scripts: do not get confused with HEAD in work tree

When you have a file called HEAD in your work tree, many commands that
our scripts feed "HEAD" to would complain about the rev vs path
ambiguity.  A solution is to form command line more carefully by
appending -- to them, which makes it clear that we mean HEAD rev not
HEAD file.

This patch would apply to maint.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/git-stash.sh b/git-stash.sh
index 5bbda47b7b..77c94210b7 100755
--- a/git-stash.sh
+++ b/git-stash.sh
@@ -14,7 +14,7 @@ trap 'rm -f "$TMP-*"' 0
 ref_stash=refs/stash
 
 no_changes () {
-	git diff-index --quiet --cached HEAD &&
+	git diff-index --quiet --cached HEAD -- &&
 	git diff-files --quiet
 }