From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail
From: "Alfred M. Szmidt" <ams@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: copy-files, overwriting files, and random ideas
Date: Tue, 23 Aug 2022 15:55:43 -0400
Message-ID: <E1oQZzz-0005jl-Qg@fencepost.gnu.org>
Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214";
	logging-data="7712"; mail-complaints-to="usenet@ciao.gmane.io"
To: emacs-devel@gnu.org
Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Aug 23 21:57:14 2022
Return-path: <emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org>
Envelope-to: ged-emacs-devel@m.gmane-mx.org
Original-Received: from lists.gnu.org ([209.51.188.17])
	by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.92)
	(envelope-from <emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org>)
	id 1oQa1R-0001uF-Om
	for ged-emacs-devel@m.gmane-mx.org; Tue, 23 Aug 2022 21:57:14 +0200
Original-Received: from localhost ([::1]:52212 helo=lists1p.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.90_1)
	(envelope-from <emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org>)
	id 1oQa1Q-00013p-Hw
	for ged-emacs-devel@m.gmane-mx.org; Tue, 23 Aug 2022 15:57:12 -0400
Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:36250)
 by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <ams@gnu.org>) id 1oQa01-0000FK-N0
 for emacs-devel@gnu.org; Tue, 23 Aug 2022 15:55:45 -0400
Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:59008)
 by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <ams@gnu.org>) id 1oQa00-0008Qj-7P
 for emacs-devel@gnu.org; Tue, 23 Aug 2022 15:55:45 -0400
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org;
 s=fencepost-gnu-org; h=Date:Subject:To:From:mime-version:in-reply-to:
 references; bh=9Gejgl0BGWX7+5njmy27jEIvSIC37HEV5dlpA8pjlIg=; b=VRkcJclvI+rSoc
 8K0NoKgk4Fg6GJ6ARfynJsQx9kdUjeYwMuk4x0B+cJt530YQ6TIWkUg4wReeD/4Lp51hjGxES/9+i
 9y9abvgzRchf+OP63qrfct4hOwE9zK/w8PXX9kA5lEZyVxxx1UpSe3u6b04SbKeeum3IVOJlJfWMT
 oI7SzvBiIFgvunNYFzFUGql2EOInKFV9J13mxdklr2AMx9hBQ3sUbd/r6z8g3smntiYoPSQfhHlZC
 x9wsSDDURzPBFT1wruGIVY/0pMIBbRhvxXf4VC74SvahzJjIzwzrUclm/h7v/aJp1uUXOzDGpCyOB
 0+fOxzMKXHMEO1VrAJZg==;
Original-Received: from ams by fencepost.gnu.org with local (Exim 4.90_1)
 (envelope-from <ams@gnu.org>) id 1oQZzz-0005jl-Qg
 for emacs-devel@gnu.org; Tue, 23 Aug 2022 15:55:43 -0400
X-BeenThere: emacs-devel@gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: "Emacs development discussions." <emacs-devel.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/emacs-devel>,
 <mailto:emacs-devel-request@gnu.org?subject=unsubscribe>
List-Archive: <https://lists.gnu.org/archive/html/emacs-devel>
List-Post: <mailto:emacs-devel@gnu.org>
List-Help: <mailto:emacs-devel-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/emacs-devel>,
 <mailto:emacs-devel-request@gnu.org?subject=subscribe>
Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org
Original-Sender: "Emacs-devel"
 <emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org>
Xref: news.gmane.io gmane.emacs.devel:293919
Archived-At: <http://permalink.gmane.org/gmane.emacs.devel/293919>

It would be really nice if when copying a file, and the destination
exists, that you could somehow get Emacs to copy the new file beside
the old one, and/or copy away the old one as a backup, and then
replace it.

It's specially useful if you copy multiple files in dired, since the
only option is to abort the whole thing.


Being able to diff the files would also be really really nice; if
text-files do something with diff-mode and if else, just a CRC, and
output from stat or similar.