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1 ;;; nnmbox.el --- mail mbox access for Gnus
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2 ;; Copyright (C) 1995,96,97 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 ;; Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
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6 ;; Keywords: news, mail
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7
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8 ;; This file is part of GNU Emacs.
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9
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10 ;; GNU Emacs is free software; you can redistribute it and/or modify
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11 ;; it 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 ;; GNU Emacs is distributed in the hope that it will be useful,
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16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 ;; GNU 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 GNU Emacs; see the file COPYING. If not, write to the
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22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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23 ;; Boston, MA 02111-1307, USA.
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24
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25 ;;; Commentary:
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26
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27 ;; For an overview of what the interface functions do, please see the
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28 ;; Gnus sources.
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29
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30 ;;; Code:
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31
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32 (require 'nnheader)
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33 (require 'message)
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34 (require 'nnmail)
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35 (require 'nnoo)
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36 (eval-when-compile (require 'cl))
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37
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38 (nnoo-declare nnmbox)
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39
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40 (defvoo nnmbox-mbox-file (expand-file-name "~/mbox")
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41 "The name of the mail box file in the user's home directory.")
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42
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43 (defvoo nnmbox-active-file (expand-file-name "~/.mbox-active")
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44 "The name of the active file for the mail box.")
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45
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46 (defvoo nnmbox-get-new-mail t
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47 "If non-nil, nnmbox will check the incoming mail file and split the mail.")
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48
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49 (defvoo nnmbox-prepare-save-mail-hook nil
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50 "Hook run narrowed to an article before saving.")
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51
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52
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53
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54 (defconst nnmbox-version "nnmbox 1.0"
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55 "nnmbox version.")
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56
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57 (defvoo nnmbox-current-group nil
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58 "Current nnmbox news group directory.")
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59
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60 (defconst nnmbox-mbox-buffer nil)
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61
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62 (defvoo nnmbox-status-string "")
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63
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64 (defvoo nnmbox-group-alist nil)
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65 (defvoo nnmbox-active-timestamp nil)
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66
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67
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68
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69 ;;; Interface functions
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70
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71 (nnoo-define-basics nnmbox)
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72
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73 (deffoo nnmbox-retrieve-headers (sequence &optional newsgroup server fetch-old)
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74 (save-excursion
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75 (set-buffer nntp-server-buffer)
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76 (erase-buffer)
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77 (let ((number (length sequence))
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78 (count 0)
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79 article art-string start stop)
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80 (nnmbox-possibly-change-newsgroup newsgroup server)
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81 (while sequence
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82 (setq article (car sequence))
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83 (setq art-string (nnmbox-article-string article))
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84 (set-buffer nnmbox-mbox-buffer)
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85 (when (or (search-forward art-string nil t)
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86 (progn (goto-char (point-min))
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87 (search-forward art-string nil t)))
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88 (setq start
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89 (save-excursion
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90 (re-search-backward
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91 (concat "^" message-unix-mail-delimiter) nil t)
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92 (point)))
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93 (search-forward "\n\n" nil t)
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94 (setq stop (1- (point)))
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95 (set-buffer nntp-server-buffer)
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96 (insert (format "221 %d Article retrieved.\n" article))
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97 (insert-buffer-substring nnmbox-mbox-buffer start stop)
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98 (goto-char (point-max))
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99 (insert ".\n"))
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100 (setq sequence (cdr sequence))
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101 (setq count (1+ count))
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102 (and (numberp nnmail-large-newsgroup)
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103 (> number nnmail-large-newsgroup)
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104 (zerop (% count 20))
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105 (nnheader-message 5 "nnmbox: Receiving headers... %d%%"
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106 (/ (* count 100) number))))
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107
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108 (and (numberp nnmail-large-newsgroup)
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109 (> number nnmail-large-newsgroup)
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110 (nnheader-message 5 "nnmbox: Receiving headers...done"))
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111
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112 (set-buffer nntp-server-buffer)
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113 (nnheader-fold-continuation-lines)
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114 'headers)))
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115
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116 (deffoo nnmbox-open-server (server &optional defs)
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117 (nnoo-change-server 'nnmbox server defs)
