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On 04-12-2012 14:33, Marc Balmer wrote:
You string is encoded in UTF-8, but all Lua string functions assume ASCII (or any 8 bit variant thereof). To deal with UTF-8 strings, you need special functions. Maybe it's time to release a utf-8 module that provides such functions...
We discussed this at the workshop during Roboerto's talk. Some implementations already exists, I belive that the LuaTex used the slnunicode module[1]..

/Erik

[1]
http://files.luaforge.net/releases/sln/slnunicode