[slime-devel] slime-after-change-function performance issue

[Matthias Koeppe]

Helmut Eller <heller at common-lisp.net> writes:

> * Russell McManus [2005-09-20 12:37+0200] writes:
>
>> On XEmacs, this function appears to cause serious thrashing for me.
>> When I take it out of after-change-functions, the problem goes away.
>
> XEmacs has global after-change-functions by default, ie. the functions
> are run for each buffer.  I guess that's a little bit too often for
> our purposes.
>
> They're now buffer-local in the repl buffer.
>
> I still think that the after-change-functions are quite an ugly way to
> achieve something and should be replaced with something less intrusive.

For XEmacs, a much more elegant implementation using "extents" should
be possible.  For Emacs, I don't see a better way than
after-change-functions, however.

-- 
Matthias Köppe -- http://www.math.uni-magdeburg.de/~mkoeppe