commit: skip discarding the index if there is no pre-commit hook
If there is not a pre-commit hook, there is no reason to discard
the index and reread it.
This change checks to presence of a pre-commit hook and then only
discards the index if there was one.
Signed-off-by: Kevin Willford <kewillf@microsoft.com>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin/commit.c b/builtin/commit.c
index 2de5f6c..6448ef4 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -943,13 +943,16 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
return 0;
}
- /*
- * Re-read the index as pre-commit hook could have updated it,
- * and write it out as a tree. We must do this before we invoke
- * the editor and after we invoke run_status above.
- */
- discard_cache();
+ if (!no_verify && find_hook("pre-commit")) {
+ /*
+ * Re-read the index as pre-commit hook could have updated it,
+ * and write it out as a tree. We must do this before we invoke
+ * the editor and after we invoke run_status above.
+ */
+ discard_cache();
+ }
read_cache_from(index_file);
+
if (update_main_cache_tree(0)) {
error(_("Error building trees"));
return 0;
