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4
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1 ;; Simple SMTP protocol (RFC 821) for sending mail
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2
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3 ;; Copyright (C) 1995, 1996 Free Software Foundation, Inc.
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4
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5 ;; Author: Tomoji Kagatani <kagatani@rbc.ncl.omron.co.jp>
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6 ;; Maintainer: Brian D. Carlstrom <bdc@ai.mit.edu>
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7 ;; Keywords: mail
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8
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9 ;; This file is part of XEmacs.
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10
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11 ;; XEmacs is free software; you can redistribute it and/or modify it
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12 ;; under the terms of the GNU General Public License as published by
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13 ;; the Free Software Foundation; either version 2, or (at your option)
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14 ;; any later version.
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15
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16 ;; XEmacs is distributed in the hope that it will be useful, but
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17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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19 ;; General Public License for more details.
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20
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21 ;; You should have received a copy of the GNU General Public License
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22 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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23 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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24 ;; 02111-1307, USA.
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25
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26 ;;; Synched up with: FSF 19.34.
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27
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28 ;;; Commentary:
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29
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30 ;; Send Mail to smtp host from smtpmail temp buffer.
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31
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32 ;; Please add these lines in your .emacs(_emacs).
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33 ;;
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34 ;;(setq send-mail-function 'smtpmail-send-it)
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35 ;;(setq smtpmail-default-smtp-server "YOUR SMTP HOST")
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36 ;;(setq smtpmail-smtp-service "smtp")
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37 ;;(setq smtpmail-local-domain "YOUR DOMAIN NAME")
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38 ;;(setq smtpmail-debug-info t)
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39 ;;(load-library "smtpmail")
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40 ;;(setq smtpmail-code-conv-from nil)
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41 ;;(setq user-full-name "YOUR NAME HERE")
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42
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43 ;;; Code:
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44
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45 (require 'sendmail)
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46
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47 ;;;
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48 (defvar smtpmail-default-smtp-server nil
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49 "*Specify default SMTP server.")
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50
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51 (defvar smtpmail-smtp-server
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52 (or (getenv "SMTPSERVER") smtpmail-default-smtp-server)
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53 "*The name of the host running SMTP server.")
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54
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55 (defvar smtpmail-smtp-service 25
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56 "*SMTP service port number. smtp or 25 .")
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57
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58 (defvar smtpmail-local-domain nil
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59 "*Local domain name without a host name.
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60 If the function (system-name) returns the full internet address,
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61 don't define this value.")
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62
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63 (defvar smtpmail-debug-info nil
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64 "*smtpmail debug info printout. messages and process buffer.")
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65
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66 (defvar smtpmail-code-conv-from nil ;; *junet*
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67 "*smtpmail code convert from this code to *internal*..for tiny-mime..")
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68
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69 ;;;
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70 ;;;
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71 ;;;
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72
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73 (defun smtpmail-send-it ()
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74 (require 'mail-utils)
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75 (let ((errbuf (if mail-interactive
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76 (generate-new-buffer " smtpmail errors")
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77 0))
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78 (tembuf (generate-new-buffer " smtpmail temp"))
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79 (case-fold-search nil)
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80 resend-to-addresses
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81 delimline
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82 (mailbuf (current-buffer)))
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83 (unwind-protect
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84 (save-excursion
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85 (set-buffer tembuf)
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86 (erase-buffer)
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87 (insert-buffer-substring mailbuf)
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88 (goto-char (point-max))
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89 ;; require one newline at the end.
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90 (or (= (preceding-char) ?\n)
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91 (insert ?\n))
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92 ;; Change header-delimiter to be what sendmail expects.
