[luatex] loading new language patterns

Luis Rivera jlrn77 at gmail.com
Sat May 19 22:27:58 CEST 2018

I'm trying to understand how to load a new set of language patterns in
plain luatex. This far, I collect I have to do

grc = lang.new()
pattfile = io.open(kpse.find_file('grchyph.tex'), 'r')
lang.patterns(grc, pattfile:read('*all'))


\greek χαῖρε

But then I don't know how to access the patterns with a language declaration.

I'm sorry, but I fear the documentation is far too terse on this topic
for a non-programmer. Any hints are welcome.

Thanks in advance,

Luis Rivera

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