Comment 4 for bug 1765374

That's not what I meant, I meant the CLI Desktop installer (if there's still such a thing), I haven't tried it in several years but it did work with Hebrew due to some work done on the Debian Installer which fully supports Hebrew in CLI (I'm guessing with some sort of FriBiDi implementation and the correct fonts).

I can try and ask the guys who were involved back then and see what they remember from this process, BTW I'm also maintaining the Debian Installer Hebrew translation and it certainly works with Hebrew so it's definitely doable yet might be a bit complex.