Regex modified to to not capture brackets

Modified the existing regex from th TLD onwards

Credit to @gruber for the regex info
https://gist.github.com/gruber/249502

lib/Cake/View/Helper/TextHelper.php

@@ -107,7 +107,7 @@ public function autoLinkUrls($text, $options = array()) {
 		$this->_placeholders = array();
 		$options += array('escape' => true);
 
-		$pattern = '#(?<!href="|src="|">)((?:https?|ftp|nntp)://[\p{L}0-9.\-_:]+(?:[/?][^\s<]*)?)#ui';
+		$pattern = '#(?<!href="|src="|">)((?:https?|ftp|nntp)://[\p{L}0-9.\-_:]+(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:\'".,<>?«»“”‘’]))#i';
 		$text = preg_replace_callback(
 			$pattern,
 			array(&$this, '_insertPlaceHolder'),