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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: Sat, 3 Aug 2019 13:14:03 +0000
Message-ID: <7851c2e6-7e83-1f50-f22f-1346b20c4130@cornell.edu>
References: <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> <0a09679b-1a0f-613b-04c8-1a63da8a00c2 AT cornell DOT edu> <33aead20-540c-ee3b-0d38-ff053fbac040 AT dronecode DOT org DOT uk> <12269538-c387-1f1e-ab5a-b36b60d09937 AT cornell DOT edu> <a61264b5-80da-52fc-7093-8e8d9a8ace33 AT redhat DOT com> <20190801160440 DOT GC11632 AT calimero DOT vinschen DOT de> <19e73527-cb9a-a106-a57a-2895b8a520c9 AT cornell DOT edu> <e922144a-1f02-9398-4223-dbf76c69231f AT cornell DOT edu> <b4d57d88-3ec4-939f-c591-e50aaef607f3 AT cornell DOT edu> <5f4a0400-a173-1948-6048-69ba54df2571 AT SystematicSw DOT ab DOT ca> <400eebe3-3ba9-5448-85a8-92e6e0dfdf0c AT cornell DOT edu> <1d2c03d5-8534-405e-b150-c899508712fc AT redhat DOT com> <93bdffad-7a57-415d-c7db-94c17acb417e AT SystematicSw DOT ab DOT ca>
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On 8/2/2019 11:50 PM, Brian Inglis wrote:
> Looking at mintty wiki, it mentions pipe handling, so may reset the signal
> action,

It doesn't.  Look at the mintty source.

> and it mentions that Cygwin emulates ptys using pipes,

Cygwin pty emulation uses Windows named pipes.

> Could Cygwin pty emulation with pipes, under an xterm terminal that perhaps does
> not reset signal actions, be causing or having problems under some
> circumstances, while running external commands in sub-shells without normal
> SIGPIPE signal actions?

I don't see any connection between Cygwin's pty emulation and an application's 
handling of SIGPIPE.

Ken

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