From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.org!not-for-mail
From: Glenn Morris <rgm+news@stanford.edu>
Newsgroups: gmane.emacs.help
Subject: Re: check whether emacs session is running under local X server
Date: Wed, 27 Sep 2006 18:10:23 -0700
Organization: None
Message-ID: <icodt0okxs.fsf@xoc2.stanford.EDU>
References: <m38xk5yqie.fsf@tfkp07.physik.uni-erlangen.de>
NNTP-Posting-Host: main.gmane.org
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Trace: sea.gmane.org 1159407655 23808 80.91.229.2 (28 Sep 2006 01:40:55 GMT)
X-Complaints-To: usenet@sea.gmane.org
NNTP-Posting-Date: Thu, 28 Sep 2006 01:40:55 +0000 (UTC)
Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu Sep 28 03:40:45 2006
Return-path: <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>
Envelope-to: geh-help-gnu-emacs@m.gmane.org
Original-Received: from lists.gnu.org ([199.232.76.165])
	by ciao.gmane.org with esmtp (Exim 4.43)
	id 1GSkt5-0004ch-Pr
	for geh-help-gnu-emacs@m.gmane.org; Thu, 28 Sep 2006 03:40:31 +0200
Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43)
	id 1GSkt5-0005V2-5V
	for geh-help-gnu-emacs@m.gmane.org; Wed, 27 Sep 2006 21:40:31 -0400
Original-Path: shelby.stanford.edu!not-for-mail
Original-Newsgroups: gnu.emacs.help
Original-Lines: 11
Original-NNTP-Posting-Host: xoc2.stanford.edu
Original-X-Trace: news.Stanford.EDU 1159405823 29034 171.64.56.22 (28 Sep 2006 01:10:24
	GMT)
Original-X-Complaints-To: news@news.stanford.edu
X-Spook: grenades terminate Manuel Rodriguez satellite phone bomb
X-Ran: *DVXLb3oKjAvZ@^$z2SI-DbPsh5{;u-E:c|eF1UqzviV8IY3Z.[fQ?8E)LACBNg\2eCXux
X-Hue: red
X-Attribution: GM
Mail-Copies-To: nobody
User-Agent: Gnus (www.gnus.org), GNU Emacs (www.gnu.org/software/emacs/)
Cancel-Lock: sha1:F6VN2de31nLxtoOHqEing6xuzhc=
Original-Xref: shelby.stanford.edu gnu.emacs.help:142069
Original-To: help-gnu-emacs@gnu.org
X-BeenThere: help-gnu-emacs@gnu.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Users list for the GNU Emacs text editor <help-gnu-emacs.gnu.org>
List-Unsubscribe: <http://lists.gnu.org/mailman/listinfo/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/pipermail/help-gnu-emacs>
List-Post: <mailto:help-gnu-emacs@gnu.org>
List-Help: <mailto:help-gnu-emacs-request@gnu.org?subject=help>
List-Subscribe: <http://lists.gnu.org/mailman/listinfo/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=subscribe>
Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org
Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org
Xref: news.gmane.org gmane.emacs.help:37689
Archived-At: <http://permalink.gmane.org/gmane.emacs.help/37689>

Roland Winkler wrote:

> In my .emacs I would like to distinguish between an emacs session
> running under the local X server and an emacs session running under
> a remote X server. I expect that the $DISPLAY variable can do the
> job. But I am not familiar with the details.
> (Once upon a time I set $DISPLAY manually. Nowadays I use ssh which
> handles $DISPLAY for me, but I do not understand the scheme it uses.)

I just check whether the SSH_CLIENT environment variable is set or
not.