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1 ;;; nndb.el --- nndb access for Gnus
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2 ;; Copyright (C) 1996 Free Software Foundation, Inc.
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3
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4 ;; Author: Kai Grossjohann <grossjohann@ls6.informatik.uni-dortmund.de>
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5 ;; Keywords: 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 ;; I have shamelessly snarfed the code of nntp.el from sgnus.
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27 ;; Kai
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28
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29
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30 ;;-
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31 ;; Register nndb with known select methods.
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32
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33 (setq gnus-valid-select-methods
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34 (cons '("nndb" mail address respool prompt-address)
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35 gnus-valid-select-methods))
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36
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37
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38 ;;; Code:
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39
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40 (require 'nnheader)
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41 (require 'nntp)
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42 (eval-when-compile (require 'cl))
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43
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44 (eval-and-compile
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45 (unless (fboundp 'open-network-stream)
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46 (require 'tcp)))
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47
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48 (eval-when-compile (require 'cl))
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49
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50 (eval-and-compile
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51 (autoload 'news-setup "rnewspost")
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52 (autoload 'news-reply-mode "rnewspost")
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53 (autoload 'cancel-timer "timer")
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54 (autoload 'telnet "telnet" nil t)
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55 (autoload 'telnet-send-input "telnet" nil t)
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56 (autoload 'timezone-parse-date "timezone"))
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57
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58 ;; Declare nndb as derived from nntp
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59
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60 (nnoo-declare nndb nntp)
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61
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62 ;; Variables specific to nndb
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63
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64 ;;- currently not used but just in case...
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65 (defvoo nndb-deliver-program "nndel"
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66 "*The program used to put a message in an NNDB group.")
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67
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68 ;; Variables copied from nntp
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69
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70 (defvoo nndb-server-opened-hook '(nntp-send-authinfo-from-file)
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71 "Like nntp-server-opened-hook."
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72 nntp-server-opened-hook)
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73
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74 ;(defvoo nndb-rlogin-parameters '("telnet" "${NNDBSERVER:=localhost}" "9000")
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75 ; "*Parameters to nndb-open-login. Like nntp-rlogin-parameters."
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76 ; nntp-rlogin-parameters)
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77
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78 ;(defvoo nndb-rlogin-user-name nil
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79 ; "*User name for rlogin connect method."
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80 ; nntp-rlogin-user-name)
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81
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82 (defvoo nndb-address "localhost"
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83 "*The name of the NNDB server."
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84 nntp-address)
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85
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86 (defvoo nndb-port-number 9000
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87 "*Port number to connect to."
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88 nntp-port-number)
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89
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90 ;(defvoo nndb-current-group ""
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91 ; "Like nntp-current-group."
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92 ; nntp-current-group)
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93
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94 (defvoo nndb-status-string nil "" nntp-status-string)
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95
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96
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97
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98 (defconst nndb-version "nndb 0.3"
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99 "Version numbers of this version of NNDB.")
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100
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101
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102 ;;; Interface functions.
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103
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104 (nnoo-define-basics nndb)
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105
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106 ;; Import other stuff from nntp as is.
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107
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108 (nnoo-import nndb
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109 (nntp))
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110
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111 ;;- maybe this should be mail??
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112 ;;-(defun nndb-request-type (group &optional article)
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113 ;;- 'news)
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114
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115 ;;------------------------------------------------------------------
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116 ;;- only new stuff below
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117
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118 ; nndb-request-update-info does not exist and is not needed
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119
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120 ; nndb-request-update-mark does not exist and is not needed
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121
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122 ; nndb-request-scan does not exist
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123 ; get new mail from somewhere -- maybe this is not needed?
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124 ; --> todo
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125
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126 (deffoo nndb-request-create-group (group &optional server)
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127 "Creates a group if it doesn't exist yet."
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128 (nntp-send-command "^[23].*\n" "MKGROUP" group))
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129
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130 ; todo -- use some other time than the creation time of the article
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131 ; best is time since article has been marked as expirable
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132 (deffoo nndb-request-expire-articles
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133 (articles &optional group server force)
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134 "Expires ARTICLES from GROUP on SERVER.
