From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Don't complain about changed file when it hasn't changed Date: Tue, 30 Aug 2016 11:00:19 -0400 Message-ID: References: <031d3e59-eaa3-df7a-492d-2a2d3c726094@gmail.com> <87fupmfw9e.fsf@gmx.de> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1472569096 3162 195.159.176.226 (30 Aug 2016 14:58:16 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 30 Aug 2016 14:58:16 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Aug 30 16:58:10 2016 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bekUK-0000EX-R3 for ged-emacs-devel@m.gmane.org; Tue, 30 Aug 2016 16:58:08 +0200 Original-Received: from localhost ([::1]:49537 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bekUI-0001Vz-7D for ged-emacs-devel@m.gmane.org; Tue, 30 Aug 2016 10:58:06 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:52275) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bekTl-0001Vi-TA for emacs-devel@gnu.org; Tue, 30 Aug 2016 10:57:34 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bekTh-0007tR-Oe for emacs-devel@gnu.org; Tue, 30 Aug 2016 10:57:32 -0400 Original-Received: from [195.159.176.226] (port=45742 helo=blaine.gmane.org) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bekTh-0007ss-He for emacs-devel@gnu.org; Tue, 30 Aug 2016 10:57:29 -0400 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1bekTa-00053E-CJ for emacs-devel@gnu.org; Tue, 30 Aug 2016 16:57:22 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 10 Original-X-Complaints-To: usenet@blaine.gmane.org Cancel-Lock: sha1:YlWi0YfWvlWMSWfvD+GO0KFZe7I= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 195.159.176.226 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:206936 Archived-At: > We don't have crc32 on lisp level (this is what the cksum program > uses). But there is md5, maybe it could be used instead. I'm not so > familiar with hash algorithms, so I don't know whether this is good > enough. crc32 is weak anyway. A weaker check that *is* easily available is the file's size. Stefan