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Annotation of GNUtools/emacs/lisp/dissociate.el, revision 1.1

1.1     ! root        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 (logand 15 (random)))))
        !            58:               (if (> end (point-max))
        !            59:                   (setq end (+ 1 move-amount (logand 15 (random)))))
        !            60:               (goto-char end))
        !            61:           (funcall move-function
        !            62:                    (+ move-amount (logand 15 (random)))))
        !            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))))

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