private function trim()
	{
		if (utf8_strlen($this->message) <= ($this->length + $this->length_tolerance))
		{
			return false;
		}

		if (!$this->bbcode_uid)
		{
			$this->trimmed_message = utf8_substr($this->message, 0, $this->length) . $this->append_str;
			return true;
		}

		$this->trim_action();
		return $this->bbcodes->is_trimmed();
	}