Comment by thesz
> so you can easily find the beginning of the next or previous character.
It is not true [1]. While it is not UTF-8 problem per se, it is a problem of how UTF-8 is being used.
[1] https://paulbutler.org/2025/smuggling-arbitrary-data-through...
Parent means “character” as defined here in Unicode: https://www.unicode.org/versions/Unicode17.0.0/core-spec/cha..., effectively code points. Meanings 2 and 3 in the Unicode glossary here: https://www.unicode.org/glossary/#character