Hi Hans,

when combining e.g. certain number substitutions like onum and
pnum or tnum and lnum, node mode seems to work fine. However,
those do have value in math mode as well which node mode does not
currently support. For comparison, here is a test file:

    https://bitbucket.org/phg/lua-la-tex-tests/raw/93745dba31e23febb02191c039dea2de743ce77a/cnt-features-8-combined-num.tex

Is there a way to define a font with the combination of, say tnum
and lnum that will work in math mode? If not, are there plans to
implement it in the future?

Best regards,
Philipp