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On Tue, Jul 10, 2018, 9:00 AM Dirk Laurie <> wrote:
2018-07-10 15:30 GMT+02:00 Lorenzo Donati <>:

> Unicode is great for typesetting (I use regularly LaTeX and it's fun to find
> almost every symbol you may imagine, even ancient German runic scripts!),
> but it sucks (IMHO) for general programming or computer-related stuff. Too
> much mind overhead to use correctly for little gain.

Yes, yes, but — if you will allow me to return to Lua and UTF-8 — there would
be more gain for a programmer if we had (if it is not too late already
for Lua 5.4)
utf8 versions of find, sub, match, gsub, gmatch, reverse. Just those, not asking
for upper/lower, operating only on simple codepoints, no combining characters,
no need for a C library.

Utf8 != Unicode. It's an encoding; you don't get to pick a subset and still claim Unicode support.

"Simple codepoints"? Does Unicode define that? If not, who decides what that means? Zero-width space is pretty simple.

No combining chars? Ok, but that would not be Unicode. Practical result: massive confusion and complaining. You cannot accept Unicode and reject combining chars.

utf8.find ("Hélène",'n')  --> 5 5
utf8.sub ("Hélène",5)   --> 'ne'
utf8.gsub ("Hélène","[éè]","e")  --> 'Helene' 2
utf8.reverse ("Hélène")   --> 'enèléH'