submodule: add a helper to check if it is safe to write to .gitmodules

diff --git a/builtin/shortlog.c b/builtin/shortlog.c
index 581293ee7b2138daff127dfdafcaf5d927a1d5ba..3898a2c9c428864caf43b0f8160a441488643e29 100644 (file)
--- a/builtin/shortlog.c
+++ b/builtin/shortlog.c
@@ -11,7 +11,8 @@
 #include "parse-options.h"
 
 static char const * const shortlog_usage[] = {
-       N_("git shortlog [<options>] [<revision-range>] [[--] [<path>...]]"),
+       N_("git shortlog [<options>] [<revision-range>] [[--] <path>...]"),
+       N_("git log --pretty=short | git shortlog [<options>]"),
        NULL
 };
 
@@ -284,6 +285,7 @@ int cmd_shortlog(int argc, const char **argv, const char *prefix)
        for (;;) {
                switch (parse_options_step(&ctx, options, shortlog_usage)) {
                case PARSE_OPT_HELP:
+               case PARSE_OPT_ERROR:
                        exit(129);
                case PARSE_OPT_DONE:
                        goto parse_done;
@@ -293,6 +295,11 @@ int cmd_shortlog(int argc, const char **argv, const char *prefix)
 parse_done:
        argc = parse_options_end(&ctx);
 
+       if (nongit && argc > 1) {
+               error(_("too many arguments given outside repository"));
+               usage_with_options(shortlog_usage, options);
+       }
+
        if (setup_revisions(argc, argv, &rev, NULL) != 1) {
                error(_("unrecognized argument: %s"), argv[1]);
                usage_with_options(shortlog_usage, options);