submodule: teach rm to remove submodules unless they contain a git directory

diff --git a/builtin/push.c b/builtin/push.c
index 08ccb891c679827aa904b6fe93a5a7d9d9bcaaae..9ed558485babb4194729a97320e62402af8481bd 100644 (file)
--- a/builtin/push.c
+++ b/builtin/push.c
@@ -147,12 +147,37 @@ static void setup_push_upstream(struct remote *remote, int simple)
        add_refspec(refspec.buf);
 }
 
+static char warn_unspecified_push_default_msg[] =
+N_("push.default is unset; its implicit value is changing in\n"
+   "Git 2.0 from 'matching' to 'simple'. To squelch this message\n"
+   "and maintain the current behavior after the default changes, use:\n"
+   "\n"
+   "  git config --global push.default matching\n"
+   "\n"
+   "To squelch this message and adopt the new behavior now, use:\n"
+   "\n"
+   "  git config --global push.default simple\n"
+   "\n"
+   "See 'git help config' and search for 'push.default' for further information.\n"
+   "(the 'simple' mode was introduced in Git 1.7.11. Use the similar mode\n"
+   "'current' instead of 'simple' if you sometimes use older versions of Git)");
+
+static void warn_unspecified_push_default_configuration(void)
+{
+       static int warn_once;
+
+       if (warn_once++)
+               return;
+       warning("%s\n", _(warn_unspecified_push_default_msg));
+}
+
 static void setup_default_push_refspecs(struct remote *remote)
 {
        switch (push_default) {
        default:
        case PUSH_DEFAULT_UNSPECIFIED:
                default_matching_used = 1;
+               warn_unspecified_push_default_configuration();
                /* fallthru */
        case PUSH_DEFAULT_MATCHING:
                add_refspec(":");
@@ -186,8 +211,8 @@ static const char message_advice_pull_before_push[] =
 static const char message_advice_use_upstream[] =
        N_("Updates were rejected because a pushed branch tip is behind its remote\n"
           "counterpart. If you did not intend to push that branch, you may want to\n"
-          "specify branches to push or set the 'push.default' configuration\n"
-          "variable to 'current' or 'upstream' to push only the current branch.");
+          "specify branches to push or set the 'push.default' configuration variable\n"
+          "to 'simple', 'current' or 'upstream' to push only the current branch.");
 
 static const char message_advice_checkout_pull_push[] =
        N_("Updates were rejected because a pushed branch tip is behind its remote\n"
@@ -327,13 +352,21 @@ static int option_parse_recurse_submodules(const struct option *opt,
                                   const char *arg, int unset)
 {
        int *flags = opt->value;
+
+       if (*flags & (TRANSPORT_RECURSE_SUBMODULES_CHECK |
+                     TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND))
+               die("%s can only be used once.", opt->long_name);
+
        if (arg) {
                if (!strcmp(arg, "check"))
                        *flags |= TRANSPORT_RECURSE_SUBMODULES_CHECK;
+               else if (!strcmp(arg, "on-demand"))
+                       *flags |= TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND;
                else
                        die("bad %s argument: %s", opt->long_name, arg);
        } else
-               die("option %s needs an argument (check)", opt->long_name);
+               die("option %s needs an argument (check|on-demand)",
+                               opt->long_name);
 
        return 0;
 }