[PATCH 2/4] contrib/subtree: Allow stale .gitsubtree entries to be replaced

Should .gitsubtree have a <prefix> listed that doesn't exist on disk, allow
it to be replaced/updated by a git subtree add.

Ideally I would have aborted the operation if there was an existing entry
and required the user to edit the .gitsubtree file by hand, but that
behaviour broke a lot of the tests.

Signed-off-by: Paul Campbell <redacted>
---
 contrib/subtree/git-subtree.sh | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/contrib/subtree/git-subtree.sh b/contrib/subtree/git-subtree.sh
index 02aae30..4f21902 100755
--- a/contrib/subtree/git-subtree.sh
+++ b/contrib/subtree/git-subtree.sh

@@ -490,7 +490,13 @@ ensure_clean()

 subtree_memorize()
 {
-	if [ $# -eq 1 ] ; then
+	if ( grep "^$dir " .gitsubtree ); then
+		# remove $dir from .gitsubtree - there's probably a clever way to

do this with sed
+		grep -v "^$dir " .gitsubtree > .gitsubtree.temp
+		rm .gitsubtree
+		mv .gitsubtree.temp .gitsubtree
+	fi
+	if [ $# -eq 1 ]; then
 		echo "$dir . $@" >> .gitsubtree
 	elif [ $# -eq 2 ]; then
 		echo "$dir $@" >> .gitsubtree
-- 
1.8.1.3.566.gaa39828