[PATCH v2 02/18] maintenance: add --quiet option

["Derrick Stolee via GitGitGadget" <gitgitgadget@xxxxxxxxx>]

From: Derrick Stolee <dstolee@xxxxxxxxxxxxx>

Maintenance activities are commonly used as steps in larger scripts.
Providing a '--quiet' option allows those scripts to be less noisy when
run on a terminal window. Turn this mode on by default when stderr is
not a terminal.

Pipe the option to the 'git gc' child process.

Signed-off-by: Derrick Stolee <dstolee@xxxxxxxxxxxxx>
---
 Documentation/git-maintenance.txt | 3 +++
 builtin/gc.c                      | 7 +++++++
 t/t7900-maintenance.sh            | 8 +++++---
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/Documentation/git-maintenance.txt b/Documentation/git-maintenance.txt
index 34cd2b4417..089fa4cedc 100644
--- a/Documentation/git-maintenance.txt
+++ b/Documentation/git-maintenance.txt
@@ -52,6 +52,9 @@ OPTIONS
 	in the `gc.auto` config setting, or when the number of pack-files
 	exceeds the `gc.autoPackLimit` config setting.
 
+--quiet::
+	Do not report progress or other information over `stderr`.
+
 GIT
 ---
 Part of the linkgit:git[1] suite
diff --git a/builtin/gc.c b/builtin/gc.c
index 8d73c77f3a..c8cde28436 100644
--- a/builtin/gc.c
+++ b/builtin/gc.c
@@ -707,6 +707,7 @@ static const char * const builtin_maintenance_usage[] = {
 
 static struct maintenance_opts {
 	int auto_flag;
+	int quiet;
 } opts;
 
 static int maintenance_task_gc(void)
@@ -718,6 +719,8 @@ static int maintenance_task_gc(void)
 
 	if (opts.auto_flag)
 		argv_array_pushl(&cmd, "--auto", NULL);
+	if (opts.quiet)
+		argv_array_pushl(&cmd, "--quiet", NULL);
 
 	close_object_store(the_repository->objects);
 	result = run_command_v_opt(cmd.argv, RUN_GIT_CMD);
@@ -736,6 +739,8 @@ int cmd_maintenance(int argc, const char **argv, const char *prefix)
 	static struct option builtin_maintenance_options[] = {
 		OPT_BOOL(0, "auto", &opts.auto_flag,
 			 N_("run tasks based on the state of the repository")),
+		OPT_BOOL(0, "quiet", &opts.quiet,
+			 N_("do not report progress or other information over stderr")),
 		OPT_END()
 	};
 
@@ -745,6 +750,8 @@ int cmd_maintenance(int argc, const char **argv, const char *prefix)
 		usage_with_options(builtin_maintenance_usage,
 				   builtin_maintenance_options);
 
+	opts.quiet = !isatty(2);
+
 	argc = parse_options(argc, argv, prefix,
 			     builtin_maintenance_options,
 			     builtin_maintenance_usage,
diff --git a/t/t7900-maintenance.sh b/t/t7900-maintenance.sh
index d00641c4dd..e4e4036e50 100755
--- a/t/t7900-maintenance.sh
+++ b/t/t7900-maintenance.sh
@@ -12,11 +12,13 @@ test_expect_success 'help text' '
 	test_i18ngrep "usage: git maintenance run" err
 '
 
-test_expect_success 'gc [--auto]' '
-	GIT_TRACE2_EVENT="$(pwd)/run-no-auto.txt" git maintenance run &&
+test_expect_success 'gc [--auto|--quiet]' '
+	GIT_TRACE2_EVENT="$(pwd)/run-no-auto.txt" git maintenance run --no-quiet &&
 	GIT_TRACE2_EVENT="$(pwd)/run-auto.txt" git maintenance run --auto &&
+	GIT_TRACE2_EVENT="$(pwd)/run-quiet.txt" git maintenance run --quiet &&
 	grep ",\"gc\"]" run-no-auto.txt  &&
-	grep ",\"gc\",\"--auto\"]" run-auto.txt
+	grep ",\"gc\",\"--auto\"" run-auto.txt &&
+	grep ",\"gc\",\"--quiet\"" run-quiet.txt
 '
 
 test_done
-- 
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