mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-30 08:09:04 +00:00
100 lines
3.2 KiB
EmacsLisp
100 lines
3.2 KiB
EmacsLisp
;;; dissociate.el --- scramble text amusingly for Emacs -*- lexical-binding:t -*-
|
|
|
|
;; Copyright (C) 1985, 2001-2023 Free Software Foundation, Inc.
|
|
|
|
;; Maintainer: emacs-devel@gnu.org
|
|
;; Keywords: games
|
|
|
|
;; This file is part of GNU Emacs.
|
|
|
|
;; GNU Emacs is free software: you can redistribute it and/or modify
|
|
;; it under the terms of the GNU General Public License as published by
|
|
;; the Free Software Foundation, either version 3 of the License, or
|
|
;; (at your option) any later version.
|
|
|
|
;; GNU Emacs is distributed in the hope that it will be useful,
|
|
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
;; GNU General Public License for more details.
|
|
|
|
;; You should have received a copy of the GNU General Public License
|
|
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
|
|
;; The single entry point, `dissociated-press', applies a travesty
|
|
;; generator to the current buffer. The results can be quite amusing.
|
|
|
|
;;; Code:
|
|
|
|
;;;###autoload
|
|
(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)
|
|
(with-current-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)))))
|
|
(with-current-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))))
|
|
|
|
(provide 'dissociate)
|
|
|
|
;;; dissociate.el ends here
|