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1 ;;; rmail-kill.el --- Mail filtering for rmail
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2
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3 ;; Copyright status unknown
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4
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5 ;; Author: Unknown
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6 ;; Keywords: mail
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7
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8 ;; This file is part of XEmacs.
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9
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10 ;; XEmacs is free software; you can redistribute it and/or modify it
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11 ;; under the terms of the GNU General Public License as published by
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12 ;; the Free Software Foundation; either version 2, or (at your option)
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13 ;; any later version.
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14
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15 ;; XEmacs is distributed in the hope that it will be useful, but
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16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 ;; General Public License for more details.
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19
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20 ;; You should have received a copy of the GNU General Public License
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21 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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22 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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23 ;; 02111-1307, USA.
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24
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25 ;;; Synched up with: Not in FSF.
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26
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27 ;;; Commentary:
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28 ;; This is the Original Notice on this file:
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29 ;; GNU Emacs and this file "rmail-kill.el", is distributed in the hope
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30 ;; that it will be useful, but WITHOUT ANY WARRANTY. No author or
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31 ;; distributor accepts responsibility to anyone for the consequences
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32 ;; of using it or for whether it serves any particular purpose or
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33 ;; works at all, unless he says so in writing. Refer to the GNU Emacs
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34 ;; General Public License for full details.
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35
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36 ;; Everyone is granted permission to copy, modify and redistribute GNU
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37 ;; Emacs and rmail-kill.el, but only under the conditions described in
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38 ;; the GNU Emacs General Public License. A copy of this license is
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39 ;; supposed to have been given to you along with GNU Emacs so you can
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40 ;; know your rights and responsibilities. It should be in a file
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41 ;; named COPYING. Among other things, the copyright notice and this
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42 ;; notice must be preserved on all copies.
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43
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72
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44 ;;; Code:
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45 (setq rmail-message-filter 'rmail-maybe-execute-message
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46 rmail-mode-hook '((lambda ()
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47 (define-key rmail-mode-map "e" 'rmail-extract-rejected-message)
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48 (define-key rmail-mode-map "b" 'rmail-beginning-of-message)
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49 (define-key rmail-mode-map "K" 'rmail-execute-messages))))
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50
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51 ;; a-list with each entry (rmail-field-name . pattern)
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52 (defvar rmail-usual-suspects
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53 '(("subject" . "Smithsonian Astronomical Observatory")
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54 ("subject" . "MGR, Bellcore window manager, Part"))
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55 "An alist used to kill rmail messages based on regex matches to different fields.
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56 The car of each entry is the name of a mail header, the cdr is a pattern.
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57 Case is not significant.)
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58
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59 See also the documentation for rmail-maybe-execute-message and
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60 rmail-execute-messages.")
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61
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62 (setq kill-emacs-hook 'maybe-book-some-suspects)
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63
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64 (defun maybe-book-some-suspects ()
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65 (save-window-excursion
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66 (find-file "~/.emacs")
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67 (goto-char (point-min))
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68 (re-search-forward "^(defvar rmail-usual-suspects$")
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69 (down-list 1)
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70 (backward-char 1)
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71 (if (not (equal rmail-usual-suspects
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72 (save-excursion (read (current-buffer)))))
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73 (progn
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74 (switch-to-buffer-other-window "SUSPECTS")
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75 (erase-buffer)
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76 (mapcar '(lambda (x) (print x (current-buffer)))
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77 rmail-usual-suspects)
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78 (set-buffer-modified-p nil)
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79 (if (y-or-n-p "Save the usual suspects? ")
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80 (progn
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81 (set-buffer ".emacs")
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82 (kill-sexp 1)
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83 (prin1 rmail-usual-suspects (get-buffer ".emacs"))
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84 (save-buffer)))))))
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85
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86 (defun rmail-maybe-execute-message (&optional suspects dont-move)
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87 "Kill the current message if it matches an entry in SUSPECTS.
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88 SUSPECTS is alist of the form of rmail-usual-suspects (which see).
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89 If the current message contains a mail header that matches pattern,
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90 it is deleted.
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91
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92 This function can be used as a rmail-message-filter (which see)."
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93 (if (null suspects)
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94 (setq suspects rmail-usual-suspects))
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95 (while suspects
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96 (if (and (string-match (cdr (car suspects))
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97 ;; if not such field, can never match
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98 (or (mail-fetch-field (car (car suspects))) "$^"))
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99 (not (rmail-message-deleted-p rmail-current-message)))
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100 (progn
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101 (message "Deleted message %d" rmail-current-message)
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102 (if dont-move
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103 (rmail-delete-message)
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104 (rmail-delete-forward))
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105 (setq suspects nil))
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106 (setq suspects (cdr suspects)))))
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107
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108 (defun rmail-execute-messages (round-up-the-usual-suspects)
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109 "Kill some rmail messages based on regex matches to a kill-alist.
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110 With a prefix arg, use rmail-usual-suspects as the kill-alist, otherwise
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111 prompt for a field name."
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112 (interactive "P")
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113 (let ((scene-of-the-crime rmail-current-message)
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114 (alleged-perpetrator)
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115 (cuffed-all-suspects nil))
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116 (if round-up-the-usual-suspects
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117 (setq alleged-perpetrator rmail-usual-suspects)
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118 (let* ((weapon (rmail-get-current-header "Kill what field? (default Subject) " "Subject"))
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119 (default-description (or (regexp-quote (mail-fetch-field weapon))
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120 "some regex"))
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121 (most-wanted-notice (format "Kill messages having a \"%s\" field matching? (default %s) "
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122 weapon default-description))
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123 (suspect-description (read-string-with-default most-wanted-notice default-description)))
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124 (setq alleged-perpetrator (list (cons weapon suspect-description)))
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125 (if (y-or-n-p "Add it to rmail-usual-suspects? ")
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126 (setq rmail-usual-suspects (append alleged-perpetrator rmail-usual-suspects)))))
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127
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128 (while (not cuffed-all-suspects)
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129 (rmail-maybe-execute-message alleged-perpetrator 'dont-move)
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130 ;;
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131 ;; rmail-next-undeleted-message returns a string when there are no more, but
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132 ;; we also want a chance to delete that last message...
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133 ;;
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134 (if (stringp alleged-perpetrator)
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135 (setq cuffed-all-suspects t)
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136 (setq cuffed-all-suspects (rmail-next-undeleted-message 1))))
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137
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138 (rmail-show-message scene-of-the-crime)
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139 (if (rmail-message-deleted-p rmail-current-message)
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140 (rmail-next-undeleted-message 1))
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141 (if (rmail-message-deleted-p rmail-current-message)
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142 (rmail-previous-undeleted-message 1))))
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143
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144 (defun rmail-get-current-header (prompt default)
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145 (save-excursion
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146 (let* ((end (progn (end-of-line) (point))))
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147 (beginning-of-line)
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148 (if (re-search-forward "^\\([^ \t]*\\):" end t)
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149 (buffer-substring (match-beginning 1) (match-end 1))
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150 (read-string-with-default prompt default)))))
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151
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152 (defun read-string-with-default (prompt default)
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153 (let ((s (read-string prompt)))
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154 (if (string= s "") default s)))
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72
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155
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156 (provide 'rmail-kill)
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157
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158 ;;; rmail-kill.el ends here
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