[PATCH] Bisect reset: remove bisect refs that may have been packed.

[Christian Couder <chriscool@tuxfamily.org>]

If refs were ever packed in the middle of bisection, the bisect
refs were not removed from the "packed-refs" file.

This patch fixes this problem by using "git update-ref -d $ref $hash"
in "bisect_clean_state".

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
 git-bisect.sh               |   11 ++++++++++-
 t/t6030-bisect-porcelain.sh |   12 ++++++++++++
 2 files changed, 22 insertions(+), 1 deletions(-)

diff --git a/git-bisect.sh b/git-bisect.sh
index 3aac816..73a4da2 100755
--- a/git-bisect.sh
+++ b/git-bisect.sh
@@ -352,7 +352,16 @@ bisect_reset() {
 
 bisect_clean_state() {
 	rm -fr "$GIT_DIR/refs/bisect"
-	rm -f "$GIT_DIR/refs/heads/bisect"
+
+	# There may be some refs packed during bisection.
+	git for-each-ref --format='%(refname) %(objectname)' \
+		"refs/bisect/*" | while read ref hash
+	do
+		git update-ref -d $ref $hash
+	done
+
+	hash=$(git show-ref --hash refs/heads/bisect)
+	git update-ref -d refs/heads/bisect $hash
 	rm -f "$GIT_DIR/BISECT_LOG"
 	rm -f "$GIT_DIR/BISECT_NAMES"
 	rm -f "$GIT_DIR/BISECT_RUN"
diff --git a/t/t6030-bisect-porcelain.sh b/t/t6030-bisect-porcelain.sh
index 53956c0..f09db62 100755
--- a/t/t6030-bisect-porcelain.sh
+++ b/t/t6030-bisect-porcelain.sh
@@ -71,6 +71,18 @@ test_expect_success 'bisect start with one bad and good' '
 	git bisect next
 '
 
+test_expect_success 'bisect reset removes packed refs' '
+	git bisect reset &&
+	git bisect start &&
+	git bisect good $HASH1 &&
+	git bisect bad $HASH3 &&
+	git pack-refs --all --prune &&
+	git bisect next &&
+	git bisect reset &&
+	test -z "$(git for-each-ref "refs/bisect/*")" &&
+	test -z "$(git for-each-ref "refs/heads/bisect")"
+'
+
 # $HASH1 is good, $HASH4 is bad, we skip $HASH3
 # but $HASH2 is bad,
 # so we should find $HASH2 as the first bad commit
-- 
1.5.3.5.1728.g34b3e-dirty