Subject: bug#14553: 24.3.50; C-g doesn't break inf-loop

From: Ken Brown <[email-masked]>
Date: Tue, 02 Jul 2013 16:12:41 -0400

On 6/4/2013 2:10 AM, Katsumi Yamaoka wrote:
> Hi,
>
> Start Emacs with the -Q option.
> Eval the form: (while t)
>
> Then I get unable to break it.  So is Emacs 24.3.  This may happen
> only on Cygwin, though.  It makes me hard to debug a code suspected
> to have an infinite loop.

I can confirm that this happens on Cygwin but not on GNU/Linux.  This 
may just reflect the fact that Cygwin doesn't have SIGIO.  Maybe someone 
who understands how Emacs handles keyboard input can weigh in on this 
and suggest a workaround.

Ken