Subject: Re: bug#28898: 27.0.50; rgrep + icomplete => (cl-assertion-failed (functionp table))
From: [email-masked] (Charles A. Roelli)
To: Dmitry Alexandrov <[email-masked]>
Cc: [email-masked]
Date: Sun, 12 Nov 2017 10:39:09 +0100
List-Id: <debbugs-submit.debbugs.gnu.org>

A fix was pushed to emacs-26:

d63c9a9..: Stefan Monnier 2017-11-11 * lisp/minibuffer.el: Install a workaround for bug#16274
  commit d63c9a96f51fd4d723dc66a6cc0a8a0a04c8ce6c
  Author: Stefan Monnier <[email-masked]>
  Ref:    emacs-26~5
  Date:   Sat Nov 11 10:25:20 2017 -0500

  * lisp/minibuffer.el: Install a workaround for bug#16274

  * lisp/minibuffer.el (completion--nth-completion): Avoid signaling an
  error when `md` is applied to another table.

It should already be merged into master, so I'm closing the bug.
Thanks for reporting this issue.