Subject: Re: bug#39865: 28.0.50; Emacs crash

From: Eli Zaretskii <[email-masked]>
Date: Fri, 06 Mar 2020 09:18:31 +0200

> From: Vinicius José Latorre <[email-masked]>
> Date: Thu, 5 Mar 2020 19:21:22 -0300
> Cc: [email-masked]
> 
> I found this line in my ~/.emacs that causes the crash:
> 
> (push '(font-backend xft x) default-frame-alist)

OK, then the crash is a known problem: you cannot change the font
backend once the session started, you can only do that in X resources.
Previously, XFT was your original backend, but now it's HarfBuzz.

Why are you doing this?  What happens/doesn't work if you remove this
line?