Subject: Re: bug#30291: Acknowledgement (25.2; "ubuntu mono font" and "query-replace" (twice) hangs emacs)

From: Eli Zaretskii <[email-masked]>
Date: Wed, 31 Jan 2018 17:03:23 +0200

> From: Bill Evans <[email-masked]>
> Date: Tue, 30 Jan 2018 21:16:41 -0800
> 
> Changing `query-replace-from-to-separator` to something trivial such as 
> " -> " also fixes the problem. This suggests that there is (1) likely 
> something "different" with Ubuntu Mono's interpretation of the 
> right-arrow character, and (2) emacs is not dealing well with that 
> different-ness.
> 
> (I recently upgraded to "GNU Emacs 25.3.1 (x86_64-w64-mingw32) of 
> 2017-09-12", the bug behaves the same. It originally became a problem 
> when I upgraded from emacs24 to emacs25.)

Does it help to set use-default-font-for-symbols to the nil value
(without customizing query-replace-from-to-separator)?