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From: Chong Yidong <cyd@stupidchicken.com>
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Subject: Re: gnus makes emacs lose response
Date: Thu, 07 Sep 2006 16:43:28 -0400
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Stefan Monnier <monnier@iro.umontreal.ca> writes:

>> From the backtrace, it looks Emacs is hanging on the select call.
>> My guess is that the unplugged network cable causes select to wait
>> forever, in spite of the non-NULL timeout argument passed to it.
>> If this is true, it's a bug in the select system call, and there's
>> little Emacs can do to work around it.
>
> That's the for the "hang" part.  But there's another problem which
> is the "C-g not working" part, for which Emacs should be able to do
> something.

Unless the hang in the select system call prevents C-g from calling
interrupt_signal in the first place, which we couldn't possibly do
anything about.