(defun dissociated-press (&optional arg)
"Dissociate the text of the current buffer.
Output goes in buffer named *Dissociation*,
which is redisplayed each time text is added to it.
Every so often the user must say whether to continue.
If ARG is positive, require ARG chars of continuity.
If ARG is negative, require -ARG words of continuity.
Default is 2."
(interactive "P")
(setq arg (if arg (prefix-numeric-value arg) 2))
(let* ((inbuf (current-buffer))
(outbuf (get-buffer-create "*Dissociation*"))
(move-function (if (> arg 0) 'forward-char 'forward-word))
(move-amount (if (> arg 0) arg (- arg)))
(search-function (if (> arg 0) 'search-forward 'word-search-forward))
(last-query-point 0))
(if (= (point-max) (point-min))
(error "The buffer contains no text to start from"))
(switch-to-buffer outbuf)
(erase-buffer)
(while
(save-excursion
(goto-char last-query-point)
(vertical-motion (- (window-height) 4))
(or (= (point) (point-max))
(and (progn (goto-char (point-max))
(y-or-n-p "Continue dissociation? "))
(progn
(message "")
(recenter 1)
(setq last-query-point (point-max))
t))))
(let (start end)
(save-excursion
(set-buffer inbuf)
(setq start (point))
(if (eq move-function 'forward-char)
(progn
(setq end (+ start (+ move-amount (random 16))))
(if (> end (point-max))
(setq end (+ 1 move-amount (random 16))))
(goto-char end))
(funcall move-function
(+ move-amount (random 16))))
(setq end (point)))
(let ((opoint (point)))
(insert-buffer-substring inbuf start end)
(save-excursion
(goto-char opoint)
(end-of-line)
(and (> (current-column) fill-column)
(do-auto-fill)))))
(save-excursion
(set-buffer inbuf)
(if (eobp)
(goto-char (point-min))
(let ((overlap
(buffer-substring (prog1 (point)
(funcall move-function
(- move-amount)))
(point))))
(goto-char (1+ (random (1- (point-max)))))
(or (funcall search-function overlap nil t)
(let ((opoint (point)))
(goto-char 1)
(funcall search-function overlap opoint t))))))
(sit-for 0))))
(random t)
(provide 'dissociate)