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-rw-r--r--log-tree.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/log-tree.c b/log-tree.c
index 61a12a7cb0..3cf569ce7e 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -456,6 +456,13 @@ static int which_parent(const unsigned char *sha1, const struct commit *commit)
return -1;
}
+static int is_common_merge(const struct commit *commit)
+{
+ return (commit->parents
+ && commit->parents->next
+ && !commit->parents->next->next);
+}
+
static void show_one_mergetag(struct rev_info *opt,
struct commit_extra_header *extra,
struct commit *commit)
@@ -474,6 +481,11 @@ static void show_one_mergetag(struct rev_info *opt,
strbuf_init(&verify_message, 256);
if (parse_tag_buffer(tag, extra->value, extra->len))
strbuf_addstr(&verify_message, "malformed mergetag\n");
+ else if (is_common_merge(commit) &&
+ !hashcmp(tag->tagged->sha1,
+ commit->parents->next->item->object.sha1))
+ strbuf_addf(&verify_message,
+ "merged tag '%s'\n", tag->tag);
else if ((nth = which_parent(tag->tagged->sha1, commit)) < 0)
strbuf_addf(&verify_message, "tag %s names a non-parent %s\n",
tag->tag, tag->tagged->sha1);