Subject: Re: bug#30937: In `comment-region', C-g doesn't work.

From: Eli Zaretskii <[email-masked]>
Date: Sun, 25 Mar 2018 22:14:17 +0300

> From: Andreas Schwab <[email-masked]>
> Cc: Alan Mackenzie <[email-masked]>,  [email-masked]
> Date: Sun, 25 Mar 2018 20:43:15 +0200
> 
> SIGINT only sets quit-flag.

No, sometimes it also calls quit_throw_to_read_char.