I'm curious how they generated that list Synthetic codepoints get dynamically assigned as they are encountered during program execution. I'm also sort of curi

I'm curious how they generated that list Synthetic codepoints get dynamically assigned as they are encountered during program execution. I'm also sort of curious what their rationale is for doing any of this in the first place The rational is constant-time indexing at grapheme cluster level, with the regex engine probably part of the motivation.