Per-language filter for the library

[Lolle2000la]

Describe your suggested feature

Currently there is no good way to filter for works in the library in a specific language. Ideally I would want to:

1. Have a list of languages of which there are currently entries in the library
2. Be able to filter in or out specific languages, i.e.
   • show only Japanese
   • don't show Japanese and Korean
   • show only Japanese and Korean

It would be nice if it was the same three-state system like with other states like has-unread-chapters etc, where you can either filter in, out or not do any filtering.

Other details

No response

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[MajorTanya]

And how would Mihon do this for entries with other values or no specification on what the (original?) language is? Hide them entirely unless this filter is disabled?
Considering the infrequency of sources correctly tagging this information in the first place, I highly doubt there's a good way to do this, if there even is a way in the first place.

[BrutuZ]

I assumed it would just mimic the extensions language filter in the library, but then you lost me with the tri-state bit

[Lolle2000la]

And how would Mihon do this for entries with other values or no specification on what the (original?) language is? Hide them entirely unless this filter is disabled?
Considering the infrequency of sources correctly tagging this information in the first place, I highly doubt there's a good way to do this, if there even is a way in the first place

For one there are already language distinctions in most sources (EN, JP, ALL, etc.) so for the beginning this could only filter entries from sources that themselves filter for certain languages. It musn't be perfect right of the bat to be helpful for speakers of more than one language. Then just allow sources to also save the language for entries in the metadata if that isn't the case already, even when saved via an "ALL" source.

Edit: most sources I'm aware of already take language into account in some shape or form, even obscure ones, offering only one or detecting them correctly when sourced by Mihon.

I assumed it would just mimic the extensions language filter in the library, but then you lost me with the tri-state bit

It would be like most other library filters. Default is no-filtering. Click once and you filter in (only entries with read chapters). Click again and you filter out (don't show entries with read chapters).