41 lines
1.4 KiB
EmacsLisp
41 lines
1.4 KiB
EmacsLisp
;; Display a buffer in rot13.
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;; Copyright (C) 1988 Free Software Foundation, Inc.
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 1, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to
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;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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;; Written by Howard Gayle. See case-table.el for details.
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;; This hack is mainly to show off the char table stuff.
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(defvar rot13-display-table
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(let ((table (make-display-table))
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(i 0))
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(while (< i 26)
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(aset table (+ i ?a) (make-rope (+ (% (+ i 13) 26) ?a)))
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(aset table (+ i ?A) (make-rope (+ (% (+ i 13) 26) ?A)))
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(setq i (1+ i)))
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table)
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"Char table for rot 13 display.")
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(defun rot13-other-window ()
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"Display current buffer in rot 13 in another window."
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(interactive)
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(let ((w (display-buffer (current-buffer) t)))
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(set-window-display-table w rot13-display-table)))
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(provide 'rot13)
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