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

[Aaron Jensen]

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?

So far so good. I'll try it out for a few more days and see if it
stays fast. The patch I'm trying is attached if anyone else wants to
give it a go or check to ensure I didn't do something wrong in it.

0001-Test.patch
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