contains only the two character sequence
+.Ql \e_
 or
-.Cm \e=
-is specified, a line is drawn within the data field (i.e. terminating
-within the cell and not draw to the border).
-If the last cell of a line is
-.Cm T{ ,
-all subsequent lines are included as part of the cell until
-.Cm T}
-is specified as its own data cell.
-It may then be followed by a tab
-.Pq or as designated by Cm tab
-or an end-of-line to terminate the row.
+.Ql \e= ,
+a single or double horizontal line is drawn inside the cell,
+not joining its neighbours.
+If a data line contains nothing but the single character
+.Ql _
+or
+.Ql = ,
+a horizontal line across the whole table is inserted
+without consuming a layout row.
+.Pp
+In place of any data cell, a text block can be used.
+It starts with
+.Ic \&T{
+at the end of a physical input line.
+Input line breaks inside the text block
+neither end the text block nor its data cell.
+It only ends if
+.Ic \&T}
+occurs at the beginning of a physical input line and is followed
+by an end-of-cell indicator.
+If the
+.Ic \&T}
+is followed by the end of the physical input line, the text block,
+the data cell, and the data line ends at this point.
+If the
+.Ic \&T}
+is followed by the
+.Cm tab
+character, only the text block and the data cell end,
+but the data line continues with the data cell following the
+.Cm tab
+character.
+If
+.Ic \&T}
+is followed by any other character, it does not end the text block,
+which instead continues to the following physical input line.
+.Sh EXAMPLES
+String justification and font selection:
+.Bd -literal -offset indent
+\&.TS
+rb c  lb
+r  ci l.
+r	center	l
+ri	ce	le
+right	c	left
+\&.TE
+.Ed
+.Bd -filled -offset indent
+.TS
+rb c  lb
+r  ci l.
+r	center	l
+ri	ce	le
+right	c	left
+.TE
+.Ed
+.Pp
+Some ports in
+.Ox 6.1
+to show number alignment and line drawing:
+.Bd -literal -offset indent
+\&.TS
+box tab(:);
+r| l
+r  n.
+software:version
+_
+AFL:2.39b
+Mutt:1.8.0
+Ruby:1.8.7.374
+TeX Live:2015
+\&.TE
+.Ed
+.Bd -filled -offset indent
+.TS
+box tab(:);
+r| l
+r  n.
+software:version
+_
+AFL:2.39b
+Mutt:1.8.0
+Ruby:1.8.7.374
+TeX Live:2015 
+.TE
+.Ed
+.sp 2v
+Spans and skipping width calculations:
+.Bd -literal -offset indent
+\&.TS
+box tab(:);
+lz  s | rt
+lt| cb| ^
+^ | rz  s.
+left:r
+l:center:
+:right
+\&.TE
+.Ed
+.Bd -filled -offset indent
+.TS
+box tab(:);
+lz  s | rt
+lt| cb| ^
+^ | rz  s.
+left:r
+l:center:
+:right
+.TE
+.Ed
+.sp 2v
+Text blocks, specifying spacings and specifying and equalizing
+column widths, putting lines into individual cells, and overriding
+.Cm allbox :
+.Bd -literal -offset indent
+\&.TS
+allbox tab(:);
+le le||7 lw10.
+The fourth line:_:line 1
+of this column:=:line 2
+determines:\_:line 3
+the column width.:T{
+This text is too wide to fit into a column of width 17.
+T}:line 4
+T{
+No break here.
+T}::line 5
+\&.TE
+.Ed
+.Bd -filled -offset indent
+.TS
+allbox tab(:);
+le le||7 lw10.
+The fourth line:_:line 1
+of this column:=:line 2
+determines:\_:line 3
+the column width.:T{
+This text is too wide to fit into a column of width 17.
+T}:line 4
+T{
+No break here.
+T}::line 5
+.TE
+.Ed
+.sp 2v
+These examples were constructed to demonstrate many
+.Nm
+features in a compact way.
+In real manual pages, keep tables as simple as possible:
+Like that, they usually look better, are less fragile, and more portable.
 .Sh COMPATIBILITY
 The
 .Xr mandoc 1
 implementation of
 .Nm
 doesn't support
 .Xr mdoc 7
 and
 .Xr man 7
 macros and
 .Xr eqn 7
 equations inside tables.
 .Sh SEE ALSO
 .Xr mandoc 1 ,
 .Xr man 7 ,
 .Xr mandoc_char 7 ,
 .Xr mdoc 7 ,
 .Xr roff 7
 .Rs
 .%A M. E. Lesk
 .%T Tbl\(emA Program to Format Tables
 .%D June 11, 1976
 .Re
 .Sh HISTORY
 The tbl utility, a preprocessor for troff, was originally written by M.
 E. Lesk at Bell Labs in 1975.
 The GNU reimplementation of tbl, part of the groff package, was released
 in 1990 by James Clark.
 A standalone tbl implementation was written by Kristaps Dzonsons in
 2010.
 This formed the basis of the implementation that is part of the
 .Xr mandoc 1
 utility.
 .Sh AUTHORS
 This
 .Nm
 reference was written by
-.An Kristaps Dzonsons Aq Mt kristaps@bsd.lv .
+.An Kristaps Dzonsons Aq Mt kristaps@bsd.lv
+and
+.An Ingo Schwarze Aq Mt schwarze@openbsd.org .
Index: vendor/mdocml/dist/tbl.c
===================================================================
--- vendor/mdocml/dist/tbl.c	(revision 321806)
+++ vendor/mdocml/dist/tbl.c	(revision 321807)
@@ -1,184 +1,179 @@
-/*	$Id: tbl.c,v 1.41 2017/06/08 18:11:22 schwarze Exp $ */
+/*	$Id: tbl.c,v 1.42 2017/07/08 17:52:50 schwarze Exp $ */
 /*
  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons 
  * Copyright (c) 2011, 2015 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc.h"
 #include "mandoc_aux.h"
 #include "libmandoc.h"
 #include "libroff.h"
 
 
-enum rofferr
+void
 tbl_read(struct tbl_node *tbl, int ln, const char *p, int pos)
 {
 	const char	*cp;
 	int		 active;
 
 	/*
 	 * In the options section, proceed to the layout section
 	 * after a semicolon, or right away if there is no semicolon.
 	 * Ignore semicolons in arguments.
 	 */
 
 	if (tbl->part == TBL_PART_OPTS) {
 		tbl->part = TBL_PART_LAYOUT;
 		active = 1;
 		for (cp = p + pos; *cp != '\0'; cp++) {
 			switch (*cp) {
 			case '(':
 				active = 0;
 				continue;
 			case ')':
 				active = 1;
 				continue;
 			case ';':
 				if (active)
 					break;
 				continue;
 			default:
 				continue;
 			}
 			break;
 		}
 		if (*cp == ';') {
 			tbl_option(tbl, ln, p, &pos);
 			if (p[pos] == '\0')
-				return ROFF_IGN;
+				return;
 		}
 	}
 
 	/* Process the other section types.  */
 
 	switch (tbl->part) {
 	case TBL_PART_LAYOUT:
 		tbl_layout(tbl, ln, p, pos);
-		return ROFF_IGN;
+		break;
 	case TBL_PART_CDATA:
-		return tbl_cdata(tbl, ln, p, pos) ? ROFF_TBL : ROFF_IGN;
+		tbl_cdata(tbl, ln, p, pos);
+		break;
 	default:
+		tbl_data(tbl, ln, p, pos);
 		break;
 	}
-
-	tbl_data(tbl, ln, p, pos);
-	return ROFF_TBL;
 }
 
 struct tbl_node *
 tbl_alloc(int pos, int line, struct mparse *parse)
 {
 	struct tbl_node	*tbl;
 
 	tbl = mandoc_calloc(1, sizeof(*tbl));
 	tbl->line = line;
 	tbl->pos = pos;
 	tbl->parse = parse;
 	tbl->part = TBL_PART_OPTS;
 	tbl->opts.tab = '\t';
 	tbl->opts.decimal = '.';
 	return tbl;
 }
 
 void
 tbl_free(struct tbl_node *tbl)
 {
 	struct tbl_row	*rp;
 	struct tbl_cell	*cp;
 	struct tbl_span	*sp;
 	struct tbl_dat	*dp;
 
 	while ((rp = tbl->first_row) != NULL) {
 		tbl->first_row = rp->next;
 		while (rp->first != NULL) {
 			cp = rp->first;
 			rp->first = cp->next;
 			free(cp->wstr);
 			free(cp);
 		}
 		free(rp);
 	}
 
 	while ((sp = tbl->first_span) != NULL) {
 		tbl->first_span = sp->next;
 		while (sp->first != NULL) {
 			dp = sp->first;
 			sp->first = dp->next;
 			free(dp->string);
 			free(dp);
 		}
 		free(sp);
 	}
 
 	free(tbl);
 }
 
 void
 tbl_restart(int line, int pos, struct tbl_node *tbl)
 {
 	if (tbl->part == TBL_PART_CDATA)
 		mandoc_msg(MANDOCERR_TBLDATA_BLK, tbl->parse,
 		    line, pos, "T&");
 
 	tbl->part = TBL_PART_LAYOUT;
 	tbl->line = line;
 	tbl->pos = pos;
 }
 
 const struct tbl_span *
 tbl_span(struct tbl_node *tbl)
 {
 	struct tbl_span	 *span;
 
 	assert(tbl);
 	span = tbl->current_span ? tbl->current_span->next
 				 : tbl->first_span;
 	if (span)
 		tbl->current_span = span;
 	return span;
 }
 
 int
-tbl_end(struct tbl_node **tblp)
+tbl_end(struct tbl_node *tbl)
 {
-	struct tbl_node	*tbl;
 	struct tbl_span *sp;
-
-	tbl = *tblp;
-	*tblp = NULL;
 
 	if (tbl->part == TBL_PART_CDATA)
 		mandoc_msg(MANDOCERR_TBLDATA_BLK, tbl->parse,
 		    tbl->line, tbl->pos, "TE");
 
 	sp = tbl->first_span;
 	while (sp != NULL && sp->first == NULL)
 		sp = sp->next;
 	if (sp == NULL) {
 		mandoc_msg(MANDOCERR_TBLDATA_NONE, tbl->parse,
 		    tbl->line, tbl->pos, NULL);
 		return 0;
 	}
 	return 1;
 }
Index: vendor/mdocml/dist/tbl_data.c
===================================================================
--- vendor/mdocml/dist/tbl_data.c	(revision 321806)
+++ vendor/mdocml/dist/tbl_data.c	(revision 321807)
@@ -1,242 +1,241 @@
-/*	$Id: tbl_data.c,v 1.42 2017/06/08 18:11:22 schwarze Exp $ */
+/*	$Id: tbl_data.c,v 1.45 2017/07/08 17:52:50 schwarze Exp $ */
 /*
  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons 
  * Copyright (c) 2011, 2015, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc.h"
 #include "mandoc_aux.h"
 #include "libmandoc.h"
 #include "libroff.h"
 
 static	void		 getdata(struct tbl_node *, struct tbl_span *,
 				int, const char *, int *);
 static	struct tbl_span	*newspan(struct tbl_node *, int,
 				struct tbl_row *);
 
 
 static void
 getdata(struct tbl_node *tbl, struct tbl_span *dp,
 		int ln, const char *p, int *pos)
 {
 	struct tbl_dat	*dat;
 	struct tbl_cell	*cp;
 	int		 sv;
 
 	/* Advance to the next layout cell, skipping spanners. */
 
 	cp = dp->last == NULL ? dp->layout->first : dp->last->layout->next;
 	while (cp != NULL && cp->pos == TBL_CELL_SPAN)
 		cp = cp->next;
 
 	/*
-	 * Stop processing when we reach the end of the available layout
-	 * cells.  This means that we have extra input.
+	 * If the current layout row is out of cells, allocate
+	 * a new cell if another row of the table has at least
+	 * this number of columns, or discard the input if we
+	 * are beyond the last column of the table as a whole.
 	 */
 
 	if (cp == NULL) {
-		mandoc_msg(MANDOCERR_TBLDATA_EXTRA, tbl->parse,
-		    ln, *pos, p + *pos);
-		/* Skip to the end... */
-		while (p[*pos])
-			(*pos)++;
-		return;
+		if (dp->layout->last->col + 1 < dp->opts->cols) {
+			cp = mandoc_calloc(1, sizeof(*cp));
+			cp->pos = TBL_CELL_LEFT;
+			dp->layout->last->next = cp;
+			cp->col = dp->layout->last->col + 1;
+			dp->layout->last = cp;
+		} else {
+			mandoc_msg(MANDOCERR_TBLDATA_EXTRA, tbl->parse,
+			    ln, *pos, p + *pos);
+			while (p[*pos])
+				(*pos)++;
+			return;
+		}
 	}
 
 	dat = mandoc_calloc(1, sizeof(*dat));
 	dat->layout = cp;
 	dat->pos = TBL_DATA_NONE;
 	dat->spans = 0;
 	for (cp = cp->next; cp != NULL; cp = cp->next)
 		if (cp->pos == TBL_CELL_SPAN)
 			dat->spans++;
 		else
 			break;
 
 	if (dp->last == NULL)
 		dp->first = dat;
 	else
 		dp->last->next = dat;
 	dp->last = dat;
 
 	sv = *pos;
 	while (p[*pos] && p[*pos] != tbl->opts.tab)
 		(*pos)++;
 
 	/*
 	 * Check for a continued-data scope opening.  This consists of a
 	 * trailing `T{' at the end of the line.  Subsequent lines,
 	 * until a standalone `T}', are included in our cell.
 	 */
 
 	if (*pos - sv == 2 && p[sv] == 'T' && p[sv + 1] == '{') {
 		tbl->part = TBL_PART_CDATA;
 		return;
 	}
 
 	dat->string = mandoc_strndup(p + sv, *pos - sv);
 
 	if (p[*pos])
 		(*pos)++;
 
 	if ( ! strcmp(dat->string, "_"))
 		dat->pos = TBL_DATA_HORIZ;
 	else if ( ! strcmp(dat->string, "="))
 		dat->pos = TBL_DATA_DHORIZ;
 	else if ( ! strcmp(dat->string, "\\_"))
 		dat->pos = TBL_DATA_NHORIZ;
 	else if ( ! strcmp(dat->string, "\\="))
 		dat->pos = TBL_DATA_NDHORIZ;
 	else
 		dat->pos = TBL_DATA_DATA;
 
 	if ((dat->layout->pos == TBL_CELL_HORIZ ||
 	    dat->layout->pos == TBL_CELL_DHORIZ ||
 	    dat->layout->pos == TBL_CELL_DOWN) &&
 	    dat->pos == TBL_DATA_DATA && *dat->string != '\0')
 		mandoc_msg(MANDOCERR_TBLDATA_SPAN,
 		    tbl->parse, ln, sv, dat->string);
 }
 
-int
+void
 tbl_cdata(struct tbl_node *tbl, int ln, const char *p, int pos)
 {
 	struct tbl_dat	*dat;
 	size_t		 sz;
 
 	dat = tbl->last_span->last;
 
 	if (p[pos] == 'T' && p[pos + 1] == '}') {
 		pos += 2;
 		if (p[pos] == tbl->opts.tab) {
 			tbl->part = TBL_PART_DATA;
 			pos++;
 			while (p[pos] != '\0')
 				getdata(tbl, tbl->last_span, ln, p, &pos);
-			return 1;
+			return;
 		} else if (p[pos] == '\0') {
 			tbl->part = TBL_PART_DATA;
-			return 1;
+			return;
 		}
 
 		/* Fallthrough: T} is part of a word. */
 	}
 
 	dat->pos = TBL_DATA_DATA;
 	dat->block = 1;
 
 	if (dat->string != NULL) {
 		sz = strlen(p + pos) + strlen(dat->string) + 2;
 		dat->string = mandoc_realloc(dat->string, sz);
 		(void)strlcat(dat->string, " ", sz);
 		(void)strlcat(dat->string, p + pos, sz);
 	} else
 		dat->string = mandoc_strdup(p + pos);
 
 	if (dat->layout->pos == TBL_CELL_DOWN)
 		mandoc_msg(MANDOCERR_TBLDATA_SPAN, tbl->parse,
 		    ln, pos, dat->string);
-
-	return 0;
 }
 
 static struct tbl_span *
 newspan(struct tbl_node *tbl, int line, struct tbl_row *rp)
 {
 	struct tbl_span	*dp;
 
 	dp = mandoc_calloc(1, sizeof(*dp));
 	dp->line = line;
 	dp->opts = &tbl->opts;
 	dp->layout = rp;
 	dp->prev = tbl->last_span;
 
 	if (dp->prev == NULL) {
 		tbl->first_span = dp;
 		tbl->current_span = NULL;
 	} else
 		dp->prev->next = dp;
 	tbl->last_span = dp;
 
 	return dp;
 }
 
 void
 tbl_data(struct tbl_node *tbl, int ln, const char *p, int pos)
 {
-	struct tbl_span	*dp;
 	struct tbl_row	*rp;
+	struct tbl_cell	*cp;
+	struct tbl_span	*sp;
 
-	/*
-	 * Choose a layout row: take the one following the last parsed
-	 * span's.  If that doesn't exist, use the last parsed span's.
-	 * If there's no last parsed span, use the first row.  Lastly,
-	 * if the last span was a horizontal line, use the same layout
-	 * (it doesn't "consume" the layout).
-	 */
+	rp = (sp = tbl->last_span) == NULL ? tbl->first_row :
+	    sp->pos == TBL_SPAN_DATA && sp->layout->next != NULL ?
+	    sp->layout->next : sp->layout;
 
-	if (tbl->last_span != NULL) {
-		if (tbl->last_span->pos == TBL_SPAN_DATA) {
-			for (rp = tbl->last_span->layout->next;
-			     rp != NULL && rp->first != NULL;
-			     rp = rp->next) {
-				switch (rp->first->pos) {
-				case TBL_CELL_HORIZ:
-					dp = newspan(tbl, ln, rp);
-					dp->pos = TBL_SPAN_HORIZ;
-					continue;
-				case TBL_CELL_DHORIZ:
-					dp = newspan(tbl, ln, rp);
-					dp->pos = TBL_SPAN_DHORIZ;
-					continue;
-				default:
-					break;
-				}
-				break;
-			}
-		} else
-			rp = tbl->last_span->layout;
+	assert(rp != NULL);
 
-		if (rp == NULL)
-			rp = tbl->last_span->layout;
-	} else
-		rp = tbl->first_row;
-
-	assert(rp);
-
-	dp = newspan(tbl, ln, rp);
-
 	if ( ! strcmp(p, "_")) {
-		dp->pos = TBL_SPAN_HORIZ;
+		sp = newspan(tbl, ln, rp);
+		sp->pos = TBL_SPAN_HORIZ;
 		return;
 	} else if ( ! strcmp(p, "=")) {
-		dp->pos = TBL_SPAN_DHORIZ;
+		sp = newspan(tbl, ln, rp);
+		sp->pos = TBL_SPAN_DHORIZ;
 		return;
 	}
 
-	dp->pos = TBL_SPAN_DATA;
+	/*
+	 * If the layout row contains nothing but horizontal lines,
+	 * allocate an empty span for it and assign the current span
+	 * to the next layout row accepting data.
+	 */
 
+	while (rp->next != NULL) {
+		if (rp->last->col + 1 < tbl->opts.cols)
+			break;
+		for (cp = rp->first; cp != NULL; cp = cp->next)
+			if (cp->pos != TBL_CELL_HORIZ &&
+			    cp->pos != TBL_CELL_DHORIZ)
+				break;
+		if (cp != NULL)
+			break;
+		sp = newspan(tbl, ln, rp);
+		sp->pos = TBL_SPAN_DATA;
+		rp = rp->next;
+	}
+
+	/* Process a real data row. */
+
+	sp = newspan(tbl, ln, rp);
+	sp->pos = TBL_SPAN_DATA;
 	while (p[pos] != '\0')
-		getdata(tbl, dp, ln, p, &pos);
+		getdata(tbl, sp, ln, p, &pos);
 }
Index: vendor/mdocml/dist/tbl_html.c
===================================================================
--- vendor/mdocml/dist/tbl_html.c	(revision 321806)
+++ vendor/mdocml/dist/tbl_html.c	(revision 321807)
@@ -1,158 +1,158 @@
-/*	$Id: tbl_html.c,v 1.21 2017/06/08 18:11:22 schwarze Exp $ */
+/*	$Id: tbl_html.c,v 1.22 2017/06/12 20:14:18 schwarze Exp $ */
 /*
  * Copyright (c) 2011 Kristaps Dzonsons 
  * Copyright (c) 2014, 2015, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc.h"
 #include "out.h"
 #include "html.h"
 
 static	void	 html_tblopen(struct html *, const struct tbl_span *);
 static	size_t	 html_tbl_len(size_t, void *);
 static	size_t	 html_tbl_strlen(const char *, void *);
 static	size_t	 html_tbl_sulen(const struct roffsu *, void *);
 
 
 static size_t
 html_tbl_len(size_t sz, void *arg)
 {
 	return sz;
 }
 
 static size_t
 html_tbl_strlen(const char *p, void *arg)
 {
 	return strlen(p);
 }
 
 static size_t
 html_tbl_sulen(const struct roffsu *su, void *arg)
 {
 	switch (su->unit) {
 	case SCALE_FS:  /* 2^16 basic units */
 		return su->scale * 65536.0 / 24.0;
 	case SCALE_IN:  /* 10 characters per inch */
 		return su->scale * 10.0;
 	case SCALE_CM:  /* 2.54 cm per inch */
 		return su->scale * 10.0 / 2.54;
 	case SCALE_PC:  /* 6 pica per inch */
 	case SCALE_VS:
 		return su->scale * 10.0 / 6.0;
 	case SCALE_EN:
 	case SCALE_EM:
 		return su->scale;
 	case SCALE_PT:  /* 12 points per pica */
 		return su->scale * 10.0 / 6.0 / 12.0;
 	case SCALE_BU:  /* 24 basic units per character */
 		return su->scale / 24.0;
 	case SCALE_MM:  /* 1/1000 inch */
 		return su->scale / 100.0;
 	default:
 		abort();
 	}
 }
 
 static void
 html_tblopen(struct html *h, const struct tbl_span *sp)
 {
 	struct tag	*t;
 	int		 ic;
 
 	if (h->tbl.cols == NULL) {
 		h->tbl.len = html_tbl_len;
 		h->tbl.slen = html_tbl_strlen;
 		h->tbl.sulen = html_tbl_sulen;
-		tblcalc(&h->tbl, sp, 0);
+		tblcalc(&h->tbl, sp, 0, 0);
 	}
 
 	assert(NULL == h->tblt);
 	h->tblt = print_otag(h, TAG_TABLE, "c", "tbl");
 
 	t = print_otag(h, TAG_COLGROUP, "");
 	for (ic = 0; ic < sp->opts->cols; ic++)
 		print_otag(h, TAG_COL, "shw", h->tbl.cols[ic].width);
 	print_tagq(h, t);
 }
 
 void
 print_tblclose(struct html *h)
 {
 
 	assert(h->tblt);
 	print_tagq(h, h->tblt);
 	h->tblt = NULL;
 }
 
 void
 print_tbl(struct html *h, const struct tbl_span *sp)
 {
 	const struct tbl_dat *dp;
 	struct tag	*tt;
 	int		 ic;
 
 	/* Inhibit printing of spaces: we do padding ourselves. */
 
 	if (h->tblt == NULL)
 		html_tblopen(h, sp);
 
 	assert(h->tblt);
 
 	h->flags |= HTML_NONOSPACE;
 	h->flags |= HTML_NOSPACE;
 
 	tt = print_otag(h, TAG_TR, "");
 
 	switch (sp->pos) {
 	case TBL_SPAN_HORIZ:
 	case TBL_SPAN_DHORIZ:
 		print_otag(h, TAG_TD, "?", "colspan", "0");
 		break;
 	default:
 		dp = sp->first;
 		for (ic = 0; ic < sp->opts->cols; ic++) {
 			print_stagq(h, tt);
 			print_otag(h, TAG_TD, "");
 
 			if (dp == NULL || dp->layout->col > ic)
 				continue;
 			if (dp->layout->pos != TBL_CELL_DOWN)
 				if (dp->string != NULL)
 					print_text(h, dp->string);
 			dp = dp->next;
 		}
 		break;
 	}
 
 	print_tagq(h, tt);
 
 	h->flags &= ~HTML_NONOSPACE;
 
 	if (sp->next == NULL) {
 		assert(h->tbl.cols);
 		free(h->tbl.cols);
 		h->tbl.cols = NULL;
 		print_tblclose(h);
 	}
 
 }
Index: vendor/mdocml/dist/tbl_layout.c
===================================================================
--- vendor/mdocml/dist/tbl_layout.c	(revision 321806)
+++ vendor/mdocml/dist/tbl_layout.c	(revision 321807)
@@ -1,371 +1,375 @@
-/*	$Id: tbl_layout.c,v 1.42 2017/06/08 18:11:22 schwarze Exp $ */
+/*	$Id: tbl_layout.c,v 1.44 2017/06/27 18:25:02 schwarze Exp $ */
 /*
  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons 
  * Copyright (c) 2012, 2014, 2015, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
+#include 
 #include 
 #include 
 #include 
 
 #include "mandoc.h"
 #include "mandoc_aux.h"
 #include "libmandoc.h"
 #include "libroff.h"
 
 struct	tbl_phrase {
 	char		 name;
 	enum tbl_cellt	 key;
 };
 
 static	const struct tbl_phrase keys[] = {
 	{ 'c',		 TBL_CELL_CENTRE },
 	{ 'r',		 TBL_CELL_RIGHT },
 	{ 'l',		 TBL_CELL_LEFT },
 	{ 'n',		 TBL_CELL_NUMBER },
 	{ 's',		 TBL_CELL_SPAN },
 	{ 'a',		 TBL_CELL_LONG },
 	{ '^',		 TBL_CELL_DOWN },
 	{ '-',		 TBL_CELL_HORIZ },
 	{ '_',		 TBL_CELL_HORIZ },
 	{ '=',		 TBL_CELL_DHORIZ }
 };
 
 #define KEYS_MAX ((int)(sizeof(keys)/sizeof(keys[0])))
 
 static	void		 mods(struct tbl_node *, struct tbl_cell *,
 				int, const char *, int *);
 static	void		 cell(struct tbl_node *, struct tbl_row *,
 				int, const char *, int *);
 static	struct tbl_cell *cell_alloc(struct tbl_node *, struct tbl_row *,
 				enum tbl_cellt);
 
 
 static void
 mods(struct tbl_node *tbl, struct tbl_cell *cp,
 		int ln, const char *p, int *pos)
 {
 	char		*endptr;
 	size_t		 sz;
 
 mod:
 	while (p[*pos] == ' ' || p[*pos] == '\t')
 		(*pos)++;
 
 	/* Row delimiters and cell specifiers end modifier lists. */
 
 	if (strchr(".,-=^_ACLNRSaclnrs", p[*pos]) != NULL)
 		return;
 
 	/* Throw away parenthesised expression. */
 
 	if ('(' == p[*pos]) {
 		(*pos)++;
 		while (p[*pos] && ')' != p[*pos])
 			(*pos)++;
 		if (')' == p[*pos]) {
 			(*pos)++;
 			goto mod;
 		}
 		mandoc_msg(MANDOCERR_TBLLAYOUT_PAR, tbl->parse,
 		    ln, *pos, NULL);
 		return;
 	}
 
 	/* Parse numerical spacing from modifier string. */
 
 	if (isdigit((unsigned char)p[*pos])) {
 		cp->spacing = strtoull(p + *pos, &endptr, 10);
 		*pos = endptr - p;
 		goto mod;
 	}
 
 	switch (tolower((unsigned char)p[(*pos)++])) {
 	case 'b':
 		cp->flags |= TBL_CELL_BOLD;
 		goto mod;
 	case 'd':
 		cp->flags |= TBL_CELL_BALIGN;
 		goto mod;
 	case 'e':
 		cp->flags |= TBL_CELL_EQUAL;
 		goto mod;
 	case 'f':
 		break;
 	case 'i':
 		cp->flags |= TBL_CELL_ITALIC;
 		goto mod;
 	case 'm':
 		mandoc_msg(MANDOCERR_TBLLAYOUT_MOD, tbl->parse,
 		    ln, *pos, "m");
 		goto mod;
 	case 'p':
 	case 'v':
 		if (p[*pos] == '-' || p[*pos] == '+')
 			(*pos)++;
 		while (isdigit((unsigned char)p[*pos]))
 			(*pos)++;
 		goto mod;
 	case 't':
 		cp->flags |= TBL_CELL_TALIGN;
 		goto mod;
 	case 'u':
 		cp->flags |= TBL_CELL_UP;
 		goto mod;
 	case 'w':
 		sz = 0;
 		if (p[*pos] == '(') {
 			(*pos)++;
 			while (p[*pos + sz] != '\0' && p[*pos + sz] != ')')
 				sz++;
 		} else
 			while (isdigit((unsigned char)p[*pos + sz]))
 				sz++;
 		if (sz) {
 			free(cp->wstr);
 			cp->wstr = mandoc_strndup(p + *pos, sz);
 			*pos += sz;
 			if (p[*pos] == ')')
 				(*pos)++;
 		}
 		goto mod;
 	case 'x':
 		cp->flags |= TBL_CELL_WMAX;
 		goto mod;
 	case 'z':
 		cp->flags |= TBL_CELL_WIGN;
 		goto mod;
 	case '|':
 		if (cp->vert < 2)
 			cp->vert++;
 		else
 			mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
 			    tbl->parse, ln, *pos - 1, NULL);
 		goto mod;
 	default:
 		mandoc_vmsg(MANDOCERR_TBLLAYOUT_CHAR, tbl->parse,
 		    ln, *pos - 1, "%c", p[*pos - 1]);
 		goto mod;
 	}
 
 	/* Ignore parenthised font names for now. */
 
 	if (p[*pos] == '(')
 		goto mod;
 
 	/* Support only one-character font-names for now. */
 
 	if (p[*pos] == '\0' || (p[*pos + 1] != ' ' && p[*pos + 1] != '.')) {
 		mandoc_vmsg(MANDOCERR_FT_BAD, tbl->parse,
 		    ln, *pos, "TS %s", p + *pos - 1);
 		if (p[*pos] != '\0')
 			(*pos)++;
 		if (p[*pos] != '\0')
 			(*pos)++;
 		goto mod;
 	}
 
 	switch (p[(*pos)++]) {
 	case '3':
 	case 'B':
 		cp->flags |= TBL_CELL_BOLD;
 		goto mod;
 	case '2':
 	case 'I':
 		cp->flags |= TBL_CELL_ITALIC;
 		goto mod;
 	case '1':
 	case 'R':
 		goto mod;
 	default:
 		mandoc_vmsg(MANDOCERR_FT_BAD, tbl->parse,
 		    ln, *pos - 1, "TS f%c", p[*pos - 1]);
 		goto mod;
 	}
 }
 
 static void
 cell(struct tbl_node *tbl, struct tbl_row *rp,
 		int ln, const char *p, int *pos)
 {
 	int		 i;
 	enum tbl_cellt	 c;
 
 	/* Handle leading vertical lines */
 
 	while (p[*pos] == ' ' || p[*pos] == '\t' || p[*pos] == '|') {
 		if (p[*pos] == '|') {
 			if (rp->vert < 2)
 				rp->vert++;
 			else
 				mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
 				    tbl->parse, ln, *pos, NULL);
 		}
 		(*pos)++;
 	}
 
 again:
 	while (p[*pos] == ' ' || p[*pos] == '\t')
 		(*pos)++;
 
 	if (p[*pos] == '.' || p[*pos] == '\0')
 		return;
 
 	/* Parse the column position (`c', `l', `r', ...). */
 
 	for (i = 0; i < KEYS_MAX; i++)
 		if (tolower((unsigned char)p[*pos]) == keys[i].name)
 			break;
 
 	if (i == KEYS_MAX) {
 		mandoc_vmsg(MANDOCERR_TBLLAYOUT_CHAR, tbl->parse,
 		    ln, *pos, "%c", p[*pos]);
 		(*pos)++;
 		goto again;
 	}
 	c = keys[i].key;
 
 	/* Special cases of spanners. */
 
 	if (c == TBL_CELL_SPAN) {
 		if (rp->last == NULL)
 			mandoc_msg(MANDOCERR_TBLLAYOUT_SPAN,
 			    tbl->parse, ln, *pos, NULL);
 		else if (rp->last->pos == TBL_CELL_HORIZ ||
 		    rp->last->pos == TBL_CELL_DHORIZ)
 			c = rp->last->pos;
 	} else if (c == TBL_CELL_DOWN && rp == tbl->first_row)
 		mandoc_msg(MANDOCERR_TBLLAYOUT_DOWN,
 		    tbl->parse, ln, *pos, NULL);
 
 	(*pos)++;
 
