Re: Split `simple.el'?

[Eli Zaretskii <eliz@gnu.org>]

> Date: Wed, 4 Apr 2018 16:44:11 -0700 (PDT)
> From: Drew Adams <drew.adams@oracle.com>
> Cc: monnier@iro.umontreal.ca, emacs-devel@gnu.org
> 
> > One possibility is to install the GNU Unifont, which AFAIK supports
> > the entire Unicode range, albeit with glyphs that are in many areas
> > simply ugly.
> 
> In the past you've told people with similar problems to
> install Symbola.  I did that long ago.  Clearly just
> installing it is not enough.
> 
> Now you suggest I add font GNU Unifont.  I just did that -
> downloaded unifont-10.0.07.ttf, unifont_csur-10.0.07.ttf,
> and unifont_csur-10.0.07.ttf from
> http://unifoundry.com/unifont.html, and added them to my
> Fonts folder.
> 
> No change - same 2 minutes to show simple.el.

If you haven't customized your fontset to use Unifont as fallback,
then the result can be expected, and depends to some extent on the
other fonts on your system that are examined before Unifont.

Try this:

  (set-fontset-font "fontset-default" nil "Unifont" nil 'append)

If that doesn't help, that probably means you have some font(s)
installed that cause this slowdown, and need to be deinstalled to fix
that.