From mboxrd@z Thu Jan  1 00:00:00 1970
Path: main.gmane.org!not-for-mail
From: "Stefan Monnier <foo@acm.com>"
	<monnier+gnu.emacs.help/news/@flint.cs.yale.edu>
Newsgroups: gmane.emacs.help
Subject: Re: Style in elisp: how to show a flag value in the modeline?
Date: 20 Feb 2003 15:45:54 -0500
Organization: Yale University
Sender: help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org
Message-ID: <5lbs16smt9.fsf@rum.cs.yale.edu>
References: <87of579t70.fsf@noos.fr>
NNTP-Posting-Host: main.gmane.org
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit
X-Trace: main.gmane.org 1045774707 13608 80.91.224.249 (20 Feb 2003 20:58:27 GMT)
X-Complaints-To: usenet@main.gmane.org
NNTP-Posting-Date: Thu, 20 Feb 2003 20:58:27 +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 18lxlv-0003X3-00
	for <gnu-help-gnu-emacs@m.gmane.org>; Thu, 20 Feb 2003 21:58:23 +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 18lxjR-0002Jq-0B
	for gnu-help-gnu-emacs@m.gmane.org; Thu, 20 Feb 2003 15:55:49 -0500
Original-Path: shelby.stanford.edu!newsfeed.stanford.edu!logbridge.uoregon.edu!news.ycc.yale.edu!rum.cs.yale.edu!rum.cs.yale.edu
Original-Newsgroups: gnu.emacs.help
Original-Lines: 20
Original-NNTP-Posting-Host: rum.cs.yale.edu
User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50
X-Original-NNTP-Posting-Host: rum.cs.yale.edu
X-Original-Trace: 20 Feb 2003 15:45:54 -0500, rum.cs.yale.edu
Original-Xref: shelby.stanford.edu gnu.emacs.help:110444
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:6946
X-Report-Spam: http://spam.gmane.org/gmane.emacs.help:6946

>>>>> "FF" == François Fleuret <francois.fleuret@noos.fr> writes:
> What is the good way to show in the modeline the value of a boolean of
> a flag associated to a major-mode ? The current solution I came with
> is to change the value of `mode-name'. But I have the feeling that
> should be done another way. Any advice ?

I think a standard way to do it is

  (set (make-local-variable 'mode-line-process)
       '("" (var-1 " var-1 is ON" " var-1 is OFF") var-2))

this would display the boolean status of var-1 and the current value
of var-2 right after the major-mode and before the minor modes.
At least that's what I use in PCL-CVS and it works well.
The value of mode-line-process (and of var-2 as well) is interpreted in
the same way as mode-line-format (except maybe that % escape thingies
don't work, IIRC).


        Stefan