Unfill please!

[Lennart Borgman <lennart.borgman@gmail.com>]

Now that we have visual-line-mode that is very good for writing text
wouldn't it be good to have unfilling too? Like the routines below?

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;; Unfilling
;;
;; The idea is from
;;   http://interglacial.com/~sburke/pub/emacs/sburke_dot_emacs.config

;;;###autoload
(defun unfill-paragraph ()
  "Unfill the current paragraph."
  (interactive) (with-unfilling 'fill-paragraph))
;;(defalias 'unwrap-paragraph 'unfill-paragraph)

;;;###autoload
(defun unfill-region ()
  "Unfill the current region."
  (interactive) (with-unfilling 'fill-region))
;;(defalias 'unwrap-region 'unfill-region)

;;;###autoload
(defun unfill-individual-paragraphs ()
  "Unfill individual paragraphs in the current region."
  (interactive) (with-unfilling 'fill-individual-paragraphs))
;;(defalias 'unwrap-individual-paragraphs 'unfill-individual-paragraphs)

(defun with-unfilling (fn)
  "Unfill using the fill function FN."
  (let ((fill-column 10000000)) (call-interactively fn)))