Index: head/shells/ksh93-devel/Makefile
===================================================================
--- head/shells/ksh93-devel/Makefile	(revision 510095)
+++ head/shells/ksh93-devel/Makefile	(revision 510096)
@@ -1,51 +1,51 @@
 # $FreeBSD$
 
 PORTNAME=	ksh93
 PORTVERSION=	${AST_COMMIT_DATE}
 CATEGORIES=	shells
 PKGNAMESUFFIX=	-devel
 
 MAINTAINER=	cy@FreeBSD.org
 COMMENT=	Development branch of AT&T KornShell 93
 
 LICENSE=	EPL
 
 USES=		compiler:c11 meson ninja python:build
 
-HASH=		5981a47
-AST_COMMIT_DATE=	2019.08.11
+HASH=		251e90c1
+AST_COMMIT_DATE=	2019.08.28
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	att
 GH_PROJECT=	ast
 GH_TAGNAME=	${HASH}
 
 KSH_CONFLICTS=		pdksh-*
 KSH93_CONFLICTS=	ksh93-2* ast-ksh-*
 
 MESON_BUILD_DIR=	build
 
 OPTIONS_DEFAULT=	KSH93
 OPTIONS_SINGLE=		BIN_KSH
 OPTIONS_SINGLE_BIN_KSH=	KSH KSH93
 KSH_DESC=		Install to ${PREFIX}/bin/ksh
 KSH93_DESC=		Install to ${PREFIX}/bin/ksh93
 
 KSH93_EXTRA_PATCHES=	${FILESDIR}/extra-patch-install-as-ksh93
 
 KSH_PLIST_SUB=		93=""
 KSH93_PLIST_SUB=	93="93"
 
 .include <bsd.port.options.mk>
 
 post-patch:
 	@${REINPLACE_CMD} -e '/for name in/ s|python.*|${PYTHON_CMD}|g' ${WRKSRC}/scripts/python.sh
 	@${REINPLACE_CMD} -e 's|SF_FLAGS|SFIO_FLAGS|g' ${WRKSRC}/src/lib/libast/include/sfio*.h ${WRKSRC}/src/lib/libast/sfio/*.c
 .if ${PORT_OPTIONS:MKSH93}
-	@${MV} ${WRKSRC}/src/cmd/ksh93/ksh.1 ${WRKSRC}/src/cmd/ksh93/ksh93.1
+	@${MV} ${WRKSRC}/src/cmd/ksh93/docs/ksh.1 ${WRKSRC}/src/cmd/ksh93/docs/ksh93.1
 .endif
 .if ${PORT_OPTIONS:MKSH}
 	@# Keep portlint happy
 .endif
 
 .include <bsd.port.mk>
Index: head/shells/ksh93-devel/distinfo
===================================================================
--- head/shells/ksh93-devel/distinfo	(revision 510095)
+++ head/shells/ksh93-devel/distinfo	(revision 510096)
@@ -1,3 +1,3 @@
-TIMESTAMP = 1565586115
-SHA256 (att-ast-2019.08.11-5981a47_GH0.tar.gz) = 06dee9b25b8b332431abf32b5a5306d9308aea91deeb40edae9e08e86dbd8dbd
-SIZE (att-ast-2019.08.11-5981a47_GH0.tar.gz) = 2027446
+TIMESTAMP = 1567020562
+SHA256 (att-ast-2019.08.28-251e90c1_GH0.tar.gz) = 637b9dc5498b35b5e98cb5ed42ed16f2c6ebb977f398fd68788bc006684dadfb
+SIZE (att-ast-2019.08.28-251e90c1_GH0.tar.gz) = 2023954
Index: head/shells/ksh93-devel/files/extra-patch-install-as-ksh93
===================================================================
--- head/shells/ksh93-devel/files/extra-patch-install-as-ksh93	(revision 510095)
+++ head/shells/ksh93-devel/files/extra-patch-install-as-ksh93	(revision 510096)
@@ -1,25 +1,25 @@
---- src/cmd/ksh93/meson.build.orig	2019-05-16 22:08:26.000000000 -0700
-+++ src/cmd/ksh93/meson.build	2019-05-21 20:24:32.997423000 -0700
+--- ./src/cmd/ksh93/meson.build.orig	2019-08-25 15:52:12.000000000 -0700
++++ ./src/cmd/ksh93/meson.build	2019-08-28 12:34:47.804820000 -0700
 @@ -26,19 +26,19 @@
                   dependencies: [libm_dep, libexecinfo_dep, libdl_dep, libsocket_dep, libnsl_dep],
-                  install: false)
+                  install: get_option('default_library') == 'shared')
  
 -ksh93_exe = executable('ksh', ['sh/pmain.c'], c_args: shared_c_args,
 +ksh93_exe = executable('ksh93', ['sh/pmain.c'], c_args: shared_c_args,
      include_directories: [configuration_incdir, ksh93_incdir],
      link_with: [libksh, libast, libcmd, libdll],
      dependencies: [libm_dep, libexecinfo_dep, libdl_dep],
      install: true)
  
 -shcomp_exe = executable('shcomp', ['sh/shcomp.c'], c_args: shared_c_args,
 +shcomp_exe = executable('shcomp93', ['sh/shcomp.c'], c_args: shared_c_args,
      include_directories: [configuration_incdir, ksh93_incdir],
      link_with: [libksh, libast, libcmd, libdll],
      dependencies: [libm_dep, libexecinfo_dep, libdl_dep, libsocket_dep, libnsl_dep],
      install: true)
  
--install_man('ksh.1')
-+install_man('ksh93.1')
+-install_man('docs/ksh.1')
++install_man('docs/ksh93.1')
  
  test_dir = join_paths(meson.current_source_dir(), 'tests')
  test_driver = join_paths(test_dir, 'util', 'run_test.sh')