Show usage string for 'git show-index -h'
authorJonathan Nieder <jrnieder@gmail.com>
Mon, 9 Nov 2009 15:04:55 +0000 (09:04 -0600)
committerJunio C Hamano <gitster@pobox.com>
Tue, 10 Nov 2009 19:06:57 +0000 (11:06 -0800)
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
show-index.c

index 45bb535773fd9c36f73502df9462f7de800009c8..63f9da53237d4233bede66a28e4bcf27d5b44af1 100644 (file)
@@ -1,6 +1,9 @@
 #include "cache.h"
 #include "pack.h"
 
+static const char show_index_usage[] =
+"git show-index < <packed archive index>";
+
 int main(int argc, char **argv)
 {
        int i;
@@ -8,6 +11,8 @@ int main(int argc, char **argv)
        unsigned int version;
        static unsigned int top_index[256];
 
+       if (argc != 1)
+               usage(show_index_usage);
        if (fread(top_index, 2 * 4, 1, stdin) != 1)
                die("unable to read header");
        if (top_index[0] == htonl(PACK_IDX_SIGNATURE)) {