merge: extract prepare_merge_message() logic out

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

diff --git a/builtin/merge.c b/builtin/merge.c
index d853c9d80517540f24200e1bb57c67b600a849c9..a972ed6422f3de693f217ef7169ced924fd19402 100644 (file)
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -1076,6 +1076,20 @@ static struct commit_list *reduce_parents(struct commit *head_commit,
        return remoteheads;
 }
 
+static void prepare_merge_message(struct strbuf *merge_names, struct strbuf *merge_msg)
+{
+       struct fmt_merge_msg_opts opts;
+
+       memset(&opts, 0, sizeof(opts));
+       opts.add_title = !have_message;
+       opts.shortlog_len = shortlog_len;
+       opts.credit_people = (0 < option_edit);
+
+       fmt_merge_msg(merge_names, merge_msg, &opts);
+       if (merge_msg->len)
+               strbuf_setlen(merge_msg, merge_msg->len - 1);
+}
+
 static struct commit_list *collect_parents(struct commit *head_commit,
                                           int *head_subsumed,
                                           int argc, const char **argv)
@@ -1248,20 +1262,10 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
 
                if (!have_message || shortlog_len) {
                        struct strbuf merge_names = STRBUF_INIT;
-                       struct fmt_merge_msg_opts opts;
 
                        for (p = remoteheads; p; p = p->next)
                                merge_name(merge_remote_util(p->item)->name, &merge_names);
-
-                       memset(&opts, 0, sizeof(opts));
-                       opts.add_title = !have_message;
-                       opts.shortlog_len = shortlog_len;
-                       opts.credit_people = (0 < option_edit);
-
-                       fmt_merge_msg(&merge_names, &merge_msg, &opts);
-                       if (merge_msg.len)
-                               strbuf_setlen(&merge_msg, merge_msg.len - 1);
-
+                       prepare_merge_message(&merge_names, &merge_msg);
                        strbuf_release(&merge_names);
                }
        }