Text::cleanTrashCanSuffix

static function cleanTrashCanSuffix($string)
{
	if(
		mb_substr($string, -1) !== 'i' ||
		mb_strlen($string) < 17 ||
		mb_substr($string, -16, 1) !== 'i' ||
		!(
			preg_match('%i[0-9a-z]{0,4}[0-9]{10,12}i$%iU' . BX_UTF_PCRE_MODIFIER, $string) ||
			preg_match('%i[0-9]{11}[a-z]{3}i$%iU' . BX_UTF_PCRE_MODIFIER, $string) //our cp old version
		)
	)
	{
		return $string;
	}

	return mb_substr($string, 0, -16);
}