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

[Eli Zaretskii]

> Cc: 21471-done@debbugs.gnu.org
> From: Paul Eggert <eggert@cs.ucla.edu>
> Date: Mon, 14 Sep 2015 09:38:29 -0700
> 
> It is a longstanding double-encoding bug in mailclient-encode-string-as-url, 
> and 
> I installed the attached attempt to fix it.  Please give this a try.  I am 
> boldly marking the bug as fixed.

What was this fix supposed to change?  I still see quoted-printable
encoding of non-ASCII characters in the text pasted from the clipboard
into a mail client.