# Unify expressions with regex

**URL:** https://community.mp3tag.de/t/unify-expressions-with-regex/65489
**Category:** Support
**Created:** [August 5, 2024, 5:36pm UTC](https://community.mp3tag.de/t/unify-expressions-with-regex/65489 "2024-08-05T17:36:01Z")
**Posts on this page:** 1
**Showing post:** 2

<div class="post-metadata">

### 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: [August 5, 2024, 6:11pm UTC](https://community.mp3tag.de/t/unify-expressions-with-regex/65489/2 "2024-08-05T18:11:34Z")

</div>

The double backslash indicates that you have multi-value fields.  
You would have to merge them first.  
See this thread on the treatment of list with duplicate words:

> [@Merge duplicate words](https://community.mp3tag.de/t/merge-duplicate-words/16289):
>
> Hi, I would like to find in genre duplicate words and merge them together. This is an example of genre tag: Before AFRICA; AFRICA; NATURAL WORLD; NATURE STUDY; NATURE; DRAMA ADVENTURE; DRAMA WORLD; PERCUSSION; INSTRUMENTS SOLO PERCUSSION; WILDLIFE MOVEMENT; DRAMA ADVENTURE; AFRICA; FILM STYLES ANCIENT ROME; AFRICA After AFRICA; NATURAL WORLD; NATURE STUDY; NATURE; DRAMA WORLD; PERCUSSION; INSTRUMENTS SOLO PERCUSSION; WILDLIFE MOVEMENT; DRAMA ADVENTURE; FILM STYLES ANCIENT ROME ; is the …

---

_[View the full topic](https://community.mp3tag.de/t/unify-expressions-with-regex/65489)._