bug#59468: 29.0.50; c-ts-mode cannot fontify after macros are encountered

[Eli Zaretskii]

> From: Yuan Fu <casouri@gmail.com>
> Date: Tue, 22 Nov 2022 20:13:49 -0800
> Cc: luangruo@yahoo.com,
>  59468@debbugs.gnu.org
> 
> > Is it possible to do something on our end for processing the error nodes,
> > which would remedy the issue with macros?  Or maybe some other way of
> > handling the macros by ourselves?
> 
> For each of the ERROR nodes, we can look at the skipped tokens inside, and 
> look around with some regex searching. That would take some non-trivial 
> effort, I imagine.

If nothing better comes up, maybe this is what we should do.  For
fontifications, perhaps using some small subset of CC Mode for level-2
fontifications should be relatively easy?