Change language variant for component/file language

[oliverrahner]

Our language files carry simple 2-letter language codes, e.g. de.json for German.
Howevery, I need to tell Weblate that de actually refers to de@informal. The main reason being that we want to use machine translations via DeepL.

I remember doing this for a project years ago, but I can't seem to find how to do it again, even after googling for quite some time...

[oliverrahner]

Of course I found it shortly after finally posting the question :D

What I was looking for is the Language Aliases feature.