[ANNOUNCEMENT] emacs 27.1-1

[ASSI]

Achim Gratz writes:
> This release seems to have a serious performance regression when using
> diff-mode on large diffs with long lines (e.g. created by comparing the
> logs of two compilations), especially when combined with
> toggle-truncate-lines.  Emacs becomes unresponsive with 100% CPU load
> when scrolling fast, sometimes for several seconds.  The CPU time seems
> to be spent in redisplay().

I've finally dug out the respoinsible change in NEWS.  It turns out this
is the fallout from a new default: a customization named diff-refine has
come into existence and its default is 'font-lock.  Set it to either nil
to never refine automatically or the select the old behaviour with
'navigate and the scrolling works much better now.  It still feels a tad
slower than it were, but that might well be due to some other changes to
how diff-mode fontifies.


Regards,
Achim.
-- 
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

Factory and User Sound Singles for Waldorf Blofeld:
http://Synth.Stromeko.net/Downloads.html#WaldorfSounds