Improved error message from git-rebase

diff --git a/refs.c b/refs.c
index 12e46b8bbefb35e5d402b3c8ef20dd9e4263e81a..3db444cad2b24a1b44ff8a2dae1aa6818b61cbea 100644 (file)
--- a/refs.c
+++ b/refs.c
@@ -710,6 +710,8 @@ struct ref_lock *lock_ref_sha1(const char *ref, const unsigned char *old_sha1)
 
 struct ref_lock *lock_any_ref_for_update(const char *ref, const unsigned char *old_sha1)
 {
+       if (check_ref_format(ref) == -1)
+               return NULL;
        return lock_ref_sha1_basic(ref, old_sha1, NULL);
 }