Subject: prog-prettify-symbols breaks font-locking
From: Juanma Barranquero <[email-masked]>
To: Bug-Gnu-Emacs <[email-masked]>
Date: Sat, 8 Jun 2013 06:35:01 +0200
List-Id: <debbugs-submit.debbugs.gnu.org>

Package: emacs
Version: 24.3.50

With simple test file test.el having:
(defun test () "This is a test.")

emacs -Q --eval "(setq-default prog-prettify-symbols nil)" test.el    ; correct
emacs -Q --eval "(setq-default prog-prettify-symbols t)" test.el  ; incorrect