[PATCH 5/8] submodule--helper: show usage for "-h"

[Jeff King <peff@peff.net>]

Normal users shouldn't ever call submodule--helper, but it
doesn't hurt to give them a normal usage message if they try
"-h".

Signed-off-by: Jeff King <peff@peff.net>
---
The usage message isn't that helpful _either_, and I admit
my ulterior motive is just to make the test at the end of
this series pass. :)

I was tempted to actually dump the names from the commands
array to stdout, but this command really is an internal
helper. It's probably not worth spending time on such
niceties.

 builtin/submodule--helper.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index 566a5b6a6..a78b003c2 100644
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -1222,9 +1222,8 @@ static struct cmd_struct commands[] = {
 int cmd_submodule__helper(int argc, const char **argv, const char *prefix)
 {
 	int i;
-	if (argc < 2)
-		die(_("submodule--helper subcommand must be "
-		      "called with a subcommand"));
+	if (argc < 2 || !strcmp(argv[1], "-h"))
+		usage("git submodule--helper <command>");
 
 	for (i = 0; i < ARRAY_SIZE(commands); i++) {
 		if (!strcmp(argv[1], commands[i].cmd)) {
-- 
2.13.0.613.g11c956365