bug#59715: 28.2; Emacs crashes after ``turkish-case-conversion-enable''

[Eli Zaretskii <eliz@gnu.org>]

> From: YUSUF ALPER ÇIKIŞIR
>  <yusufcikisir@std.iyte.edu.tr>
> Cc: 59715@debbugs.gnu.org
> Date: Sun, 04 Dec 2022 15:46:13 +0300
> 
> That's hilarious.  I mean, I'm not writing "Iosevka".  Why does it need
> to do something like this in the first place?

We usually downcase when we intern strings to produce symbols.

> I had:
> 
> <alias>
>   <family>monospace</family>
>   <prefer>
>     <family>Iosevka Comfy</family>
>   </prefer>
>   <default><family>Iosevka Comfy</family></default>
> </alias>
> 
> in ~/.config/fontconfig/fonts.conf file.  I've changed "Iosevka Comfy"
> with "iosevka comfy".  I had also "Emacs.font: Iosevka Comfy-10" in
> ~/.Xresources file.  I've also changed it with "iosevka comfy-10".
> 
> But unfortunately, it's still the same.

I think there's some caching involved.  Can you do whatever is needed to
force Fontconfig to refresh its caches?  And maybe also restart the system,
in case X also caches stuff?

I will try to think about a cleaner solution to this.  It isn't easy.