# Merging several Tag Fields into CONTENTGROUP

**URL:** https://community.mp3tag.de/t/merging-several-tag-fields-into-contentgroup/10616
**Category:** Support
**Created:** [July 4, 2010, 10:31pm UTC](https://community.mp3tag.de/t/merging-several-tag-fields-into-contentgroup/10616 "2010-07-04T22:31:01Z")
**Posts on this page:** 1
**Showing post:** 15

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### Author: ![Windjammer](https://community.mp3tag.de/user_avatar/community.mp3tag.de/windjammer/32/68_2.png) [@Windjammer](https://community.mp3tag.de/u/Windjammer)
#### Post date: [November 14, 2010, 4:55pm UTC](https://community.mp3tag.de/t/merging-several-tag-fields-into-contentgroup/10616/15 "2010-11-14T16:55:22Z")

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Fantastic! Worked great! 😃

> [@pmj1989](#):
>
> Here it is
> 
> `(?:(?<=,)|(?<=\A)) ?([^,]*),(?=.*?(?<=,) ?\1(?=,|\z))`
> 
> Good you solved that. Any other changes concerning regex engine that don't appear in a changelog?

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