bug#28350: enriched.el code execution

[Eli Zaretskii]

> From: Paul Eggert <eggert@cs.ucla.edu>
> Date: Sun, 10 Sep 2017 14:46:59 -0700
> Cc: larsi@gnus.org, 28350@debbugs.gnu.org
> 
> >    (eval-after-load "enriched"
> >      '(defun enriched-decode-display-prop (start end &optional param)
> >         (list start end)))
> > 
> > But it may not work in Emacs earlier than 23 (I can't test it).
> 
> It should work, since eval-after-load predates Emacs 19.29.  Though it 
> assumes 
> that x-display is the only problem here.

x-display _is_ the only problem, because only it allows arbitrary Lisp
forms.