From mboxrd@z Thu Jan  1 00:00:00 1970
Path: main.gmane.org!not-for-mail
From: wildernesscat@hotmail.com (Danny Dorfman)
Newsgroups: gmane.emacs.help
Subject: Re: How to automate file-opening (derived filename)?
Date: 8 Jan 2003 22:44:47 -0800
Organization: http://groups.google.com/
Sender: help-gnu-emacs-bounces+gnu-help-gnu-emacs=m.gmane.org@gnu.org
Message-ID: <30055c1f.0301082244.35405451@posting.google.com>
References: <30055c1f.0301070652.62cf0153@posting.google.com>
	<87heckhlfg.fsf@fbigm.here>
NNTP-Posting-Host: main.gmane.org
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
X-Trace: main.gmane.org 1042094753 26166 80.91.224.249 (9 Jan 2003 06:45:53 GMT)
X-Complaints-To: usenet@main.gmane.org
NNTP-Posting-Date: Thu, 9 Jan 2003 06:45:53 +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 18WWRq-0006nr-00
	for <gnu-help-gnu-emacs@m.gmane.org>; Thu, 09 Jan 2003 07:45:50 +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 18WWRp-0001oX-06
	for gnu-help-gnu-emacs@m.gmane.org; Thu, 09 Jan 2003 01:45:49 -0500
Original-Path: shelby.stanford.edu!newsfeed.stanford.edu!postnews1.google.com!not-for-mail
Original-Newsgroups: gnu.emacs.help
Original-Lines: 28
Original-NNTP-Posting-Host: 213.8.87.246
Original-X-Trace: posting.google.com 1042094687 24354 127.0.0.1 (9 Jan 2003 06:44:47
	GMT)
Original-X-Complaints-To: groups-abuse@google.com
Original-NNTP-Posting-Date: 9 Jan 2003 06:44:47 GMT
Original-Xref: shelby.stanford.edu gnu.emacs.help:108761
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:5290
X-Report-Spam: http://spam.gmane.org/gmane.emacs.help:5290

Here is what I got from posting a question at http://www.experts-exchange.com
This actually does the trick! (from user "itonju01")

> This works for me.  You can rename it to whatever you want
> instead of open-x-header.
>
> Hopefully the backslashes aren't munged by the expert-exchange posting system.
>
> Enjoy.
>
>
> (defun open-x-header ()
>  (interactive)
>    (if 
>     ;; replace /a/ with /ZZZ/
>     (string-match "^\\(.*\\)/a/\\(.*\\)\\.c$" buffer-file-name)
>
>     ;; replace find-file-other-window with find-file 
>     ;; or find-file-other-frame if you wish
>     (find-file-other-window
>      (concat (match-string 1 buffer-file-name)
>           "/"
>           "b"  ;; replace with YYY
>           "/"
>           (match-string 2 buffer-file-name)
>           ".h"))
>     (message "No match.")))
>