 	/* Allocate cell then parse its modifiers. */
 
 	mods(tbl, cell_alloc(tbl, rp, c), ln, p, pos);
 }
 
 void
 tbl_layout(struct tbl_node *tbl, int ln, const char *p, int pos)
 {
 	struct tbl_row	*rp;
 
 	rp = NULL;
 	for (;;) {
 		/* Skip whitespace before and after each cell. */
 
 		while (p[pos] == ' ' || p[pos] == '\t')
 			pos++;
 
 		switch (p[pos]) {
 		case ',':  /* Next row on this input line. */
 			pos++;
 			rp = NULL;
 			continue;
 		case '\0':  /* Next row on next input line. */
 			return;
 		case '.':  /* End of layout. */
 			pos++;
 			tbl->part = TBL_PART_DATA;
 
 			/*
 			 * When the layout is completely empty,
 			 * default to one left-justified column.
 			 */
 
 			if (tbl->first_row == NULL) {
 				tbl->first_row = tbl->last_row =
 				    mandoc_calloc(1, sizeof(*rp));
 			}
 			if (tbl->first_row->first == NULL) {
 				mandoc_msg(MANDOCERR_TBLLAYOUT_NONE,
 				    tbl->parse, ln, pos, NULL);
 				cell_alloc(tbl, tbl->first_row,
 				    TBL_CELL_LEFT);
+				if (tbl->opts.lvert < tbl->first_row->vert)
+					tbl->opts.lvert = tbl->first_row->vert;
 				return;
 			}
 
 			/*
 			 * Search for the widest line
 			 * along the left and right margins.
 			 */
 
 			for (rp = tbl->first_row; rp; rp = rp->next) {
 				if (tbl->opts.lvert < rp->vert)
 					tbl->opts.lvert = rp->vert;
 				if (rp->last != NULL &&
 				    rp->last->col + 1 == tbl->opts.cols &&
 				    tbl->opts.rvert < rp->last->vert)
 					tbl->opts.rvert = rp->last->vert;
 
 				/* If the last line is empty, drop it. */
 
 				if (rp->next != NULL &&
 				    rp->next->first == NULL) {
 					free(rp->next);
 					rp->next = NULL;
 					tbl->last_row = rp;
 				}
 			}
 			return;
 		default:  /* Cell. */
 			break;
 		}
 
 		/*
 		 * If the last line had at least one cell,
 		 * start a new one; otherwise, continue it.
 		 */
 
 		if (rp == NULL) {
 			if (tbl->last_row == NULL ||
 			    tbl->last_row->first != NULL) {
 				rp = mandoc_calloc(1, sizeof(*rp));
 				if (tbl->last_row)
 					tbl->last_row->next = rp;
 				else
 					tbl->first_row = rp;
 				tbl->last_row = rp;
 			} else
 				rp = tbl->last_row;
 		}
 		cell(tbl, rp, ln, p, &pos);
 	}
 }
 
 static struct tbl_cell *
 cell_alloc(struct tbl_node *tbl, struct tbl_row *rp, enum tbl_cellt pos)
 {
 	struct tbl_cell	*p, *pp;
 
 	p = mandoc_calloc(1, sizeof(*p));
+	p->spacing = SIZE_MAX;
 	p->pos = pos;
 
 	if ((pp = rp->last) != NULL) {
 		pp->next = p;
 		p->col = pp->col + 1;
 	} else
 		rp->first = p;
 	rp->last = p;
 
 	if (tbl->opts.cols <= p->col)
 		tbl->opts.cols = p->col + 1;
 
 	return p;
 }
Index: vendor/mdocml/dist/tbl_term.c
===================================================================
--- vendor/mdocml/dist/tbl_term.c	(revision 321806)
+++ vendor/mdocml/dist/tbl_term.c	(revision 321807)
@@ -1,417 +1,673 @@
-/*	$Id: tbl_term.c,v 1.46 2017/06/08 18:11:22 schwarze Exp $ */
+/*	$Id: tbl_term.c,v 1.56 2017/07/08 13:43:15 schwarze Exp $ */
 /*
  * Copyright (c) 2009, 2011 Kristaps Dzonsons 
  * Copyright (c) 2011,2012,2014,2015,2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc.h"
 #include "out.h"
 #include "term.h"
 
+#define	IS_HORIZ(cp)	((cp)->pos == TBL_CELL_HORIZ || \
+			 (cp)->pos == TBL_CELL_DHORIZ)
+
 static	size_t	term_tbl_len(size_t, void *);
 static	size_t	term_tbl_strlen(const char *, void *);
 static	size_t	term_tbl_sulen(const struct roffsu *, void *);
 static	void	tbl_char(struct termp *, char, size_t);
 static	void	tbl_data(struct termp *, const struct tbl_opts *,
+			const struct tbl_cell *,
 			const struct tbl_dat *,
 			const struct roffcol *);
 static	void	tbl_literal(struct termp *, const struct tbl_dat *,
 			const struct roffcol *);
 static	void	tbl_number(struct termp *, const struct tbl_opts *,
 			const struct tbl_dat *,
 			const struct roffcol *);
 static	void	tbl_hrule(struct termp *, const struct tbl_span *, int);
 static	void	tbl_word(struct termp *, const struct tbl_dat *);
 
 
 static size_t
 term_tbl_sulen(const struct roffsu *su, void *arg)
 {
-	return term_hspan((const struct termp *)arg, su) / 24;
+	return term_hen((const struct termp *)arg, su);
 }
 
 static size_t
 term_tbl_strlen(const char *p, void *arg)
 {
 	return term_strlen((const struct termp *)arg, p);
 }
 
 static size_t
 term_tbl_len(size_t sz, void *arg)
 {
 	return term_len((const struct termp *)arg, sz);
 }
 
 void
 term_tbl(struct termp *tp, const struct tbl_span *sp)
 {
-	const struct tbl_cell	*cp;
+	const struct tbl_cell	*cp, *cpn, *cpp;
 	const struct tbl_dat	*dp;
 	static size_t		 offset;
-	size_t			 tsz;
-	int			 ic, horiz, spans, vert;
+	size_t			 coloff, tsz;
+	int			 ic, horiz, spans, vert, more;
+	char			 fc;
 
 	/* Inhibit printing of spaces: we do padding ourselves. */
 
-	tp->flags |= TERMP_NOSPACE | TERMP_NONOSPACE | TERMP_BRNEVER;
+	tp->flags |= TERMP_NOSPACE | TERMP_NONOSPACE;
 
 	/*
 	 * The first time we're invoked for a given table block,
 	 * calculate the table widths and decimal positions.
 	 */
 
 	if (tp->tbl.cols == NULL) {
 		tp->tbl.len = term_tbl_len;
 		tp->tbl.slen = term_tbl_strlen;
 		tp->tbl.sulen = term_tbl_sulen;
 		tp->tbl.arg = tp;
 
-		tblcalc(&tp->tbl, sp, tp->tcol->rmargin - tp->tcol->offset);
+		tblcalc(&tp->tbl, sp, tp->tcol->offset, tp->tcol->rmargin);
 
+		/* Tables leak .ta settings to subsequent text. */
+
+		term_tab_set(tp, NULL);
+		coloff = sp->opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) ||
+		    sp->opts->lvert;
+		for (ic = 0; ic < sp->opts->cols; ic++) {
+			coloff += tp->tbl.cols[ic].width;
+			term_tab_iset(coloff);
+			coloff += tp->tbl.cols[ic].spacing;
+		}
+
 		/* Center the table as a whole. */
 
 		offset = tp->tcol->offset;
 		if (sp->opts->opts & TBL_OPT_CENTRE) {
 			tsz = sp->opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX)
 			    ? 2 : !!sp->opts->lvert + !!sp->opts->rvert;
-			for (ic = 0; ic < sp->opts->cols; ic++)
-				tsz += tp->tbl.cols[ic].width + 3;
-			tsz -= 3;
+			for (ic = 0; ic + 1 < sp->opts->cols; ic++)
+				tsz += tp->tbl.cols[ic].width +
+				    tp->tbl.cols[ic].spacing;
+			if (sp->opts->cols)
+				tsz += tp->tbl.cols[sp->opts->cols - 1].width;
 			if (offset + tsz > tp->tcol->rmargin)
 				tsz -= 1;
 			tp->tcol->offset = offset + tp->tcol->rmargin > tsz ?
 			    (offset + tp->tcol->rmargin - tsz) / 2 : 0;
 		}
 
 		/* Horizontal frame at the start of boxed tables. */
 
 		if (sp->opts->opts & TBL_OPT_DBOX)
-			tbl_hrule(tp, sp, 2);
+			tbl_hrule(tp, sp, 3);
 		if (sp->opts->opts & (TBL_OPT_DBOX | TBL_OPT_BOX))
-			tbl_hrule(tp, sp, 1);
+			tbl_hrule(tp, sp, 2);
 	}
 
-	/* Vertical frame at the start of each row. */
+	/* Set up the columns. */
 
-	horiz = sp->pos == TBL_SPAN_HORIZ || sp->pos == TBL_SPAN_DHORIZ;
+	tp->flags |= TERMP_MULTICOL;
+	horiz = 0;
+	switch (sp->pos) {
+	case TBL_SPAN_HORIZ:
+	case TBL_SPAN_DHORIZ:
+		horiz = 1;
+		term_setcol(tp, 1);
+		break;
+	case TBL_SPAN_DATA:
+		term_setcol(tp, sp->opts->cols + 2);
+		coloff = tp->tcol->offset;
 
-	if (sp->layout->vert ||
-	    (sp->prev != NULL && sp->prev->layout->vert) ||
-	    sp->opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX))
-		term_word(tp, horiz ? "+" : "|");
-	else if (sp->opts->lvert)
-		tbl_char(tp, horiz ? '-' : ASCII_NBRSP, 1);
+		/* Set up a column for a left vertical frame. */
 
-	/*
-	 * Now print the actual data itself depending on the span type.
-	 * Match data cells to column numbers.
-	 */
+		if (sp->opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) ||
+		    sp->opts->lvert)
+			coloff++;
+		tp->tcol->rmargin = coloff;
 
-	if (sp->pos == TBL_SPAN_DATA) {
-		cp = sp->layout->first;
+		/* Set up the data columns. */
+
 		dp = sp->first;
 		spans = 0;
 		for (ic = 0; ic < sp->opts->cols; ic++) {
+			if (spans == 0) {
+				tp->tcol++;
+				tp->tcol->offset = coloff;
+			}
+			coloff += tp->tbl.cols[ic].width;
+			tp->tcol->rmargin = coloff;
+			if (ic + 1 < sp->opts->cols)
+				coloff += tp->tbl.cols[ic].spacing;
+			if (spans) {
+				spans--;
+				continue;
+			}
+			if (dp == NULL)
+				continue;
+			spans = dp->spans;
+			if (ic || sp->layout->first->pos != TBL_CELL_SPAN)
+				dp = dp->next;
+		}
 
-			/*
-			 * Remeber whether we need a vertical bar
-			 * after this cell.
-			 */
+		/* Set up a column for a right vertical frame. */
 
-			vert = cp == NULL ? 0 : cp->vert;
+		tp->tcol++;
+		tp->tcol->offset = coloff + 1;
+		tp->tcol->rmargin = tp->maxrmargin;
 
-			/*
-			 * Print the data and advance to the next cell.
-			 */
+		/* Spans may have reduced the number of columns. */
 
-			if (spans == 0) {
-				tbl_data(tp, sp->opts, dp, tp->tbl.cols + ic);
+		tp->lasttcol = tp->tcol - tp->tcols;
+
+		/* Fill the buffers for all data columns. */
+
+		tp->tcol = tp->tcols;
+		cp = cpn = sp->layout->first;
+		dp = sp->first;
+		spans = 0;
+		for (ic = 0; ic < sp->opts->cols; ic++) {
+			if (cpn != NULL) {
+				cp = cpn;
+				cpn = cpn->next;
+			}
+			if (spans) {
+				spans--;
+				continue;
+			}
+			tp->tcol++;
+			tp->col = 0;
+			tbl_data(tp, sp->opts, cp, dp, tp->tbl.cols + ic);
+			if (dp == NULL)
+				continue;
+			spans = dp->spans;
+			if (cp->pos != TBL_CELL_SPAN)
+				dp = dp->next;
+		}
+		break;
+	}
+
+	do {
+		/* Print the vertical frame at the start of each row. */
+
+		tp->tcol = tp->tcols;
+		fc = '\0';
+		if (sp->layout->vert ||
+		    (sp->next != NULL && sp->next->layout->vert &&
+		     sp->next->pos == TBL_SPAN_DATA) ||
+		    (sp->prev != NULL && sp->prev->layout->vert &&
+		     (horiz || (IS_HORIZ(sp->layout->first) &&
+		       !IS_HORIZ(sp->prev->layout->first)))) ||
+		    sp->opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX))
+			fc = horiz || IS_HORIZ(sp->layout->first) ? '+' : '|';
+		else if (horiz && sp->opts->lvert)
+			fc = '-';
+		if (fc != '\0') {
+			(*tp->advance)(tp, tp->tcols->offset);
+			(*tp->letter)(tp, fc);
+			tp->viscol = tp->tcol->offset + 1;
+		}
+
+		/* Print the data cells. */
+
+		more = 0;
+		if (horiz) {
+			tbl_hrule(tp, sp, 0);
+			term_flushln(tp);
+		} else {
+			cp = sp->layout->first;
+			cpn = sp->next == NULL ? NULL :
+			    sp->next->layout->first;
+			cpp = sp->prev == NULL ? NULL :
+			    sp->prev->layout->first;
+			dp = sp->first;
+			spans = 0;
+			for (ic = 0; ic < sp->opts->cols; ic++) {
+
+				/*
+				 * Figure out whether to print a
+				 * vertical line after this cell
+				 * and advance to next layout cell.
+				 */
+
+				if (cp != NULL) {
+					vert = cp->vert;
+					switch (cp->pos) {
+					case TBL_CELL_HORIZ:
+						fc = '-';
+						break;
+					case TBL_CELL_DHORIZ:
+						fc = '=';
+						break;
+					default:
+						fc = ' ';
+						break;
+					}
+				} else {
+					vert = 0;
+					fc = ' ';
+				}
+				if (cpp != NULL) {
+					if (vert == 0 &&
+					    cp != NULL &&
+					    ((IS_HORIZ(cp) &&
+					      !IS_HORIZ(cpp)) ||
+					     (cp->next != NULL &&
+					      cpp->next != NULL &&
+					      IS_HORIZ(cp->next) &&
+					      !IS_HORIZ(cpp->next))))
+						vert = cpp->vert;
+					cpp = cpp->next;
+				}
+				if (vert == 0 &&
+				    sp->opts->opts & TBL_OPT_ALLBOX)
+					vert = 1;
+				if (cpn != NULL) {
+					if (vert == 0)
+						vert = cpn->vert;
+					cpn = cpn->next;
+				}
+				if (cp != NULL)
+					cp = cp->next;
+
+				/*
+				 * Skip later cells in a span,
+				 * figure out whether to start a span,
+				 * and advance to next data cell.
+				 */
+
+				if (spans) {
+					spans--;
+					continue;
+				}
 				if (dp != NULL) {
 					spans = dp->spans;
-					dp = dp->next;
+					if (ic || sp->layout->first->pos
+					    != TBL_CELL_SPAN)
+						dp = dp->next;
 				}
-			} else
-				spans--;
-			if (cp != NULL)
-				cp = cp->next;
 
-			/*
-			 * Separate columns, except in the middle
-			 * of spans and after the last cell.
-			 */
+				/*
+				 * Print one line of text in the cell
+				 * and remember whether there is more.
+				 */
 
-			if (ic + 1 == sp->opts->cols || spans)
-				continue;
+				tp->tcol++;
+				if (tp->tcol->col < tp->tcol->lastcol)
+					term_flushln(tp);
+				if (tp->tcol->col < tp->tcol->lastcol)
+					more = 1;
 
