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

[Eli Zaretskii]

> Cc: 59468@debbugs.gnu.org
> Date: Thu, 24 Nov 2022 08:36:13 +0800
> From:  Po Lu via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> >> #ifdef FRAME_DEBUG
> >>   uint_fast64_t last_frame_ms = output->last_frame_time / 1000;
> >>   fprintf (stderr,
> >>       "Drawing the last frame took: %"PRIuFAST64" ms (%"PRIuFAST64")\n",
> >>       last_frame_ms, time);
> >> #endif
> >>
> >> "PRIuFAST64" is fontified in the error face.
> 
> > Is this valid C? If it it, we should report to tree-sitter-c. If not, we
> > can add a heuristic.
> 
> This is valid C.  PRIuFAST64 is a standard macro containing the format
> specifier for a uint_fast64_t.
> 
> > It fontifies fine here. I guess it’s fixes by some changes I made,
> > although I don’t recall making changes related to if statements.
> 
> Maybe you scrolled up the file instead of down?  That sometimes matters.

I don't see an error, either.  I did scroll from above.