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Subject: Re: Pipe behaviour broken with Cygwin 2.2.0-1
To: cygwin AT cygwin DOT com
References: <7C6531D1-F23D-4FD1-8897-7BBAC809CE90 AT mac DOT com> <1815054412 DOT 20150805194907 AT yandex DOT ru> <CA+2x6-+0P=BP+fSWuDv6Ff+LwKJt2jV6mJL7LHNQtGoHT_CvtA AT mail DOT gmail DOT com>
From: Marco Atzeri <marco DOT atzeri AT gmail DOT com>
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Date: Wed, 5 Aug 2015 23:34:55 +0200
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On 05/08/2015 23:09, Nem W Schlecht wrote:
> On Wed, Aug 5, 2015 at 11:49 AM, Andrey Repin <anrdaemon AT yandex DOT ru> wrote:
>
>>
>>> I’ve noticed that the following is broken in Cygwin 2.2.0-1.  It works in Cygwin 2.1.0-1.
>>
>>> yes | head -10
>>
>>> This fails to exit on Cygwin 2.2.0-1.  It correctly exists on Cygwin 2.1.0-1.
>>
>> WJFFM both in mintty and native console.
>> CYGWIN_NT-6.1 daemon2 2.2.0(0.289/5/3) 2015-08-03 12:51 x86_64 Cygwin
>
>
> Does *not* work for me in an 'xterm' launched from the X toolbar icon.
> I see the same error.
>
> I don't see this with other commands, though.  'ls -l | head -10'
> works just fine.
>
>
> Okay, now this is really weird.... I have a hotkey set up in
> AutoHotKey (Alt-Shift-T) to launch a new xterm.  It calls HSTART
> (http://www.ntwind.com/software/hstart.html) with /NOCONSOLE /SHELL
> which then runs a '.bat' file that runs:
>
> c:\cygwin64\bin\bash.exe -i -c "exec /usr/bin/xterm -ls -u8 -display
> :0.0 >/dev/null 2>&1 &"
>
> Any 'xterms' I open with this *work just fine*.  Any I open from the
> X11 taskbar *do not*.  From my system.XWinrc:
>
> menu apps {
>      xterm   exec    "xterm -ls -u8"
>      ...
> }
>
> Usually, I use my hotkey to open windows, so I haven't noticed if/when
> I get this IO error for similar commands.
>
> I opened multiple xterms via both methods and confirmed that my hotkey
> version always works and the menubar version never does.
>
> CYGWIN_NT-6.1 sshhhh 2.2.0(0.289/5/3) 2015-08-03 12:51 x86_64 Cygwin
>

it seems a race issue, on xterm I have

$ yes |head -n 20
y
...
y
yes: standard output: Broken pipe
yes: write error





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