Make Messages Buffer modifiable in Emacs 24.4
(defadvice switch-to-buffer (after switch-to-buffer-after-hack activate)
(if (string= "*Messages*" (buffer-name))
(read-only-mode -1)))
(defadvice switch-to-buffer (after switch-to-buffer-after-hack activate)
(if (string= "*Messages*" (buffer-name))
(read-only-mode -1)))