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-rw-r--r--log-tree.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/log-tree.c b/log-tree.c
index f9385b1dae..9f50a81e53 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -899,15 +899,21 @@ static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log
int showed_log;
struct commit_list *parents;
struct object_id *oid;
+ int is_merge;
+ int all_need_diff = opt->diff || opt->diffopt.flags.exit_with_status;
- if (!opt->diff && !opt->diffopt.flags.exit_with_status)
+ if (!all_need_diff && !opt->merges_need_diff)
return 0;
parse_commit_or_die(commit);
oid = get_commit_tree_oid(commit);
- /* Root commit? */
parents = get_saved_parents(opt, commit);
+ is_merge = parents && parents->next;
+ if (!is_merge && !all_need_diff)
+ return 0;
+
+ /* Root commit? */
if (!parents) {
if (opt->show_root_diff) {
diff_root_tree_oid(oid, "", &opt->diffopt);
@@ -916,8 +922,7 @@ static int log_tree_diff(struct rev_info *opt, struct commit *commit, struct log
return !opt->loginfo;
}
- /* More than one parent? */
- if (parents->next) {
+ if (is_merge) {
if (opt->combine_merges)
return do_diff_combined(opt, commit);
if (opt->separate_merges) {