Re:Show HN: Eskéndereyya – Learn How to Read and Write Arabi...
by varjag on Sunday December 18, 2016 @06:01AM
(#13205322)
Й is absolutely linked with и, and it arose as alphabetic distinction from it. It appeared and disappeared for certain periods; in Russian it reestablished as a letter only in 20th century. It is still commonly collated with И in indexes and dictionaries.
> "Ё" is a bit more tricky, but nevertheless — there's no another letter in Russian alphabet we could put umlaut on and get the result similar to putting umlaut on "е".
This is a bizarre distinction: diacritics in natural languages aren't supposed to be freely recombinable.
I guess "ь" has more right to be called diacritic, because it genuinely has 1 purpose: altering the other sounds. But even that is treated as a separate letter.
It's nothing like diacritics in French, German or even Latvian, let alone Arabic.