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From:	Ken Brown <kbrown AT cornell DOT edu>
To:	"cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject:	Re: Regression (last snapshot)
Date:	Thu, 1 Aug 2019 12:19:55 +0000
Message-ID:	<31cbcb8f-009e-e470-27aa-a8d0ef4de4fb@cornell.edu>
References:	<20190722164509 DOT GG21169 AT calimero DOT vinschen DOT de> <eb8007691b20df0eb8032ca3d2fa445f AT smtp-cloud8 DOT xs4all DOT net> <b3b04db5-7f03-8281-f376-6cd10207ec01 AT cornell DOT edu> <4b59209a91e8384ec000e2724696791c AT smtp-cloud7 DOT xs4all DOT net> <935d8ce5-fd5c-3010-4664-bb2dc9b7ca2f AT cornell DOT edu> <20190729084552 DOT GL11632 AT calimero DOT vinschen DOT de> <eea273ca-f190-c91a-7892-9407bfcf4326 AT cornell DOT edu> <20190729134700 DOT GO11632 AT calimero DOT vinschen DOT de> <ced2750a-0a52-1396-b6c1-f4228116bde7 AT cornell DOT edu> <20190729152327 DOT GQ11632 AT calimero DOT vinschen DOT de> <20190729154049 DOT GR11632 AT calimero DOT vinschen DOT de> <c5d01965-80b9-cece-54d2-f7462f84c0a2 AT cornell DOT edu> <8e57d4da-722d-1b9a-bd28-5f96ed182f6a AT cornell DOT edu> <a089b97cfd868904baa6dc1d5d474354 AT smtp-cloud7 DOT xs4all DOT net>
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On 8/1/2019 6:03 AM, Houder wrote:
> On Wed, 31 Jul 2019 15:53:27, Ken Brown  wrote:
> 
>> I've made some progress. It turns out that the problem only occurs in terminals
>> launched from the xwin-xdg-menu tray icon.  I can even launch a mintty window
>> from that icon (System Tools -> Cygwin Terminal) and I'll see the problem.  On
>> the other hand, I can launch an xterm without using that icon (e.g., 'DISPLAY=:0
>> xterm -l&' from a mintty window) and I won't see the problem.
> 
> No one confirmed your problem, as described in your initial posting. Did nobody
> care, or did the problem only exist at your place?
> 
> I became curious ...
> 
> I do not use X! (on Cygwin).
> 
> Therefore I created a separate (basic) Cygwin installation, where I added xinit,
> xorg-server and xterm only!
> 
> Next I started xterm as follows:
> 
>      64-++ startx /usr/bin/xterm -geometry 140x50+530+180 -- -rootless
> 
> The problem occured when using cywin1.dll 0712 (as expected), but not when using
> cygwin1.dll 3.0.7 or cygwin1.dll 0722.
> 
> I concluded, that your problem does not occur w/ a "basic" X configuration.

As I said, the problem only occurs in terminals started from the xwin-xdg-menu. 
That isn't what you did.  Here are the reproduction instructions again:

1. Start the X server using the XWin Server shortcut in the Start Menu (look 
under Cygwin-X).

2. Locate the xwin-xdg-menu tray icon.  It looks like a black C with a green X 
inside.  If you hover over it, you'll see "X applications menu on :0".  Click on 
that icon, hover over System Tools, and select one of the terminals offered.

3. Try your 'ls' command or some variation of it in that terminal.

On my system I see the broken pipe error from grep half of the time or more if 
use your original test 'ls -lL <(grep bash .bashrc)'.  If I use the simpler 'ls 
<(grep bash .bashrc)', I see the error about 98% of the time.  And if I use the 
even simpler 'echo <(grep bash .bashrc)', I see the error 100% of the time.

Ken

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