*/
        finish_command(&ec_process);
 
-       if (prefixcmp(buffer.buf, "emacsclient")) {
+       if (!starts_with(buffer.buf, "emacsclient")) {
                strbuf_release(&buffer);
                return error(_("Failed to parse emacsclient version."));
        }
 
 static int git_help_config(const char *var, const char *value, void *cb)
 {
-       if (!prefixcmp(var, "column."))
+       if (starts_with(var, "column."))
                return git_column_config(var, value, "help", &colopts);
        if (!strcmp(var, "help.format")) {
                if (!value)
                add_man_viewer(value);
                return 0;
        }
-       if (!prefixcmp(var, "man."))
+       if (starts_with(var, "man."))
                return add_man_viewer_info(var, value);
 
        return git_default_config(var, value, cb);
 
 static int is_git_command(const char *s)
 {
+       if (is_builtin(s))
+               return 1;
+
+       load_command_list("git-", &main_cmds, &other_cmds);
        return is_in_cmdlist(&main_cmds, s) ||
                is_in_cmdlist(&other_cmds, s);
 }
 {
        if (!git_cmd)
                return "git";
-       else if (!prefixcmp(git_cmd, "git"))
+       else if (starts_with(git_cmd, "git"))
                return git_cmd;
        else if (is_git_command(git_cmd))
                return prepend("git-", git_cmd);
        int nongit;
        const char *alias;
        enum help_format parsed_help_format;
-       load_command_list("git-", &main_cmds, &other_cmds);
 
        argc = parse_options(argc, argv, prefix, builtin_help_options,
                        builtin_help_usage, 0);
        if (show_all) {
                git_config(git_help_config, NULL);
                printf(_("usage: %s%s"), _(git_usage_string), "\n\n");
+               load_command_list("git-", &main_cmds, &other_cmds);
                list_commands(colopts, &main_cmds, &other_cmds);
        }