Subject: Re: bug#35426: 26.1; emacs slowness linked to one special character

From: Eli Zaretskii <[email-masked]>
Date: Thu, 25 Apr 2019 17:48:16 +0300

> From: DG MAD-eBook <[email-masked]>
> Date: Thu, 25 Apr 2019 16:35:31 +0300
> ScriptPath: [email-masked]
> 
> in any text file, when you paste this character : ∈ (0x2208)the emacs editor
> become very very very slow almost unusable

That generally depends on the font used to display it.  I have Symbola
installed, and I see no slowdown.

I think either installing Symbola or setting
inhibit-compacting-font-caches to a non-nil value should make the
problem go away.