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Highlighting of special word-tags in all modes

From: Nordlöw
Subject: Highlighting of special word-tags in all modes
Date: 6 May 2007 05:17:46 -0700
User-agent: G2/1.0

Hey again, Hackers!

How do I make the following code active in *all* modes in Emacs?
Adding a hook to the text-mode-hook works for many but not *all*
modes. Here is the code:

(defvar alert-tags
  '("FIXME" "FixMe"
    "TODO" "ToDo"
    "TEST" "Test"
    "NOTE" "Note"
    "WARNING" "Warning"
    "OBS" "Obs"
    "OBSERVE" "Observe"
  "Special tags/words mainly used in source code comments to alert the
reader about important things.")

(defun alert-tags-font-locking ()
    (cons (concat "\\<\\(" (regexp-opt alert-tags) "\\):")
          '(1 'font-lock-warning-face prepend)) ;need prepend-merge to
override inside comments

(add-hook 'text-mode-hook 'alert-tags-font-locking) ;all modes for now

Many Thanks in advance,

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