Merge branch 'jh/update-ref-d-through-symref'

"update-ref -d --deref SYM" to delete a ref through a symbolic ref
that points to it did not remove it correctly.

* jh/update-ref-d-through-symref:
  Fix failure to delete a packed ref through a symref
  t1400-update-ref: Add test verifying bug with symrefs in delete_ref()

Author: gitster

refs.c

@@ -1779,7 +1779,7 @@ int delete_ref(const char *refname, const unsigned char *sha1, int delopt)
 	 * packed one.  Also, if it was not loose we need to repack
 	 * without it.
 	 */
-	ret |= repack_without_ref(refname);
+	ret |= repack_without_ref(lock->ref_name);
 
 	unlink_or_warn(git_path("logs/%s", lock->ref_name));
 	invalidate_ref_cache(NULL);

t/t1400-update-ref.sh

@@ -74,6 +74,24 @@ test_expect_success "delete $m (by HEAD)" '
 '
 rm -f .git/$m
 
+test_expect_success \
+	"create $m (by HEAD)" \
+	"git update-ref HEAD $A &&
+	 test $A"' = $(cat .git/'"$m"')'
+test_expect_success \
+	"pack refs" \
+	"git pack-refs --all"
+test_expect_success \
+	"move $m (by HEAD)" \
+	"git update-ref HEAD $B $A &&
+	 test $B"' = $(cat .git/'"$m"')'
+test_expect_success "delete $m (by HEAD) should remove both packed and loose $m" '
+	git update-ref -d HEAD $B &&
+	! grep "$m" .git/packed-refs &&
+	! test -f .git/$m
+'
+rm -f .git/$m
+
 cp -f .git/HEAD .git/HEAD.orig
 test_expect_success "delete symref without dereference" '
 	git update-ref --no-deref -d HEAD &&