From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#20623: XML and HTML files with encoding/charset="utf-8" declaration loose BOM; Coding system is reset from utf-8-with-signature to utf-8 on save Date: Sat, 23 May 2015 09:44:12 +0300 Message-ID: <83mw0v3i9v.fsf@gnu.org> References: <555E2912.7060509@gmx.net> <83iobl67ao.fsf@gnu.org> <83iobk4oqm.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1432363526 4067 80.91.229.3 (23 May 2015 06:45:26 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 23 May 2015 06:45:26 +0000 (UTC) Cc: sledergerber@gmx.net, 20623@debbugs.gnu.org To: Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat May 23 08:45:15 2015 Return-path: Envelope-to: geb-bug-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 ) id 1Yw3BK-0002KT-Ck for geb-bug-gnu-emacs@m.gmane.org; Sat, 23 May 2015 08:45:14 +0200 Original-Received: from localhost ([::1]:36961 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Yw3BJ-0000we-IF for geb-bug-gnu-emacs@m.gmane.org; Sat, 23 May 2015 02:45:13 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:48744) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Yw3BD-0000vA-S1 for bug-gnu-emacs@gnu.org; Sat, 23 May 2015 02:45:11 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Yw3BA-00072K-6D for bug-gnu-emacs@gnu.org; Sat, 23 May 2015 02:45:07 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:43414) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Yw3BA-00071i-3L for bug-gnu-emacs@gnu.org; Sat, 23 May 2015 02:45:04 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1Yw3B9-0007Yv-KG for bug-gnu-emacs@gnu.org; Sat, 23 May 2015 02:45:03 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 23 May 2015 06:45:03 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 20623 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 20623-submit@debbugs.gnu.org id=B20623.143236346829010 (code B ref 20623); Sat, 23 May 2015 06:45:03 +0000 Original-Received: (at 20623) by debbugs.gnu.org; 23 May 2015 06:44:28 +0000 Original-Received: from localhost ([127.0.0.1]:53389 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Yw3AW-0007Xm-I3 for submit@debbugs.gnu.org; Sat, 23 May 2015 02:44:28 -0400 Original-Received: from mtaout25.012.net.il ([80.179.55.181]:51993) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Yw3AR-0007XT-4S for 20623@debbugs.gnu.org; Sat, 23 May 2015 02:44:22 -0400 Original-Received: from conversion-daemon.mtaout25.012.net.il by mtaout25.012.net.il (HyperSendmail v2007.08) id <0NOS00M00I3X3C00@mtaout25.012.net.il> for 20623@debbugs.gnu.org; Sat, 23 May 2015 09:40:02 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by mtaout25.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NOS00G4NIIP2H60@mtaout25.012.net.il>; Sat, 23 May 2015 09:40:02 +0300 (IDT) In-reply-to: X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:103077 Archived-At: > From: Stefan Monnier > Cc: sledergerber@gmx.net, 20623@debbugs.gnu.org > Date: Fri, 22 May 2015 17:51:07 -0400 > > >> > What would you expect Emacs to do instead? It just obeys the stated > >> > encoding, which says nothing about the BOM. How can Emacs know when > >> > to use utf-8 and when utf-8-with-signature? > >> To the extent that Emacs has seen the BOM when opening the file, it > >> would make sense for Emacs to try and preserve this detail. > > It does. > > While there are cases where it does, this bug report is about a case > where it doesn't, IIUC. AFAIU, that happened because the user has this in ~/.emacs: (setq-default buffer-file-coding-system 'utf-8-dos) IMO, this bad customization should be removed, and then the problem will go away.