protected function onReady( $sign, &$status, &$buffer, &$option )
	{
		if( $sign == "-" )
		{
			$option	= "";
			$status	= self::STATUS_READ_OPTION_KEY;
		}
		else if( preg_match( "@[a-z0-9]@i", $sign ) )
		{
			$buffer	.= $sign;
			$status	= self::STATUS_READ_ARGUMENT;
		}
	}