public function anchor($matches)
	{
		if (empty($matches))
		{
			return '';
		}

		$whole = $matches[0];
		$prtcl = rtrim($matches[1], ':');

		$url   = $matches[3];
		$url  .= (isset($matches[4])) ? $matches[4] : '';
		$url  .= (isset($matches[5])) ? $matches[5] : '';
		$url  .= (isset($matches[6])) ? $matches[6] : '';

		$prfx  = preg_replace('/^([\s]*)(.*)/i', "$1", $whole);
		$href  = trim($whole);
		if (substr($href, 0, 1) == '>')
		{
			$href  = ltrim($href, '>');
			$prfx .= '>';
		}

		$txt = $href;

		if ($prtcl == 'mailto')
		{
			$txt  = $url;
			$href = 'mailto:' . Str::obfuscate($url);
		}

		return $prfx . '<a class="ext-link" href="' . $href . '" rel="external">' . $txt . '</a>';
	}