[luatex] adjusting `hyphenate` callback for single function

[Werner LEMBERG]

> talking of luatex, if you want to influence hyphenation, you can
> best plug into the pre_linebreak_filter and hpack_filter callbacks
> and just do some interpretation of the node lists (glyph nodes) and
> bases on what you want to do inject or replace them by disc nodes
> that then control the hyphenator later on as we as the linbebreak
> routine

Yes, something along this route, thanks!


    Werner