Merge branch 'ct/advise-push-default' into maint

diff --git a/builtin/push.c b/builtin/push.c
index d315475f16c96a831a11c2aebf00ada40b7c9663..693671315ee11313ca98209ebf28fdeffb13f636 100644 (file)
--- a/builtin/push.c
+++ b/builtin/push.c
@@ -24,6 +24,7 @@ static int progress = -1;
 static const char **refspec;
 static int refspec_nr;
 static int refspec_alloc;
+static int default_matching_used;
 
 static void add_refspec(const char *ref)
 {
@@ -65,6 +66,16 @@ static void set_refspecs(const char **refs, int nr)
        }
 }
 
+static int push_url_of_remote(struct remote *remote, const char ***url_p)
+{
+       if (remote->pushurl_nr) {
+               *url_p = remote->pushurl;
+               return remote->pushurl_nr;
+       }
+       *url_p = remote->url;
+       return remote->url_nr;
+}
+
 static void setup_push_upstream(struct remote *remote)
 {
        struct strbuf refspec = STRBUF_INIT;
@@ -76,7 +87,7 @@ static void setup_push_upstream(struct remote *remote)
                    "\n"
                    "    git push %s HEAD:<name-of-remote-branch>\n"),
                    remote->name);
-       if (!branch->merge_nr || !branch->merge)
+       if (!branch->merge_nr || !branch->merge || !branch->remote_name)
                die(_("The current branch %s has no upstream branch.\n"
                    "To push the current branch and set the remote as upstream, use\n"
                    "\n"
@@ -87,6 +98,12 @@ static void setup_push_upstream(struct remote *remote)
        if (branch->merge_nr != 1)
                die(_("The current branch %s has multiple upstream branches, "
                    "refusing to push."), branch->name);
+       if (strcmp(branch->remote_name, remote->name))
+               die(_("You are pushing to remote '%s', which is not the upstream of\n"
+                     "your current branch '%s', without telling me what to push\n"
+                     "to update which remote branch."),
+                   remote->name, branch->name);
+
        strbuf_addf(&refspec, "%s:%s", branch->name, branch->merge[0]->src);
        add_refspec(refspec.buf);
 }
@@ -95,6 +112,9 @@ static void setup_default_push_refspecs(struct remote *remote)
 {
        switch (push_default) {
        default:
+       case PUSH_DEFAULT_UNSPECIFIED:
+               default_matching_used = 1;
+               /* fallthru */
        case PUSH_DEFAULT_MATCHING:
                add_refspec(":");
                break;
@@ -114,6 +134,45 @@ static void setup_default_push_refspecs(struct remote *remote)
        }
 }
 
+static const char message_advice_pull_before_push[] =
+       N_("Updates were rejected because the tip of your current branch is behind\n"
+          "its remote counterpart. Merge the remote changes (e.g. 'git pull')\n"
+          "before pushing again.\n"
+          "See the 'Note about fast-forwards' in 'git push --help' for details.");
+
+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.");
+
+static const char message_advice_checkout_pull_push[] =
+       N_("Updates were rejected because a pushed branch tip is behind its remote\n"
+          "counterpart. Check out this branch and merge the remote changes\n"
+          "(e.g. 'git pull') before pushing again.\n"
+          "See the 'Note about fast-forwards' in 'git push --help' for details.");
+
+static void advise_pull_before_push(void)
+{
+       if (!advice_push_non_ff_current || !advice_push_nonfastforward)
+               return;
+       advise(_(message_advice_pull_before_push));
+}
+
+static void advise_use_upstream(void)
+{
+       if (!advice_push_non_ff_default || !advice_push_nonfastforward)
+               return;
+       advise(_(message_advice_use_upstream));
+}
+
+static void advise_checkout_pull_push(void)
+{
+       if (!advice_push_non_ff_matching || !advice_push_nonfastforward)
+               return;
+       advise(_(message_advice_checkout_pull_push));
+}
+
 static int push_with_options(struct transport *transport, int flags)
 {
        int err;
@@ -135,14 +194,21 @@ static int push_with_options(struct transport *transport, int flags)
                error(_("failed to push some refs to '%s'"), transport->url);
 
        err |= transport_disconnect(transport);
-
        if (!err)
                return 0;
 
-       if (nonfastforward && advice_push_nonfastforward) {
-               fprintf(stderr, _("To prevent you from losing history, non-fast-forward updates were rejected\n"
-                               "Merge the remote changes (e.g. 'git pull') before pushing again.  See the\n"
-                               "'Note about fast-forwards' section of 'git push --help' for details.\n"));
+       switch (nonfastforward) {
+       default:
+               break;
+       case NON_FF_HEAD:
+               advise_pull_before_push();
+               break;
+       case NON_FF_OTHER:
+               if (default_matching_used)
+                       advise_use_upstream();
+               else
+                       advise_checkout_pull_push();
+               break;
        }
 
        return 1;
@@ -196,13 +262,7 @@ static int do_push(const char *repo, int flags)
                        setup_default_push_refspecs(remote);
        }
        errs = 0;
-       if (remote->pushurl_nr) {
-               url = remote->pushurl;
-               url_nr = remote->pushurl_nr;
-       } else {
-               url = remote->url;
-               url_nr = remote->url_nr;
-       }
+       url_nr = push_url_of_remote(remote, &url);
        if (url_nr) {
                for (i = 0; i < url_nr; i++) {
                        struct transport *transport =