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A comment on In search of the perfect URL validation regex. Parent comment

Re:In search of the perfect URL validation regex by keeperofdakeys on Sunday June 22, 2014 @07:38PM (#7929591)
From experience, the python re module does weird things sometimes. There is a better third-party regex module, https://pypi.python.org/pypi/regex.
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Re:In search of the perfect URL validation regex by pipeep on Sunday June 22, 2014 @07:56PM (#7929609)
Does it use NFA?

http://swtch.com/~rsc/regexp/regexp1.html

Because the issue with the URL regex mentioned is with backtracking.

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