[luatex] strategy for margin kerning and pre_linebreak_filter?

[Taco Hoekwater]

Patrick Gundlach wrote:
> Or one should be able
> to change the font of the disc node as well (node.font=n where
> node.id==7). 

You can already do that, but you have to descend into the
pre/post/replace items of the discretionary node to do so.

Best wishes,
Taco