[PATCH 2/9] test-mergesort: add sort subcommand

["René Scharfe" <l.s.r@web.de>]

Give the code for sorting a text file its own sub-command.  This allows
extending the helper, which we'll do in the following patches.

Signed-off-by: René Scharfe <l.s.r@web.de>
---
 t/helper/test-mergesort.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/t/helper/test-mergesort.c b/t/helper/test-mergesort.c
index 621e2a5197..05be0d067a 100644
--- a/t/helper/test-mergesort.c
+++ b/t/helper/test-mergesort.c
@@ -23,7 +23,7 @@ static int compare_strings(const void *a, const void *b)
 	return strcmp(x->text, y->text);
 }

-int cmd__mergesort(int argc, const char **argv)
+static int sort_stdin(void)
 {
 	struct line *line, *p = NULL, *lines = NULL;
 	struct strbuf sb = STRBUF_INIT;
@@ -49,3 +49,10 @@ int cmd__mergesort(int argc, const char **argv)
 	}
 	return 0;
 }
+
+int cmd__mergesort(int argc, const char **argv)
+{
+	if (argc == 2 && !strcmp(argv[1], "sort"))
+		return sort_stdin();
+	usage("test-tool mergesort sort");
+}
--
2.33.0