[luatex] How to query fonts.handlers

[Ulrike Fischer]

Am Thu, 7 Feb 2019 09:12:57 +1300 schrieb Henri Menke:

> Yes, but the other code also works in ConTeXt.  The usage of table.keys
> is actually not necessary and just masked the fact that lookupcache in
> plain LuaTeX is nil.

I found the  kern and ktest table in 

for k,v in pairs(tfmdata.shared.rawdata.resources.features.gpos) do
     print("XXX",k,v)
     end

the lookupcache seems to be a context specific optimization.

-- 
Ulrike Fischer 
http://www.troubleshooting-tex.de/