# Regex handling: Mac vs. Win

**URL:** https://community.mp3tag.de/t/regex-handling-mac-vs-win/55706
**Category:** Mac
**Created:** [January 1, 2022, 7:48pm UTC](https://community.mp3tag.de/t/regex-handling-mac-vs-win/55706 "2022-01-01T19:48:10Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [January 3, 2022, 6:49pm UTC](https://community.mp3tag.de/t/regex-handling-mac-vs-win/55706/5 "2022-01-03T18:49:38Z")

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AFAIK the documentation on MP3tag for Mac states that for "[Replace with regular expressions](https://community.mp3tag.de/t/quick-actions-and-action-groups/51882)" a different syntax is used:

> [@Quick Actions and Action Groups](https://community.mp3tag.de/t/quick-actions-and-action-groups/51882/1):
>
> **Mp3tag for Mac** uses the [ICU regular expression engine](https://unicode-org.github.io/icu/userguide/strings/regexp.html). A good resource to test and experiment with regular expressions is [regex101](https://regex101.com/).

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