2 files changed, 24 insertions, 4 deletions

diff --git a/share/doc/usd/13.viref/Makefile b/share/doc/usd/13.viref/Makefile
index 49226ba37074..a60e3263f1f4 100644
--- a/share/doc/usd/13.viref/Makefile
+++ b/share/doc/usd/13.viref/Makefile
@@ -2,7 +2,6 @@
 # $FreeBSD$
 
 VOLUME=		usd/13.viref
-SRCS=		vi.ref-patched
 EXTRA=		ex.cmd.roff ref.so set.opt.roff vi.cmd.roff
 MACROS=		-me
 CLEANFILES=	vi.ref-patched index
@@ -15,18 +14,22 @@ vi.ref-patched: vi.ref
 
 PRINTERDEVICE?=	ascii
 .for _dev in ${PRINTERDEVICE}
+SRCS+=		vi.ref-${_dev}
 EXTRA+=		index.so.${_dev}
-CLEANFILES+=	index.so.${_dev}
+CLEANFILES+=	index.so.${_dev} vi.ref-${_dev}
+
+vi.ref-${_dev}: index.so.${_dev}
+	sed -e 's:^\.so index\.so\.\\\*\[\.T\]$$:${_dev}:' vi.ref-patched > ${.TARGET}
 
 # Build index.so as a side-effect of building the paper.
-index.so.${_dev}: ${SRCS} ${EXTRA:Nindex.so.${_dev}}
+index.so.${_dev}: vi.ref-patched ${EXTRA:Nindex.so.${_dev}}
 	sed -e 's:^\.so index\.so\.\\\*\[\.T\]$$::' vi.ref-patched | \
 	    ${ROFF.${_dev}} -U -z
 	sed -e 's/MINUSSIGN/-/' \
 	    -e 's/DOUBLEQUOTE/""/' \
 	    -e "s/SQUOTE/'/" \
 	    -e 's/ /__SPACE/g' < index | \
-	sort -u '-t	' -k 1,1 -k 2n | awk -f ${SRCDIR}/merge.awk | \
+	sort -u '-t	' -k 1,1 -k 2n | awk -f ${.CURDIR}/merge.awk | \
 	sed -e 's/__SPACE/ /g' \
 	    -e "s/^\\(['\\.]\\)/\\\\\&\\1/" > ${.TARGET}
 .endfor
diff --git a/share/doc/usd/13.viref/merge.awk b/share/doc/usd/13.viref/merge.awk
new file mode 100644
index 000000000000..e85f7d3bd88e
--- /dev/null
+++ b/share/doc/usd/13.viref/merge.awk
@@ -0,0 +1,17 @@
+# $FreeBSD$
+#	@(#)merge.awk	8.3 (Berkeley) 5/25/94
+#
+# merge index entries into one line per label
+$1 == prev {
+	printf ", %s", $2;
+	next;
+}
+{
+	if (NR != 1)
+		printf "\n";
+	printf "%s \t%s", $1, $2;
+	prev = $1;
+}
+END {
+	printf "\n"
+}