fix(rtl): Sync list of RTL languages with server backend

[nickvergessen]

• Ref Add bidirectional text support - Backend nextcloud/server#47349

[susnux]

Thats wrong, 'uz' is Uzbek which is LTR using latin script.
What you mean is uz_AF which is the afghan dialect writtin RTL.

[susnux]

I am not sure here, I would like to have this as defensive as possible.
This are all valid right-to-left languages, so what if we add one in the future? All apps would need to update the library or otherwise they would be broken.

I do not see any disadvantage by keeping all valid language codes.

[susnux]

This will never be the case as the lang tag on the HTML element which we use to set the language only allows BCP47.
Meaning it must be ur-PK.

[nickvergessen]

Right, I missed
https://github.com/nextcloud/server/blob/82566c5479b7cf3374501a1e6b113680ae75afee/lib/private/TemplateLayout.php#L201-L202

[nickvergessen]

I would like to have this as defensive as possible.

I tried to be as defensive as possible as well, just from another angle. I removed all languages which are not an option on transifex. We have to list RTL languages specifically anyway, as others are not allowed to contain RTL characters. If a language is growing to a "valid" percentage (server requires 50% translated before syncing them) we will notice it anyway and can start improving/listing it.

Looking at the translated percentage, we really only have ar, fa and he to care about at the moment anyway. All others that are marked translated ship 80+% english strings and when clicking around in the UI there are mostly only apps names in translated language

[ShGKme]

I tried to be as defensive as possible as well, just from another angle. I removed all languages which are not an option on transifex. We have to list RTL languages specifically anyway, as others are not allowed to contain RTL characters. If a language is growing to a "valid" percentage (server requires 50% translated before syncing them) we will notice it anyway and can start improving/listing it.

Looking at the translated percentage, we really only have ar, fa and he to care about at the moment anyway. All others that are marked translated ship 80+% english strings and when clicking around in the UI there are mostly only apps names in translated language

What issue having only the list of these languages in the library instead of all rtl languages does fix?

[susnux]

I removed all languages which are not an option on transifex.

Transifex supports those languages they are just not translated yet:
https://explore.transifex.com/languages/

But yes this current list is also invalid as some entries like arz are not valid bcp47 and never will work (correct is ar-EG).

[nickvergessen]

Replaced by #803