bug#64204: C/C++ local variables not syntax highlighted if they start with $

[Po Lu]

Eli Zaretskii <eliz@gnu.org> writes:

> It is fontified the way the syntax is interpreted, which is exactly
> what I'm talking about.

The problem is that:

  int $lsp;

is not interpreted as an ``error'', just as some syntax that cannot be
fontified.  CC Mode is not in any position to determine whether or not
syntax is valid.