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1 ;;; messagexmas.el --- XEmacs extensions to message
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2 ;; Copyright (C) 1996,97 Free Software Foundation, Inc.
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3
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4 ;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
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5 ;; Keywords: mail, news
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6
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7 ;; This file is part of GNU Emacs.
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8
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9 ;; GNU Emacs is free software; you can redistribute it and/or modify
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10 ;; it under the terms of the GNU General Public License as published by
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11 ;; the Free Software Foundation; either version 2, or (at your option)
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12 ;; any later version.
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13
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14 ;; GNU Emacs is distributed in the hope that it will be useful,
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15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 ;; GNU General Public License for more details.
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18
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19 ;; You should have received a copy of the GNU General Public License
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20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
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21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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22 ;; Boston, MA 02111-1307, USA.
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23
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24 ;;; Commentary:
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25
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26 ;;; Code:
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27
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2
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28 (require 'nnheader)
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29
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30 (defvar message-xmas-dont-activate-region t
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31 "If t, don't activate region after yanking.")
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32
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33 (defvar message-xmas-glyph-directory nil
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34 "*Directory where Message logos and icons are located.
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35 If this variable is nil, Message will try to locate the directory
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36 automatically.")
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37
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38 (defvar message-use-toolbar (if (featurep 'toolbar)
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39 'default-toolbar
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40 nil)
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41 "*If nil, do not use a toolbar.
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42 If it is non-nil, it must be a toolbar. The five legal values are
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43 `default-toolbar', `top-toolbar', `bottom-toolbar',
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44 `right-toolbar', and `left-toolbar'.")
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45
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46 (defvar message-toolbar
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47 '([message-spell ispell-message t "Spell"]
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48 [message-help (Info-goto-node "(Message)Top") t "Message help"])
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49 "The message buffer toolbar.")
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50
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51 (defun message-xmas-find-glyph-directory (&optional package)
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52 (setq package (or package "message"))
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53 (let ((dir (symbol-value
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54 (intern-soft (concat package "-xmas-glyph-directory")))))
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55 (if (and (stringp dir) (file-directory-p dir))
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56 dir
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57 (nnheader-find-etc-directory package))))
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58
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59 (defun message-xmas-setup-toolbar (bar &optional force package)
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60 (let ((dir (message-xmas-find-glyph-directory package))
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61 (xpm (if (featurep 'xpm) "xpm" "xbm"))
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62 icon up down disabled name)
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63 (unless package
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64 (setq message-xmas-glyph-directory dir))
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65 (when dir
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66 (while bar
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67 (setq icon (aref (car bar) 0)
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68 name (symbol-name icon)
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69 bar (cdr bar))
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70 (when (or force
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71 (not (boundp icon)))
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72 (setq up (concat dir name "-up." xpm))
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73 (setq down (concat dir name "-down." xpm))
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74 (setq disabled (concat dir name "-disabled." xpm))
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75 (if (not (file-exists-p up))
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76 (setq bar nil
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77 dir nil)
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78 (set icon (toolbar-make-button-list
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79 up (and (file-exists-p down) down)
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80 (and (file-exists-p disabled) disabled)))))))
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81 dir))
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82
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83 (defun message-setup-toolbar ()
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84 (and message-use-toolbar
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85 (message-xmas-setup-toolbar message-toolbar)
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86 (set-specifier (symbol-value message-use-toolbar)
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87 (cons (current-buffer) message-toolbar))))
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88
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89 (defun message-xmas-exchange-point-and-mark ()
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90 "Exchange point and mark, but allow for XEmacs' optional argument."
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91 (exchange-point-and-mark message-xmas-dont-activate-region))
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92
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93 (fset 'message-exchange-point-and-mark 'message-xmas-exchange-point-and-mark)
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94
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95 (defun message-xmas-maybe-fontify ()
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96 (when (and (featurep 'font-lock)
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97 font-lock-auto-fontify)
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98 (turn-on-font-lock)))
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99
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100
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100 (defun message-xmas-make-caesar-translation-table (n)
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101 "Create a rot table with offset N."
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102 (let ((i -1)
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103 (table (make-string 256 0))
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104 (a (char-int ?a))
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105 (A (char-int ?A)))
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106 (while (< (incf i) 256)
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107 (aset table i i))
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108 (concat
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109 (substring table 0 A)
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110 (substring table (+ A n) (+ A n (- 26 n)))
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111 (substring table A (+ A n))
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112 (substring table (+ A 26) a)
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113 (substring table (+ a n) (+ a n (- 26 n)))
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114 (substring table a (+ a n))
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115 (substring table (+ a 26) 255))))
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116
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117 (when (>= emacs-major-version 20)
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118 (fset 'message-make-caesar-translation-table
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119 'message-xmas-make-caesar-translation-table))
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120
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121 (add-hook 'message-mode-hook 'message-xmas-maybe-fontify)
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122
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123 (provide 'messagexmas)
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124
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125 ;;; messagexmas.el ends here
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