Fix send-pack for non-commitish tags.
Again I left the v2.6.11-tree tag behind. My bad.
This commit makes sure that we do not barf when pushing a ref
that is a non-commitish tag. You can update a remote ref under
the following conditions:
* You can always use --force.
* Creating a brand new ref is OK.
* If the remote ref is exactly the same as what you are
pushing, it is OK (nothing is pushed).
* You can replace a commitish with another commitish which is a
descendant of it, if you can verify the ancestry between them;
this and the above means you have to have what you are replacing.
* Otherwise you cannot update; you need to use --force.
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/tag.c b/tag.c
index 2b25fc0..b1ab75f 100644
--- a/tag.c
+++ b/tag.c
@@ -3,6 +3,13 @@
const char *tag_type = "tag";
+struct object *deref_tag(struct object *o)
+{
+ while (o && o->type == tag_type)
+ o = parse_object(((struct tag *)o)->tagged->sha1);
+ return o;
+}
+
struct tag *lookup_tag(const unsigned char *sha1)
{
struct object *obj = lookup_object(sha1);
