push: fix "refs/tags/ hierarchy cannot be updated without --force"

diff --git a/remote.c b/remote.c
index 012b52f6fd5aa892894b09bc38109155ad0d6810..d3a1ca233becf76411a4653cee4416ce97ee1217 100644 (file)
--- a/remote.c
+++ b/remote.c
@@ -1279,14 +1279,6 @@ int match_push_refs(struct ref *src, struct ref **dst,
        return 0;
 }
 
-static inline int is_forwardable(struct ref* ref)
-{
-       if (!prefixcmp(ref->name, "refs/tags/"))
-               return 0;
-
-       return 1;
-}
-
 void set_ref_status_for_push(struct ref *remote_refs, int send_mirror,
        int force_update)
 {
@@ -1307,31 +1299,24 @@ void set_ref_status_for_push(struct ref *remote_refs, int send_mirror,
                        continue;
                }
 
-               /* This part determines what can overwrite what.
-                * The rules are:
-                *
-                * (0) you can always use --force or +A:B notation to
-                *     selectively force individual ref pairs.
-                *
-                * (1) if the old thing does not exist, it is OK.
+               /*
+                * Decide whether an individual refspec A:B can be
+                * pushed.  The push will succeed if any of the
+                * following are true:
                 *
-                * (2) if the destination is under refs/tags/ you are
-                *     not allowed to overwrite it; tags are expected
-                *     to be static once created
+                * (1) the remote reference B does not exist
                 *
-                * (3) if you do not have the old thing, you are not allowed
-                *     to overwrite it; you would not know what you are losing
-                *     otherwise.
+                * (2) the remote reference B is being removed (i.e.,
+                *     pushing :B where no source is specified)
                 *
-                * (4) if both new and old are commit-ish, and new is a
-                *     descendant of old, it is OK.
+                * (3) the destination is not under refs/tags/, and
+                *     if the old and new value is a commit, the new
+                *     is a descendant of the old.
                 *
-                * (5) regardless of all of the above, removing :B is
-                *     always allowed.
+                * (4) it is forced using the +A:B notation, or by
+                *     passing the --force argument
                 */
 
-               ref->not_forwardable = !is_forwardable(ref);
-
                ref->update =
                        !ref->deletion &&
                        !is_null_sha1(ref->old_sha1);
@@ -1341,7 +1326,7 @@ void set_ref_status_for_push(struct ref *remote_refs, int send_mirror,
                                !has_sha1_file(ref->old_sha1)
                                  || !ref_newer(ref->new_sha1, ref->old_sha1);
 
-                       if (ref->not_forwardable) {
+                       if (!prefixcmp(ref->name, "refs/tags/")) {
                                ref->requires_force = 1;
                                if (!force_ref_update) {
                                        ref->status = REF_STATUS_REJECT_ALREADY_EXISTS;