Re: Font-lock decides function call is function declaration in C+ +

[Chong Yidong <cyd@stupidchicken.com>]

Alan Mackenzie <acm@muc.de> writes:

> Further observations:
> (i) The bug doesn't happen in C Mode.
> The bug happens:
> (ii) in Emacs 5.21.3/CC Mode 5.31.4
> (iii) With jit-lock disabled (thankfully ;-)
> (iv) in Emacs 5.21.3/CC Mode 5.30.3
>
> So it seems its entirely a CC Mode bug.  I'm going to try and track it
> down, though I suspect it could be quite tricky to find.  Thanks for
> giving that recipe for producing the bug.

I think the problem is that when the buffer is in the state

  foo
  bar ();

foo looks like a type, so it is inserted in the cache variable
c-found-types.  When you add the "()":

  foo()
  bar();

this guess is no longer valid, but foo is not removed from
c-found-types.  Therefore, when you insert the final ";",

  foo();
  bar();

the call to foo(); is highlighted as though it were a constructor.
Note that if you do M-: (c-clear-found-types) prior to inserting the
final ";", the misfontification does not occur.

I don't know what the Right Fix is, however.