From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Kevin Rodgers Newsgroups: gmane.emacs.help Subject: Re: emacs switch similar to vi's -R, or view equivalent? Date: Wed, 23 Aug 2006 08:47:35 -0600 Organization: IHS Message-ID: References: <44EB2081.8060100@an3e.org> NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Trace: sea.gmane.org 1156344557 6555 80.91.229.2 (23 Aug 2006 14:49:17 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Wed, 23 Aug 2006 14:49:17 +0000 (UTC) Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Wed Aug 23 16:49:11 2006 Return-path: 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 1GFu2Y-0004GP-Be for geh-help-gnu-emacs@m.gmane.org; Wed, 23 Aug 2006 16:49:10 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1GFu2X-0003n9-Sa for geh-help-gnu-emacs@m.gmane.org; Wed, 23 Aug 2006 10:49:09 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1GFu2I-0003mV-03 for help-gnu-emacs@gnu.org; Wed, 23 Aug 2006 10:48:54 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1GFu2G-0003mB-Gj for help-gnu-emacs@gnu.org; Wed, 23 Aug 2006 10:48:53 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1GFu2G-0003m7-9h for help-gnu-emacs@gnu.org; Wed, 23 Aug 2006 10:48:52 -0400 Original-Received: from [80.91.229.2] (helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA:32) (Exim 4.52) id 1GFuA6-0003pg-Rx for help-gnu-emacs@gnu.org; Wed, 23 Aug 2006 10:56:59 -0400 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1GFu1x-00046w-TF for help-gnu-emacs@gnu.org; Wed, 23 Aug 2006 16:48:34 +0200 Original-Received: from 207.167.42.206 ([207.167.42.206]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 23 Aug 2006 16:48:33 +0200 Original-Received: from ihs_4664 by 207.167.42.206 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 23 Aug 2006 16:48:33 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-To: help-gnu-emacs@gnu.org Original-Lines: 26 Original-X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: 207.167.42.206 User-Agent: Thunderbird 1.5.0.5 (Windows/20060719) In-Reply-To: <44EB2081.8060100@an3e.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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-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:36874 Archived-At: Andrew B. Young wrote: > Is there an emacs switch similar to vi's -R, or view equivalent? > > I use emacs regularly but find "view this_file" very comforting, > e.g., sudo view /etc/aliases. This forces me to ! the write as > an extra measure of safety. > > My guess is that I need a special init file that gets loaded via an > alias, i.e., "ev this_file". Here's a gem from 1997 (http://groups.google.com/group/gnu.emacs.help/msg/46410ee284d11cc0): (setq command-switch-alist (cons '("--read-only" . find-file-read-only-command-line-arg) ; "-R" command-switch-alist)) (defun find-file-read-only-command-line-arg (switch) "Visit next command line argument (after SWITCH) as a read-only file." ;; (prog1 (car x) (setq x (cdr x))) == (pop x): (find-file-read-only (prog1 (car command-line-args-left) (setq command-line-args-left (cdr command-line-args-left))))) -- Kevin