Subject: Re: bug#30539: 26.0; `char-displayable-p' is much slower in Emacs 25 and 26

From: Eli Zaretskii <[email-masked]>
Date: Wed, 18 Nov 2020 19:21:46 +0200

> From: Stefan Kangas <[email-masked]>
> Date: Wed, 18 Nov 2020 07:35:06 -0800
> Cc: [email-masked]
> 
> > Doing (setq inhibit-compacting-font-caches t) brings back reasonable
> > performance.
> >
> > I can't reproduce on my GNU/Linux box, although that may just be due to
> > different fonts installed.  In particular, char-displayable-p never gave
> > me nil.
> 
> Given this change:
> 
> commit f34f49f35e5c000a6ee070678f43d2ca38b76cad
> Author: Eli Zaretskii <[email-masked]>
> Date:   Sat Sep 7 12:26:08 2019 +0300
> 
>     Set inhibit-compacting-font-caches to t by default on MS-Windows
> 
> Is there anything left to do here, or should this bug be closed?

If the problem doesn't happen on GNU/Linux, we can close this.