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Date: Tue, 10 May 2011 00:27:08 +0200
From: Thomas Wolff <towo AT towo DOT net>
Reply-To: Thomas Wolff <towo AT towo DOT net>
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To: cygwin AT cygwin DOT com
Subject: Re: Who's using "CYGWIN=tty" and why?
References: <20110509161028 DOT GJ27739 AT calimero DOT vinschen DOT de>
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Am 09.05.2011 18:10, schrieb Corinna Vinschen:
> Hi,
>
>
> Chris and I are wondering how many people are using the Windows console
> as local console window in CYGWIN=tty mode and why.
>
> Here's why we ask:
>
> We are both not sure why anybody would use it voluntarily, given that
> it's I/O is extremly slow, compared to using a Windows console window in
> the default CYGWIN=notty mode or, even better, mintty.  Actually, we
> only keep the console tty mode up because it was "always there", 14
> years or so.
>
> So, if you're using a console in tty mode, why are doing that?  Did you
> ever notice that it's much slower?  Did you ever consider to switch to
> mintty or any other terminal emulator instead?  If not, why?  Would
> anybody really *miss* the CYGWIN=tty mode?  If so, why?  What does this
> mode have which isn't covered by notty mode or another terminal
> emulator?
I don't use it but there is one difference that I actually reported 
years ago:
http://sourceware.org/bugzilla/show_bug.cgi?id=513
and I mentioned it again in
http://cygwin.com/ml/cygwin-patches/2009-q4/msg00144.html
and
http://cygwin.com/ml/cygwin-patches/2009-q4/msg00155.html
- later I tried to debug again and saw that with CYGWIN=tty, one 
fhandler_console object drives console I/O whereas with CYGWIN=notty 3 
objects are created (for stdin, stdout, stderr). This is the reason for 
the cursor position response code getting lost because it is pushed into 
the wrong fhandler_console object. I tried to patch it but it got all 
messed up so I didn't post anything then.
______
Thomas

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