Index: Mk/Scripts/functions.sh
===================================================================
--- Mk/Scripts/functions.sh
+++ Mk/Scripts/functions.sh
@@ -7,7 +7,8 @@
 _strip_perms() {
 	sed -Ee 's/^@\([^)]*\)[[:space:]]+//' \
 	    -e 's/^(@[[:alpha:]]+)\([^)]*\)[[:space:]]+/\1 /' \
-		-e 's/^@@[[:alnum:]]+@@//'
+		-e 's/^@@[[:alnum:]]+@@//' \
+		-e 's/@@[[:alnum:]]+@@$//'
 }
 
 # Expand TMPPLIST to absolute paths, splitting files and dirs into separate
Index: Mk/bsd.port.mk
===================================================================
--- Mk/bsd.port.mk
+++ Mk/bsd.port.mk
@@ -4592,15 +4592,21 @@
 .      if !empty(_REALLY_ALL_POSSIBLE_OPTIONS:M${_type})
 .        if !target(add-plist-${_type:tl})
 .          if defined(PORT${_type}) && !empty(PORT_OPTIONS:M${_type})
+.            if defined(${_type}_SUBPACKAGES)
+SP_${_type}=	@@${${_type}_SUBPACKAGES}@@
+.            else
+SP_${_type}=
+.            endif
 add-plist-${_type:tl}:
 .            for x in ${PORT${_type}}
 	@if ${ECHO_CMD} "${x}"| ${AWK} '$$1 ~ /(\*|\||\[|\]|\?|\{|\}|\$$)/ { exit 1};'; then \
 		if [ ! -e ${STAGEDIR}${${_type}DIR}/${x} ]; then \
-		${ECHO_CMD} ${${_type}DIR}/${x} >> ${TMPPLIST}; \
-	fi;fi
+			${ECHO_CMD} ${SP_${_type}}${${_type}DIR}/${x} >> ${TMPPLIST}; \
+		fi \
+	fi
 .            endfor
 	@${FIND} -P ${PORT${_type}:S/^/${STAGEDIR}${${_type}DIR}\//} ! -type d 2>/dev/null | \
-		${SED} -ne 's,^${STAGEDIR},,p' >> ${TMPPLIST}
+		${SED} -ne 's,^${STAGEDIR},${SP_${_type}},p' >> ${TMPPLIST}
 .          endif
 .        endif
 .      endif
Index: ports-mgmt/Makefile
===================================================================
--- ports-mgmt/Makefile
+++ ports-mgmt/Makefile
@@ -77,6 +77,8 @@
     SUBDIR += reprise
     SUBDIR += sccache-overlay
     SUBDIR += submodules2tuple
+    SUBDIR += subpkgtest
+    SUBDIR += subpkgtest2
     SUBDIR += synth
     SUBDIR += wanted-ports
 
Index: ports-mgmt/subpkgtest/Makefile
===================================================================
--- /dev/null
+++ ports-mgmt/subpkgtest/Makefile
@@ -0,0 +1,49 @@
+PORTNAME=	port-test
+PORTVERSION=	0.0.2
+DISTVERSIONPREFIX=	v
+CATEGORIES=	ports-mgmt
+
+MAINTAINER=	pizzamig@FreeBSD.org
+COMMENT=	Small C project to be used as test
+WWW=		https://github.com/pizzamig/port-test
+
+LICENSE=	BSD3CLAUSE
+LICENSE_FILE=	${WRKSRC}/LICENSE
+
+USE_GITHUB=	yes
+GH_ACCOUNT=	pizzamig
+
+OPTIONS_DEFINE=	DATA DOCS EXAMPLES
+OPTIONS_SUB=	yes
+OPTIONS_DEFAULT=	DATA
+
+DATA_DESC=	Install additional data files
+
+SUBPACKAGES=	cmd2
+SELF_DEPENDS.cmd2=	main
+
+DATA_SUBPACKAGES=	data1 data2
+DOCS_SUBPACKAGES=	docs
+EXAMPLES_SUBPACKAGES=	examples
+
+PORTDOCS=	README.md
+PORTEXAMPLES=	EXAMPLES.md
+
+do-install:
+	${INSTALL_PROGRAM} ${WRKSRC}/cmd1 ${STAGEDIR}${PREFIX}/bin
+	${INSTALL_PROGRAM} ${WRKSRC}/cmd2 ${STAGEDIR}${PREFIX}/bin
+
+post-install-DATA-on:
+	${MKDIR} ${STAGEDIR}${DATADIR}
+	${INSTALL_DATA} ${WRKSRC}/data1.txt ${STAGEDIR}${DATADIR}
+	${INSTALL_DATA} ${WRKSRC}/data2.txt ${STAGEDIR}${DATADIR}
+
+post-install-DOCS-on:
+	${MKDIR} ${STAGEDIR}${DOCSDIR}
+	${INSTALL_DATA} ${WRKSRC}/README.md ${STAGEDIR}${DOCSDIR}
+
+post-install-EXAMPLES-on:
+	${MKDIR} ${STAGEDIR}${EXAMPLESDIR}
+	${INSTALL_DATA} ${WRKSRC}/EXAMPLES.md ${STAGEDIR}${EXAMPLESDIR}
+
+.include <bsd.port.mk>
Index: ports-mgmt/subpkgtest/distinfo
===================================================================
--- /dev/null
+++ ports-mgmt/subpkgtest/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1686490183
+SHA256 (pizzamig-port-test-v0.0.2_GH0.tar.gz) = 3845e74e7963712d22bd8219b91914fc217e59bf63e180ccfc7f2aaaf1f2c569
+SIZE (pizzamig-port-test-v0.0.2_GH0.tar.gz) = 2203
Index: ports-mgmt/subpkgtest/pkg-descr
===================================================================
--- /dev/null
+++ ports-mgmt/subpkgtest/pkg-descr
@@ -0,0 +1,2 @@
+port-test is just a test.