-			tbl_char(tp, ASCII_NBRSP, 1);
-			if (vert > 0)
-				tbl_char(tp, '|', vert);
-			if (vert < 2)
-				tbl_char(tp, ASCII_NBRSP, 2 - vert);
+				/*
+				 * Vertical frames between data cells,
+				 * but not after the last column.
+				 */
+
+				if (fc == ' ' && ((vert == 0 &&
+				     (cp == NULL || !IS_HORIZ(cp))) ||
+				    tp->tcol + 1 == tp->tcols + tp->lasttcol))
+					continue;
+
+				if (tp->viscol < tp->tcol->rmargin) {
+					(*tp->advance)(tp, tp->tcol->rmargin
+					   - tp->viscol);
+					tp->viscol = tp->tcol->rmargin;
+				}
+				while (tp->viscol < tp->tcol->rmargin +
+				    tp->tbl.cols[ic].spacing / 2) {
+					(*tp->letter)(tp, fc);
+					tp->viscol++;
+				}
+
+				if (tp->tcol + 1 == tp->tcols + tp->lasttcol)
+					continue;
+
+				if (fc == ' ' && cp != NULL) {
+					switch (cp->pos) {
+					case TBL_CELL_HORIZ:
+						fc = '-';
+						break;
+					case TBL_CELL_DHORIZ:
+						fc = '=';
+						break;
+					default:
+						break;
+					}
+				}
+				if (tp->tbl.cols[ic].spacing) {
+					(*tp->letter)(tp, fc == ' ' ? '|' :
+					    vert ? '+' : fc);
+					tp->viscol++;
+				}
+
+				if (fc != ' ') {
+					if (cp != NULL &&
+					    cp->pos == TBL_CELL_HORIZ)
+						fc = '-';
+					else if (cp != NULL &&
+					    cp->pos == TBL_CELL_DHORIZ)
+						fc = '=';
+					else
+						fc = ' ';
+				}
+				if (tp->tbl.cols[ic].spacing > 2 &&
+				    (vert > 1 || fc != ' ')) {
+					(*tp->letter)(tp, fc == ' ' ? '|' :
+					    vert > 1 ? '+' : fc);
+					tp->viscol++;
+				}
+			}
 		}
-	} else if (horiz)
-		tbl_hrule(tp, sp, 0);
 
-	/* Vertical frame at the end of each row. */
+		/* Print the vertical frame at the end of each row. */
 
-	if (sp->layout->last->vert ||
-	    (sp->prev != NULL && sp->prev->layout->last->vert) ||
-	    (sp->opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX)))
-		term_word(tp, horiz ? "+" : " |");
-	else if (sp->opts->rvert)
-		tbl_char(tp, horiz ? '-' : ASCII_NBRSP, 1);
-	term_flushln(tp);
+		fc = '\0';
+		if ((sp->layout->last->vert &&
+		     sp->layout->last->col + 1 == sp->opts->cols) ||
+		    (sp->next != NULL &&
+		     sp->next->layout->last->vert &&
+		     sp->next->layout->last->col + 1 == sp->opts->cols) ||
+		    (sp->prev != NULL &&
+		     sp->prev->layout->last->vert &&
+		     sp->prev->layout->last->col + 1 == sp->opts->cols &&
+		     (horiz || (IS_HORIZ(sp->layout->last) &&
+		      !IS_HORIZ(sp->prev->layout->last)))) ||
+		    (sp->opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX)))
+			fc = horiz || IS_HORIZ(sp->layout->last) ? '+' : '|';
+		else if (horiz && sp->opts->rvert)
+			fc = '-';
+		if (fc != '\0') {
+			if (horiz == 0 && (IS_HORIZ(sp->layout->last) == 0 ||
+			    sp->layout->last->col + 1 < sp->opts->cols)) {
+				tp->tcol++;
+				(*tp->advance)(tp,
+				    tp->tcol->offset > tp->viscol ?
+				    tp->tcol->offset - tp->viscol : 1);
+			}
+			(*tp->letter)(tp, fc);
+		}
+		(*tp->endline)(tp);
+		tp->viscol = 0;
+	} while (more);
 
 	/*
-	 * If we're the last row, clean up after ourselves: clear the
-	 * existing table configuration and set it to NULL.
+	 * Clean up after this row.  If it is the last line
+	 * of the table, print the box line and clean up
+	 * column data; otherwise, print the allbox line.
 	 */
 
+	term_setcol(tp, 1);
+	tp->flags &= ~TERMP_MULTICOL;
+	tp->tcol->rmargin = tp->maxrmargin;
 	if (sp->next == NULL) {
 		if (sp->opts->opts & (TBL_OPT_DBOX | TBL_OPT_BOX)) {
-			tbl_hrule(tp, sp, 1);
+			tbl_hrule(tp, sp, 2);
 			tp->skipvsp = 1;
 		}
 		if (sp->opts->opts & TBL_OPT_DBOX) {
-			tbl_hrule(tp, sp, 2);
+			tbl_hrule(tp, sp, 3);
 			tp->skipvsp = 2;
 		}
 		assert(tp->tbl.cols);
 		free(tp->tbl.cols);
 		tp->tbl.cols = NULL;
 		tp->tcol->offset = offset;
-	}
-	tp->flags &= ~(TERMP_NONOSPACE | TERMP_BRNEVER);
+	} else if (horiz == 0 && sp->opts->opts & TBL_OPT_ALLBOX &&
+	    (sp->next == NULL || sp->next->pos == TBL_SPAN_DATA ||
+	     sp->next->next != NULL))
+		tbl_hrule(tp, sp, 1);
+
+	tp->flags &= ~TERMP_NONOSPACE;
 }
 
 /*
  * Kinds of horizontal rulers:
  * 0: inside the table (single or double line with crossings)
- * 1: inner frame (single line with crossings and ends)
- * 2: outer frame (single line without crossings with ends)
+ * 1: inside the table (single or double line with crossings and ends)
+ * 2: inner frame (single line with crossings and ends)
+ * 3: outer frame (single line without crossings with ends)
  */
 static void
 tbl_hrule(struct termp *tp, const struct tbl_span *sp, int kind)
 {
-	const struct tbl_cell *c1, *c2;
+	const struct tbl_cell *cp, *cpn, *cpp;
+	const struct roffcol *col;
 	int	 vert;
 	char	 line, cross;
 
-	line = (kind == 0 && TBL_SPAN_DHORIZ == sp->pos) ? '=' : '-';
-	cross = (kind < 2) ? '+' : '-';
+	line = (kind < 2 && TBL_SPAN_DHORIZ == sp->pos) ? '=' : '-';
+	cross = (kind < 3) ? '+' : '-';
 
 	if (kind)
 		term_word(tp, "+");
-	c1 = sp->layout->first;
-	c2 = sp->prev == NULL ? NULL : sp->prev->layout->first;
-	if (c2 == c1)
-		c2 = NULL;
+	cp = sp->layout->first;
+	cpp = kind || sp->prev == NULL ? NULL : sp->prev->layout->first;
+	if (cpp == cp)
+		cpp = NULL;
+	cpn = kind > 1 || sp->next == NULL ? NULL : sp->next->layout->first;
+	if (cpn == cp)
+		cpn = NULL;
 	for (;;) {
-		tbl_char(tp, line, tp->tbl.cols[c1->col].width + 1);
-		vert = c1->vert;
-		if ((c1 = c1->next) == NULL)
+		col = tp->tbl.cols + cp->col;
+		tbl_char(tp, line, col->width + col->spacing / 2);
+		vert = cp->vert;
+		if ((cp = cp->next) == NULL)
 			 break;
-		if (c2 != NULL) {
-			if (vert < c2->vert)
-				vert = c2->vert;
-			c2 = c2->next;
+		if (cpp != NULL) {
+			if (vert < cpp->vert)
+				vert = cpp->vert;
+			cpp = cpp->next;
 		}
-		if (vert)
-			tbl_char(tp, cross, vert);
-		if (vert < 2)
-			tbl_char(tp, line, 2 - vert);
+		if (cpn != NULL) {
+			if (vert < cpn->vert)
+				vert = cpn->vert;
+			cpn = cpn->next;
+		}
+		if (sp->opts->opts & TBL_OPT_ALLBOX && !vert)
+			vert = 1;
+		if (col->spacing)
+			tbl_char(tp, vert ? cross : line, 1);
+		if (col->spacing > 2)
+			tbl_char(tp, vert > 1 ? cross : line, 1);
+		if (col->spacing > 4)
+			tbl_char(tp, line, (col->spacing - 3) / 2);
 	}
 	if (kind) {
 		term_word(tp, "+");
 		term_flushln(tp);
 	}
 }
 
 static void
 tbl_data(struct termp *tp, const struct tbl_opts *opts,
-	const struct tbl_dat *dp,
-	const struct roffcol *col)
+    const struct tbl_cell *cp, const struct tbl_dat *dp,
+    const struct roffcol *col)
 {
-
-	if (dp == NULL) {
-		tbl_char(tp, ASCII_NBRSP, col->width);
+	switch (cp->pos) {
+	case TBL_CELL_HORIZ:
+		tbl_char(tp, '-', col->width);
 		return;
+	case TBL_CELL_DHORIZ:
+		tbl_char(tp, '=', col->width);
+		return;
+	default:
+		break;
 	}
 
+	if (dp == NULL)
+		return;
+
 	switch (dp->pos) {
 	case TBL_DATA_NONE:
-		tbl_char(tp, ASCII_NBRSP, col->width);
 		return;
 	case TBL_DATA_HORIZ:
 	case TBL_DATA_NHORIZ:
 		tbl_char(tp, '-', col->width);
 		return;
 	case TBL_DATA_NDHORIZ:
 	case TBL_DATA_DHORIZ:
 		tbl_char(tp, '=', col->width);
 		return;
 	default:
 		break;
 	}
 
-	switch (dp->layout->pos) {
-	case TBL_CELL_HORIZ:
-		tbl_char(tp, '-', col->width);
-		break;
-	case TBL_CELL_DHORIZ:
-		tbl_char(tp, '=', col->width);
-		break;
+	switch (cp->pos) {
 	case TBL_CELL_LONG:
 	case TBL_CELL_CENTRE:
 	case TBL_CELL_LEFT:
 	case TBL_CELL_RIGHT:
 		tbl_literal(tp, dp, col);
 		break;
 	case TBL_CELL_NUMBER:
 		tbl_number(tp, opts, dp, col);
 		break;
 	case TBL_CELL_DOWN:
-		tbl_char(tp, ASCII_NBRSP, col->width);
+	case TBL_CELL_SPAN:
 		break;
 	default:
 		abort();
 	}
 }
 
 static void
 tbl_char(struct termp *tp, char c, size_t len)
 {
 	size_t		i, sz;
 	char		cp[2];
 
 	cp[0] = c;
 	cp[1] = '\0';
 
 	sz = term_strlen(tp, cp);
 
 	for (i = 0; i < len; i += sz)
 		term_word(tp, cp);
 }
 
 static void
 tbl_literal(struct termp *tp, const struct tbl_dat *dp,
 		const struct roffcol *col)
 {
 	size_t		 len, padl, padr, width;
 	int		 ic, spans;
 
 	assert(dp->string);
 	len = term_strlen(tp, dp->string);
 	width = col->width;
 	ic = dp->layout->col;
 	spans = dp->spans;
 	while (spans--)
 		width += tp->tbl.cols[++ic].width + 3;
 
 	padr = width > len ? width - len : 0;
 	padl = 0;
 
 	switch (dp->layout->pos) {
 	case TBL_CELL_LONG:
 		padl = term_len(tp, 1);
 		padr = padr > padl ? padr - padl : 0;
 		break;
 	case TBL_CELL_CENTRE:
 		if (2 > padr)
 			break;
 		padl = padr / 2;
 		padr -= padl;
 		break;
 	case TBL_CELL_RIGHT:
 		padl = padr;
 		padr = 0;
 		break;
 	default:
 		break;
 	}
 
 	tbl_char(tp, ASCII_NBRSP, padl);
 	tbl_word(tp, dp);
 	tbl_char(tp, ASCII_NBRSP, padr);
 }
 
 static void
 tbl_number(struct termp *tp, const struct tbl_opts *opts,
 		const struct tbl_dat *dp,
 		const struct roffcol *col)
 {
 	char		*cp;
 	char		 buf[2];
 	size_t		 sz, psz, ssz, d, padl;
 	int		 i;
 
 	/*
 	 * See calc_data_number().  Left-pad by taking the offset of our
 	 * and the maximum decimal; right-pad by the remaining amount.
 	 */
 
 	assert(dp->string);
 
 	sz = term_strlen(tp, dp->string);
 
 	buf[0] = opts->decimal;
 	buf[1] = '\0';
 
 	psz = term_strlen(tp, buf);
 
 	if ((cp = strrchr(dp->string, opts->decimal)) != NULL) {
 		for (ssz = 0, i = 0; cp != &dp->string[i]; i++) {
 			buf[0] = dp->string[i];
 			ssz += term_strlen(tp, buf);
 		}
 		d = ssz + psz;
 	} else
 		d = sz + psz;
 
 	if (col->decimal > d && col->width > sz) {
 		padl = col->decimal - d;
 		if (padl + sz > col->width)
 			padl = col->width - sz;
 		tbl_char(tp, ASCII_NBRSP, padl);
 	} else
 		padl = 0;
 	tbl_word(tp, dp);
 	if (col->width > sz + padl)
 		tbl_char(tp, ASCII_NBRSP, col->width - sz - padl);
 }
 
 static void
 tbl_word(struct termp *tp, const struct tbl_dat *dp)
 {
 	int		 prev_font;
 
 	prev_font = tp->fonti;
 	if (dp->layout->flags & TBL_CELL_BOLD)
 		term_fontpush(tp, TERMFONT_BOLD);
 	else if (dp->layout->flags & TBL_CELL_ITALIC)
 		term_fontpush(tp, TERMFONT_UNDER);
 
 	term_word(tp, dp->string);
 
 	term_fontpopq(tp, prev_font);
 }
Index: vendor/mdocml/dist/term.c
===================================================================
--- vendor/mdocml/dist/term.c	(revision 321806)
+++ vendor/mdocml/dist/term.c	(revision 321807)
@@ -1,929 +1,995 @@
-/*	$Id: term.c,v 1.268 2017/06/08 12:54:58 schwarze Exp $ */
+/*	$Id: term.c,v 1.274 2017/07/28 14:25:48 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons 
  * Copyright (c) 2010-2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc.h"
 #include "mandoc_aux.h"
 #include "out.h"
 #include "term.h"
 #include "main.h"
 
 static	size_t		 cond_width(const struct termp *, int, int *);
 static	void		 adjbuf(struct termp_col *, size_t);
 static	void		 bufferc(struct termp *, char);
 static	void		 encode(struct termp *, const char *, size_t);
 static	void		 encode1(struct termp *, int);
 static	void		 endline(struct termp *);
 
 
 void
+term_setcol(struct termp *p, size_t maxtcol)
+{
+	if (maxtcol > p->maxtcol) {
+		p->tcols = mandoc_recallocarray(p->tcols,
+		    p->maxtcol, maxtcol, sizeof(*p->tcols));
+		p->maxtcol = maxtcol;
+	}
+	p->lasttcol = maxtcol - 1;
+	p->tcol = p->tcols;
+}
+
+void
 term_free(struct termp *p)
 {
 	for (p->tcol = p->tcols; p->tcol < p->tcols + p->maxtcol; p->tcol++)
 		free(p->tcol->buf);
 	free(p->tcols);
 	free(p->fontq);
 	free(p);
 }
 
 void
 term_begin(struct termp *p, term_margin head,
 		term_margin foot, const struct roff_meta *arg)
 {
 
 	p->headf = head;
 	p->footf = foot;
 	p->argf = arg;
 	(*p->begin)(p);
 }
 
 void
 term_end(struct termp *p)
 {
 
 	(*p->end)(p);
 }
 
 /*
  * Flush a chunk of text.  By default, break the output line each time
  * the right margin is reached, and continue output on the next line
  * at the same offset as the chunk itself.  By default, also break the
  * output line at the end of the chunk.
  * The following flags may be specified:
  *
  *  - TERMP_NOBREAK: Do not break the output line at the right margin,
  *    but only at the max right margin.  Also, do not break the output
  *    line at the end of the chunk, such that the next call can pad to
  *    the next column.  However, if less than p->trailspace blanks,
  *    which can be 0, 1, or 2, remain to the right margin, the line
  *    will be broken.
  *  - TERMP_BRTRSP: Consider trailing whitespace significant
  *    when deciding whether the chunk fits or not.
  *  - TERMP_BRIND: If the chunk does not fit and the output line has
  *    to be broken, start the next line at the right margin instead
  *    of at the offset.  Used together with TERMP_NOBREAK for the tags
  *    in various kinds of tagged lists.
  *  - TERMP_HANG: Do not break the output line at the right margin,
  *    append the next chunk after it even if this one is too long.
  *    To be used together with TERMP_NOBREAK.
  *  - TERMP_NOPAD: Start writing at the current position,
  *    do not pad with blank characters up to the offset.
  */
 void
 term_flushln(struct termp *p)
 {
 	size_t		 vis;   /* current visual position on output */
 	size_t		 vbl;   /* number of blanks to prepend to output */
 	size_t		 vend;	/* end of word visual position on output */
 	size_t		 bp;    /* visual right border position */
 	size_t		 dv;    /* temporary for visual pos calculations */
 	size_t		 j;     /* temporary loop index for p->tcol->buf */
 	size_t		 jhy;	/* last hyph before overflow w/r/t j */
 	size_t		 maxvis; /* output position of visible boundary */
 	int		 ntab;	/* number of tabs to prepend */
+	int		 breakline; /* after this word */
 
 	vbl = (p->flags & TERMP_NOPAD) || p->tcol->offset < p->viscol ?
 	    0 : p->tcol->offset - p->viscol;
 	if (p->minbl && vbl < p->minbl)
 		vbl = p->minbl;
 	maxvis = p->tcol->rmargin > p->viscol + vbl ?
 	    p->tcol->rmargin - p->viscol - vbl : 0;
 	bp = !(p->flags & TERMP_NOBREAK) ? maxvis :
 	    p->maxrmargin > p->viscol + vbl ?
 	    p->maxrmargin - p->viscol - vbl : 0;
 	vis = vend = 0;
 
