Adam Sjøgren <asjo@koldfront.dk> writes:

> Xu Chunyang analysed the problem with setf I presented on
> emacs.stackexchange.com¹ as so:
>
>   There is a bug in image--set-property, (setcdr image (cddr image))
>   should be (setcdr image (cdddr image)), i.e., change cddr into cdddr

I agree that this is the problem, and the attached patch should fix
that.  Eli, should this go to emacs-26 or master?

Thanks,

-- 
Basil