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From: Stefan Monnier <monnier@IRO.UMontreal.CA>
To: Vincent Lefevre <vincent@vinc17.net>
Cc: Alain Schneble <a.s@realize.ch>,
	20623@debbugs.gnu.org, Simon Ledergerber <sledergerber@gmx.net>
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: Wed, 08 Aug 2018 10:45:24 -0400	[thread overview]
Message-ID: <jwvh8k4c416.fsf-monnier+emacsbugs@gnu.org> (raw)
In-Reply-To: <20180808094748.GA26509@zira.vinc17.org> (Vincent Lefevre's message of "Wed, 8 Aug 2018 11:47:48 +0200")

> Actually there's the issue that the coding system (in Emacs sense)
> is changed, but also the fact that this change is invisible to the
> user (mainly because the BOM is usually not visible), which makes
> the issue even worse. Basically, this is invisible data corruption.
> Even though only two bytes are removed, this introduces breakage in
> other applications, and it can take much time to the user to find
> the cause.
>
> Emacs should not change the coding system when not needed, and when
> it needs to, it must make sure to have a confirmation from the user.

FWIW, I agree:  I don't think it qualifies as Debian's definition of
"grave", but there is no doubt that it's a bug and that we should
fix it.


        Stefan





  reply	other threads:[~2018-08-08 14:45 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-21 18:50 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 Simon Ledergerber
2015-05-21 19:48 ` Eli Zaretskii
     [not found]   ` <555E44EB.6070604@gmx.net>
2015-05-22  7:11     ` Eli Zaretskii
2015-05-22 13:21       ` Simon Ledergerber
2016-10-12 21:44         ` Alain Schneble
2017-12-04 16:54           ` Glenn Morris
2017-12-04 17:38             ` Stefan Monnier
2017-12-04 20:28               ` Eli Zaretskii
2017-12-04 21:08                 ` Stefan Monnier
2017-12-10 19:17                   ` Eli Zaretskii
2017-12-15  9:08                     ` Eli Zaretskii
2018-08-01 18:07                     ` bug#20623: XML and HTML files with encoding/charset="utf-8" declaration lose " Glenn Morris
2018-08-01 18:41                       ` Eli Zaretskii
2018-08-07 19:14                         ` Glenn Morris
2018-08-11 12:45                     ` bug#20623: XML and HTML files with encoding/charset="utf-8" declaration loose " Stefan Monnier
2018-08-11 13:54                       ` Eli Zaretskii
2018-08-12  0:04                         ` Stefan Monnier
2018-08-12 19:07                           ` Eli Zaretskii
2018-08-08  9:47               ` Vincent Lefevre
2018-08-08 14:45                 ` Stefan Monnier [this message]
2018-08-11  9:15                 ` Eli Zaretskii
2018-08-11 10:13                   ` Vincent Lefevre
2018-08-11 10:45                     ` Eli Zaretskii
2018-08-11 15:41                       ` Vincent Lefevre
2018-08-11 16:27                         ` Eli Zaretskii
2018-08-12  1:34                           ` Vincent Lefevre
2018-08-12  0:11                         ` Stefan Monnier
2018-08-12  0:58                           ` Vincent Lefevre
2015-05-22 15:22   ` Stefan Monnier
2015-05-22 15:26     ` Eli Zaretskii
2015-05-22 21:51       ` Stefan Monnier
2015-05-23  6:44         ` Eli Zaretskii
2015-05-23 17:11           ` Simon Ledergerber
2015-05-23 17:20             ` Eli Zaretskii

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