-	if (p->lasttcol == 0)
+	if ((p->flags & TERMP_MULTICOL) == 0)
 		p->tcol->col = 0;
-	while (p->tcol->col < p->lastcol) {
+	while (p->tcol->col < p->tcol->lastcol) {
 
 		/*
 		 * Handle literal tab characters: collapse all
 		 * subsequent tabs into a single huge set of spaces.
 		 */
 
 		ntab = 0;
-		while (p->tcol->col < p->lastcol &&
+		while (p->tcol->col < p->tcol->lastcol &&
 		    p->tcol->buf[p->tcol->col] == '\t') {
 			vend = term_tab_next(vis);
 			vbl += vend - vis;
 			vis = vend;
 			ntab++;
 			p->tcol->col++;
 		}
 
 		/*
 		 * Count up visible word characters.  Control sequences
 		 * (starting with the CSI) aren't counted.  A space
 		 * generates a non-printing word, which is valid (the
 		 * space is printed according to regular spacing rules).
 		 */
 
 		jhy = 0;
-		for (j = p->tcol->col; j < p->lastcol; j++) {
+		breakline = 0;
+		for (j = p->tcol->col; j < p->tcol->lastcol; j++) {
+			if (p->tcol->buf[j] == '\n') {
+				if ((p->flags & TERMP_BRIND) == 0)
+					breakline = 1;
+				continue;
+			}
 			if (p->tcol->buf[j] == ' ' || p->tcol->buf[j] == '\t')
 				break;
 
 			/* Back over the last printed character. */
 			if (p->tcol->buf[j] == '\b') {
 				assert(j);
 				vend -= (*p->width)(p, p->tcol->buf[j - 1]);
 				continue;
 			}
 
 			/* Regular word. */
 			/* Break at the hyphen point if we overrun. */
 			if (vend > vis && vend < bp &&
 			    (p->tcol->buf[j] == ASCII_HYPH||
 			     p->tcol->buf[j] == ASCII_BREAK))
 				jhy = j;
 
 			/*
 			 * Hyphenation now decided, put back a real
 			 * hyphen such that we get the correct width.
 			 */
 			if (p->tcol->buf[j] == ASCII_HYPH)
 				p->tcol->buf[j] = '-';
 
 			vend += (*p->width)(p, p->tcol->buf[j]);
 		}
 
 		/*
 		 * Find out whether we would exceed the right margin.
 		 * If so, break to the next line.
 		 */
 
 		if (vend > bp && jhy == 0 && vis > 0 &&
 		    (p->flags & TERMP_BRNEVER) == 0) {
-			if (p->lasttcol)
+			if (p->flags & TERMP_MULTICOL)
 				return;
 
 			endline(p);
 			vend -= vis;
 
 			/* Use pending tabs on the new line. */
 
 			vbl = 0;
 			while (ntab--)
 				vbl = term_tab_next(vbl);
 
 			/* Re-establish indentation. */
 
 			if (p->flags & TERMP_BRIND)
 				vbl += p->tcol->rmargin;
 			else
 				vbl += p->tcol->offset;
 			maxvis = p->tcol->rmargin > vbl ?
 			    p->tcol->rmargin - vbl : 0;
 			bp = !(p->flags & TERMP_NOBREAK) ? maxvis :
 			    p->maxrmargin > vbl ?  p->maxrmargin - vbl : 0;
 		}
 
 		/*
 		 * Write out the rest of the word.
 		 */
 
-		for ( ; p->tcol->col < p->lastcol; p->tcol->col++) {
+		for ( ; p->tcol->col < p->tcol->lastcol; p->tcol->col++) {
 			if (vend > bp && jhy > 0 && p->tcol->col > jhy)
 				break;
+			if (p->tcol->buf[p->tcol->col] == '\n')
+				continue;
 			if (p->tcol->buf[p->tcol->col] == '\t')
 				break;
 			if (p->tcol->buf[p->tcol->col] == ' ') {
 				j = p->tcol->col;
-				while (p->tcol->col < p->lastcol &&
+				while (p->tcol->col < p->tcol->lastcol &&
 				    p->tcol->buf[p->tcol->col] == ' ')
 					p->tcol->col++;
 				dv = (p->tcol->col - j) * (*p->width)(p, ' ');
 				vbl += dv;
 				vend += dv;
 				break;
 			}
 			if (p->tcol->buf[p->tcol->col] == ASCII_NBRSP) {
 				vbl += (*p->width)(p, ' ');
 				continue;
 			}
 			if (p->tcol->buf[p->tcol->col] == ASCII_BREAK)
 				continue;
 
 			/*
 			 * Now we definitely know there will be
 			 * printable characters to output,
 			 * so write preceding white space now.
 			 */
 			if (vbl) {
 				(*p->advance)(p, vbl);
 				p->viscol += vbl;
 				vbl = 0;
 			}
 
 			(*p->letter)(p, p->tcol->buf[p->tcol->col]);
 			if (p->tcol->buf[p->tcol->col] == '\b')
 				p->viscol -= (*p->width)(p,
 				    p->tcol->buf[p->tcol->col - 1]);
 			else
 				p->viscol += (*p->width)(p,
 				    p->tcol->buf[p->tcol->col]);
 		}
 		vis = vend;
+
+		if (breakline == 0)
+			continue;
+
+		/* Explicitly requested output line break. */
+
+		if (p->flags & TERMP_MULTICOL)
+			return;
+
+		endline(p);
+		breakline = 0;
+		vis = vend = 0;
+
+		/* Re-establish indentation. */
+
+		vbl = p->tcol->offset;
+		maxvis = p->tcol->rmargin > vbl ?
+		    p->tcol->rmargin - vbl : 0;
+		bp = !(p->flags & TERMP_NOBREAK) ? maxvis :
+		    p->maxrmargin > vbl ?  p->maxrmargin - vbl : 0;
 	}
 
 	/*
 	 * If there was trailing white space, it was not printed;
 	 * so reset the cursor position accordingly.
 	 */
 
 	if (vis > vbl)
 		vis -= vbl;
 	else
 		vis = 0;
 
-	p->col = p->lastcol = 0;
+	p->col = p->tcol->col = p->tcol->lastcol = 0;
 	p->minbl = p->trailspace;
 	p->flags &= ~(TERMP_BACKAFTER | TERMP_BACKBEFORE | TERMP_NOPAD);
 
+	if (p->flags & TERMP_MULTICOL)
+		return;
+
 	/* Trailing whitespace is significant in some columns. */
 
 	if (vis && vbl && (TERMP_BRTRSP & p->flags))
 		vis += vbl;
 
 	/* If the column was overrun, break the line. */
 	if ((p->flags & TERMP_NOBREAK) == 0 ||
 	    ((p->flags & TERMP_HANG) == 0 &&
 	     vis + p->trailspace * (*p->width)(p, ' ') > maxvis))
 		endline(p);
 }
 
 static void
 endline(struct termp *p)
 {
 	if ((p->flags & (TERMP_NEWMC | TERMP_ENDMC)) == TERMP_ENDMC) {
 		p->mc = NULL;
 		p->flags &= ~TERMP_ENDMC;
 	}
 	if (p->mc != NULL) {
 		if (p->viscol && p->maxrmargin >= p->viscol)
 			(*p->advance)(p, p->maxrmargin - p->viscol + 1);
 		p->flags |= TERMP_NOBUF | TERMP_NOSPACE;
 		term_word(p, p->mc);
 		p->flags &= ~(TERMP_NOBUF | TERMP_NEWMC);
 	}
 	p->viscol = 0;
 	p->minbl = 0;
 	(*p->endline)(p);
 }
 
 /*
  * A newline only breaks an existing line; it won't assert vertical
  * space.  All data in the output buffer is flushed prior to the newline
  * assertion.
  */
 void
 term_newln(struct termp *p)
 {
 
 	p->flags |= TERMP_NOSPACE;
-	if (p->lastcol || p->viscol)
+	if (p->tcol->lastcol || p->viscol)
 		term_flushln(p);
 }
 
 /*
  * Asserts a vertical space (a full, empty line-break between lines).
  * Note that if used twice, this will cause two blank spaces and so on.
  * All data in the output buffer is flushed prior to the newline
  * assertion.
  */
 void
 term_vspace(struct termp *p)
 {
 
 	term_newln(p);
 	p->viscol = 0;
 	p->minbl = 0;
 	if (0 < p->skipvsp)
 		p->skipvsp--;
 	else
 		(*p->endline)(p);
 }
 
 /* Swap current and previous font; for \fP and .ft P */
 void
 term_fontlast(struct termp *p)
 {
 	enum termfont	 f;
 
 	f = p->fontl;
 	p->fontl = p->fontq[p->fonti];
 	p->fontq[p->fonti] = f;
 }
 
 /* Set font, save current, discard previous; for \f, .ft, .B etc. */
 void
 term_fontrepl(struct termp *p, enum termfont f)
 {
 
 	p->fontl = p->fontq[p->fonti];
 	p->fontq[p->fonti] = f;
 }
 
 /* Set font, save previous. */
 void
 term_fontpush(struct termp *p, enum termfont f)
 {
 
 	p->fontl = p->fontq[p->fonti];
 	if (++p->fonti == p->fontsz) {
 		p->fontsz += 8;
 		p->fontq = mandoc_reallocarray(p->fontq,
 		    p->fontsz, sizeof(*p->fontq));
 	}
 	p->fontq[p->fonti] = f;
 }
 
 /* Flush to make the saved pointer current again. */
 void
 term_fontpopq(struct termp *p, int i)
 {
 
 	assert(i >= 0);
 	if (p->fonti > i)
 		p->fonti = i;
 }
 
 /* Pop one font off the stack. */
 void
 term_fontpop(struct termp *p)
 {
 
 	assert(p->fonti);
 	p->fonti--;
 }
 
 /*
  * Handle pwords, partial words, which may be either a single word or a
  * phrase that cannot be broken down (such as a literal string).  This
  * handles word styling.
  */
 void
 term_word(struct termp *p, const char *word)
 {
 	struct roffsu	 su;
 	const char	 nbrsp[2] = { ASCII_NBRSP, 0 };
 	const char	*seq, *cp;
 	int		 sz, uc;
 	size_t		 csz, lsz, ssz;
 	enum mandoc_esc	 esc;
 
 	if ((p->flags & TERMP_NOBUF) == 0) {
 		if ((p->flags & TERMP_NOSPACE) == 0) {
 			if ((p->flags & TERMP_KEEP) == 0) {
 				bufferc(p, ' ');
 				if (p->flags & TERMP_SENTENCE)
 					bufferc(p, ' ');
 			} else
 				bufferc(p, ASCII_NBRSP);
 		}
 		if (p->flags & TERMP_PREKEEP)
 			p->flags |= TERMP_KEEP;
 		if (p->flags & TERMP_NONOSPACE)
 			p->flags |= TERMP_NOSPACE;
 		else
 			p->flags &= ~TERMP_NOSPACE;
 		p->flags &= ~(TERMP_SENTENCE | TERMP_NONEWLINE);
 		p->skipvsp = 0;
 	}
 
 	while ('\0' != *word) {
 		if ('\\' != *word) {
 			if (TERMP_NBRWORD & p->flags) {
 				if (' ' == *word) {
 					encode(p, nbrsp, 1);
 					word++;
 					continue;
 				}
 				ssz = strcspn(word, "\\ ");
 			} else
 				ssz = strcspn(word, "\\");
 			encode(p, word, ssz);
 			word += (int)ssz;
 			continue;
 		}
 
 		word++;
 		esc = mandoc_escape(&word, &seq, &sz);
 		if (ESCAPE_ERROR == esc)
 			continue;
 
 		switch (esc) {
 		case ESCAPE_UNICODE:
 			uc = mchars_num2uc(seq + 1, sz - 1);
 			break;
 		case ESCAPE_NUMBERED:
 			uc = mchars_num2char(seq, sz);
 			if (uc < 0)
 				continue;
 			break;
 		case ESCAPE_SPECIAL:
 			if (p->enc == TERMENC_ASCII) {
 				cp = mchars_spec2str(seq, sz, &ssz);
 				if (cp != NULL)
 					encode(p, cp, ssz);
 			} else {
 				uc = mchars_spec2cp(seq, sz);
 				if (uc > 0)
 					encode1(p, uc);
 			}
 			continue;
 		case ESCAPE_FONTBOLD:
 			term_fontrepl(p, TERMFONT_BOLD);
 			continue;
 		case ESCAPE_FONTITALIC:
 			term_fontrepl(p, TERMFONT_UNDER);
 			continue;
 		case ESCAPE_FONTBI:
 			term_fontrepl(p, TERMFONT_BI);
 			continue;
 		case ESCAPE_FONT:
 		case ESCAPE_FONTROMAN:
 			term_fontrepl(p, TERMFONT_NONE);
 			continue;
 		case ESCAPE_FONTPREV:
 			term_fontlast(p);
 			continue;
+		case ESCAPE_BREAK:
+			bufferc(p, '\n');
+			continue;
 		case ESCAPE_NOSPACE:
 			if (p->flags & TERMP_BACKAFTER)
 				p->flags &= ~TERMP_BACKAFTER;
 			else if (*word == '\0')
 				p->flags |= (TERMP_NOSPACE | TERMP_NONEWLINE);
 			continue;
 		case ESCAPE_HORIZ:
+			if (*seq == '|') {
+				seq++;
+				uc = -p->col;
+			} else
+				uc = 0;
 			if (a2roffsu(seq, &su, SCALE_EM) == NULL)
 				continue;
-			uc = term_hspan(p, &su) / 24;
+			uc += term_hen(p, &su);
 			if (uc > 0)
 				while (uc-- > 0)
 					bufferc(p, ASCII_NBRSP);
 			else if (p->col > (size_t)(-uc))
 				p->col += uc;
 			else {
 				uc += p->col;
 				p->col = 0;
 				if (p->tcol->offset > (size_t)(-uc)) {
 					p->ti += uc;
 					p->tcol->offset += uc;
 				} else {
 					p->ti -= p->tcol->offset;
 					p->tcol->offset = 0;
 				}
 			}
 			continue;
 		case ESCAPE_HLINE:
-			if ((seq = a2roffsu(seq, &su, SCALE_EM)) == NULL)
+			if ((cp = a2roffsu(seq, &su, SCALE_EM)) == NULL)
 				continue;
-			uc = term_hspan(p, &su) / 24;
+			uc = term_hen(p, &su);
 			if (uc <= 0) {
 				if (p->tcol->rmargin <= p->tcol->offset)
 					continue;
 				lsz = p->tcol->rmargin - p->tcol->offset;
 			} else
 				lsz = uc;
-			if (*seq == '\0')
+			if (*cp == seq[-1])
 				uc = -1;
-			else if (*seq == '\\') {
-				seq++;
+			else if (*cp == '\\') {
+				seq = cp + 1;
 				esc = mandoc_escape(&seq, &cp, &sz);
 				switch (esc) {
 				case ESCAPE_UNICODE:
 					uc = mchars_num2uc(cp + 1, sz - 1);
 					break;
 				case ESCAPE_NUMBERED:
 					uc = mchars_num2char(cp, sz);
 					break;
 				case ESCAPE_SPECIAL:
 					uc = mchars_spec2cp(cp, sz);
 					break;
 				default:
 					uc = -1;
 					break;
 				}
 			} else
-				uc = *seq;
+				uc = *cp;
 			if (uc < 0x20 || (uc > 0x7E && uc < 0xA0))
 				uc = '_';
 			if (p->enc == TERMENC_ASCII) {
 				cp = ascii_uc2str(uc);
 				csz = term_strlen(p, cp);
 				ssz = strlen(cp);
 			} else
 				csz = (*p->width)(p, uc);
 			while (lsz >= csz) {
 				if (p->enc == TERMENC_ASCII)
 					encode(p, cp, ssz);
 				else
 					encode1(p, uc);
 				lsz -= csz;
 			}
 			continue;
 		case ESCAPE_SKIPCHAR:
 			p->flags |= TERMP_BACKAFTER;
 			continue;
 		case ESCAPE_OVERSTRIKE:
 			cp = seq + sz;
 			while (seq < cp) {
 				if (*seq == '\\') {
 					mandoc_escape(&seq, NULL, NULL);
 					continue;
 				}
 				encode1(p, *seq++);
 				if (seq < cp) {
 					if (p->flags & TERMP_BACKBEFORE)
 						p->flags |= TERMP_BACKAFTER;
 					else
 						p->flags |= TERMP_BACKBEFORE;
 				}
 			}
 			/* Trim trailing backspace/blank pair. */
-			if (p->lastcol > 2 &&
-			    (p->tcol->buf[p->lastcol - 1] == ' ' ||
-			     p->tcol->buf[p->lastcol - 1] == '\t'))
-				p->lastcol -= 2;
-			if (p->col > p->lastcol)
-				p->col = p->lastcol;
+			if (p->tcol->lastcol > 2 &&
+			    (p->tcol->buf[p->tcol->lastcol - 1] == ' ' ||
+			     p->tcol->buf[p->tcol->lastcol - 1] == '\t'))
+				p->tcol->lastcol -= 2;
+			if (p->col > p->tcol->lastcol)
+				p->col = p->tcol->lastcol;
 			continue;
 		default:
 			continue;
 		}
 
