bug#16274: 24.3.50; Error in post-command-hook (icomplete-post-command-hook): (invalid-function ("..." ...))

[Eli Zaretskii]

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: charles@aurox.ch (Charles A. Roelli),  16274@debbugs.gnu.org
> Date: Mon, 06 Nov 2017 23:06:26 -0500
> 
> >> Ping!  I hope to fix this for emacs-26 if it's possible.  It also
> >> solves Bug#28898.
> > Stefan, any objections for pushing this to the emacs-26 branch?
> 
> Yes, using nil instead of `md` has other undesirable side-effects.
> E.g. it loses the `category` metadata so it will cause the wrong
> completion-styles to be used e.g. in C-x b.
> 
> Does the patch below work around the problem?

Ping!  Charles, any comments?