[PATCH v2] rebase -x: don't print "Executing:" msgs with --quiet

[Matheus Tavares <matheus.tavb@xxxxxxxxx>]

`rebase --exec` doesn't obey --quiet and ends up printing a few messages
about the command being executed:

  git rebase HEAD~3 --quiet --exec "printf foo >/dev/null"
  Executing: printf foo >/dev/null
  Executing: printf foo >/dev/null
  Executing: printf foo >/dev/null

Let's fix that.

Reported-by: Lincoln Yuji <lincolnyuji@xxxxxxxxxxx>
Reported-by: Rodrigo Siqueira <siqueirajordao@xxxxxxxxxx>
Signed-off-by: Matheus Tavares <matheus.tavb@xxxxxxxxx>
---
Changes in v2:
- Applied commit message fixes by Patrick.
- Fixed codestyle.
- Added regression test.
- Also checked "!opt->quiet" before calling term_clear_line() (this
  would only print whitspaces, so no direct impact for users, but the
  bytes are still there when the output is captured by scripts, like the
  test script :)
- Added Lincoln as one of the reporters.

 sequencer.c       | 13 +++++++------
 t/t3400-rebase.sh |  7 +++++++
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/sequencer.c b/sequencer.c
index 0291920f0b..79d577e676 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -3793,12 +3793,13 @@ static int error_failed_squash(struct repository *r,
 	return error_with_patch(r, commit, subject, subject_len, opts, 1, 0);
 }
 
-static int do_exec(struct repository *r, const char *command_line)
+static int do_exec(struct repository *r, const char *command_line, int quiet)
 {
 	struct child_process cmd = CHILD_PROCESS_INIT;
 	int dirty, status;
 
-	fprintf(stderr, _("Executing: %s\n"), command_line);
+	if (!quiet)
+		fprintf(stderr, _("Executing: %s\n"), command_line);
 	cmd.use_shell = 1;
 	strvec_push(&cmd.args, command_line);
 	strvec_push(&cmd.env, "GIT_CHERRY_PICK_HELP");
@@ -4902,7 +4903,7 @@ static int pick_one_commit(struct repository *r,
 	if (item->command == TODO_EDIT) {
 		struct commit *commit = item->commit;
 		if (!res) {
-			if (!opts->verbose)
+			if (!opts->quiet && !opts->verbose)
 				term_clear_line();
 			fprintf(stderr, _("Stopped at %s...  %.*s\n"),
 				short_commit_name(r, commit), item->arg_len, arg);
@@ -4994,7 +4995,7 @@ static int pick_commits(struct repository *r,
 					NULL, REF_NO_DEREF);
 
 			if (item->command == TODO_BREAK) {
-				if (!opts->verbose)
+				if (!opts->quiet && !opts->verbose)
 					term_clear_line();
 				return stopped_at_head(r);
 			}
@@ -5010,10 +5011,10 @@ static int pick_commits(struct repository *r,
 			char *end_of_arg = (char *)(arg + item->arg_len);
 			int saved = *end_of_arg;
 
-			if (!opts->verbose)
+			if (!opts->quiet && !opts->verbose)
 				term_clear_line();
 			*end_of_arg = '\0';
-			res = do_exec(r, arg);
+			res = do_exec(r, arg, opts->quiet);
 			*end_of_arg = saved;
 
 			if (res) {
diff --git a/t/t3400-rebase.sh b/t/t3400-rebase.sh
index ae34bfad60..15b3228c6e 100755
--- a/t/t3400-rebase.sh
+++ b/t/t3400-rebase.sh
@@ -235,6 +235,13 @@ test_expect_success 'rebase --merge -q is quiet' '
 	test_must_be_empty output.out
 '
 
+test_expect_success 'rebase --exec -q is quiet' '
+	git checkout -B quiet topic &&
+	git rebase --exec true -q main >output.out 2>&1 &&
+	test_must_be_empty output.out
+	
+'
+
 test_expect_success 'Rebase a commit that sprinkles CRs in' '
 	(
 		echo "One" &&
-- 
2.46.0