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135 If FORCE, delete regardless of exiration date, otherwise use normal
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136 expiry mechanism."
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137 (let (msg art)
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138 (nntp-possibly-change-server group server) ;;-
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139 (while articles
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140 (setq art (pop articles))
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141 (nntp-send-command "^\\([23]\\|^423\\).*\n" "DATE" art)
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142 (setq msg (nndb-status-message))
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143 ;; CCC we shouldn't be using the variable nndb-status-string?
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144 (if (string-match "^423" (nnheader-get-report 'nndb))
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145 ()
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146 (or (string-match "\\([0-9]+\\) \\([0-9]+\\)$" msg)
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147 (error "Not a valid response for DATE command: %s"
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148 msg))
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149 (if (nnmail-expired-article-p
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150 group
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151 (list (string-to-int
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152 (substring msg (match-beginning 1) (match-end 1)))
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153 (string-to-int
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154 (substring msg (match-beginning 2) (match-end 2))))
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155 force)
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156 (nnheader-message 5 "Deleting article %s in %s..."
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157 art group)
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158 (nntp-send-command "^[23].*\n" "DELETE" art))))))
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159
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160 (deffoo nndb-request-move-article
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161 (article group server accept-form &optional last)
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162 "Move ARTICLE (a number) from GROUP on SERVER.
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163 Evals ACCEPT-FORM in current buffer, where the article is.
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164 Optional LAST is ignored."
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165 (let ((artbuf (get-buffer-create " *nndb move*"))
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166 result)
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167 (and
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168 (nndb-request-article article group server artbuf)
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169 (save-excursion
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170 (set-buffer artbuf)
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171 (setq result (eval accept-form))
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172 (kill-buffer (current-buffer))
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173 result)
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174 (nndb-request-expire-articles (list article)
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175 group
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176 server
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177 t))
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178 result))
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179
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180 (deffoo nndb-request-accept-article (group server &optional last)
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181 "The article in the current buffer is put into GROUP."
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182 (nntp-possibly-change-server group server) ;;-
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183 (let (art statmsg)
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184 (when (nntp-send-command "^[23].*\r?\n" "ACCEPT" group)
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185 (nnheader-insert "")
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186 (nntp-encode-text)
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187 (nntp-send-region-to-server (point-min) (point-max))
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188 ;; 1.2a NNTP's post command is buggy. "^M" (\r) is not
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189 ;; appended to end of the status message.
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190 (nntp-wait-for-response "^[23].*\n")
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191 (setq statmsg (nntp-status-message))
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192 (or (string-match "^\\([0-9]+\\)" statmsg)
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193 (error "nndb: %s" statmsg))
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194 (setq art (substring statmsg
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195 (match-beginning 1)
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196 (match-end 1)))
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197 (message "nndb: accepted %s" art)
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198 (list art))))
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199
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200 (deffoo nndb-request-replace-article (article group buffer)
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201 "ARTICLE is the number of the article in GROUP to be replaced
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202 with the contents of the BUFFER."
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203 (set-buffer buffer)
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204 (let (art statmsg)
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205 (when (nntp-send-command "^[23].*\r?\n" "REPLACE" (int-to-string article))
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206 (nnheader-insert "")
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207 (nntp-encode-text)
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208 (nntp-send-region-to-server (point-min) (point-max))
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209 ;; 1.2a NNTP's post command is buggy. "^M" (\r) is not
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210 ;; appended to end of the status message.
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211 (nntp-wait-for-response "^[23].*\n")
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212 ; (setq statmsg (nntp-status-message))
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213 ; (or (string-match "^\\([0-9]+\\)" statmsg)
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214 ; (error "nndb: %s" statmsg))
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215 ; (setq art (substring statmsg
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216 ; (match-beginning 1)
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217 ; (match-end 1)))
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218 ; (message "nndb: replaced %s" art)
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219 (list (int-to-string article)))))
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220
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221 ; nndb-request-delete-group does not exist
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222 ; todo -- maybe later
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223
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224 ; nndb-request-rename-group does not exist
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225 ; todo -- maybe later
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226
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227 (provide 'nndb)
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228
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229
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