# Regular Expressions

**URL:** <https://www.finalbuilder.com/forums/t/regular-expressions/4784>\
**Category:** Feature Requests\
**Created:** [September 6, 2011, 4:51am UTC](https://www.finalbuilder.com/forums/t/regular-expressions/4784 "2011-09-06T04:51:17Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mrrimmer](https://www.finalbuilder.com/forums/letter_avatar_proxy/v4/letter/m/e9c0ed/32.png) [@mrrimmer](https://www.finalbuilder.com/forums/u/mrrimmer)\
**Post date:** [September 6, 2011, 4:51am UTC](https://www.finalbuilder.com/forums/t/regular-expressions/4784/1 "2011-09-06T04:51:17Z")

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The .NET regular expression library contains some very useful APIs for pattern matching and string transformation.&nbsp; It would be useful to be able to describe file patterns in terms of regular expressions so that groups of files can be handled by appropriate (asynchronous) action groups, with a specific action group dedicated to a particular file type.

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<div class="post-metadata">

**Author:** ![mrrimmer](https://www.finalbuilder.com/forums/letter_avatar_proxy/v4/letter/m/e9c0ed/32.png) [@mrrimmer](https://www.finalbuilder.com/forums/u/mrrimmer)\
**Post date:** [September 6, 2011, 5:02am UTC](https://www.finalbuilder.com/forums/t/regular-expressions/4784/2 "2011-09-06T05:02:00Z")

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I see that there is some support for this already in the Text Find / replace action.