Taglib 2.0: Mixxx joins multi value tags due to new " / " separator (loss of user data)

[daschuer]

Bug Description

Taglib 2.0 has the following behavioral change:

• The basic tag methods (e.g. genre()) separate multiple values with " / " instead of " ".

https://github.com/taglib/taglib/releases/tag/v2.0

After playing a track, Mixxx writes back changes to the file metadata. If a multi value tag has been imported with Taglib 1. It is stored in the Mixxx database with the old separator " " but will be returned from taglib 2 with " / ". Mixxx assumes a user change and will write the old " " separator to the file, joining both tags. This must not happen.

Example: A track has two genres: "Rock" and "Pop".
Taglib 1 return "Rock Pop" which is likely in the Mixxx database. After update to Taglib 2, it returns "Rock / Pop" and Mixxx corrects it to "Rock Pop" which will create a new "Rock Pop" genre tag instead of keeping two separate genres.

Version

No response

OS

No response