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

[Eli Zaretskii]

> From: YUSUF ALPER ÇIKIŞIR
>  <yusufcikisir@std.iyte.edu.tr>
> Cc: 59715@debbugs.gnu.org
> Date: Sun, 04 Dec 2022 14:44:19 +0300
> 
> (gdb) frame 3
> #3  0x0000000000525967 in realize_gui_face (cache=0xd934a0, 
> attrs=0x7fffffff9fe0) at xfaces.c:5941
> 5941                emacs_abort ();
> (gdb) p default_face
> $1 = (struct face *) 0x0
> (gdb) p f->output_data.x->fontset
> $2 = 2

Thanks.  I think I know what happens.  It's the problem with down-casing
Iosevka in your locale, which produces "ıosevka", with the first letter
being dotless i.  And that down-cased name doesn't match anything.

Hmm...