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bug#7771: 23.1; can't turn off font-lock-mode globally


From: Eli Zaretskii
Subject: bug#7771: 23.1; can't turn off font-lock-mode globally
Date: Mon, 03 Jan 2011 20:01:48 +0200

> From: "Drew Adams" <address@hidden>
> Cc: <address@hidden>, <address@hidden>
> Date: Mon, 3 Jan 2011 08:00:34 -0800
> 
> > Users will not be deprived of anything, I think.  The problem is that
> > these features turn font-lock on in the compilation buffer, which is a
> > nuisance (for those who turned it off).
> 
> Good.  But what was said was that "compile (and grep) require font-lock to
> work".  That's what my comment responded to.

I understand, but I think the original comment was slightly
inaccurate.  I think a more accurate statement would be
"compilation-mode needs font-lock to be turned on for its
functionality, so it turns it on unconditionally in the compilation
buffer."  Here's the code from compilation-setup:

  (set (make-local-variable 'font-lock-support-mode) nil)
  (set (make-local-variable 'font-lock-maximum-size) nil)
  (if minor
      (let ((fld font-lock-defaults))
        (font-lock-add-keywords nil (compilation-mode-font-lock-keywords))
        (if font-lock-mode
            (if fld
                (font-lock-fontify-buffer)
              (font-lock-change-mode)
              (turn-on-font-lock))
          (turn-on-font-lock)))
    (setq font-lock-defaults '(compilation-mode-font-lock-keywords t))
    ;; maybe defer font-lock till after derived mode is set up
    (run-mode-hooks 'compilation-turn-on-font-lock)))

and compilation-turn-on-font-lock is defined like this:

  (defconst compilation-turn-on-font-lock 'turn-on-font-lock)





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