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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