merge: record tag objects without peeling in MERGE_HEAD

Otherwise, "git commit" wouldn't have a way to tell that we were in the
middle of merging an annotated or signed tag, not a plain commit, after
"git merge" stops to ask the user to resolve conflicts.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/merge.c b/builtin/merge.c
index 8d4eb4e423a2513e7b537416ab397a543b17e6b3..7158e8e2d2e24145ffa77233a2e1071fa445a025 100644 (file)
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -1045,9 +1045,16 @@ static void write_merge_state(void)
        struct commit_list *j;
        struct strbuf buf = STRBUF_INIT;
 
-       for (j = remoteheads; j; j = j->next)
-               strbuf_addf(&buf, "%s\n",
-                       sha1_to_hex(j->item->object.sha1));
+       for (j = remoteheads; j; j = j->next) {
+               unsigned const char *sha1;
+               struct commit *c = j->item;
+               if (c->util && merge_remote_util(c)->obj) {
+                       sha1 = merge_remote_util(c)->obj->sha1;
+               } else {
+                       sha1 = c->object.sha1;
+               }
+               strbuf_addf(&buf, "%s\n", sha1_to_hex(sha1));
+       }
        fd = open(git_path("MERGE_HEAD"), O_WRONLY | O_CREAT, 0666);
        if (fd < 0)
                die_errno(_("Could not open '%s' for writing"),

diff --git a/t/t7600-merge.sh b/t/t7600-merge.sh
index b91d022bc6f1886ead6780387da5a871c2e359ec..5d8c428543bd61a27489af72045b4e1816d240e9 100755 (executable)
--- a/t/t7600-merge.sh
+++ b/t/t7600-merge.sh
@@ -96,7 +96,11 @@ verify_parents () {
 
 verify_mergeheads () {
        printf '%s\n' "$@" >mergehead.expected &&
-       test_cmp mergehead.expected .git/MERGE_HEAD
+       while read sha1 rest
+       do
+               git rev-parse $sha1
+       done <.git/MERGE_HEAD >mergehead.actual &&
+       test_cmp mergehead.expected mergehead.actual
 }
 
 verify_no_mergehead () {