bug#23628: 25.1.50; wrong saving of unicode characters into kill ring

[Peter Münster]

Hi,

When inserting "€" in a buffer, killing it, than reinserting (yank) it,
I get "?" instead of "€".

This is needed for reproducing:

1.) Call "LC_ALL=en_GB.utf8 emacs -Q"

2.) Evaluate the following line:

    (setq select-active-regions nil)

3.) Type "€"

4.) Kill the "€" (select it and than C-w)

5.) C-y

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND DBUS GSETTINGS NOTIFY
GNUTLS LIBXML2 FREETYPE XFT ZLIB TOOLKIT_SCROLL_BARS GTK2 X11

Important settings:
  value of $LC_ALL: en_GB.utf8
  value of $LC_CTYPE: en_GB.utf8
  value of $XMODIFIERS: @im=local
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

TIA for investigation,
-- 
           Peter