protected function checkRow(array $row) {
		foreach ($row as $column => $str) {
			$width = Colors::width( $str, $this->isAsciiPreColorized( $column ) );
			if (!isset($this->_width[$column]) || $width > $this->_width[$column]) {
				$this->_width[$column] = $width;
			}
		}

		return $row;
	}