bug#19336: 24.4; icomplete-mode error when icomplete-show-matches-on-no-input set

[Max]

Hello,

Starting with emacs -q in a directory containing files a, b, c and d.

Typing:

M-x icomplete-mode
M-: (setq icomplete-show-matches-on-no-input t)
C-x C-f
C-a C-k

produces:

Error in post-command-hook (icomplete-post-command-hook): 
(invalid-function (#("a" 0 1 (face (completions-first-difference))) 
#("b" 0 1 (face (completions-first-difference))) #("c" 0 1 (face 
(completions-first-difference))) #("d" 0 1 (face 
(completions-first-difference))) #("./" 0 1 (face 
(completions-first-difference))) #("../" 0 1 (face 
(completions-first-difference)))))
This does not occur when icomplete-show-matches-on-no-input is nil.

Regards,

Max.

In GNU Emacs 24.4.1 (amd64-portbld-freebsd10.0, GTK+ Version 2.24.22)
 of 2014-11-19 on 10amd64-default-job-12
Windowing system distributor `The X.Org Foundation', version 11.0.11204000
Configured using:
 `configure --localstatedir=/var --disable-acl --with-dbus
 --without-file-notification --with-gconf --with-gif --with-gnutls
 --with-gsettings --with-jpeg --with-m17n-flt --with-imagemagick
 --with-libotf --with-png --with-toolkit-scroll-bars --with-rsvg
 --with-tiff --with-x --with-xft --with-xim --with-xml2 --with-xpm
 --with-x-toolkit=gtk2 --with-sound=oss --x-libraries=/usr/local/lib
 --x-includes=/usr/local/include --prefix=/usr/local
 --mandir=/usr/local/man --infodir=/usr/local/share/emacs/info/
 --build=amd64-portbld-freebsd10.0 'CFLAGS=-O2 -pipe -fstack-protector
 -fno-strict-aliasing' CPPFLAGS=-I/usr/local/include 'LDFLAGS=
 -L/usr/local/lib -Wl,-rpath=/usr/lib:/usr/local/lib -fstack-protector''

Important settings:
  value of $LANG: fr_FR.ISO8859-1
  locale-coding-system: iso-latin-1-unix

Major mode: Fundamental

Minor modes in effect:
  icomplete-mode: t
  tooltip-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  buffer-read-only: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
<help-echo> <help-echo> <help-echo> <help-echo> <escape>
x i c o m p <tab> <return> <escape> : ( s e t q SPC
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo>
<help-echo> <down-mouse-2> <mouse-2> <return> C-x C-f
C-a C-k C-g <escape> x r e p o r <tab> <return>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Icomplete mode enabled
t
Error in post-command-hook (icomplete-post-command-hook): 
(invalid-function (#("a" 0 1 (face (completions-first-difference))) 
#("b" 0 1 (face (completions-first-difference))) #("c" 0 1 (face 
(completions-first-difference))) #("d" 0 1 (face 
(completions-first-difference))) #("./" 0 1 (face 
(completions-first-difference))) #("../" 0 1 (face 
(completions-first-difference)))))
Quit

Load-path shadows:
None found.

Features:
(shadow sort gnus-util mail-extr emacsbug message idna format-spec
rfc822 mml easymenu mml-sec mm-decode mm-bodies mm-encode mail-parse
rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045
ietf-drums mm-util help-fns mail-prsvr mail-utils mule-util cus-start
cus-load icomplete time-date tooltip electric uniquify ediff-hook
vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image
regexp-opt fringe tabulated-list newcomment lisp-mode prog-mode register
page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock
font-lock syntax facemenu font-core frame cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew
greek romanian slovak czech european ethiopic indian cyrillic chinese
case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer nadvice
loaddefs button faces cus-face macroexp files text-properties overlay
sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote make-network-process dbusbind
dynamic-setting system-font-setting font-render-setting move-toolbar gtk
x-toolkit x multi-tty emacs)

Memory information:
((conses 16 79065 5738)
 (symbols 48 18528 0)
 (miscs 40 193 139)
 (strings 32 10615 4482)
 (string-bytes 1 279369)
 (vectors 16 9192)
 (vector-slots 8 380309 13679)
 (floats 8 69 62)
 (intervals 56 326 284)
 (buffers 960 13))