title_body: Calibre fails to unwrap Georgian text
upvoted_answer: I have checked the source code and it turns out that Calibre doesn't support non-latin script at all. The bug was filed here: https://bugs.launchpad.net/calibre/+bug/1753533 the developer, however, refuses to use Unicode data to recognize alphabetic characters. Mkhedruli was added, but if you want other alphabets to be supported, you either need to manipulate the source code or file another bug.