bug#28898: 27.0.50; rgrep + icomplete => (cl-assertion-failed (functionp table))

[Charles A. Roelli]

> From: Dmitry Alexandrov <321942@gmail.com>
> Date: Thu, 19 Oct 2017 04:57:30 +0300
> 
> Steps to reproduce:
> 
> $ cd /
> $ emacs -Q
> M-x icomplete-mode
> M-x rgrep foo RET e
> 
> (Where ‘foo’ is arbitrary text and ‘e’ is the first letter of one of possible 
> completions.  In this example that would be ‘etc’.)
> 
> Got an ‘Error in post-command-hook (icomplete-post-command-hook): 
> (cl-assertion-failed (functionp table))’.

Thanks.  Does the fix posted in the referenced bug prevent the error?
(See https://debbugs.gnu.org/cgi/bugreport.cgi?bug=16274#62.)