Open any elisp file and mark a function, and the active region is

not font-lockfied. 

This only occurs in GUI mode, it's ok with text-mode.  

In GNU Emacs 24.3.50.14 (x86_64-apple-darwin13.0.0, NS apple-appkit-1265.00)

 of 2013-10-21 on Darren-rMBP.local

Bzr revision: 114730 jan.h.d@swipnet.se-20131020164742-8yrjvlomlsy27w9u

Windowing system distributor `Apple', version 10.3.1265

Configured using:

 `configure --with-ns'

Important settings:

  value of $LANG: en_US.UTF-8

  locale-coding-system: utf-8-unix

  default enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:

  tooltip-mode: t

  mouse-wheel-mode: t

  tool-bar-mode: t

  menu-bar-mode: t

  file-name-shadow-mode: t

  global-font-lock-mode: t

  font-lock-mode: t

  blink-cursor-mode: t

  auto-composition-mode: t

  auto-encryption-mode: t

  auto-compression-mode: t

  line-number-mode: t

  transient-mark-mode: t

Recent input:

M-x r e o <backspace> p o r t <tab> <return>

Recent messages:

For information about GNU Emacs and the GNU system, type C-h C-a.

Load-path shadows:

None found.

Features:

(shadow sort gnus-util mail-extr emacsbug message 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 mail-prsvr mail-utils time-date tooltip ediff-hook vc-hooks

lisp-float-type mwheel ns-win 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 cocoa ns

multi-tty emacs)