GNU bug report logs - #35766
emacs saves utf-16 le xml files as utf-16 be

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From: J S <jszabo_98 <at> hotmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: "35766 <at> debbugs.gnu.org" <35766 <at> debbugs.gnu.org>
Subject: bug#35766: emacs saves utf-16 le xml files as utf-16 be
Date: Fri, 17 May 2019 11:26:14 +0000

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It would change color in emacs if encoding="UTF16-LE" were invalid.  It's hard to find the docs for it.  UTF-16LE is listed here:  http://help.eclipse.org/kepler/index.jsp?topic=%2Forg.eclipse.wst.xmleditor.doc.user%2Ftopics%2Fcxmlenc.html


________________________________
From: Eli Zaretskii <eliz <at> gnu.org>
Sent: Friday, May 17, 2019 9:26 AM
To: J S
Cc: 35766 <at> debbugs.gnu.org
Subject: Re: bug#35766: emacs saves utf-16 le xml files as utf-16 be

> From: J S <jszabo_98 <at> hotmail.com>
> CC: "35766 <at> debbugs.gnu.org" <35766 <at> debbugs.gnu.org>
> Date: Thu, 16 May 2019 20:57:34 +0000
>
> I should say that I'm using emacs for windows.  And it's preferring saving in big endian to little endian when
> this is the tag:
>
> <?xml version="1.0" encoding="UTF-16"?>

This is the default, yes.  "C-h C utf-16 RET" says:

  UTF-16 (detect endian on decoding, use big endian on encoding with BOM).
                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
If you want to encode in UTF-16LE, you need to tell Emacs to do this
explicitly:

  C-x RET c utf-16le-with-signature RET C-x C-s

> Try saving this xml file and opening it again:
>
> <?xml version="1.0" encoding="UTF-16LE"?>

AFAIU, encoding="UTF-16LE" is invalid in XML.  If you see this
documented somewhere in XML docs, please tell me where it is
described.

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