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118 (nnmbox-create-mbox)
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119 (cond
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120 ((not (file-exists-p nnmbox-mbox-file))
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121 (nnmbox-close-server)
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122 (nnheader-report 'nnmbox "No such file: %s" nnmbox-mbox-file))
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123 ((file-directory-p nnmbox-mbox-file)
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124 (nnmbox-close-server)
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125 (nnheader-report 'nnmbox "Not a regular file: %s" nnmbox-mbox-file))
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126 (t
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127 (nnheader-report 'nnmbox "Opened server %s using mbox %s" server
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128 nnmbox-mbox-file)
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129 t)))
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130
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131 (deffoo nnmbox-close-server (&optional server)
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132 (when (and nnmbox-mbox-buffer
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133 (buffer-name nnmbox-mbox-buffer))
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134 (kill-buffer nnmbox-mbox-buffer))
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135 (nnoo-close-server 'nnmbox server)
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136 t)
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137
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138 (deffoo nnmbox-server-opened (&optional server)
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139 (and (nnoo-current-server-p 'nnmbox server)
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140 nnmbox-mbox-buffer
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141 (buffer-name nnmbox-mbox-buffer)
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142 nntp-server-buffer
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143 (buffer-name nntp-server-buffer)))
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144
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145 (deffoo nnmbox-request-article (article &optional newsgroup server buffer)
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146 (nnmbox-possibly-change-newsgroup newsgroup server)
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147 (save-excursion
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148 (set-buffer nnmbox-mbox-buffer)
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149 (goto-char (point-min))
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150 (when (search-forward (nnmbox-article-string article) nil t)
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151 (let (start stop)
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152 (re-search-backward (concat "^" message-unix-mail-delimiter) nil t)
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153 (setq start (point))
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154 (forward-line 1)
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155 (or (and (re-search-forward
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156 (concat "^" message-unix-mail-delimiter) nil t)
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157 (forward-line -1))
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158 (goto-char (point-max)))
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159 (setq stop (point))
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160 (let ((nntp-server-buffer (or buffer nntp-server-buffer)))
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161 (set-buffer nntp-server-buffer)
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162 (erase-buffer)
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163 (insert-buffer-substring nnmbox-mbox-buffer start stop)
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164 (goto-char (point-min))
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165 (while (looking-at "From ")
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166 (delete-char 5)
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167 (insert "X-From-Line: ")
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168 (forward-line 1))
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169 (if (numberp article)
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170 (cons nnmbox-current-group article)
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171 (nnmbox-article-group-number)))))))
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172
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173 (deffoo nnmbox-request-group (group &optional server dont-check)
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174 (let ((active (cadr (assoc group nnmbox-group-alist))))
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175 (cond
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176 ((or (null active)
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177 (null (nnmbox-possibly-change-newsgroup group server)))
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178 (nnheader-report 'nnmbox "No such group: %s" group))
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179 (dont-check
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180 (nnheader-report 'nnmbox "Selected group %s" group)
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181 (nnheader-insert ""))
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182 (t
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183 (nnheader-report 'nnmbox "Selected group %s" group)
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184 (nnheader-insert "211 %d %d %d %s\n"
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185 (1+ (- (cdr active) (car active)))
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186 (car active) (cdr active) group)))))
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187
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188 (deffoo nnmbox-request-scan (&optional group server)
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189 (nnmbox-possibly-change-newsgroup group server)
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190 (nnmbox-read-mbox)
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191 (nnmail-get-new-mail
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192 'nnmbox
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193 (lambda ()
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194 (save-excursion
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195 (set-buffer nnmbox-mbox-buffer)
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196 (save-buffer)))
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197 (file-name-directory nnmbox-mbox-file)
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198 group
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199 (lambda ()
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200 (save-excursion
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201 (let ((in-buf (current-buffer)))
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202 (set-buffer nnmbox-mbox-buffer)
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203 (goto-char (point-max))
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204 (insert-buffer-substring in-buf)))
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205 (nnmail-save-active nnmbox-group-alist nnmbox-active-file))))
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206
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207 (deffoo nnmbox-close-group (group &optional server)
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208 t)
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209
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210 (deffoo nnmbox-request-list (&optional server)
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211 (save-excursion
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212 (nnmail-find-file nnmbox-active-file)
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213 (setq nnmbox-group-alist (nnmail-get-active))
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214 t))
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215
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216 (deffoo nnmbox-request-newgroups (date &optional server)
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217 (nnmbox-request-list server))
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218
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219 (deffoo nnmbox-request-list-newsgroups (&optional server)
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220 (nnheader-report 'nnmbox "LIST NEWSGROUPS is not implemented."))
