Re: M-x grep is too slow

[storm@cua.dk (Kim F. Storm)]

Richard Stallman <rms@gnu.org> writes:

>     > Do you mean caching at the Lisp level inside Font-Lock mode?
>     > That might be easy to do.
> 
>     I was thinking about doing it explicitly in compile.el...
> 
> Is this slowness in font-lock or is it in compile.el?

I don't really know.

The code that calls previous-single-property-change is in compile.el,
but it could be that the code is actually called by font-lock.

In any case, the 'message and 'directory properties are local to
compile.el, so I would suppose that the caching (if possible)
would have to be done in compile.el.

Maybe someone who better understands the new compile.el could comment
on this.