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93 (goto-char (point-min))
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94 (re-search-forward
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95 (concat "^" (regexp-quote mail-header-separator) "\n"))
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96 (replace-match "\n")
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97 (backward-char 1)
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98 (setq delimline (point-marker))
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99 ;; (sendmail-synch-aliases)
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100 (if (and mail-aliases (fboundp expand-mail-aliases)) ; XEmacs
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101 (expand-mail-aliases (point-min) delimline))
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102 (goto-char (point-min))
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103 ;; ignore any blank lines in the header
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104 (while (and (re-search-forward "\n\n\n*" delimline t)
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105 (< (point) delimline))
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106 (replace-match "\n"))
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107 (let ((case-fold-search t))
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108 (goto-char (point-min))
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109 (goto-char (point-min))
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110 (while (re-search-forward "^Resent-to:" delimline t)
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111 (setq resend-to-addresses
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112 (save-restriction
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113 (narrow-to-region (point)
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114 (save-excursion
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115 (end-of-line)
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116 (point)))
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117 (append (mail-parse-comma-list)
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118 resend-to-addresses))))
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119 ;;; Apparently this causes a duplicate Sender.
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120 ;;; ;; If the From is different than current user, insert Sender.
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121 ;;; (goto-char (point-min))
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122 ;;; (and (re-search-forward "^From:" delimline t)
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123 ;;; (progn
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124 ;;; (require 'mail-utils)
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125 ;;; (not (string-equal
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126 ;;; (mail-strip-quoted-names
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127 ;;; (save-restriction
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128 ;;; (narrow-to-region (point-min) delimline)
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129 ;;; (mail-fetch-field "From")))
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130 ;;; (user-login-name))))
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131 ;;; (progn
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132 ;;; (forward-line 1)
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133 ;;; (insert "Sender: " (user-login-name) "\n")))
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134 ;; Don't send out a blank subject line
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135 (goto-char (point-min))
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136 (if (re-search-forward "^Subject:[ \t]*\n" delimline t)
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137 (replace-match ""))
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138 ;; Put the "From:" field in unless for some odd reason
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139 ;; they put one in themselves.
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140 (goto-char (point-min))
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141 (if (not (re-search-forward "^From:" delimline t))
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114
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142 (let* ((login (user-mail-address))
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143 (fullname (user-full-name)))
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144 (cond ((eq mail-from-style 'angles)
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145 (insert "From: " fullname)
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146 (let ((fullname-start (+ (point-min) 6))
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147 (fullname-end (point-marker)))
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148 (goto-char fullname-start)
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149 ;; Look for a character that cannot appear unquoted
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150 ;; according to RFC 822.
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151 (if (re-search-forward "[^- !#-'*+/-9=?A-Z^-~]"
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152 fullname-end 1)
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153 (progn
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154 ;; Quote fullname, escaping specials.
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155 (goto-char fullname-start)
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156 (insert "\"")
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157 (while (re-search-forward "[\"\\]"
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158 fullname-end 1)
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159 (replace-match "\\\\\\&" t))
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160 (insert "\""))))
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161 (insert " <" login ">\n"))
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162 ((eq mail-from-style 'parens)
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163 (insert "From: " login " (")
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164 (let ((fullname-start (point)))
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165 (insert fullname)
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166 (let ((fullname-end (point-marker)))
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167 (goto-char fullname-start)
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168 ;; RFC 822 says \ and nonmatching parentheses
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169 ;; must be escaped in comments.
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170 ;; Escape every instance of ()\ ...
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171 (while (re-search-forward "[()\\]" fullname-end 1)
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172 (replace-match "\\\\\\&" t))
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173 ;; ... then undo escaping of matching parentheses,
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174 ;; including matching nested parentheses.
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175 (goto-char fullname-start)
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176 (while (re-search-forward
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177 "\\(\\=\\|[^\\]\\(\\\\\\\\\\)*\\)\\\\(\\(\\([^\\]\\|\\\\\\\\\\)*\\)\\\\)"
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178 fullname-end 1)
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179 (replace-match "\\1(\\3)" t)
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180 (goto-char fullname-start))))
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181 (insert ")\n"))
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182 ((null mail-from-style)
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183 (insert "From: " login "\n")))))
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184 ;; Insert an extra newline if we need it to work around
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185 ;; Sun's bug that swallows newlines.
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186 (goto-char (1+ delimline))
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187 (if (eval mail-mailer-swallows-blank-line)
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188 (newline))
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189 ;; Find and handle any FCC fields.
