# How to match upper case letters in filter?

**URL:** https://community.mp3tag.de/t/how-to-match-upper-case-letters-in-filter/11560
**Category:** General Discussion
**Created:** [February 8, 2011, 5:11am UTC](https://community.mp3tag.de/t/how-to-match-upper-case-letters-in-filter/11560 "2011-02-08T05:11:20Z")
**Posts on this page:** 1
**Showing post:** 1

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### Author: ![Oblio](https://community.mp3tag.de/user_avatar/community.mp3tag.de/oblio/32/4828_2.png) [@Oblio](https://community.mp3tag.de/u/Oblio)
#### Post date: [February 8, 2011, 5:11am UTC](https://community.mp3tag.de/t/how-to-match-upper-case-letters-in-filter/11560/1 "2011-02-08T05:11:20Z")

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I am trying to match consecutive upper case letters but neither of the following work

composer MATCHES (?-i)\u\u  
composer MATCHES (?-i)\L\L

Matching consecutive lower case letters works ok with \l\l or \U\U

I think it must be a bug.

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