[PATCH] checkout-cache: add usage string.

This adds the usage string to checkout-cache and you can say
"--help" to get it.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/checkout-cache.c b/checkout-cache.c
index 82ddbe412ab6c0b374982fed5cdf8fb41c352770..d6c4ff104259789d1e0ed812a0d90394e3c332dd 100644 (file)
--- a/checkout-cache.c
+++ b/checkout-cache.c
@@ -75,6 +75,9 @@ static int checkout_all(void)
        return 0;
 }
 
+static const char *checkout_cache_usage =
+"git-checkout-cache [-u] [-q] [-a] [-f] [-n] [--prefix=<string>] [--] <file>...";
+
 int main(int argc, char **argv)
 {
        int i, force_filename = 0;
@@ -123,6 +126,8 @@ int main(int argc, char **argv)
                                state.base_dir_len = strlen(state.base_dir);
                                continue;
                        }
+                       if (arg[0] == '-')
+                               usage(checkout_cache_usage);
                }
                if (state.base_dir_len) {
                        /* when --prefix is specified we do not