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

From: Ken Brown
Subject: bug#14553: 24.3.50; C-g doesn't break inf-loop
Date: Tue, 02 Jul 2013 16:12:41 -0400
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130107 Thunderbird/17.0.2

On 6/4/2013 2:10 AM, Katsumi Yamaoka wrote:

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.


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