git remote update: Fallback to remote if group does not exist

diff --git a/builtin-checkout.c b/builtin-checkout.c
index 6cdb320ae72b438031049892a9bb78e5bc523c73..fc55bbe14d58df66e71a9e1975bb7c4eecdc1a49 100644 (file)
--- a/builtin-checkout.c
+++ b/builtin-checkout.c
@@ -295,6 +295,8 @@ static void show_local_changes(struct object *head)
        init_revisions(&rev, NULL);
        rev.abbrev = 0;
        rev.diffopt.output_format |= DIFF_FORMAT_NAME_STATUS;
+       if (diff_setup_done(&rev.diffopt) < 0)
+               die("diff_setup_done failed");
        add_pending_object(&rev, head, NULL);
        run_diff_index(&rev, 0);
 }
@@ -351,8 +353,16 @@ struct branch_info {
 static void setup_branch_path(struct branch_info *branch)
 {
        struct strbuf buf = STRBUF_INIT;
-       strbuf_addstr(&buf, "refs/heads/");
-       strbuf_addstr(&buf, branch->name);
+       int ret;
+
+       if ((ret = interpret_nth_last_branch(branch->name, &buf))
+           && ret == strlen(branch->name)) {
+               branch->name = xstrdup(buf.buf);
+               strbuf_splice(&buf, 0, 0, "refs/heads/", 11);
+       } else {
+               strbuf_addstr(&buf, "refs/heads/");
+               strbuf_addstr(&buf, branch->name);
+       }
        branch->path = strbuf_detach(&buf, NULL);
 }
 
@@ -397,7 +407,7 @@ static int merge_working_tree(struct checkout_opts *opts,
                topts.verbose_update = !opts->quiet;
                topts.fn = twoway_merge;
                topts.dir = xcalloc(1, sizeof(*topts.dir));
-               topts.dir->show_ignored = 1;
+               topts.dir->flags |= DIR_SHOW_IGNORED;
                topts.dir->exclude_per_dir = ".gitignore";
                tree = parse_tree_indirect(old->commit->object.sha1);
                init_tree_desc(&trees[0], tree->buffer, tree->size);
@@ -548,8 +558,8 @@ static int switch_branches(struct checkout_opts *opts, struct branch_info *new)
 
        if (!old.commit && !opts->force) {
                if (!opts->quiet) {
-                       fprintf(stderr, "warning: You appear to be on a branch yet to be born.\n");
-                       fprintf(stderr, "warning: Forcing checkout of %s.\n", new->name);
+                       warning("You appear to be on a branch yet to be born.");
+                       warning("Forcing checkout of %s.", new->name);
                }
                opts->force = 1;
        }
@@ -661,6 +671,9 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
                arg = argv[0];
                has_dash_dash = (argc > 1) && !strcmp(argv[1], "--");
 
+               if (!strcmp(arg, "-"))
+                       arg = "@{-1}";
+
                if (get_sha1(arg, rev)) {
                        if (has_dash_dash)          /* case (1) */
                                die("invalid reference: %s", arg);