[luatex] problem with slnunicode's find

[Taco Hoekwater]

Patrick Gundlach wrote:
> Hi Stephan,
> 
>>> --	NOTE: find positions are in bytes for all ctypes! --	use
>>> ascii.sub to cut found ranges!
>> Hmm, neither do I want to cut something nor do I have a range
>> available.  I just want to count.  Attached is my attempt of a utf8
>> aware find function based on the utf8 aware parts of slnunicode.

Luatex itself has an internal UTF-8 counting function. At some point
(don't know when but before 1.0) the internal Unicode library will
replace slnunicode, and I will make sure that it exports a counter
as well.

Best wishes,
Taco