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221
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222 (deffoo nnmbox-request-expire-articles
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223 (articles newsgroup &optional server force)
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224 (nnmbox-possibly-change-newsgroup newsgroup server)
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225 (let* ((is-old t)
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226 rest)
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227 (nnmail-activate 'nnmbox)
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228
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229 (save-excursion
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230 (set-buffer nnmbox-mbox-buffer)
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231 (while (and articles is-old)
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232 (goto-char (point-min))
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233 (when (search-forward (nnmbox-article-string (car articles)) nil t)
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234 (if (setq is-old
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235 (nnmail-expired-article-p
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236 newsgroup
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237 (buffer-substring
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238 (point) (progn (end-of-line) (point))) force))
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239 (progn
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240 (nnheader-message 5 "Deleting article %d in %s..."
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241 (car articles) newsgroup)
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242 (nnmbox-delete-mail))
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243 (push (car articles) rest)))
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244 (setq articles (cdr articles)))
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245 (save-buffer)
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246 ;; Find the lowest active article in this group.
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247 (let ((active (nth 1 (assoc newsgroup nnmbox-group-alist))))
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248 (goto-char (point-min))
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249 (while (and (not (search-forward
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250 (nnmbox-article-string (car active)) nil t))
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251 (<= (car active) (cdr active)))
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252 (setcar active (1+ (car active)))
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253 (goto-char (point-min))))
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254 (nnmail-save-active nnmbox-group-alist nnmbox-active-file)
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255 (nconc rest articles))))
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256
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257 (deffoo nnmbox-request-move-article
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258 (article group server accept-form &optional last)
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259 (let ((buf (get-buffer-create " *nnmbox move*"))
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260 result)
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261 (and
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262 (nnmbox-request-article article group server)
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263 (save-excursion
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264 (set-buffer buf)
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265 (buffer-disable-undo (current-buffer))
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266 (erase-buffer)
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267 (insert-buffer-substring nntp-server-buffer)
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268 (goto-char (point-min))
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269 (while (re-search-forward
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270 "^X-Gnus-Newsgroup:"
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271 (save-excursion (search-forward "\n\n" nil t) (point)) t)
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272 (delete-region (progn (beginning-of-line) (point))
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273 (progn (forward-line 1) (point))))
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274 (setq result (eval accept-form))
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275 (kill-buffer buf)
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276 result)
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277 (save-excursion
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278 (nnmbox-possibly-change-newsgroup group server)
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279 (set-buffer nnmbox-mbox-buffer)
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280 (goto-char (point-min))
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281 (when (search-forward (nnmbox-article-string article) nil t)
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282 (nnmbox-delete-mail))
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283 (and last (save-buffer))))
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284 result))
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285
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286 (deffoo nnmbox-request-accept-article (group &optional server last)
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287 (nnmbox-possibly-change-newsgroup group server)
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288 (nnmail-check-syntax)
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289 (let ((buf (current-buffer))
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290 result)
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291 (goto-char (point-min))
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2
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292 ;; The From line may have been quoted by movemail.
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293 (when (looking-at (concat ">" message-unix-mail-delimiter))
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294 (delete-char 1))
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295 (if (looking-at "X-From-Line: ")
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296 (replace-match "From ")
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297 (insert "From nobody " (current-time-string) "\n"))
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298 (and
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299 (nnmail-activate 'nnmbox)
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300 (progn
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301 (set-buffer buf)
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302 (goto-char (point-min))
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303 (search-forward "\n\n" nil t)
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304 (forward-line -1)
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305 (while (re-search-backward "^X-Gnus-Newsgroup: " nil t)
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306 (delete-region (point) (progn (forward-line 1) (point))))
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307 (setq result (nnmbox-save-mail
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308 (if (stringp group)
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309 (list (cons group (nnmbox-active-number group)))
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310 (nnmail-article-group 'nnmbox-active-number)))))
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0
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311 (save-excursion
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312 (set-buffer nnmbox-mbox-buffer)
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313 (goto-char (point-max))
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314 (insert-buffer-substring buf)
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315 (and last (save-buffer))
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316 result)
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317 (nnmail-save-active nnmbox-group-alist nnmbox-active-file))
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318 (car result)))
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319
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320 (deffoo nnmbox-request-replace-article (article group buffer)
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321 (nnmbox-possibly-change-newsgroup group)
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322 (save-excursion
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323 (set-buffer nnmbox-mbox-buffer)
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324 (goto-char (point-min))
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325 (if (not (search-forward (nnmbox-article-string article) nil t))
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326 nil
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327 (nnmbox-delete-mail t t)
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328 (insert-buffer-substring buffer)
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329 (save-buffer)
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330 t)))
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331
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332 (deffoo nnmbox-request-delete-group (group &optional force server)
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333 (nnmbox-possibly-change-newsgroup group server)
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334 ;; Delete all articles in GROUP.
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335 (if (not force)
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336 () ; Don't delete the articles.
