[PATCH v2 13/15] merge: decide if we auto-generate the message early in collect_parents()

[Junio C Hamano]

Signed-off-by: Junio C Hamano <gits...@pobox.com>
---
 builtin/merge.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/builtin/merge.c b/builtin/merge.c
index 9f98538..eb3be68 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -1098,6 +1098,10 @@ static struct commit_list *collect_parents(struct commit 
*head_commit,
        int i;
        struct commit_list *remoteheads = NULL;
        struct commit_list **remotes = &remoteheads;
+       struct strbuf merge_names = STRBUF_INIT, *autogen = NULL;
+
+       if (merge_msg && (!have_message || shortlog_len))
+               autogen = &merge_names;
 
        if (head_commit)
                remotes = &commit_list_insert(head_commit, remotes)->next;
@@ -1111,15 +1115,13 @@ static struct commit_list *collect_parents(struct 
commit *head_commit,
 
        remoteheads = reduce_parents(head_commit, head_subsumed, remoteheads);
 
-       if (merge_msg &&
-           (!have_message || shortlog_len)) {
-               struct strbuf merge_names = STRBUF_INIT;
+       if (autogen) {
                struct commit_list *p;
-
                for (p = remoteheads; p; p = p->next)
-                       merge_name(merge_remote_util(p->item)->name, 
&merge_names);
-               prepare_merge_message(&merge_names, merge_msg);
-               strbuf_release(&merge_names);
+                       merge_name(merge_remote_util(p->item)->name, autogen);
+
+               prepare_merge_message(autogen, merge_msg);
+               strbuf_release(autogen);
        }
 
        return remoteheads;
-- 
2.4.0-rc3-300-g052d062

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