bug#24152: 24.5; Spurious chars when bug report inserted in mailclient msg

[Eli Zaretskii]

> Date: Thu, 4 Aug 2016 07:25:24 -0700 (PDT)
> From: Drew Adams <drew.adams@oracle.com>
> 
> I selected a sentence from (emacs) `Special Isearch' with the mouse, and
> without using `M-w'.  I yanked it into a bug-report buffer (with `C-y').
> I used C-c C-c and then pasted the copied text into my mail client empty
> message. This is what I got:
> 
> Hence, =A1=AEfoo bar=A1=AF matches =A1=AEfoo bar=A1=AF, =A1=AEfoo bar=A1=AF=
> , =A1=AEfoo bar=A1=AF,
> and so on (but not =A1=AEfoobar=A1=AF).

They are not spurious characters, they are quoted-printable encodings
of UTF-8 sequences.

You already reported this in the past, and we had an enjoyable
discussion about this.