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XRegExp is an open source (MIT license) JavaScript library that provides an augmented, extensible, cross-browser implementation of regular expressions, including support for additional syntax, flags, and methods.

XRegExp is fully compliant with the regular expression flavor specified in ECMA-262 Edition 3 (ES3), and has been tested with Internet Explorer 5.5-8, Firefox 2-3.5, Safari 3-4, Chrome 1-2, and Opera 9. XRegExp uses feature detection-no browser sniffing.

Features

* Adds new regex and replacement text syntax, including comprehensive support for named capture.
* Adds two new regex flags: s, to make dot match all characters (aka singleline mode), and x, for free-spacing and comments (aka extended mode).
* Provides a suite of 12 functions and methods that make complex regex processing a breeze.
* Automagically fixes the most commonly encountered cross-browser inconsistencies in regex behavior and syntax.
* Lets you easily create and use plugins that add new syntax and flags to XRegExp's regular expression language.



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