def groups_option(f):
    new_func = click.option("-g", "--groups",
                            help="Comma-separated list of requirement groups "
                            "to include.")(f)
    return update_wrapper(new_func, f)
def normalizerootdir(dir, funcname):
    if dir == ".":
        util.nouideprecwarn(
            "match.%s() no longer accepts '.', use '' instead." % funcname, "20190805"
        )
        return ""
    return dir