git-check-attr: Process command-line args more systematically

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/check-attr.c b/builtin/check-attr.c
index de3fef734846e8d9e6f7de2709546fe1a22c866b..e9b827ffb58f10d3cdcb73e45e332e34ae2b47ed 100644 (file)
--- a/builtin/check-attr.c
+++ b/builtin/check-attr.c
@@ -81,8 +81,6 @@ int cmd_check_attr(int argc, const char **argv, const char *prefix)
 
        argc = parse_options(argc, argv, prefix, check_attr_options,
                             check_attr_usage, PARSE_OPT_KEEP_DASHDASH);
-       if (!argc)
-               usage_with_options(check_attr_usage, check_attr_options);
 
        if (read_cache() < 0) {
                die("invalid cache");
@@ -94,8 +92,17 @@ int cmd_check_attr(int argc, const char **argv, const char *prefix)
                        doubledash = i;
        }
 
-       /* If there is no double dash, we handle only one attribute */
-       if (doubledash < 0) {
+       /* Check attribute argument(s): */
+       if (doubledash == 0) {
+               error_with_usage("No attribute specified");
+       } else if (doubledash < 0) {
+               /*
+                * There is no double dash; treat the first
+                * argument as an attribute.
+                */
+               if (!argc)
+                       error_with_usage("No attribute specified");
+
                cnt = 1;
                filei = 1;
        } else {
@@ -103,9 +110,7 @@ int cmd_check_attr(int argc, const char **argv, const char *prefix)
                filei = doubledash + 1;
        }
 
-       if (cnt <= 0)
-               error_with_usage("No attribute specified");
-
+       /* Check file argument(s): */
        if (stdin_paths && filei < argc)
                error_with_usage("Can't specify files with --stdin");