Webmozart\Console\Api\Args\Format\CommandOption::removeDashPrefix PHP Method

    private function removeDashPrefix($string)
    {
        if ('--' === substr($string, 0, 2)) {
            $string = substr($string, 2);
        } elseif (isset($string[0]) && '-' === $string[0]) {
            $string = substr($string, 1);
        }
        return $string;
    }