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From: Brooks Davis <brooks@FreeBSD.org>
Date: Fri, 22 Nov 2013 00:06:11 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r258456 - head/usr.sbin/mergemaster
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Author: brooks
Date: Fri Nov 22 00:06:11 2013
New Revision: 258456
URL: http://svnweb.freebsd.org/changeset/base/258456

Log:
  Fix mergemaster -U by forcing FreeBSD 9 compatiblity in mtree when mtree is
  nmtree.
  
  The mtree output used by mergemaster in this case was clearly not meant for
  computer consumption and an approach based on -f <file1> -f <file2> would
  probalby be a better idea, but this is a minimal change.
  
  MFC after:	3 days
  X-MFC-with:	r258437

Modified:
  head/usr.sbin/mergemaster/mergemaster.sh

Modified: head/usr.sbin/mergemaster/mergemaster.sh
==============================================================================
--- head/usr.sbin/mergemaster/mergemaster.sh	Thu Nov 21 23:09:07 2013	(r258455)
+++ head/usr.sbin/mergemaster/mergemaster.sh	Fri Nov 22 00:06:11 2013	(r258456)
@@ -492,8 +492,14 @@ MM_MAKE="make ${ARCHSTRING} -m ${SOURCED
 # files the user changed from the reference files.
 #
 if [ -n "${AUTO_UPGRADE}" -a -s "${MTREEFILE}" ]; then
+	# Force FreeBSD 9 compatible output when available.
+	if mtree -F freebsd9 -c -p /var/empty/ > /dev/null 2>&1; then
+		MTREE_FLAVOR="-F freebsd9"
+	else
+		MTREE_FLAVOR=
+	fi
 	CHANGED=:
-	for file in `mtree -eqL -f ${MTREEFILE} -p ${DESTDIR}/ \
+	for file in `mtree -eqL ${MTREE_FLAVOR} -f ${MTREEFILE} -p ${DESTDIR}/ \
 		2>/dev/null | awk '($2 == "changed") {print $1}'`; do
 		if [ -f "${DESTDIR}/$file" ]; then
 			CHANGED="${CHANGED}${DESTDIR}/${file}:"