1 ;;; rot13.el --- display a buffer in rot13.
3 ;; Copyright (C) 1988 Free Software Foundation, Inc.
5 ;; This file is part of GNU Emacs.
7 ;; GNU Emacs is free software; you can redistribute it and/or modify
8 ;; it under the terms of the GNU General Public License as published by
9 ;; the Free Software Foundation; either version 1, or (at your option)
12 ;; GNU Emacs is distributed in the hope that it will be useful,
13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 ;; GNU General Public License for more details.
17 ;; You should have received a copy of the GNU General Public License
18 ;; along with GNU Emacs; see the file COPYING. If not, write to
19 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
22 ;; Written by Howard Gayle. See case-table.el for details.
24 ;; This hack is mainly to show off the char table stuff.
26 (defvar rot13-display-table
27 (let ((table (make-display-table))
30 (aset table
(+ i ?a
) (make-rope (+ (%
(+ i
13) 26) ?a
)))
31 (aset table
(+ i ?A
) (make-rope (+ (%
(+ i
13) 26) ?A
)))
34 "Char table for rot 13 display.")
36 (defun rot13-other-window ()
37 "Display current buffer in rot 13 in another window."
39 (let ((w (display-buffer (current-buffer) t
)))
40 (set-window-display-table w rot13-display-table
)))
44 ;;; rot13.el ends here