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Date: Thu, 8 Jan 2009 12:20:23 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: cmd.exe from Cygwin
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On Jan  8 16:03, Jeenu V wrote:
> On Thu, Jan 8, 2009 at 6:32 AM, Jeenu V <jeenuv AT gmail DOT com> wrote:
> > On Wed, Jan 7, 2009 at 9:22 PM, Christopher Faylor
> > <cgf-use-the-mailinglist-please AT cygwin DOT com> wrote:
> >
> >> screen uses ptys.  ptys are equivalent to CYGWIN=tty.
> >>
> >> We really don't guarantee that pure Windows applications will work with
> >> ptys.
> >
> > Hm... looks like I've to live without cmd.exe from screen.
> > Anyway,.thank you guys for the support and help.
> >
> 
> And can this be guaranteed in future versions of Cygwin? Or is it
> something constrained by screen?

It's a constraint of the native Windows applications.  There's no
PTY concept in Windows so Cygwin uses pipes to emulate the behaviour.
Cygwin applications know when they are running in a pty, native apps
don't and behave differently if their stdio descriptors are connected
to pipes.

Bottom line: We just *can't* gurantee ...


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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