 		/*
 		 * Common handling for Unicode and numbered
 		 * character escape sequences.
 		 */
 
 		if (p->enc == TERMENC_ASCII) {
 			cp = ascii_uc2str(uc);
 			encode(p, cp, strlen(cp));
 		} else {
 			if ((uc < 0x20 && uc != 0x09) ||
 			    (uc > 0x7E && uc < 0xA0))
 				uc = 0xFFFD;
 			encode1(p, uc);
 		}
 	}
 	p->flags &= ~TERMP_NBRWORD;
 }
 
 static void
 adjbuf(struct termp_col *c, size_t sz)
 {
 	if (c->maxcols == 0)
 		c->maxcols = 1024;
 	while (c->maxcols <= sz)
 		c->maxcols <<= 2;
 	c->buf = mandoc_reallocarray(c->buf, c->maxcols, sizeof(*c->buf));
 }
 
 static void
 bufferc(struct termp *p, char c)
 {
 	if (p->flags & TERMP_NOBUF) {
 		(*p->letter)(p, c);
 		return;
 	}
 	if (p->col + 1 >= p->tcol->maxcols)
 		adjbuf(p->tcol, p->col + 1);
-	if (p->lastcol <= p->col || (c != ' ' && c != ASCII_NBRSP))
+	if (p->tcol->lastcol <= p->col || (c != ' ' && c != ASCII_NBRSP))
 		p->tcol->buf[p->col] = c;
-	if (p->lastcol < ++p->col)
-		p->lastcol = p->col;
+	if (p->tcol->lastcol < ++p->col)
+		p->tcol->lastcol = p->col;
 }
 
 /*
  * See encode().
  * Do this for a single (probably unicode) value.
  * Does not check for non-decorated glyphs.
  */
 static void
 encode1(struct termp *p, int c)
 {
 	enum termfont	  f;
 
 	if (p->flags & TERMP_NOBUF) {
 		(*p->letter)(p, c);
 		return;
 	}
 
 	if (p->col + 7 >= p->tcol->maxcols)
 		adjbuf(p->tcol, p->col + 7);
 
 	f = (c == ASCII_HYPH || c > 127 || isgraph(c)) ?
 	    p->fontq[p->fonti] : TERMFONT_NONE;
 
 	if (p->flags & TERMP_BACKBEFORE) {
 		if (p->tcol->buf[p->col - 1] == ' ' ||
 		    p->tcol->buf[p->col - 1] == '\t')
 			p->col--;
 		else
 			p->tcol->buf[p->col++] = '\b';
 		p->flags &= ~TERMP_BACKBEFORE;
 	}
 	if (f == TERMFONT_UNDER || f == TERMFONT_BI) {
 		p->tcol->buf[p->col++] = '_';
 		p->tcol->buf[p->col++] = '\b';
 	}
 	if (f == TERMFONT_BOLD || f == TERMFONT_BI) {
 		if (c == ASCII_HYPH)
 			p->tcol->buf[p->col++] = '-';
 		else
 			p->tcol->buf[p->col++] = c;
 		p->tcol->buf[p->col++] = '\b';
 	}
-	if (p->lastcol <= p->col || (c != ' ' && c != ASCII_NBRSP))
+	if (p->tcol->lastcol <= p->col || (c != ' ' && c != ASCII_NBRSP))
 		p->tcol->buf[p->col] = c;
-	if (p->lastcol < ++p->col)
-		p->lastcol = p->col;
+	if (p->tcol->lastcol < ++p->col)
+		p->tcol->lastcol = p->col;
 	if (p->flags & TERMP_BACKAFTER) {
 		p->flags |= TERMP_BACKBEFORE;
 		p->flags &= ~TERMP_BACKAFTER;
 	}
 }
 
 static void
 encode(struct termp *p, const char *word, size_t sz)
 {
 	size_t		  i;
 
 	if (p->flags & TERMP_NOBUF) {
 		for (i = 0; i < sz; i++)
 			(*p->letter)(p, word[i]);
 		return;
 	}
 
 	if (p->col + 2 + (sz * 5) >= p->tcol->maxcols)
 		adjbuf(p->tcol, p->col + 2 + (sz * 5));
 
 	for (i = 0; i < sz; i++) {
 		if (ASCII_HYPH == word[i] ||
 		    isgraph((unsigned char)word[i]))
 			encode1(p, word[i]);
 		else {
-			if (p->lastcol <= p->col ||
+			if (p->tcol->lastcol <= p->col ||
 			    (word[i] != ' ' && word[i] != ASCII_NBRSP))
 				p->tcol->buf[p->col] = word[i];
 			p->col++;
 
 			/*
 			 * Postpone the effect of \z while handling
 			 * an overstrike sequence from ascii_uc2str().
 			 */
 
 			if (word[i] == '\b' &&
 			    (p->flags & TERMP_BACKBEFORE)) {
 				p->flags &= ~TERMP_BACKBEFORE;
 				p->flags |= TERMP_BACKAFTER;
 			}
 		}
 	}
-	if (p->lastcol < p->col)
-		p->lastcol = p->col;
+	if (p->tcol->lastcol < p->col)
+		p->tcol->lastcol = p->col;
 }
 
 void
 term_setwidth(struct termp *p, const char *wstr)
 {
 	struct roffsu	 su;
 	int		 iop, width;
 
 	iop = 0;
 	width = 0;
 	if (NULL != wstr) {
 		switch (*wstr) {
 		case '+':
 			iop = 1;
 			wstr++;
 			break;
 		case '-':
 			iop = -1;
 			wstr++;
 			break;
 		default:
 			break;
 		}
 		if (a2roffsu(wstr, &su, SCALE_MAX) != NULL)
 			width = term_hspan(p, &su);
 		else
 			iop = 0;
 	}
 	(*p->setwidth)(p, iop, width);
 }
 
 size_t
 term_len(const struct termp *p, size_t sz)
 {
 
 	return (*p->width)(p, ' ') * sz;
 }
 
 static size_t
 cond_width(const struct termp *p, int c, int *skip)
 {
 
 	if (*skip) {
 		(*skip) = 0;
 		return 0;
 	} else
 		return (*p->width)(p, c);
 }
 
 size_t
 term_strlen(const struct termp *p, const char *cp)
 {
 	size_t		 sz, rsz, i;
 	int		 ssz, skip, uc;
 	const char	*seq, *rhs;
 	enum mandoc_esc	 esc;
 	static const char rej[] = { '\\', ASCII_NBRSP, ASCII_HYPH,
 			ASCII_BREAK, '\0' };
 
 	/*
 	 * Account for escaped sequences within string length
 	 * calculations.  This follows the logic in term_word() as we
 	 * must calculate the width of produced strings.
 	 */
 
 	sz = 0;
 	skip = 0;
 	while ('\0' != *cp) {
 		rsz = strcspn(cp, rej);
 		for (i = 0; i < rsz; i++)
 			sz += cond_width(p, *cp++, &skip);
 
 		switch (*cp) {
 		case '\\':
 			cp++;
 			esc = mandoc_escape(&cp, &seq, &ssz);
 			if (ESCAPE_ERROR == esc)
 				continue;
 
 			rhs = NULL;
 
 			switch (esc) {
 			case ESCAPE_UNICODE:
 				uc = mchars_num2uc(seq + 1, ssz - 1);
 				break;
 			case ESCAPE_NUMBERED:
 				uc = mchars_num2char(seq, ssz);
 				if (uc < 0)
 					continue;
 				break;
 			case ESCAPE_SPECIAL:
 				if (p->enc == TERMENC_ASCII) {
 					rhs = mchars_spec2str(seq, ssz, &rsz);
 					if (rhs != NULL)
 						break;
 				} else {
 					uc = mchars_spec2cp(seq, ssz);
 					if (uc > 0)
 						sz += cond_width(p, uc, &skip);
 				}
 				continue;
 			case ESCAPE_SKIPCHAR:
 				skip = 1;
 				continue;
 			case ESCAPE_OVERSTRIKE:
 				rsz = 0;
 				rhs = seq + ssz;
 				while (seq < rhs) {
 					if (*seq == '\\') {
 						mandoc_escape(&seq, NULL, NULL);
 						continue;
 					}
 					i = (*p->width)(p, *seq++);
 					if (rsz < i)
 						rsz = i;
 				}
 				sz += rsz;
 				continue;
 			default:
 				continue;
 			}
 
 			/*
 			 * Common handling for Unicode and numbered
 			 * character escape sequences.
 			 */
 
 			if (rhs == NULL) {
 				if (p->enc == TERMENC_ASCII) {
 					rhs = ascii_uc2str(uc);
 					rsz = strlen(rhs);
 				} else {
 					if ((uc < 0x20 && uc != 0x09) ||
 					    (uc > 0x7E && uc < 0xA0))
 						uc = 0xFFFD;
 					sz += cond_width(p, uc, &skip);
 					continue;
 				}
 			}
 
 			if (skip) {
 				skip = 0;
 				break;
 			}
 
 			/*
 			 * Common handling for all escape sequences
 			 * printing more than one character.
 			 */
 
 			for (i = 0; i < rsz; i++)
 				sz += (*p->width)(p, *rhs++);
 			break;
 		case ASCII_NBRSP:
 			sz += cond_width(p, ' ', &skip);
 			cp++;
 			break;
 		case ASCII_HYPH:
 			sz += cond_width(p, '-', &skip);
 			cp++;
 			break;
 		default:
 			break;
 		}
 	}
 
 	return sz;
 }
 
 int
 term_vspan(const struct termp *p, const struct roffsu *su)
 {
 	double		 r;
 	int		 ri;
 
 	switch (su->unit) {
 	case SCALE_BU:
 		r = su->scale / 40.0;
 		break;
 	case SCALE_CM:
 		r = su->scale * 6.0 / 2.54;
 		break;
 	case SCALE_FS:
 		r = su->scale * 65536.0 / 40.0;
 		break;
 	case SCALE_IN:
 		r = su->scale * 6.0;
 		break;
 	case SCALE_MM:
 		r = su->scale * 0.006;
 		break;
 	case SCALE_PC:
 		r = su->scale;
 		break;
 	case SCALE_PT:
 		r = su->scale / 12.0;
 		break;
 	case SCALE_EN:
 	case SCALE_EM:
 		r = su->scale * 0.6;
 		break;
 	case SCALE_VS:
 		r = su->scale;
 		break;
 	default:
 		abort();
 	}
 	ri = r > 0.0 ? r + 0.4995 : r - 0.4995;
 	return ri < 66 ? ri : 1;
 }
 
 /*
- * Convert a scaling width to basic units, rounding down.
+ * Convert a scaling width to basic units, rounding towards 0.
  */
 int
 term_hspan(const struct termp *p, const struct roffsu *su)
 {
 
 	return (*p->hspan)(p, su);
+}
+
+/*
+ * Convert a scaling width to basic units, rounding to closest.
+ */
+int
+term_hen(const struct termp *p, const struct roffsu *su)
+{
+	int bu;
+
+	if ((bu = (*p->hspan)(p, su)) >= 0)
+		return (bu + 11) / 24;
+	else
+		return -((-bu + 11) / 24);
 }
Index: vendor/mdocml/dist/term.h
===================================================================
--- vendor/mdocml/dist/term.h	(revision 321806)
+++ vendor/mdocml/dist/term.h	(revision 321807)
@@ -1,152 +1,156 @@
-/*	$Id: term.h,v 1.126 2017/06/07 20:01:19 schwarze Exp $ */
+/*	$Id: term.h,v 1.130 2017/07/08 14:51:05 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons 
  * Copyright (c) 2011-2015, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
 enum	termenc {
 	TERMENC_ASCII,
 	TERMENC_LOCALE,
 	TERMENC_UTF8
 };
 
 enum	termtype {
 	TERMTYPE_CHAR,
 	TERMTYPE_PS,
 	TERMTYPE_PDF
 };
 
 enum	termfont {
 	TERMFONT_NONE = 0,
 	TERMFONT_BOLD,
 	TERMFONT_UNDER,
 	TERMFONT_BI,
 	TERMFONT__MAX
 };
 
-struct	eqn;
+struct	eqn_box;
 struct	roff_meta;
 struct	roff_node;
 struct	tbl_span;
 struct	termp;
 
 typedef void	(*term_margin)(struct termp *, const struct roff_meta *);
 
 struct	termp_tbl {
 	int		  width;	/* width in fixed chars */
 	int		  decimal;	/* decimal point position */
 };
 
 struct	termp_col {
 	int		 *buf;		/* Output buffer. */
 	size_t		  maxcols;	/* Allocated bytes in buf. */
+	size_t		  lastcol;	/* Last byte in buf. */
 	size_t		  col;		/* Byte in buf to be written. */
 	size_t		  rmargin;	/* Current right margin. */
 	size_t		  offset;	/* Current left margin. */
 };
 
 struct	termp {
 	struct rofftbl	  tbl;		/* Table configuration. */
 	struct termp_col *tcols;	/* Array of table columns. */
 	struct termp_col *tcol;		/* Current table column. */
 	size_t		  maxtcol;	/* Allocated table columns. */
 	size_t		  lasttcol;	/* Last column currently used. */
 	size_t		  line;		/* Current output line number. */
 	size_t		  defindent;	/* Default indent for text. */
 	size_t		  defrmargin;	/* Right margin of the device. */
 	size_t		  lastrmargin;	/* Right margin before the last ll. */
 	size_t		  maxrmargin;	/* Max right margin. */
 	size_t		  col;		/* Byte position in buf. */
-	size_t		  lastcol;	/* Bytes in buf. */
 	size_t		  viscol;	/* Chars on current line. */
 	size_t		  trailspace;	/* See term_flushln(). */
 	size_t		  minbl;	/* Minimum blanks before next field. */
 	int		  synopsisonly; /* Print the synopsis only. */
 	int		  mdocstyle;	/* Imitate mdoc(7) output. */
 	int		  ti;		/* Temporary indent for one line. */
 	int		  skipvsp;	/* Vertical space to skip. */
 	int		  flags;
 #define	TERMP_SENTENCE	 (1 << 0)	/* Space before a sentence. */
 #define	TERMP_NOSPACE	 (1 << 1)	/* No space before words. */
 #define	TERMP_NONOSPACE	 (1 << 2)	/* No space (no autounset). */
 #define	TERMP_NBRWORD	 (1 << 3)	/* Make next word nonbreaking. */
 #define	TERMP_KEEP	 (1 << 4)	/* Keep words together. */
 #define	TERMP_PREKEEP	 (1 << 5)	/* ...starting with the next one. */
 #define	TERMP_BACKAFTER	 (1 << 6)	/* Back up after next character. */
 #define	TERMP_BACKBEFORE (1 << 7)	/* Back up before next character. */
 #define	TERMP_NOBREAK	 (1 << 8)	/* See term_flushln(). */
 #define	TERMP_BRTRSP	 (1 << 9)	/* See term_flushln(). */
 #define	TERMP_BRIND	 (1 << 10)	/* See term_flushln(). */
 #define	TERMP_HANG	 (1 << 11)	/* See term_flushln(). */
 #define	TERMP_NOPAD	 (1 << 12)	/* See term_flushln(). */
 #define	TERMP_NOSPLIT	 (1 << 13)	/* Do not break line before .An. */
 #define	TERMP_SPLIT	 (1 << 14)	/* Break line before .An. */
 #define	TERMP_NONEWLINE	 (1 << 15)	/* No line break in nofill mode. */
 #define	TERMP_BRNEVER	 (1 << 16)	/* Don't even break at maxrmargin. */
 #define	TERMP_NOBUF	 (1 << 17)	/* Bypass output buffer. */
 #define	TERMP_NEWMC	 (1 << 18)	/* No .mc printed yet. */
 #define	TERMP_ENDMC	 (1 << 19)	/* Next break ends .mc mode. */
+#define	TERMP_MULTICOL	 (1 << 20)	/* Multiple column mode. */
 	enum termtype	  type;		/* Terminal, PS, or PDF. */
 	enum termenc	  enc;		/* Type of encoding. */
 	enum termfont	  fontl;	/* Last font set. */
 	enum termfont	 *fontq;	/* Symmetric fonts. */
 	int		  fontsz;	/* Allocated size of font stack */
 	int		  fonti;	/* Index of font stack. */
 	term_margin	  headf;	/* invoked to print head */
 	term_margin	  footf;	/* invoked to print foot */
 	void		(*letter)(struct termp *, int);
 	void		(*begin)(struct termp *);
 	void		(*end)(struct termp *);
 	void		(*endline)(struct termp *);
 	void		(*advance)(struct termp *, size_t);
 	void		(*setwidth)(struct termp *, int, int);
 	size_t		(*width)(const struct termp *, int);
 	int		(*hspan)(const struct termp *,
 				const struct roffsu *);
 	const void	 *argf;		/* arg for headf/footf */
 	const char	 *mc;		/* Margin character. */
 	struct termp_ps	 *ps;
 };
 
 
 const char	 *ascii_uc2str(int);
 
 void		  roff_term_pre(struct termp *, const struct roff_node *);
 
