HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| a2535589 JA |
1 | ;; Scramble text amusingly for Emacs. |
| 2 | ;; Copyright (C) 1985 Free Software Foundation, Inc. | |
| 3 | ||
| 4 | ;; This file is part of GNU Emacs. | |
| 5 | ||
| 6 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
| 7 | ;; it under the terms of the GNU General Public License as published by | |
| 8 | ;; the Free Software Foundation; either version 1, or (at your option) | |
| 9 | ;; any later version. | |
| 10 | ||
| 11 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
| 12 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | ;; GNU General Public License for more details. | |
| 15 | ||
| 16 | ;; You should have received a copy of the GNU General Public License | |
| 17 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
| 18 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 19 | ||
| 20 | ||
| 21 | (defun dissociated-press (&optional arg) | |
| 22 | "Dissociate the text of the current buffer. | |
| 23 | Output goes in buffer named *Dissociation*, | |
| 24 | which is redisplayed each time text is added to it. | |
| 25 | Every so often the user must say whether to continue. | |
| 26 | If ARG is positive, require ARG chars of continuity. | |
| 27 | If ARG is negative, require -ARG words of continuity. | |
| 28 | Default is 2." | |
| 29 | (interactive "P") | |
| 30 | (setq arg (if arg (prefix-numeric-value arg) 2)) | |
| 31 | (let* ((inbuf (current-buffer)) | |
| 32 | (outbuf (get-buffer-create "*Dissociation*")) | |
| 33 | (move-function (if (> arg 0) 'forward-char 'forward-word)) | |
| 34 | (move-amount (if (> arg 0) arg (- arg))) | |
| 35 | (search-function (if (> arg 0) 'search-forward 'word-search-forward)) | |
| 36 | (last-query-point 0)) | |
| 37 | (switch-to-buffer outbuf) | |
| 38 | (erase-buffer) | |
| 39 | (while | |
| 40 | (save-excursion | |
| 41 | (goto-char last-query-point) | |
| 42 | (vertical-motion (- (window-height) 4)) | |
| 43 | (or (= (point) (point-max)) | |
| 44 | (and (progn (goto-char (point-max)) | |
| 45 | (y-or-n-p "Continue dissociation? ")) | |
| 46 | (progn | |
| 47 | (message "") | |
| 48 | (recenter 1) | |
| 49 | (setq last-query-point (point-max)) | |
| 50 | t)))) | |
| 51 | (let (start end) | |
| 52 | (save-excursion | |
| 53 | (set-buffer inbuf) | |
| 54 | (setq start (point)) | |
| 55 | (if (eq move-function 'forward-char) | |
| 56 | (progn | |
| 57 | (setq end (+ start (+ move-amount (random 16)))) | |
| 58 | (if (> end (point-max)) | |
| 59 | (setq end (+ 1 move-amount (random 16)))) | |
| 60 | (goto-char end)) | |
| 61 | (funcall move-function | |
| 62 | (+ move-amount (random 16)))) | |
| 63 | (setq end (point))) | |
| 64 | (let ((opoint (point))) | |
| 65 | (insert-buffer-substring inbuf start end) | |
| 66 | (save-excursion | |
| 67 | (goto-char opoint) | |
| 68 | (end-of-line) | |
| 69 | (and (> (current-column) fill-column) | |
| 70 | (do-auto-fill))))) | |
| 71 | (save-excursion | |
| 72 | (set-buffer inbuf) | |
| 73 | (if (eobp) | |
| 74 | (goto-char (point-min)) | |
| 75 | (let ((overlap | |
| 76 | (buffer-substring (prog1 (point) | |
| 77 | (funcall move-function | |
| 78 | (- move-amount))) | |
| 79 | (point)))) | |
| 80 | (let (ranval) | |
| 81 | (while (< (setq ranval (random)) 0)) | |
| 82 | (goto-char (1+ (% ranval (1- (point-max)))))) | |
| 83 | (or (funcall search-function overlap nil t) | |
| 84 | (let ((opoint (point))) | |
| 85 | (goto-char 1) | |
| 86 | (funcall search-function overlap opoint t)))))) | |
| 87 | (sit-for 0)))) |