allow deepening of a shallow repository

diff --git a/commit.c b/commit.c
index bffa278868f13b8ba3ba72d45c3dee9eb813fca8..d5103cd3c6358bea2acc8040dfb6eb3afd273420 100644 (file)
--- a/commit.c
+++ b/commit.c
@@ -255,6 +255,19 @@ int write_shallow_commits(int fd, int use_pack_protocol)
        return count;
 }
 
+int unregister_shallow(const unsigned char *sha1)
+{
+       int pos = commit_graft_pos(sha1);
+       if (pos < 0)
+               return -1;
+       if (pos + 1 < commit_graft_nr)
+               memcpy(commit_graft + pos, commit_graft + pos + 1,
+                               sizeof(struct commit_graft *)
+                               * (commit_graft_nr - pos - 1));
+       commit_graft_nr--;
+       return 0;
+}
+
 int parse_commit_buffer(struct commit *item, void *buffer, unsigned long size)
 {
        char *tail = buffer;