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337 (save-excursion
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338 (set-buffer nnmbox-mbox-buffer)
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339 (goto-char (point-min))
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340 ;; Delete all articles in this group.
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341 (let ((ident (concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":"))
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342 found)
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343 (while (search-forward ident nil t)
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344 (setq found t)
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345 (nnmbox-delete-mail))
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346 (when found
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347 (save-buffer)))))
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0
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348 ;; Remove the group from all structures.
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349 (setq nnmbox-group-alist
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350 (delq (assoc group nnmbox-group-alist) nnmbox-group-alist)
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351 nnmbox-current-group nil)
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352 ;; Save the active file.
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353 (nnmail-save-active nnmbox-group-alist nnmbox-active-file)
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354 t)
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355
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356 (deffoo nnmbox-request-rename-group (group new-name &optional server)
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357 (nnmbox-possibly-change-newsgroup group server)
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358 (save-excursion
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359 (set-buffer nnmbox-mbox-buffer)
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360 (goto-char (point-min))
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361 (let ((ident (concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":"))
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362 (new-ident (concat "\nX-Gnus-Newsgroup: " new-name ":"))
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363 found)
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364 (while (search-forward ident nil t)
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365 (replace-match new-ident t t)
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366 (setq found t))
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16
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367 (when found
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368 (save-buffer))))
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0
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369 (let ((entry (assoc group nnmbox-group-alist)))
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16
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370 (when entry
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371 (setcar entry new-name))
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0
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372 (setq nnmbox-current-group nil)
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373 ;; Save the new group alist.
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374 (nnmail-save-active nnmbox-group-alist nnmbox-active-file)
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375 t))
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376
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377
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378 ;;; Internal functions.
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379
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380 ;; If FORCE, delete article no matter how many X-Gnus-Newsgroup
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16
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381 ;; headers there are. If LEAVE-DELIM, don't delete the Unix mbox
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0
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382 ;; delimiter line.
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383 (defun nnmbox-delete-mail (&optional force leave-delim)
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384 ;; Delete the current X-Gnus-Newsgroup line.
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385 (or force
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386 (delete-region
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387 (progn (beginning-of-line) (point))
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388 (progn (forward-line 1) (point))))
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389 ;; Beginning of the article.
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390 (save-excursion
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391 (save-restriction
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392 (narrow-to-region
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393 (save-excursion
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394 (re-search-backward (concat "^" message-unix-mail-delimiter) nil t)
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395 (if leave-delim (progn (forward-line 1) (point))
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396 (match-beginning 0)))
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397 (progn
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398 (forward-line 1)
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16
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399 (or (and (re-search-forward (concat "^" message-unix-mail-delimiter)
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0
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400 nil t)
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401 (if (and (not (bobp)) leave-delim)
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402 (progn (forward-line -2) (point))
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403 (match-beginning 0)))
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404 (point-max))))
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405 (goto-char (point-min))
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406 ;; Only delete the article if no other groups owns it as well.
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16
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407 (when (or force (not (re-search-forward "^X-Gnus-Newsgroup: " nil t)))
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408 (delete-region (point-min) (point-max))))))
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0
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409
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410 (defun nnmbox-possibly-change-newsgroup (newsgroup &optional server)
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411 (when (and server
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412 (not (nnmbox-server-opened server)))
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413 (nnmbox-open-server server))
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16
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414 (when (or (not nnmbox-mbox-buffer)
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415 (not (buffer-name nnmbox-mbox-buffer)))
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416 (save-excursion
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417 (set-buffer (setq nnmbox-mbox-buffer
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418 (nnheader-find-file-noselect
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419 nnmbox-mbox-file nil 'raw)))
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420 (buffer-disable-undo (current-buffer))))
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421 (when (not nnmbox-group-alist)
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422 (nnmail-activate 'nnmbox))
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0
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423 (if newsgroup
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16
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424 (when (assoc newsgroup nnmbox-group-alist)
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425 (setq nnmbox-current-group newsgroup))
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0
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426 t))
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427
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428 (defun nnmbox-article-string (article)
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429 (if (numberp article)
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430 (concat "\nX-Gnus-Newsgroup: " nnmbox-current-group ":"
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431 (int-to-string article) " ")
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432 (concat "\nMessage-ID: " article)))
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433
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434 (defun nnmbox-article-group-number ()
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435 (save-excursion
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436 (goto-char (point-min))
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16
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437 (when (re-search-forward "^X-Gnus-Newsgroup: +\\([^:]+\\):\\([0-9]+\\) "
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438 nil t)
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439 (cons (buffer-substring (match-beginning 1) (match-end 1))
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440 (string-to-int
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441 (buffer-substring (match-beginning 2) (match-end 2)))))))
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0
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442
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16
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443 (defun nnmbox-save-mail (group-art)
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0
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444 "Called narrowed to an article."
