Eli Zaretskii <eliz@gnu.org> schrieb am Sa., 2. Sep. 2017 um 14:46 Uhr:

> unblock 24655 by 27726
> thanks
>
> > From: Lars Ingebrigtsen <larsi@gnus.org>
> > Date: Sun, 16 Jul 2017 21:50:27 +0200
> >
> >
> > (plist-put '(:foo 1 :bar) :zot 2)
> >
> > Debugger entered--Lisp error: (wrong-type-argument listp (:foo 1 :bar))
> >   plist-put((:foo 1 :bar) :zot 2)
> >   eval((plist-put '(:foo 1 :bar) :zot 2) nil)
> >   elisp--eval-last-sexp(nil)
> >   eval-last-sexp(nil)
> >   funcall-interactively(eval-last-sexp nil)
> >   call-interactively(eval-last-sexp nil nil)
> >   command-execute(eval-last-sexp)
> >
> > The error seems to say that '(:foo 1 :bar) isn't a list.  But the
> > problem is that it's not a valid plist, since it has an odd number of
> > elements.
> >
> > So I think there should be a different error being signalled here.  (And
> > there isn't really a backwards compatibility issue here of introducing a
> > new error symbol: Emacs 26.1 started signalling errors for these lists;
> > previously it was fine having odd plists.)
>
> Would someone please look into this bug?
>

I've installed commit  71766a45f1 to improve the message.