1 ;;; rot13.el --- display a buffer in rot13.
3 ;; Copyright (C) 1988 Free Software Foundation, Inc.
5 ;; Author: Howard Gayle:
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to
22 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
26 ;; Written by Howard Gayle. See case-table.el for details.
28 ;; This hack is mainly to show off the char table stuff.
32 (defvar rot13-display-table
33 (let ((table (make-display-table))
36 (aset table
(+ i ?a
) (make-rope (+ (%
(+ i
13) 26) ?a
)))
37 (aset table
(+ i ?A
) (make-rope (+ (%
(+ i
13) 26) ?A
)))
40 "Char table for rot 13 display.")
42 (defun rot13-other-window ()
43 "Display current buffer in rot 13 in another window."
45 (let ((w (display-buffer (current-buffer) t
)))
46 (set-window-display-table w rot13-display-table
)))
50 ;;; rot13.el ends here