From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.org!not-for-mail
From: Stefan Monnier <monnier@iro.umontreal.ca>
Newsgroups: gmane.emacs.help
Subject: Re: is diff-fixup-modifs supposed to work on regular diff?
Date: Sat, 10 Aug 2013 22:58:55 -0400
Organization: A noiseless patient Spider
Message-ID: <jwva9kpkk84.fsf-monnier+gnu.emacs.help@gnu.org>
References: <mailman.2990.1376162656.12400.help-gnu-emacs@gnu.org>
NNTP-Posting-Host: plane.gmane.org
Mime-Version: 1.0
Content-Type: text/plain
X-Trace: ger.gmane.org 1376190019 29687 80.91.229.3 (11 Aug 2013 03:00:19 GMT)
X-Complaints-To: usenet@ger.gmane.org
NNTP-Posting-Date: Sun, 11 Aug 2013 03:00:19 +0000 (UTC)
To: help-gnu-emacs@gnu.org
Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sun Aug 11 05:00:22 2013
Return-path: <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>
Envelope-to: geh-help-gnu-emacs@m.gmane.org
Original-Received: from lists.gnu.org ([208.118.235.17])
	by plane.gmane.org with esmtp (Exim 4.69)
	(envelope-from <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>)
	id 1V8LtF-0000oJ-Qx
	for geh-help-gnu-emacs@m.gmane.org; Sun, 11 Aug 2013 05:00:21 +0200
Original-Received: from localhost ([::1]:33502 helo=lists.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>)
	id 1V8LtF-0007d2-Fo
	for geh-help-gnu-emacs@m.gmane.org; Sat, 10 Aug 2013 23:00:21 -0400
Original-Path: usenet.stanford.edu!news.kjsl.com!feeder.erje.net!eu.feeder.erje.net!eternal-september.org!feeder.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
Original-Newsgroups: gnu.emacs.help
Original-Lines: 14
Injection-Info: mx05.eternal-september.org;
	posting-host="bef50a77c8482b3cee00ee60292ca3f1"; 
	logging-data="14298"; mail-complaints-to="abuse@eternal-september.org";
	posting-account="U2FsdGVkX18wOnKrMlWV4SWnJaE7jtOa"
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux)
Cancel-Lock: sha1:0DaYe3z4yqmTjLBzSWKoE50a7OA=
	sha1:ptU5jeztpI7TfVCwEf763d/7Uxo=
Original-Xref: usenet.stanford.edu gnu.emacs.help:200551
X-BeenThere: help-gnu-emacs@gnu.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: Users list for the GNU Emacs text editor <help-gnu-emacs.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/help-gnu-emacs>
List-Post: <mailto:help-gnu-emacs@gnu.org>
List-Help: <mailto:help-gnu-emacs-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=subscribe>
Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org
Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org
Xref: news.gmane.org gmane.emacs.help:92817
Archived-At: <http://permalink.gmane.org/gmane.emacs.help/92817>

> I have been trying to edit diffs, which are in regular <> style, and
> run diff-fixup-modifs.  My goal is to programmatically get rid of
> empty hunks and to renumber edited hunks.

> For this particular purpose, which is not a one-off that can be fixed
> manually but an ongoing need, I cannot use the otherwise superior
> unified or context diff.

diff-fixup-modifs (and most of diff-mode's editing functions such as
the killing of hunks) only works for context diffs, because it does not
preserve line numbers precisely.


        Stefan