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190 (goto-char (point-min))
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191 (if (re-search-forward "^FCC:" delimline t)
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192 (mail-do-fcc delimline))
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193 (if mail-interactive
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194 (save-excursion
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195 (set-buffer errbuf)
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196 (erase-buffer))))
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197 ;;
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198 ;;
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199 ;;
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200 (setq smtpmail-address-buffer (generate-new-buffer "*smtp-mail*"))
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201 (setq smtpmail-recipient-address-list
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202 (or resend-to-addresses
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203 (smtpmail-deduce-address-list tembuf (point-min) delimline)))
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204 (kill-buffer smtpmail-address-buffer)
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205
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206 (smtpmail-do-bcc delimline)
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207
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208 (if (not (null smtpmail-recipient-address-list))
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209 (if (not (smtpmail-via-smtp smtpmail-recipient-address-list tembuf))
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210 (error "Sending failed; SMTP protocol error"))
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211 (error "Sending failed; no recipients"))
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212 )
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213 (kill-buffer tembuf)
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214 (if (bufferp errbuf)
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215 (kill-buffer errbuf)))))
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216
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217
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218 ;(defun smtpmail-via-smtp (host,port,sender,destination,smtpmail-text-buffer)
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219
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220 (defun smtpmail-fqdn ()
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221 (if smtpmail-local-domain
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222 (concat (system-name) "." smtpmail-local-domain)
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223 (system-name)))
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224
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225 (defun smtpmail-via-smtp (recipient smtpmail-text-buffer)
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226 (let ((process nil)
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227 (host smtpmail-smtp-server)
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228 (port smtpmail-smtp-service)
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229 response-code
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230 greeting
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231 process-buffer)
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232 (unwind-protect
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233 (catch 'done
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234 ;; get or create the trace buffer
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235 (setq process-buffer
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236 (get-buffer-create (format "*trace of SMTP session to %s*" host)))
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237
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238 ;; clear the trace buffer of old output
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239 (save-excursion
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240 (set-buffer process-buffer)
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241 (erase-buffer))
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242
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243 ;; open the connection to the server
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244 (setq process (open-network-stream "SMTP" process-buffer host port))
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245 (and (null process) (throw 'done nil))
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246
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247 ;; set the send-filter
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248 (set-process-filter process 'smtpmail-process-filter)
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249
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250 (save-excursion
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251 (set-buffer process-buffer)
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252 (make-local-variable 'smtpmail-read-point)
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253 (setq smtpmail-read-point (point-min))
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254
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255
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256 (if (or (null (car (setq greeting (smtpmail-read-response process))))
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257 (not (integerp (car greeting)))
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258 (>= (car greeting) 400))
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259 (throw 'done nil)
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260 )
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261
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262 ;; HELO
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263 (smtpmail-send-command process (format "HELO %s" (smtpmail-fqdn)))
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264
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265 (if (or (null (car (setq response-code (smtpmail-read-response process))))
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266 (not (integerp (car response-code)))
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267 (>= (car response-code) 400))
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268 (throw 'done nil)
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269 )
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270
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271 ;; MAIL FROM: <sender>
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272 ; (smtpmail-send-command process (format "MAIL FROM:%s@%s" (user-login-name) (smtpmail-fqdn)))
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114
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273 (smtpmail-send-command process (format "MAIL FROM: <%s>" (user-mail-address)))
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4
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274
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275 (if (or (null (car (setq response-code (smtpmail-read-response process))))
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276 (not (integerp (car response-code)))
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277 (>= (car response-code) 400))
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278 (throw 'done nil)
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279 )
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280
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281 ;; RCPT TO: <recipient>
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282 (let ((n 0))
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283 (while (not (null (nth n recipient)))
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284 (smtpmail-send-command process (format "RCPT TO: <%s>" (nth n recipient)))
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285 (setq n (1+ n))
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286
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287 (if (or (null (car (setq response-code (smtpmail-read-response process))))
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288 (not (integerp (car response-code)))
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289 (>= (car response-code) 400))
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290 (throw 'done nil)
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291 )
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292 ))
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293
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294 ;; DATA
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295 (smtpmail-send-command process "DATA")
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296
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297 (if (or (null (car (setq response-code (smtpmail-read-response process))))
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298 (not (integerp (car response-code)))
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299 (>= (car response-code) 400))
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300 (throw 'done nil)
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301 )
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302
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303 ;; Mail contents
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304 (smtpmail-send-data process smtpmail-text-buffer)
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305
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306 ;;DATA end "."
