From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Kevin Rodgers Newsgroups: gmane.emacs.devel Subject: Re: vc mode enhancement proposal Date: Sun, 20 Jul 2008 10:11:04 -0600 Message-ID: References: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1216570292 5662 80.91.229.12 (20 Jul 2008 16:11:32 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 20 Jul 2008 16:11:32 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Jul 20 18:12:20 2008 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1KKbWD-0005jg-Im for ged-emacs-devel@m.gmane.org; Sun, 20 Jul 2008 18:12:17 +0200 Original-Received: from localhost ([127.0.0.1]:46641 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KKbVK-0005ET-Gf for ged-emacs-devel@m.gmane.org; Sun, 20 Jul 2008 12:11:22 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1KKbVH-0005EO-EO for emacs-devel@gnu.org; Sun, 20 Jul 2008 12:11:19 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1KKbVG-0005EC-1T for emacs-devel@gnu.org; Sun, 20 Jul 2008 12:11:19 -0400 Original-Received: from [199.232.76.173] (port=57579 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KKbVF-0005E9-U2 for emacs-devel@gnu.org; Sun, 20 Jul 2008 12:11:17 -0400 Original-Received: from main.gmane.org ([80.91.229.2]:33064 helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1KKbVF-0000vM-KP for emacs-devel@gnu.org; Sun, 20 Jul 2008 12:11:17 -0400 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1KKbVC-0001s3-Kl for emacs-devel@gnu.org; Sun, 20 Jul 2008 16:11:14 +0000 Original-Received: from c-67-190-29-163.hsd1.co.comcast.net ([67.190.29.163]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 20 Jul 2008 16:11:14 +0000 Original-Received: from kevin.d.rodgers by c-67-190-29-163.hsd1.co.comcast.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 20 Jul 2008 16:11:14 +0000 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 26 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: c-67-190-29-163.hsd1.co.comcast.net User-Agent: Thunderbird 2.0.0.14 (Macintosh/20080421) In-Reply-To: X-detected-kernel: by monty-python.gnu.org: Linux 2.6, seldom 2.4 (older, 4) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:101018 Archived-At: Neal Becker wrote: > If I edit a version-controlled, hard-linked file, no backup is made (cause > it's version-controlled), and the results is the editing does not break > the hard link. > > Sometimes that's what I want. Other times it's not. > > I don't know how to get emacs to break the hard link. Does this do what you want: (defun vc-backup-by-copying-when-linked () "Set `vc-make-backup-files' according to the visited file. If the visited file has multiple names, set the buffer-local value of `vc-make-backup-files' to t. See `backup-by-copying-when-linked'." (let ((real-file-name (file-chase-links buffer-file-name))) (when (> (file-nlinks real-file-name) 1) (set (make-local-variable 'vc-make-backup-files) t)))) (add-hook 'find-file-hook 'vc-backup-by-copying-when-linked) > What I think we need is to add vc-make-backups-when-linked. -- Kevin Rodgers Denver, Colorado, USA