X-Recipient:	archive-cygwin AT delorie DOT com
X-SWARE-Spam-Status:	No, hits=-1.8 required=5.0 tests=AWL,BAYES_00,SPF_SOFTFAIL
X-Spam-Check-By:	sourceware.org
Message-ID:	<4A8D4A89.9020904@byu.net>
Date:	Thu, 20 Aug 2009 07:07:21 -0600
From:	Eric Blake <ebb9 AT byu DOT net>
User-Agent:	Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.22) Gecko/20090605 Thunderbird/2.0.0.22 Mnenhy/0.7.6.666
MIME-Version:	1.0
To:	cygwin AT cygwin DOT com
Subject:	Re: [ANNOUNCEMENT] Updated: run-1.1.11-1
References:	<200908171705 DOT n7HH5TYe024203 AT StraightRunning DOT com> <4A89A490 DOT 1050108 AT cwilson DOT fastmail DOT fm> <4A8D429A DOT 1070306 AT byu DOT net> <4A8D4B6A DOT 9080706 AT gmail DOT com>
In-Reply-To:	<4A8D4B6A.9080706@gmail.com>
X-IsSubscribed:	yes
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

According to Dave Korn on 8/20/2009 7:11 AM:
> Eric Blake wrote:
> 
>> See this thread on the gnulib list, which claims that you can use this
>> undocumented snippet to decide whether a HANDLE is a console:
>>
>>> #define IsHandleConsole(h) (((long) (h) & 3) == 3)
>> http://lists.gnu.org/archive/html/bug-gnulib/2009-08/msg00065.html
> 
>   I wouldn't rely on that for a microsecond.  The low two bits of a HANDLE are
> pretty free form and could easily be used for other purposes by other types of
> object.  Read the rest of the thread; it's a convention used internally by
> WINE.  MS doesn't necessarily follow suit.

Agreed - Bruno raised this concern, but Paolo committed the change anyway,
so I've asked them to clarify.

At any rate, Bruno also had this suggestion in that thread:

static BOOL
IsHandleConsole(HANDLE h)
{
  DWORD mode;
  return GetConsoleMode (h, &mode);
}

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9 AT byu DOT net
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (Cygwin)
Comment: Public key at home.comcast.net/~ericblake/eblake.gpg
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAkqNSokACgkQ84KuGfSFAYD16wCeKC+9zz3nNUgdu4WDre0B8TW/
UYsAoM8LkOLIPIW9k8L8YqUIyiZ4EZvR
=CyU4
-----END PGP SIGNATURE-----

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -