From mboxrd@z Thu Jan  1 00:00:00 1970
Path: main.gmane.org!not-for-mail
From: Jesper Harder <harder@myrealbox.com>
Newsgroups: gmane.emacs.help
Subject: Re: detect emacs/xemacs in elisp?
Date: Mon, 09 Dec 2002 19:52:48 +0100
Organization: http://purl.org/harder/
Sender: help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org
Message-ID: <m365u36n3z.fsf@defun.localdomain>
References: <49e2e83d.0212091030.7c05b32@posting.google.com>
NNTP-Posting-Host: main.gmane.org
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Trace: main.gmane.org 1039463911 28992 80.91.224.249 (9 Dec 2002 19:58:31 GMT)
X-Complaints-To: usenet@main.gmane.org
NNTP-Posting-Date: Mon, 9 Dec 2002 19:58:31 +0000 (UTC)
Return-path: <help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org>
Original-Received: from monty-python.gnu.org ([199.232.76.173])
	by main.gmane.org with esmtp (Exim 3.35 #1 (Debian))
	id 18LU2u-0007XB-00
	for <gnu-help-gnu-emacs@m.gmane.org>; Mon, 09 Dec 2002 20:58:28 +0100
Original-Received: from localhost ([127.0.0.1] helo=monty-python.gnu.org)
	by monty-python.gnu.org with esmtp (Exim 4.10.13)
	id 18LT8n-0002tz-03
	for gnu-help-gnu-emacs@m.gmane.org; Mon, 09 Dec 2002 14:00:29 -0500
Original-Path: shelby.stanford.edu!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!news.tele.dk!news.tele.dk!small.news.tele.dk!not-for-mail
Original-Newsgroups: gnu.emacs.help
X-Face: ^RrvqCr7c,P$zTR:QED"@h9+BTm-"fjZJJ-3=OU7.)i/K]<.J88}s>'Z_$r;
	<N5ksn~%wJ@2pjF}="tV;FBsdpFarSWA<oYkZsViGf:F^SD-KXhvFxh;~]?)SWm~+u};
	0=x}<vOm&5J+?]yB2d]q4x8\0g7SX
Mail-Copies-To: never
User-Agent: Gnus/5.090008 (Oort Gnus v0.08) Emacs/21.2
 (i386-redhat-linux-gnu)
Cancel-Lock: sha1:ZRGmlF1t0mWQbI3GceTXswp91Rc=
Original-Lines: 24
Original-NNTP-Posting-Host: 195.215.96.213
Original-X-Trace: 1039460134 dtext01.news.tele.dk 47414 195.215.96.213
Original-X-Complaints-To: abuse@post.tele.dk
Original-Xref: shelby.stanford.edu gnu.emacs.help:107898
Original-To: help-gnu-emacs@gnu.org
X-BeenThere: help-gnu-emacs@gnu.org
X-Mailman-Version: 2.1b5
Precedence: list
List-Id: Users list for the GNU Emacs text editor <help-gnu-emacs.gnu.org>
List-Help: <mailto:help-gnu-emacs-request@gnu.org?subject=help>
List-Post: <mailto:help-gnu-emacs@gnu.org>
List-Subscribe: <http://mail.gnu.org/mailman/listinfo/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=subscribe>
List-Archive: <http://mail.gnu.org/pipermail/help-gnu-emacs>
List-Unsubscribe: <http://mail.gnu.org/mailman/listinfo/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=unsubscribe>
Errors-To: help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org
Xref: main.gmane.org gmane.emacs.help:4444
X-Report-Spam: http://spam.gmane.org/gmane.emacs.help:4444

jason_addison@hotmail.com (Jason Addison) writes:

> I have some elisp that works/doesn't work in emacs/xemacs in my
> ".emacs" file. I would like to be able to execute or not execute code
> depending on which type of emacs I'm running. 


(if (featurep 'xemacs)
    (progn
      ;; do Xemacs stuff
      )
  ;; do Emacs stuff
  )

> Another way around this would be to know how to determine if a
> function is defined before calling it. Any idea on how to do this in
> elisp? 

Use `fboundp' to determine if a function is defined.

> Also, how do you determine the version of emacs that is running in
> elisp?

E.g the function `emacs-version'.