protected function computePreservesNewLines()
	{
		foreach ($this->branches as $branch)
		{
			$style = '';
			foreach ($branch as $element)
			{
				$style .= $this->getStyle($element, true);
			}

			if (preg_match('(.*white-space\\s*:\\s*(no|pre))is', $style, $m) && strtolower($m[1]) === 'pre')
			{
				$this->preservesNewLines = true;

				return;
			}
		}
		$this->preservesNewLines = false;
	}