bug#21471: 25.0.50; bug report with text from Info has spurious escape chars

[Eli Zaretskii <eliz@gnu.org>]

> Date: Sun, 13 Sep 2015 13:55:42 -0700 (PDT)
> From: Drew Adams <drew.adams@oracle.com>
> Cc: 21471@debbugs.gnu.org
> 
> > This bug is not a regression, as I get similar behavior with Emacs 24.5 on
> > Ubuntu 15.04 (email client Thunderbird 38.2.0) as follows:
> ...
> > The mail that's sent includes strings like this:
> > 
> > Copyright =C2=A9 1990=E2=80=931996, 1998=E2=80=932014 Free Software Foun=
> > dation, Inc.
> > 
> > even though it's marked "Content-type: text/plain; charset=utf-8;
> > format=flowed".  This problem occurs with all non-ASCII characters, not
> > merely with curved quotes.
> 
> OK, so it's not a regression, in that Unicode chars have
> apparently long been copied and pasted incorrectly in this
> context.

Not "Unicode", any non-ASCII characters.

> But Unicode chars were not used all over the place previously,
> which makes it a regression of sorts, in observed behavior.
> This will bite lots more users a lot more, even if the problem
> was potentially present previously as well.
> 
> It's a bad bug, interfering considerably with usability,
> regardless of whether we want to call it a regression.

You can always copy/paste manually, replacing the text that Emacs put
in the clipboard for you, if you care.

Or you can make the text an attachment.

And please recall that the instructions for writing the bug report
explicitly asked for avoiding non-ASCII characters.