+The code is only a bunch of hello worlds written in C
Index: ports-mgmt/subpkgtest/pkg-descr.cmd2
===================================================================
--- /dev/null
+++ ports-mgmt/subpkgtest/pkg-descr.cmd2
@@ -0,0 +1,2 @@
+port-test-cmd2 only contains cmd2
+The code is only a hello world written in C echoing 'cmd2'
Index: ports-mgmt/subpkgtest/pkg-descr.data1
===================================================================
--- /dev/null
+++ ports-mgmt/subpkgtest/pkg-descr.data1
@@ -0,0 +1 @@
+port-test-data1 only contains data1.txt file
Index: ports-mgmt/subpkgtest/pkg-descr.data2
===================================================================
--- /dev/null
+++ ports-mgmt/subpkgtest/pkg-descr.data2
@@ -0,0 +1 @@
+port-test-data2 only contains data2.txt file
Index: ports-mgmt/subpkgtest/pkg-descr.docs
===================================================================
--- /dev/null
+++ ports-mgmt/subpkgtest/pkg-descr.docs
@@ -0,0 +1 @@
+port-test-docs only contains documentation
Index: ports-mgmt/subpkgtest/pkg-descr.examples
===================================================================
--- /dev/null
+++ ports-mgmt/subpkgtest/pkg-descr.examples
@@ -0,0 +1 @@
+port-test-examples only contains examples
Index: ports-mgmt/subpkgtest/pkg-plist
===================================================================
--- /dev/null
+++ ports-mgmt/subpkgtest/pkg-plist
@@ -0,0 +1,4 @@
+bin/cmd1
+@@cmd2@@bin/cmd2
+@@data1@@%%DATA%%%%DATADIR%%/data1.txt
+@@data2@@%%DATA%%%%DATADIR%%/data2.txt
Index: ports-mgmt/subpkgtest2/Makefile
===================================================================
--- /dev/null
+++ ports-mgmt/subpkgtest2/Makefile
@@ -0,0 +1,31 @@
+PORTNAME=	port-test2
+PORTVERSION=	0.0.1
+CATEGORIES=	ports-mgmt
+MASTER_SITES=
+DISTFILES=
+EXTRACT_ONLY=
+
+MAINTAINER=	pizzamig@FreeBSD.org
+COMMENT=	Meta port to test dependency of sub-packages
+WWW=	https://asdf.asdf.de
+
+LICENSE=	NONE
+NO_ARCH=	yes
+NO_BUILD=	yes
+
+OPTIONS_DEFINE=	DATA DOCS
+OPTIONS_DEFAULT= DOCS
+
+RUN_DEPENDS=	${LOCALBASE}/bin/cmd1:ports-mgmt/subpkgtest \
+				port-test-cmd2>=0.0.2:ports-mgmt/subpkgtest~cmd2
+PLIST_FILES=	link-cmd1 \
+				link-cmd2
+
+DATA_RUN_DEPENDS=	${LOCALBASE}/share/port-test/data1.txt:ports-mgmt/subpkgtest
+DOCS_RUN_DEPENDS=	${LOCALBASE}/share/doc/port-test/README.md:ports-mgmt/subpkgtest
+
+do-install:
+	${LN} -sf link-cmd1 ${STAGEDIR}${PREFIX}/bin/cmd1
+	${LN} -sf link-cmd2 ${STAGEDIR}${PREFIX}/bin/cmd2
+
+.include <bsd.port.mk>
Index: ports-mgmt/subpkgtest2/pkg-descr
===================================================================
--- /dev/null
+++ ports-mgmt/subpkgtest2/pkg-descr
@@ -0,0 +1,2 @@
+subpkgtest2 is just a test.
+It's an empty package to test dependencies on tests