Merge branch 'ma/maintenance-crontab-fix'

Hotfix for a topic of this cycle.

* ma/maintenance-crontab-fix:
  t7900-maintenance: test for magic markers
  gc: fix handling of crontab magic markers
  git-maintenance.txt: add missing word

Documentation/git-maintenance.txt

@@ -101,7 +101,7 @@ This is done to avoid disrupting the remote-tracking branches. The end users
 expect these refs to stay unmoved unless they initiate a fetch.  With prefetch
 task, however, the objects necessary to complete a later real fetch would
 already be obtained, so the real fetch would go faster.  In the ideal case,
-it will just become an update to bunch of remote-tracking branches without
+it will just become an update to a bunch of remote-tracking branches without
 any object transfer.
 
 gc::

builtin/gc.c

@@ -1554,11 +1554,10 @@ static int update_background_schedule(int run_maintenance)
 	while (!strbuf_getline_lf(&line, cron_list)) {
 		if (!in_old_region && !strcmp(line.buf, BEGIN_LINE))
 			in_old_region = 1;
-		if (in_old_region)
-			continue;
-		fprintf(cron_in, "%s\n", line.buf);
-		if (in_old_region && !strcmp(line.buf, END_LINE))
+		else if (in_old_region && !strcmp(line.buf, END_LINE))
 			in_old_region = 0;
+		else if (!in_old_region)
+			fprintf(cron_in, "%s\n", line.buf);
 	}
 
 	if (run_maintenance) {

t/t7900-maintenance.sh

@@ -446,6 +446,22 @@ test_expect_success 'start preserves existing schedule' '
 	grep "Important information!" cron.txt
 '
 
+test_expect_success 'magic markers are correct' '
+	grep "GIT MAINTENANCE SCHEDULE" cron.txt >actual &&
+	cat >expect <<-\EOF &&
+	# BEGIN GIT MAINTENANCE SCHEDULE
+	# END GIT MAINTENANCE SCHEDULE
+	EOF
+	test_cmp actual expect
+'
+
+test_expect_success 'stop preserves surrounding schedule' '
+	echo "Crucial information!" >>cron.txt &&
+	GIT_TEST_CRONTAB="test-tool crontab cron.txt" git maintenance stop &&
+	grep "Important information!" cron.txt &&
+	grep "Crucial information!" cron.txt
+'
+
 test_expect_success 'register preserves existing strategy' '
 	git config maintenance.strategy none &&
 	git maintenance register &&