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Date: Sun, 06 Apr 2014 13:30:58 -0400
From: Max Polk <maxpolk AT gmail DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: 1.7.28: Ctrl-C not working reliably
References: <BLU404-EAS2010888D40BD8823CCAC899D96F0 AT phx DOT gbl> <53406AEF DOT 80309 AT cygwin DOT com>
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On 4/5/2014 4:43 PM, Larry Hall (Cygwin) wrote:
> On 4/4/2014 3:35 PM, Ivan Todoroski wrote:
>> 2) Type: ssh blargh  # or any non-existent host
>> 3) Press Ctrl-C immediately after that
>>
>> On my machine, the Ctrl-C doesn't stop SSH from trying to look up the
>> non-existent host, it keeps going until it gives up and times out (which
>
> Right, I noticed no difference in behavior between either.  But ^C worked
> for me, although with a slight (1 second) delay.  Interestingly enough,
> using a qualified name (i.e. blargh.com) made it respond immediately.
>

I speculate that the 1-second delay is the time it takes for *console 
output* to occur.  The control-c is not noticed or acted upon until 
console output occurs.  Since you hit control-c before output occurs, it 
has to wait.  Then the moment the first character begins to print, it is 
interrupted from printing and you see not output.  But secretly it was 
stdout all along that was necessary. Again, I have seen this enough over 
the years for me to suggest this, but have no real knowledge why and 
can't prove it.

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