-void		  term_eqn(struct termp *, const struct eqn *);
+void		  term_eqn(struct termp *, const struct eqn_box *);
 void		  term_tbl(struct termp *, const struct tbl_span *);
 void		  term_free(struct termp *);
+void		  term_setcol(struct termp *, size_t);
 void		  term_newln(struct termp *);
 void		  term_vspace(struct termp *);
 void		  term_word(struct termp *, const char *);
 void		  term_flushln(struct termp *);
 void		  term_begin(struct termp *, term_margin,
 			term_margin, const struct roff_meta *);
 void		  term_end(struct termp *);
 
 void		  term_setwidth(struct termp *, const char *);
 int		  term_hspan(const struct termp *, const struct roffsu *);
+int		  term_hen(const struct termp *, const struct roffsu *);
 int		  term_vspan(const struct termp *, const struct roffsu *);
 size_t		  term_strlen(const struct termp *, const char *);
 size_t		  term_len(const struct termp *, size_t);
 
 void		  term_tab_set(const struct termp *, const char *);
+void		  term_tab_iset(size_t);
 size_t		  term_tab_next(size_t);
 
 void		  term_fontpush(struct termp *, enum termfont);
 void		  term_fontpop(struct termp *);
 void		  term_fontpopq(struct termp *, int);
 void		  term_fontrepl(struct termp *, enum termfont);
 void		  term_fontlast(struct termp *);
Index: vendor/mdocml/dist/term_ascii.c
===================================================================
--- vendor/mdocml/dist/term_ascii.c	(revision 321806)
+++ vendor/mdocml/dist/term_ascii.c	(revision 321807)
@@ -1,387 +1,387 @@
-/*	$Id: term_ascii.c,v 1.57 2017/06/07 17:38:26 schwarze Exp $ */
+/*	$Id: term_ascii.c,v 1.58 2017/06/14 14:24:20 schwarze Exp $ */
 /*
  * Copyright (c) 2010, 2011 Kristaps Dzonsons 
  * Copyright (c) 2014, 2015, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 #if HAVE_WCHAR
 #include 
 #endif
 #include 
 #include 
 #include 
 #include 
 #if HAVE_WCHAR
 #include 
 #endif
 
 #include "mandoc.h"
 #include "mandoc_aux.h"
 #include "out.h"
 #include "term.h"
 #include "manconf.h"
 #include "main.h"
 
 static	struct termp	 *ascii_init(enum termenc, const struct manoutput *);
 static	int		  ascii_hspan(const struct termp *,
 				const struct roffsu *);
 static	size_t		  ascii_width(const struct termp *, int);
 static	void		  ascii_advance(struct termp *, size_t);
 static	void		  ascii_begin(struct termp *);
 static	void		  ascii_end(struct termp *);
 static	void		  ascii_endline(struct termp *);
 static	void		  ascii_letter(struct termp *, int);
 static	void		  ascii_setwidth(struct termp *, int, int);
 
 #if HAVE_WCHAR
 static	void		  locale_advance(struct termp *, size_t);
 static	void		  locale_endline(struct termp *);
 static	void		  locale_letter(struct termp *, int);
 static	size_t		  locale_width(const struct termp *, int);
 #endif
 
 
 static struct termp *
 ascii_init(enum termenc enc, const struct manoutput *outopts)
 {
 #if HAVE_WCHAR
 	char		*v;
 #endif
 	struct termp	*p;
 
 	p = mandoc_calloc(1, sizeof(*p));
 	p->tcol = p->tcols = mandoc_calloc(1, sizeof(*p->tcol));
 	p->maxtcol = 1;
 
 	p->line = 1;
 	p->defrmargin = p->lastrmargin = 78;
 	p->fontq = mandoc_reallocarray(NULL,
 	     (p->fontsz = 8), sizeof(*p->fontq));
 	p->fontq[0] = p->fontl = TERMFONT_NONE;
 
 	p->begin = ascii_begin;
 	p->end = ascii_end;
 	p->hspan = ascii_hspan;
 	p->type = TERMTYPE_CHAR;
 
 	p->enc = TERMENC_ASCII;
 	p->advance = ascii_advance;
 	p->endline = ascii_endline;
 	p->letter = ascii_letter;
 	p->setwidth = ascii_setwidth;
 	p->width = ascii_width;
 
 #if HAVE_WCHAR
 	if (TERMENC_ASCII != enc) {
 
 		/*
 		 * Do not change any of this to LC_ALL.  It might break
 		 * the formatting by subtly changing the behaviour of
 		 * various functions, for example strftime(3).  As a
 		 * worst case, it might even cause buffer overflows.
 		 */
 
 		v = TERMENC_LOCALE == enc ?
 		    setlocale(LC_CTYPE, "") :
 		    setlocale(LC_CTYPE, UTF8_LOCALE);
 		if (NULL != v && MB_CUR_MAX > 1) {
 			p->enc = enc;
 			p->advance = locale_advance;
 			p->endline = locale_endline;
 			p->letter = locale_letter;
 			p->width = locale_width;
 		}
 	}
 #endif
 
 	if (outopts->mdoc) {
 		p->mdocstyle = 1;
 		p->defindent = 5;
 	}
 	if (outopts->indent)
 		p->defindent = outopts->indent;
 	if (outopts->width)
 		p->defrmargin = outopts->width;
 	if (outopts->synopsisonly)
 		p->synopsisonly = 1;
 
 	return p;
 }
 
 void *
 ascii_alloc(const struct manoutput *outopts)
 {
 
 	return ascii_init(TERMENC_ASCII, outopts);
 }
 
 void *
 utf8_alloc(const struct manoutput *outopts)
 {
 
 	return ascii_init(TERMENC_UTF8, outopts);
 }
 
 void *
 locale_alloc(const struct manoutput *outopts)
 {
 
 	return ascii_init(TERMENC_LOCALE, outopts);
 }
 
 static void
 ascii_setwidth(struct termp *p, int iop, int width)
 {
 
 	width /= 24;
 	p->tcol->rmargin = p->defrmargin;
 	if (iop > 0)
 		p->defrmargin += width;
 	else if (iop == 0)
 		p->defrmargin = width ? (size_t)width : p->lastrmargin;
 	else if (p->defrmargin > (size_t)width)
 		p->defrmargin -= width;
 	else
 		p->defrmargin = 0;
 	p->lastrmargin = p->tcol->rmargin;
 	p->tcol->rmargin = p->maxrmargin = p->defrmargin;
 }
 
 void
 terminal_sepline(void *arg)
 {
 	struct termp	*p;
 	size_t		 i;
 
 	p = (struct termp *)arg;
 	(*p->endline)(p);
 	for (i = 0; i < p->defrmargin; i++)
 		(*p->letter)(p, '-');
 	(*p->endline)(p);
 	(*p->endline)(p);
 }
 
 static size_t
 ascii_width(const struct termp *p, int c)
 {
 
 	return 1;
 }
 
 void
 ascii_free(void *arg)
 {
 
 	term_free((struct termp *)arg);
 }
 
 static void
 ascii_letter(struct termp *p, int c)
 {
 
 	putchar(c);
 }
 
 static void
 ascii_begin(struct termp *p)
 {
 
 	(*p->headf)(p, p->argf);
 }
 
 static void
 ascii_end(struct termp *p)
 {
 
 	(*p->footf)(p, p->argf);
 }
 
 static void
 ascii_endline(struct termp *p)
 {
 
 	p->line++;
 	p->tcol->offset -= p->ti;
 	p->ti = 0;
 	putchar('\n');
 }
 
 static void
 ascii_advance(struct termp *p, size_t len)
 {
 	size_t		i;
 
 	for (i = 0; i < len; i++)
 		putchar(' ');
 }
 
 static int
 ascii_hspan(const struct termp *p, const struct roffsu *su)
 {
 	double		 r;
 
 	switch (su->unit) {
 	case SCALE_BU:
 		r = su->scale;
 		break;
 	case SCALE_CM:
 		r = su->scale * 240.0 / 2.54;
 		break;
 	case SCALE_FS:
 		r = su->scale * 65536.0;
 		break;
 	case SCALE_IN:
 		r = su->scale * 240.0;
 		break;
 	case SCALE_MM:
 		r = su->scale * 0.24;
 		break;
 	case SCALE_VS:
 	case SCALE_PC:
 		r = su->scale * 40.0;
 		break;
 	case SCALE_PT:
 		r = su->scale * 10.0 / 3.0;
 		break;
 	case SCALE_EN:
 	case SCALE_EM:
 		r = su->scale * 24.0;
 		break;
 	default:
 		abort();
 	}
 	return r > 0.0 ? r + 0.01 : r - 0.01;
 }
 
 const char *
 ascii_uc2str(int uc)
 {
 	static const char nbrsp[2] = { ASCII_NBRSP, '\0' };
 	static const char *tab[] = {
 	"","","","","","","","",
 	"",	"\t",	"",	"",	"",	"",	"",	"",
 	"","","","","","","","",
 	"","",	"","","",	"",	"",	"",
 	" ",	"!",	"\"",	"#",	"$",	"%",	"&",	"'",
 	"(",	")",	"*",	"+",	",",	"-",	".",	"/",
 	"0",	"1",	"2",	"3",	"4",	"5",	"6",	"7",
 	"8",	"9",	":",	";",	"<",	"=",	">",	"?",
 	"@",	"A",	"B",	"C",	"D",	"E",	"F",	"G",
 	"H",	"I",	"J",	"K",	"L",	"M",	"N",	"O",
 	"P",	"Q",	"R",	"S",	"T",	"U",	"V",	"W",
 	"X",	"Y",	"Z",	"[",	"\\",	"]",	"^",	"_",
 	"`",	"a",	"b",	"c",	"d",	"e",	"f",	"g",
 	"h",	"i",	"j",	"k",	"l",	"m",	"n",	"o",
 	"p",	"q",	"r",	"s",	"t",	"u",	"v",	"w",
 	"x",	"y",	"z",	"{",	"|",	"}",	"~",	"",
 	"<80>",	"<81>",	"<82>",	"<83>",	"<84>",	"<85>",	"<86>",	"<87>",
 	"<88>",	"<89>",	"<8A>",	"<8B>",	"<8C>",	"<8D>",	"<8E>",	"<8F>",
 	"<90>",	"<91>",	"<92>",	"<93>",	"<94>",	"<95>",	"<96>",	"<97>",
-	"<99>",	"<99>",	"<9A>",	"<9B>",	"<9C>",	"<9D>",	"<9E>",	"<9F>",
+	"<98>",	"<99>",	"<9A>",	"<9B>",	"<9C>",	"<9D>",	"<9E>",	"<9F>",
 	nbrsp,	"!",	"/\bc",	"GBP",	"o\bx",	"=\bY",	"|",	"",
 	"\"",	"(C)",	"_\ba",	"<<",	"~",	"",	"(R)",	"-",
 	"","+-",	"2",	"3",	"'",	",\bu",	"",".",
 	",",	"1",	"_\bo",	">>",	"1/4",	"1/2",	"3/4",	"?",
 	"`\bA",	"'\bA",	"^\bA",	"~\bA",	"\"\bA","o\bA",	"AE",	",\bC",
 	"`\bE",	"'\bE",	"^\bE",	"\"\bE","`\bI",	"'\bI",	"^\bI",	"\"\bI",
 	"-\bD",	"~\bN",	"`\bO",	"'\bO",	"^\bO",	"~\bO",	"\"\bO","x",
 	"/\bO",	"`\bU",	"'\bU",	"^\bU",	"\"\bU","'\bY",	"Th",	"ss",
 	"`\ba",	"'\ba",	"^\ba",	"~\ba",	"\"\ba","o\ba",	"ae",	",\bc",
 	"`\be",	"'\be",	"^\be",	"\"\be","`\bi",	"'\bi",	"^\bi",	"\"\bi",
 	"d",	"~\bn",	"`\bo",	"'\bo",	"^\bo",	"~\bo",	"\"\bo","-:-",
 	"/\bo",	"`\bu",	"'\bu",	"^\bu",	"\"\bu","'\by",	"th",	"\"\by",
 	"A",	"a",	"A",	"a",	"A",	"a",	"'\bC",	"'\bc",
 	"^\bC",	"^\bc",	"C",	"c",	"C",	"c",	"D",	"d",
 	"/\bD",	"/\bd",	"E",	"e",	"E",	"e",	"E",	"e",
 	"E",	"e",	"E",	"e",	"^\bG",	"^\bg",	"G",	"g",
 	"G",	"g",	",\bG",	",\bg",	"^\bH",	"^\bh",	"/\bH",	"/\bh",
 	"~\bI",	"~\bi",	"I",	"i",	"I",	"i",	"I",	"i",
 	"I",	"i",	"IJ",	"ij",	"^\bJ",	"^\bj",	",\bK",	",\bk",
 	"q",	"'\bL",	"'\bl",	",\bL",	",\bl",	"L",	"l",	"L",
 	"l",	"/\bL",	"/\bl",	"'\bN",	"'\bn",	",\bN",	",\bn",	"N",
 	"n",	"'n",	"Ng",	"ng",	"O",	"o",	"O",	"o",
 	"O",	"o",	"OE",	"oe",	"'\bR",	"'\br",	",\bR",	",\br",
 	"R",	"r",	"'\bS",	"'\bs",	"^\bS",	"^\bs",	",\bS",	",\bs",
 	"S",	"s",	",\bT",	",\bt",	"T",	"t",	"/\bT",	"/\bt",
 	"~\bU",	"~\bu",	"U",	"u",	"U",	"u",	"U",	"u",
 	"U",	"u",	"U",	"u",	"^\bW",	"^\bw",	"^\bY",	"^\by",
 	"\"\bY","'\bZ",	"'\bz",	"Z",	"z",	"Z",	"z",	"s",
 	"b",	"B",	"B",	"b",	"6",	"6",	"O",	"C",
 	"c",	"D",	"D",	"D",	"d",	"d",	"3",	"@",
 	"E",	"F",	",\bf",	"G",	"G",	"hv",	"I",	"/\bI",
 	"K",	"k",	"/\bl",	"l",	"W",	"N",	"n",	"~\bO",
 	"O",	"o",	"OI",	"oi",	"P",	"p",	"YR",	"2",
 	"2",	"SH",	"sh",	"t",	"T",	"t",	"T",	"U",
 	"u",	"Y",	"V",	"Y",	"y",	"/\bZ",	"/\bz",	"ZH",
 	"ZH",	"zh",	"zh",	"/\b2",	"5",	"5",	"ts",	"w",
 	"|",	"||",	"|=",	"!",	"DZ",	"Dz",	"dz",	"LJ",
 	"Lj",	"lj",	"NJ",	"Nj",	"nj",	"A",	"a",	"I",
 	"i",	"O",	"o",	"U",	"u",	"U",	"u",	"U",
 	"u",	"U",	"u",	"U",	"u",	"@",	"A",	"a",
 	"A",	"a",	"AE",	"ae",	"/\bG",	"/\bg",	"G",	"g",
 	"K",	"k",	"O",	"o",	"O",	"o",	"ZH",	"zh",
 	"j",	"DZ",	"Dz",	"dz",	"'\bG",	"'\bg",	"HV",	"W",
 	"`\bN",	"`\bn",	"A",	"a",	"'\bAE","'\bae","O",	"o"};
 
 	assert(uc >= 0);
 	if ((size_t)uc < sizeof(tab)/sizeof(tab[0]))
 		return tab[uc];
 	return mchars_uc2str(uc);
 }
 
