Find URLs with or without protocol

(?i)\b((?:[a-z][\w-]+:(?:/{1,3}|[a-z0-9%])|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}/)(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'".,<>?«»“”‘’]))

Finds urls of the form: http://blah.com, www.blah.com, mailto:info@blah.com, etc. This regex was pulled from: http://daringfireball.net/2010/07/improved_regex_for_matching_urls

Blake Robertson
09/24/2012 21:54:46

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Find URLs with or without protocol

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