GNU bug report logs - #25645
26.0.50; message.el: Fcc+handler results in write coding issues in emacs 26

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From: Yuri D'Elia <wavexx <at> thregr.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 25645 <at> debbugs.gnu.org, Lars Ingebrigtsen <larsi <at> gnus.org>
Subject: bug#25645: 26.0.50; message.el: Fcc+handler results in write coding issues in emacs 26
Date: Tue, 07 Feb 2017 18:31:15 +0100

On Tue, Feb 07 2017, Eli Zaretskii wrote:
> If you get raw bytes in the buffer, the culprit is in the code which
> inserted those bytes, or read them from some file.

Yes, the content of the buffer is generated by
message-encode-message-body in message.el itself.

You only need to insert an unicode letter in the message's buffer to
trigger the issue when recoding to qp-utf8.

I wrote to Lars prior to filing this report (cc-ed).

> This is expected when there are raw bytes in the buffer.  The problem
> is elsewhere.

Since the fcc-handler is expected to do something with the buffer (write
it out), I expect message.el to preset the buffer coding system if the
buffer becomes unibyte in nature.

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