bug#31853: 27.0.50; binding case-fold-search is slow when there are many buffers

[Eli Zaretskii]

> From: Aaron Jensen <aaronjensen@gmail.com>
> Date: Fri, 22 Jun 2018 22:23:09 -0700
> Cc: 31853@debbugs.gnu.org
> 
> > > > On Sat, Jun 16, 2018 at 12:53 AM Eli Zaretskii <eliz@gnu.org> wrote:
> > > > > In https://debbugs.gnu.org/cgi/bugreport.cgi?bug=18522#201 I proposed
> > > > > a change to set-default that would use FOR_EACH_LIVE_BUFFER.  Could
> > > > > you see if that change helps in your case?
> > >
> > > With 148 live buffers and 6 hours of uptime, I'm up to about 23
> > > microseconds. Still a far cry from 1ms. I'll keep testing.
> >
> > Thanks.
> 
> I haven't noticed any slowdown yet. It seems to be an improvement. If
> you're good with the patch and could provide me with some text to
> write in the commit message (I roughly understand what it does, but I
> don't know anything about the other ramifications) I can send another
> patch. Otherwise, please feel free to use the patch and commit w/ your
> own message/name.

There's no rush.  Let's give this another week, and I will push the
change if no problems come up by that date.

Thanks.