bug#4835: 23.1; Improper `Invalid face reference' messages. Performance degraded.

[Drew Adams]

Any news on this?

> In any case, _this_ bug is about the `Invalid face reference' 
> messages and performance degradation. I get those messages
> even when using a symbol function, so this bug is not fixed
> by simply adding a restriction to symbols.
> 
> If I'm mistaken and have missed something, please advise. I 
> will be happy if I can get the function to work without
> provoking those bizarre error messages and slowing Emacs to
> a crawl. I don't have a problem with using a symbol function
> instead of a lambda.
> 
> IOW, for Emacs generally, I agree with you that "it would be 
> nice if a lambda expression can be used" at some point.
> But my concern now is the `Invalid face reference' messages.
> I corrected the code to use a symbol, not a lambda, but the
> problem remains.
> 
> Again, if I missed something, please let me know. I'm no 
> expert on font-lock. I'm hoping that I simply messed up
> somewhere, and there is not some bug in the font-lock code
> that is causing this behavior. The latter would mean that
> I won't be able to make this work in other Emacs versions,
> even after the bug is fixed. The former would mean I would
> learn something; thank you; and be on my way.