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307 (smtpmail-send-command process ".")
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308
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309 (if (or (null (car (setq response-code (smtpmail-read-response process))))
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310 (not (integerp (car response-code)))
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311 (>= (car response-code) 400))
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312 (throw 'done nil)
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313 )
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314
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315 ;;QUIT
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316 ; (smtpmail-send-command process "QUIT")
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317 ; (and (null (car (smtpmail-read-response process)))
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318 ; (throw 'done nil))
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319 t ))
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320 (if process
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321 (save-excursion
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322 (set-buffer (process-buffer process))
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323 (smtpmail-send-command process "QUIT")
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324 (smtpmail-read-response process)
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325
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326 ; (if (or (null (car (setq response-code (smtpmail-read-response process))))
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327 ; (not (integerp (car response-code)))
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328 ; (>= (car response-code) 400))
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329 ; (throw 'done nil)
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330 ; )
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331 (delete-process process))))))
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332
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333
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334 (defun smtpmail-process-filter (process output)
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335 (save-excursion
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336 (set-buffer (process-buffer process))
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337 (goto-char (point-max))
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338 (insert output)))
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339
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340 (defun smtpmail-read-response (process)
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341 (let ((case-fold-search nil)
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342 (response-string nil)
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343 (response-continue t)
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344 (return-value '(nil ""))
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345 match-end)
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346
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347 ; (setq response-string nil)
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348 ; (setq response-continue t)
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349 ; (setq return-value '(nil ""))
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350
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351 (while response-continue
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352 (goto-char smtpmail-read-point)
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353 (while (not (search-forward "\r\n" nil t))
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354 (accept-process-output process)
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355 (goto-char smtpmail-read-point))
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356
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357 (setq match-end (point))
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358 (if (null response-string)
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359 (setq response-string
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360 (buffer-substring smtpmail-read-point (- match-end 2))))
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361
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362 (goto-char smtpmail-read-point)
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363 (if (looking-at "[0-9]+ ")
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364 (progn (setq response-continue nil)
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365 ; (setq return-value response-string)
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366
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367 (if smtpmail-debug-info
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368 (message response-string))
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369
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370 (setq smtpmail-read-point match-end)
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371 (setq return-value
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372 (cons (string-to-int
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373 (buffer-substring (match-beginning 0) (match-end 0)))
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374 response-string)))
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375
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376 (if (looking-at "[0-9]+-")
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377 (progn (setq smtpmail-read-point match-end)
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378 (setq response-continue t))
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379 (progn
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380 (setq smtpmail-read-point match-end)
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381 (setq response-continue nil)
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382 (setq return-value
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383 (cons nil response-string))
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384 )
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385 )))
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386 (setq smtpmail-read-point match-end)
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387 return-value))
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388
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389
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390 (defun smtpmail-send-command (process command)
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391 (goto-char (point-max))
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392 (if (= (aref command 0) ?P)
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393 (insert "PASS <omitted>\r\n")
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394 (insert command "\r\n"))
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395 (setq smtpmail-read-point (point))
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396 (process-send-string process command)
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397 (process-send-string process "\r\n"))
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398
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399 (defun smtpmail-send-data-1 (process data)
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400 (goto-char (point-max))
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401
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402 (if (not (null smtpmail-code-conv-from))
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403 (setq data (code-convert-string data smtpmail-code-conv-from *internal*)))
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404
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405 (if smtpmail-debug-info
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406 (insert data "\r\n"))
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407
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408 (setq smtpmail-read-point (point))
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409 ;; Escape "." at start of a line
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410 (if (eq (string-to-char data) ?.)
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411 (process-send-string process "."))
