Split GPG interface into its own helper library

diff --git a/builtin/fmt-merge-msg.c b/builtin/fmt-merge-msg.c
index 75816329d6153c35e0763b35f70cfaf165f2a4b8..7e2f22589dcb14d5ba95ce1331ef816a458533d0 100644 (file)
--- a/builtin/fmt-merge-msg.c
+++ b/builtin/fmt-merge-msg.c
@@ -293,7 +293,7 @@ static int do_fmt_merge_msg(int merge_title, struct strbuf *in,
                struct commit *head;
                struct rev_info rev;
 
-               head = lookup_commit(head_sha1);
+               head = lookup_commit_or_die(head_sha1, "HEAD");
                init_revisions(&rev, NULL);
                rev.commit_format = CMIT_FMT_ONELINE;
                rev.ignore_merges = 1;