Re: Window configuration UI

[Michael Sperber <sperber@deinprogramm.de>]

Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> It would be interesting to try replacing the current
>> window-configuration code with winsav.el, to see if it is fast enough.
>> It seems to me that `winsav-get-window-tree' could be made a lot
>> faster, especially by writing it in C.  But I don't know if it needs
>> to be any faster.
>
> It doesn't seem to be noticeably slow.  But it does not provide a 100%
> replacement for the window-configuration functions (mostly because of
> the issue of preserving window-identity vs. creating new windows).
> Not sure how important it is.  IIUC XEmacs has switched to such an
> Elisp-only implementation of window-configurations so they probably know
> more about the impact of this incompatibility.

There wasn't a noticeable performance impact, but a small number of
packages (used to) depend on preservation of window identity.  Most
recently, ECB broke on XEmacs 21.5 because of this, but we've since
worked out a fix that I expect to apply shortly.

-- 
Cheers =8-} Mike
Friede, Völkerverständigung und überhaupt blabla