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412 (process-send-string process data)
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413 (process-send-string process "\r\n")
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414 )
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415
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416 (defun smtpmail-send-data (process buffer)
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417 (let
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418 ((data-continue t)
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419 (sending-data nil)
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420 this-line
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421 this-line-end)
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422
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423 (save-excursion
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424 (set-buffer buffer)
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425 (goto-char (point-min)))
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426
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427 (while data-continue
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428 (save-excursion
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429 (set-buffer buffer)
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430 (beginning-of-line)
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431 (setq this-line (point))
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432 (end-of-line)
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433 (setq this-line-end (point))
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434 (setq sending-data nil)
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435 (setq sending-data (buffer-substring this-line this-line-end))
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436 (if (/= (forward-line 1) 0)
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437 (setq data-continue nil)))
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438
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439 (smtpmail-send-data-1 process sending-data)
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440 )
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441 )
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442 )
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443
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444
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445 (defun smtpmail-deduce-address-list (smtpmail-text-buffer header-start header-end)
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446 "Get address list suitable for smtp RCPT TO: <address>."
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447 (require 'mail-utils) ;; pick up mail-strip-quoted-names
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448 (let
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449 ((case-fold-search t)
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450 (simple-address-list "")
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451 this-line
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452 this-line-end
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453 addr-regexp)
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454
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455 (unwind-protect
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456 (save-excursion
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457 ;;
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458 (set-buffer smtpmail-address-buffer) (erase-buffer)
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459 (insert-buffer-substring smtpmail-text-buffer header-start header-end)
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460 (goto-char (point-min))
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461 ;; RESENT-* fields should stop processing of regular fields.
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462 (save-excursion
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463 (if (re-search-forward "^RESENT-TO:" header-end t)
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464 (setq addr-regexp "^\\(RESENT-TO:\\|RESENT-CC:\\|RESENT-BCC:\\)")
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465 (setq addr-regexp "^\\(TO:\\|CC:\\|BCC:\\)")))
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466
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467 (while (re-search-forward addr-regexp header-end t)
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468 (replace-match "")
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469 (setq this-line (match-beginning 0))
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470 (forward-line 1)
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471 ;; get any continuation lines
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472 (while (and (looking-at "^[ \t]+") (< (point) header-end))
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473 (forward-line 1))
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474 (setq this-line-end (point-marker))
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475 (setq simple-address-list
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476 (concat simple-address-list " "
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477 (mail-strip-quoted-names (buffer-substring this-line this-line-end))))
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478 )
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479 (erase-buffer)
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480 (insert-string " ")
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481 (insert-string simple-address-list)
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482 (insert-string "\n")
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483 (subst-char-in-region (point-min) (point-max) 10 ? t);; newline --> blank
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484 (subst-char-in-region (point-min) (point-max) ?, ? t);; comma --> blank
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485 (subst-char-in-region (point-min) (point-max) 9 ? t);; tab --> blank
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486
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487 (goto-char (point-min))
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488 ;; tidyness in case hook is not robust when it looks at this
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489 (while (re-search-forward "[ \t]+" header-end t) (replace-match " "))
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490
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491 (goto-char (point-min))
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492 (let (recipient-address-list)
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493 (while (re-search-forward " \\([^ ]+\\) " (point-max) t)
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494 (backward-char 1)
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495 (setq recipient-address-list (cons (buffer-substring (match-beginning 1) (match-end 1))
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496 recipient-address-list))
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497 )
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498 (setq smtpmail-recipient-address-list recipient-address-list))
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499
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500 )
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501 )
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502 )
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503 )
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504
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505
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506 (defun smtpmail-do-bcc (header-end)
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507 "Delete BCC: and their continuation lines from the header area.
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508 There may be multiple BCC: lines, and each may have arbitrarily
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509 many continuation lines."
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510 (let ((case-fold-search t))
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511 (save-excursion (goto-char (point-min))
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512 ;; iterate over all BCC: lines
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513 (while (re-search-forward "^BCC:" header-end t)
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514 (delete-region (match-beginning 0) (progn (forward-line 1) (point)))
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515 ;; get rid of any continuation lines
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516 (while (and (looking-at "^[ \t].*\n") (< (point) header-end))
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517 (replace-match ""))
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518 )
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519 ) ;; save-excursion
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520 ) ;; let
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521 )
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522
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523
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524
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525 (provide 'smtpmail)
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526
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527 ;; smtpmail.el ends here
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