Introduce usagef() that takes a printf-style format

diff --git a/builtin-merge-file.c b/builtin-merge-file.c
index 96edb97a8327ba64cccf64bfa341e94d9f903e94..afd2ea7a732460c431328dbd4c0141a49d638244 100644 (file)
--- a/builtin-merge-file.c
+++ b/builtin-merge-file.c
@@ -48,7 +48,7 @@ int cmd_merge_file(int argc, const char **argv, const char *prefix)
                        merge_style = git_xmerge_style;
        }
 
-       argc = parse_options(argc, argv, options, merge_file_usage, 0);
+       argc = parse_options(argc, argv, prefix, options, merge_file_usage, 0);
        if (argc != 3)
                usage_with_options(merge_file_usage, options);
        if (quiet) {