Re: option -q not passed from "git commit" to "git gc --auto"

[Junio C Hamano <gitster@pobox.com>]

Pierrick Gaudry <pierrick.gaudry@loria.fr> writes:

> Hello,
>
> It seems that when "git commit" is run with the "-q" option, there are
> still, from time to time, messages that get printed. With the French
> locale the message is:
>   Compression automatique du dépôt en tâche de fond pour optimiser les performances.
>   Voir "git help gc" pour toute information sur le nettoyage manuel.
>
> From what I could guess, this is due to the fact that "git commit" calls
> "git gc --auto", but does not propagate the "-q" option if present.
>
> A similar problem was present some time ago with "git fetch" and was
> solved in the 2-line patch 6fceed3b . I guess that the same should be
> done for "git commit".

Hmph, once our minds are on this, we probably should see how
widespread the issues would be before just "fixing" commit.

$ git grep -e 'gc.*,.*--auto' \*.c
builtin/am.c:	const char *argv_gc_auto[] = {"gc", "--auto", NULL};
builtin/commit.c:	const char *argv_gc_auto[] = {"gc", "--auto", NULL};
builtin/fetch.c:		argv_array_pushl(&argv_gc_auto, "gc", "--auto", NULL);
builtin/merge.c:			const char *argv_gc_auto[] = { "gc", "--auto", NULL };
builtin/rebase.c:	const char *argv_gc_auto[] = { "gc", "--auto", NULL };
builtin/receive-pack.c:				"gc", "--auto", "--quiet", NULL,

It is quite clear that "git am --quiet" will ignore "--quiet" (there
is no room to pass an extra argument to "gc --auto").  "merge" and
"rebase" are in the same boat.

I'd rather not see a fix that mimicks 6fceed3b (fetch: silence
git-gc if --quiet is given, 2014-08-16).  Instead why not introduce
a helper "int run_auto_gc(int quiet)" and use it consistently when
we run the auto-gc?

An illustration to cover these (not even compile tested) to show
what I mean and help anybody get started.

 builtin/am.c     | 3 +--
 builtin/commit.c | 3 +--
 builtin/merge.c  | 3 +--
 builtin/rebase.c | 3 +--
 4 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/builtin/am.c b/builtin/am.c
index e3dfd93c25..955f91f076 100644
--- a/builtin/am.c
+++ b/builtin/am.c
@@ -1691,7 +1691,6 @@ static int do_interactive(struct am_state *state)
  */
 static void am_run(struct am_state *state, int resume)
 {
-	const char *argv_gc_auto[] = {"gc", "--auto", NULL};
 	struct strbuf sb = STRBUF_INIT;
 
 	unlink(am_path(state, "dirtyindex"));
@@ -1796,7 +1795,7 @@ static void am_run(struct am_state *state, int resume)
 	if (!state->rebasing) {
 		am_destroy(state);
 		close_object_store(the_repository->objects);
-		run_command_v_opt(argv_gc_auto, RUN_GIT_CMD);
+		run_gc_auto(state->quiet);
 	}
 }
 
diff --git a/builtin/commit.c b/builtin/commit.c
index a73de0a4c5..15755a52e1 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -1494,7 +1494,6 @@ static int git_commit_config(const char *k, const char *v, void *cb)
 
 int cmd_commit(int argc, const char **argv, const char *prefix)
 {
-	const char *argv_gc_auto[] = {"gc", "--auto", NULL};
 	static struct wt_status s;
 	static struct option builtin_commit_options[] = {
 		OPT__QUIET(&quiet, N_("suppress summary after successful commit")),
@@ -1703,7 +1702,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
 	git_test_write_commit_graph_or_die();
 
 	repo_rerere(the_repository, 0);
-	run_command_v_opt(argv_gc_auto, RUN_GIT_CMD);
+	run_gc_auto(quiet);
 	run_commit_hook(use_editor, get_index_file(), "post-commit", NULL);
 	if (amend && !no_post_rewrite) {
 		commit_post_rewrite(the_repository, current_head, &oid);
diff --git a/builtin/merge.c b/builtin/merge.c
index 923e32acf1..2361e3604a 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -450,7 +450,6 @@ static void finish(struct commit *head_commit,
 		if (verbosity >= 0 && !merge_msg.len)
 			printf(_("No merge message -- not updating HEAD\n"));
 		else {
-			const char *argv_gc_auto[] = { "gc", "--auto", NULL };
 			update_ref(reflog_message.buf, "HEAD", new_head, head,
 				   0, UPDATE_REFS_DIE_ON_ERR);
 			/*
@@ -458,7 +457,7 @@ static void finish(struct commit *head_commit,
 			 * user should see them.
 			 */
 			close_object_store(the_repository->objects);
-			run_command_v_opt(argv_gc_auto, RUN_GIT_CMD);
+			run_gc_auto(verbosity < 0);
 		}
 	}
 	if (new_head && show_diffstat) {
diff --git a/builtin/rebase.c b/builtin/rebase.c
index fb1227de45..2edd2ea596 100644
--- a/builtin/rebase.c
+++ b/builtin/rebase.c
@@ -737,7 +737,6 @@ static int rebase_write_basic_state(struct rebase_options *opts)
 static int finish_rebase(struct rebase_options *opts)
 {
 	struct strbuf dir = STRBUF_INIT;
-	const char *argv_gc_auto[] = { "gc", "--auto", NULL };
 	int ret = 0;
 
 	delete_ref(NULL, "REBASE_HEAD", NULL, REF_NO_DEREF);
@@ -747,7 +746,7 @@ static int finish_rebase(struct rebase_options *opts)
 	 * We ignore errors in 'gc --auto', since the
 	 * user should see them.
 	 */
-	run_command_v_opt(argv_gc_auto, RUN_GIT_CMD);
+	run_auto_gc(!(opts->flags & (REBASE_NO_QUIET|REBASE_VERBOSE)));
 	if (opts->type == REBASE_MERGE) {
 		struct replay_opts replay = REPLAY_OPTS_INIT;