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-rw-r--r--commit.c20
-rw-r--r--commit.h1
2 files changed, 20 insertions, 1 deletions
diff --git a/commit.c b/commit.c
index 711f674c18..4d00b0a1d6 100644
--- a/commit.c
+++ b/commit.c
@@ -640,6 +640,24 @@ static int compare_commits_by_author_date(const void *a_, const void *b_,
return 0;
}
+int compare_commits_by_gen_then_commit_date(const void *a_, const void *b_, void *unused)
+{
+ const struct commit *a = a_, *b = b_;
+
+ /* newer commits first */
+ if (a->generation < b->generation)
+ return 1;
+ else if (a->generation > b->generation)
+ return -1;
+
+ /* use date as a heuristic when generations are equal */
+ if (a->date < b->date)
+ return 1;
+ else if (a->date > b->date)
+ return -1;
+ return 0;
+}
+
int compare_commits_by_commit_date(const void *a_, const void *b_, void *unused)
{
const struct commit *a = a_, *b = b_;
@@ -789,7 +807,7 @@ static int queue_has_nonstale(struct prio_queue *queue)
/* all input commits in one and twos[] must have been parsed! */
static struct commit_list *paint_down_to_common(struct commit *one, int n, struct commit **twos)
{
- struct prio_queue queue = { compare_commits_by_commit_date };
+ struct prio_queue queue = { compare_commits_by_gen_then_commit_date };
struct commit_list *result = NULL;
int i;
diff --git a/commit.h b/commit.h
index aac3b8c56f..64436ff44e 100644
--- a/commit.h
+++ b/commit.h
@@ -341,6 +341,7 @@ extern int remove_signature(struct strbuf *buf);
extern int check_commit_signature(const struct commit *commit, struct signature_check *sigc);
int compare_commits_by_commit_date(const void *a_, const void *b_, void *unused);
+int compare_commits_by_gen_then_commit_date(const void *a_, const void *b_, void *unused);
LAST_ARG_MUST_BE_NULL
extern int run_commit_hook(int editor_is_used, const char *index_file, const char *name, ...);