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16
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445 (let ((delim (concat "^" message-unix-mail-delimiter)))
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0
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446 (goto-char (point-min))
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447 ;; This might come from somewhere else.
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448 (unless (looking-at delim)
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449 (insert "From nobody " (current-time-string) "\n")
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450 (goto-char (point-min)))
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451 ;; Quote all "From " lines in the article.
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452 (forward-line 1)
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453 (while (re-search-forward delim nil t)
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454 (beginning-of-line)
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455 (insert "> "))
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456 (nnmail-insert-lines)
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457 (nnmail-insert-xref group-art)
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458 (nnmbox-insert-newsgroup-line group-art)
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459 (run-hooks 'nnmail-prepare-save-mail-hook)
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460 (run-hooks 'nnmbox-prepare-save-mail-hook)
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461 group-art))
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462
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463 (defun nnmbox-insert-newsgroup-line (group-art)
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464 (save-excursion
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465 (goto-char (point-min))
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16
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466 (when (search-forward "\n\n" nil t)
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467 (forward-char -1)
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468 (while group-art
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469 (insert (format "X-Gnus-Newsgroup: %s:%d %s\n"
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470 (caar group-art) (cdar group-art)
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471 (current-time-string)))
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472 (setq group-art (cdr group-art))))
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0
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473 t))
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474
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475 (defun nnmbox-active-number (group)
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476 ;; Find the next article number in GROUP.
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477 (let ((active (cadr (assoc group nnmbox-group-alist))))
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478 (if active
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479 (setcdr active (1+ (cdr active)))
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480 ;; This group is new, so we create a new entry for it.
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481 ;; This might be a bit naughty... creating groups on the drop of
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482 ;; a hat, but I don't know...
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16
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483 (push (list group (setq active (cons 1 1)))
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484 nnmbox-group-alist))
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0
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485 (cdr active)))
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486
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16
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487 (defun nnmbox-create-mbox ()
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488 (when (not (file-exists-p nnmbox-mbox-file))
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489 (nnmail-write-region 1 1 nnmbox-mbox-file t 'nomesg)))
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490
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0
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491 (defun nnmbox-read-mbox ()
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492 (nnmail-activate 'nnmbox)
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16
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493 (nnmbox-create-mbox)
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0
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494 (if (and nnmbox-mbox-buffer
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495 (buffer-name nnmbox-mbox-buffer)
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496 (save-excursion
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497 (set-buffer nnmbox-mbox-buffer)
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2
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498 (= (buffer-size) (nnheader-file-size nnmbox-mbox-file))))
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0
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499 ()
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500 (save-excursion
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501 (let ((delim (concat "^" message-unix-mail-delimiter))
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502 (alist nnmbox-group-alist)
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503 start end number)
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504 (set-buffer (setq nnmbox-mbox-buffer
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505 (nnheader-find-file-noselect
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506 nnmbox-mbox-file nil 'raw)))
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507 (buffer-disable-undo (current-buffer))
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508
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509 ;; Go through the group alist and compare against
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510 ;; the mbox file.
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511 (while alist
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512 (goto-char (point-max))
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513 (when (and (re-search-backward
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514 (format "^X-Gnus-Newsgroup: %s:\\([0-9]+\\) "
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515 (caar alist)) nil t)
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516 (>= (setq number
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517 (string-to-number
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518 (buffer-substring
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519 (match-beginning 1) (match-end 1))))
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520 (cdadar alist)))
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521 (setcdr (cadar alist) (1+ number)))
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|
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522 (setq alist (cdr alist)))
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523
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524 (goto-char (point-min))
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525 (while (re-search-forward delim nil t)
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526 (setq start (match-beginning 0))
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16
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527 (when (not (search-forward "\nX-Gnus-Newsgroup: "
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528 (save-excursion
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529 (setq end
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|
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530 (or
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531 (and
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532 (re-search-forward delim nil t)
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533 (match-beginning 0))
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534 (point-max))))
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535 t))
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536 (save-excursion
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537 (save-restriction
|
|
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538 (narrow-to-region start end)
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|
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539 (nnmbox-save-mail
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|
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540 (nnmail-article-group 'nnmbox-active-number)))))
|
|
0
|
541 (goto-char end))))))
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542
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543 (provide 'nnmbox)
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544
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545 ;;; nnmbox.el ends here
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