 #if HAVE_WCHAR
 static size_t
 locale_width(const struct termp *p, int c)
 {
 	int		rc;
 
 	if (c == ASCII_NBRSP)
 		c = ' ';
 	rc = wcwidth(c);
 	if (rc < 0)
 		rc = 0;
 	return rc;
 }
 
 static void
 locale_advance(struct termp *p, size_t len)
 {
 	size_t		i;
 
 	for (i = 0; i < len; i++)
 		putwchar(L' ');
 }
 
 static void
 locale_endline(struct termp *p)
 {
 
 	p->line++;
 	p->tcol->offset -= p->ti;
 	p->ti = 0;
 	putwchar(L'\n');
 }
 
 static void
 locale_letter(struct termp *p, int c)
 {
 
 	putwchar(c);
 }
 #endif
Index: vendor/mdocml/dist/term_tab.c
===================================================================
--- vendor/mdocml/dist/term_tab.c	(revision 321806)
+++ vendor/mdocml/dist/term_tab.c	(revision 321807)
@@ -1,117 +1,128 @@
 /*	$OpenBSD: term.c,v 1.119 2017/01/08 18:08:44 schwarze Exp $ */
 /*
  * Copyright (c) 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include 
 
 #include 
 
 #include "mandoc_aux.h"
 #include "out.h"
 #include "term.h"
 
 struct tablist {
 	size_t	*t;	/* Allocated array of tab positions. */
 	size_t	 s;	/* Allocated number of positions. */
 	size_t	 n;	/* Currently used number of positions. */
 };
 
 static struct {
 	struct tablist	 a;	/* All tab positions for lookup. */
 	struct tablist	 p;	/* Periodic tab positions to add. */
 	size_t		 d;	/* Default tab width in units of n. */
 } tabs;
 
 
 void
 term_tab_set(const struct termp *p, const char *arg)
 {
 	static int	 recording_period;
 
 	struct roffsu	 su;
 	struct tablist	*tl;
 	size_t		 pos;
 	int		 add;
 
 	/* Special arguments: clear all tabs or switch lists. */
 
 	if (arg == NULL) {
 		tabs.a.n = tabs.p.n = 0;
 		recording_period = 0;
 		if (tabs.d == 0) {
 			a2roffsu(".8i", &su, SCALE_IN);
-			tabs.d = term_hspan(p, &su) / 24;
+			tabs.d = term_hen(p, &su);
 		}
 		return;
 	}
 	if (arg[0] == 'T' && arg[1] == '\0') {
 		recording_period = 1;
 		return;
 	}
 
 	/* Parse the sign, the number, and the unit. */
 
 	if (*arg == '+') {
 		add = 1;
 		arg++;
 	} else
 		add = 0;
 	if (a2roffsu(arg, &su, SCALE_EM) == NULL)
 		return;
 
 	/* Select the list, and extend it if it is full. */
 
 	tl = recording_period ? &tabs.p : &tabs.a;
 	if (tl->n >= tl->s) {
 		tl->s += 8;
 		tl->t = mandoc_reallocarray(tl->t, tl->s, sizeof(*tl->t));
 	}
 
 	/* Append the new position. */
 
-	pos = term_hspan(p, &su);
+	pos = term_hen(p, &su);
 	tl->t[tl->n] = pos;
 	if (add && tl->n)
 		tl->t[tl->n] += tl->t[tl->n - 1];
 	tl->n++;
 }
 
+/*
+ * Simplified version without a parser,
+ * never incremental, never periodic, for use by tbl(7).
+ */
+void
+term_tab_iset(size_t inc)
+{
+	if (tabs.a.n >= tabs.a.s) {
+		tabs.a.s += 8;
+		tabs.a.t = mandoc_reallocarray(tabs.a.t, tabs.a.s,
+		    sizeof(*tabs.a.t));
+	}
+	tabs.a.t[tabs.a.n++] = inc;
+}
+
 size_t
 term_tab_next(size_t prev)
 {
 	size_t	 i, j;
 
 	for (i = 0;; i++) {
 		if (i == tabs.a.n) {
 			if (tabs.p.n == 0)
 				return prev;
-/*
-				return i ? prev :
-				    (prev / tabs.d + 1) * tabs.d;
- */
 			tabs.a.n += tabs.p.n;
 			if (tabs.a.s < tabs.a.n) {
 				tabs.a.s = tabs.a.n;
 				tabs.a.t = mandoc_reallocarray(tabs.a.t,
 				    tabs.a.s, sizeof(*tabs.a.t));
 			}
 			for (j = 0; j < tabs.p.n; j++)
 				tabs.a.t[i + j] = tabs.p.t[j] +
 				    (i ? tabs.a.t[i - 1] : 0);
 		}
-		if (prev < tabs.a.t[i] / 24)
-			return tabs.a.t[i] / 24;
+		if (prev < tabs.a.t[i])
+			return tabs.a.t[i];
 	}
 }
Index: vendor/mdocml/dist/test-recallocarray.c
===================================================================
--- vendor/mdocml/dist/test-recallocarray.c	(nonexistent)
+++ vendor/mdocml/dist/test-recallocarray.c	(revision 321807)
@@ -0,0 +1,11 @@
+#include 
+
+int
+main(void)
+{
+	void	*p;
+
+	if ((p = calloc(2, 2)) == NULL)
+		return 1;
+	return !recallocarray(p, 2, 3, 2);
+}

Property changes on: vendor/mdocml/dist/test-recallocarray.c
___________________________________________________________________
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
Added: svn:keywords
## -0,0 +1 ##
+FreeBSD=%H
\ No newline at end of property
Added: svn:mime-type
## -0,0 +1 ##
+text/plain
\ No newline at end of property
Index: vendor/mdocml/dist/tree.c
===================================================================
--- vendor/mdocml/dist/tree.c	(revision 321806)
+++ vendor/mdocml/dist/tree.c	(revision 321807)
@@ -1,407 +1,403 @@
-/*	$Id: tree.c,v 1.74 2017/04/24 23:06:18 schwarze Exp $ */
+/*	$Id: tree.c,v 1.77 2017/07/08 14:51:05 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2011, 2014 Kristaps Dzonsons 
  * Copyright (c) 2013, 2014, 2015, 2017 Ingo Schwarze 
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include "config.h"
 
 #include 
 
 #include 
 #include 
 #include 
 #include 
 #include 
 
 #include "mandoc.h"
 #include "roff.h"
 #include "mdoc.h"
 #include "man.h"
 #include "main.h"
 
 static	void	print_box(const struct eqn_box *, int);
 static	void	print_man(const struct roff_node *, int);
 static	void	print_meta(const struct roff_meta *);
 static	void	print_mdoc(const struct roff_node *, int);
 static	void	print_span(const struct tbl_span *, int);
 
 
 void
 tree_mdoc(void *arg, const struct roff_man *mdoc)
 {
 	print_meta(&mdoc->meta);
 	putchar('\n');
 	print_mdoc(mdoc->first->child, 0);
 }
 
 void
 tree_man(void *arg, const struct roff_man *man)
 {
 	print_meta(&man->meta);
 	if (man->meta.hasbody == 0)
 		puts("body  = empty");
 	putchar('\n');
 	print_man(man->first->child, 0);
 }
 
 static void
 print_meta(const struct roff_meta *meta)
 {
 	if (meta->title != NULL)
 		printf("title = \"%s\"\n", meta->title);
 	if (meta->name != NULL)
 		printf("name  = \"%s\"\n", meta->name);
 	if (meta->msec != NULL)
 		printf("sec   = \"%s\"\n", meta->msec);
 	if (meta->vol != NULL)
 		printf("vol   = \"%s\"\n", meta->vol);
 	if (meta->arch != NULL)
 		printf("arch  = \"%s\"\n", meta->arch);
 	if (meta->os != NULL)
 		printf("os    = \"%s\"\n", meta->os);
 	if (meta->date != NULL)
 		printf("date  = \"%s\"\n", meta->date);
 }
 
 static void
 print_mdoc(const struct roff_node *n, int indent)
 {
 	const char	 *p, *t;
 	int		  i, j;
 	size_t		  argc;
 	struct mdoc_argv *argv;
 
 	if (n == NULL)
 		return;
 
 	argv = NULL;
 	argc = 0;
 	t = p = NULL;
 
 	switch (n->type) {
 	case ROFFT_ROOT:
 		t = "root";
 		break;
 	case ROFFT_BLOCK:
 		t = "block";
 		break;
 	case ROFFT_HEAD:
 		t = "head";
 		break;
 	case ROFFT_BODY:
 		if (n->end)
 			t = "body-end";
 		else
 			t = "body";
 		break;
 	case ROFFT_TAIL:
 		t = "tail";
 		break;
 	case ROFFT_ELEM:
 		t = "elem";
 		break;
 	case ROFFT_TEXT:
 		t = "text";
 		break;
 	case ROFFT_TBL:
 		break;
 	case ROFFT_EQN:
 		t = "eqn";
 		break;
 	default:
 		abort();
 	}
 
 	switch (n->type) {
 	case ROFFT_TEXT:
 		p = n->string;
 		break;
 	case ROFFT_BODY:
 		p = roff_name[n->tok];
 		break;
 	case ROFFT_HEAD:
 		p = roff_name[n->tok];
 		break;
 	case ROFFT_TAIL:
 		p = roff_name[n->tok];
 		break;
 	case ROFFT_ELEM:
 		p = roff_name[n->tok];
 		if (n->args) {
 			argv = n->args->argv;
 			argc = n->args->argc;
 		}
 		break;
 	case ROFFT_BLOCK:
 		p = roff_name[n->tok];
 		if (n->args) {
 			argv = n->args->argv;
 			argc = n->args->argc;
 		}
 		break;
 	case ROFFT_TBL:
 		break;
 	case ROFFT_EQN:
 		p = "EQ";
 		break;
 	case ROFFT_ROOT:
 		p = "root";
 		break;
 	default:
 		abort();
 	}
 
 	if (n->span) {
 		assert(NULL == p && NULL == t);
 		print_span(n->span, indent);
 	} else {
 		for (i = 0; i < indent; i++)
 			putchar(' ');
 
 		printf("%s (%s)", p, t);
 
 		for (i = 0; i < (int)argc; i++) {
 			printf(" -%s", mdoc_argnames[argv[i].arg]);
 			if (argv[i].sz > 0)
 				printf(" [");
 			for (j = 0; j < (int)argv[i].sz; j++)
 				printf(" [%s]", argv[i].value[j]);
 			if (argv[i].sz > 0)
 				printf(" ]");
 		}
 
 		putchar(' ');
 		if (NODE_DELIMO & n->flags)
 			putchar('(');
 		if (NODE_LINE & n->flags)
 			putchar('*');
 		printf("%d:%d", n->line, n->pos + 1);
 		if (NODE_DELIMC & n->flags)
 			putchar(')');
 		if (NODE_EOS & n->flags)
 			putchar('.');
 		if (NODE_BROKEN & n->flags)
 			printf(" BROKEN");
 		if (NODE_NOSRC & n->flags)
 			printf(" NOSRC");
 		if (NODE_NOPRT & n->flags)
 			printf(" NOPRT");
 		putchar('\n');
 	}
 
 	if (n->eqn)
-		print_box(n->eqn->root->first, indent + 4);
+		print_box(n->eqn->first, indent + 4);
 	if (n->child)
 		print_mdoc(n->child, indent +
 		    (n->type == ROFFT_BLOCK ? 2 : 4));
 	if (n->next)
 		print_mdoc(n->next, indent);
 }
 
 static void
 print_man(const struct roff_node *n, int indent)
 {
 	const char	 *p, *t;
 	int		  i;
 
 	if (n == NULL)
 		return;
 
 	t = p = NULL;
 
 	switch (n->type) {
 	case ROFFT_ROOT:
 		t = "root";
 		break;
 	case ROFFT_ELEM:
 		t = "elem";
 		break;
 	case ROFFT_TEXT:
 		t = "text";
 		break;
 	case ROFFT_BLOCK:
 		t = "block";
 		break;
 	case ROFFT_HEAD:
 		t = "head";
 		break;
 	case ROFFT_BODY:
 		t = "body";
 		break;
 	case ROFFT_TBL:
 		break;
 	case ROFFT_EQN:
 		t = "eqn";
 		break;
 	default:
 		abort();
 	}
 
 	switch (n->type) {
 	case ROFFT_TEXT:
 		p = n->string;
 		break;
 	case ROFFT_ELEM:
 	case ROFFT_BLOCK:
 	case ROFFT_HEAD:
 	case ROFFT_BODY:
 		p = roff_name[n->tok];
 		break;
 	case ROFFT_ROOT:
 		p = "root";
 		break;
 	case ROFFT_TBL:
 		break;
 	case ROFFT_EQN:
 		p = "EQ";
 		break;
 	default:
 		abort();
 	}
 
 	if (n->span) {
 		assert(NULL == p && NULL == t);
 		print_span(n->span, indent);
 	} else {
 		for (i = 0; i < indent; i++)
 			putchar(' ');
 		printf("%s (%s) ", p, t);
 		if (NODE_LINE & n->flags)
 			putchar('*');
 		printf("%d:%d", n->line, n->pos + 1);
 		if (NODE_EOS & n->flags)
 			putchar('.');
 		putchar('\n');
 	}
 
 	if (n->eqn)
-		print_box(n->eqn->root->first, indent + 4);
+		print_box(n->eqn->first, indent + 4);
 	if (n->child)
 		print_man(n->child, indent +
 		    (n->type == ROFFT_BLOCK ? 2 : 4));
 	if (n->next)
 		print_man(n->next, indent);
 }
 
 static void
 print_box(const struct eqn_box *ep, int indent)
 {
 	int		 i;
 	const char	*t;
 
 	static const char *posnames[] = {
 	    NULL, "sup", "subsup", "sub",
 	    "to", "from", "fromto",
 	    "over", "sqrt", NULL };
 
 	if (NULL == ep)
 		return;
 	for (i = 0; i < indent; i++)
 		putchar(' ');
 
 	t = NULL;
 	switch (ep->type) {
-	case EQN_ROOT:
-		t = "eqn-root";
-		break;
-	case EQN_LISTONE:
 	case EQN_LIST:
 		t = "eqn-list";
 		break;
 	case EQN_SUBEXPR:
 		t = "eqn-expr";
 		break;
 	case EQN_TEXT:
 		t = "eqn-text";
 		break;
 	case EQN_PILE:
 		t = "eqn-pile";
 		break;
 	case EQN_MATRIX:
 		t = "eqn-matrix";
 		break;
 	}
 
 	fputs(t, stdout);
 	if (ep->pos)
 		printf(" pos=%s", posnames[ep->pos]);
 	if (ep->left)
 		printf(" left=\"%s\"", ep->left);
 	if (ep->right)
 		printf(" right=\"%s\"", ep->right);
 	if (ep->top)
 		printf(" top=\"%s\"", ep->top);
 	if (ep->bottom)
 		printf(" bottom=\"%s\"", ep->bottom);
 	if (ep->text)
 		printf(" text=\"%s\"", ep->text);
 	if (ep->font)
 		printf(" font=%d", ep->font);
 	if (ep->size != EQN_DEFSIZE)
 		printf(" size=%d", ep->size);
 	if (ep->expectargs != UINT_MAX && ep->expectargs != ep->args)
 		printf(" badargs=%zu(%zu)", ep->args, ep->expectargs);
 	else if (ep->args)
 		printf(" args=%zu", ep->args);
 	putchar('\n');
 
 	print_box(ep->first, indent + 4);
 	print_box(ep->next, indent);
 }
 
 static void
 print_span(const struct tbl_span *sp, int indent)
 {
 	const struct tbl_dat *dp;
 	int		 i;
 
 	for (i = 0; i < indent; i++)
 		putchar(' ');
 
 	switch (sp->pos) {
 	case TBL_SPAN_HORIZ:
 		putchar('-');
 		return;
 	case TBL_SPAN_DHORIZ:
 		putchar('=');
 		return;
 	default:
 		break;
 	}
 
 	for (dp = sp->first; dp; dp = dp->next) {
 		switch (dp->pos) {
 		case TBL_DATA_HORIZ:
 		case TBL_DATA_NHORIZ:
 			putchar('-');
 			continue;
 		case TBL_DATA_DHORIZ:
 		case TBL_DATA_NDHORIZ:
 			putchar('=');
 			continue;
 		default:
 			break;
 		}
 		printf("[\"%s\"", dp->string ? dp->string : "");
 		if (dp->spans)
 			printf("(%d)", dp->spans);
 		if (NULL == dp->layout)
 			putchar('*');
 		putchar(']');
 		putchar(' ');
 	}
 
 	printf("(tbl) %d:1\n", sp->line);
 }