Brilliant! Growing up in Slovenia there was only the typist locale, qwertz of course. Coding was full of altgr + <key> combos and it gets real annoying real fast.
Most of us nerds switched to the US layout fairly early and simply ignored diactritics. š becomes s, č becomes c, ž becomes z. Especially when texting came around and mobile phones didn’t even have those letters. Most people from Slovenia can fluently read words without diacritics and recognize based on context. Even if you weren’t a nerd, in the 90’s and 00’s it was a gamble if the software or website you’re using will render those characters so people learned not to use them.
iOS still doesn’t have a Slovenian layout. Not sure about Android.
I hear in the commodore days people used to write ss, cc, zz but that didn’t catch on in my generation.