Allow parens in urls. Props nbachiyski. fixes #5668
git-svn-id: http://svn.automattic.com/wordpress/trunk@6613 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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@ -1111,7 +1111,7 @@ function clean_url( $url, $protocols = null, $context = 'display' ) {
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$original_url = $url;
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if ('' == $url) return $url;
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$url = preg_replace('|[^a-z0-9-~+_.?#=!&;,/:%@]|i', '', $url);
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$url = preg_replace('|[^a-z0-9-~+_.?#=!&;,/:%@()]|i', '', $url);
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$strip = array('%0d', '%0a');
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$url = str_replace($strip, '', $url);
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$url = str_replace(';//', '://', $url);
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