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1 ;;; Mouse related functions and commands
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2 ;;; Copyright (C) 1995 Kyle E. Jones
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3 ;;;
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4 ;;; This program is free software; you can redistribute it and/or modify
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5 ;;; it under the terms of the GNU General Public License as published by
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6 ;;; the Free Software Foundation; either version 1, or (at your option)
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7 ;;; any later version.
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8 ;;;
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9 ;;; This program is distributed in the hope that it will be useful,
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10 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 ;;; GNU General Public License for more details.
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13 ;;;
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14 ;;; You should have received a copy of the GNU General Public License
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15 ;;; along with this program; if not, write to the Free Software
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16 ;;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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17
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18 (provide 'vm-mouse)
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19
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20 (defun vm-mouse-fsfemacs-mouse-p ()
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21 (and (vm-fsfemacs-19-p)
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22 (fboundp 'set-mouse-position)))
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23
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24 (defun vm-mouse-xemacs-mouse-p ()
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25 (and (vm-xemacs-p)
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26 (fboundp 'set-mouse-position)))
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27
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28 (defun vm-mouse-set-mouse-track-highlight (start end)
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29 (cond ((fboundp 'make-overlay)
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30 (let ((o (make-overlay start end)))
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31 (overlay-put o 'mouse-face 'highlight)))
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32 ((fboundp 'make-extent)
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33 (let ((o (make-extent start end)))
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34 (set-extent-property o 'highlight t)))))
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35
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36 (defun vm-mouse-button-2 (event)
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37 (interactive "e")
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38 ;; go to where the event occurred
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39 (cond ((vm-mouse-xemacs-mouse-p)
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40 (set-buffer (window-buffer (event-window event)))
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41 (and (event-point event) (goto-char (event-point event))))
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42 ((vm-mouse-fsfemacs-mouse-p)
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43 (set-buffer (window-buffer (posn-window (event-start event))))
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44 (goto-char (posn-point (event-start event)))))
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45 ;; now dispatch depending on where we are
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46 (cond ((eq major-mode 'vm-summary-mode)
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47 (mouse-set-point event)
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48 (beginning-of-line)
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49 (if (let ((vm-follow-summary-cursor t))
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50 (vm-follow-summary-cursor))
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51 (progn
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52 (vm-select-folder-buffer)
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53 (vm-preview-current-message))
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54 (setq this-command 'vm-scroll-forward)
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55 (call-interactively 'vm-scroll-forward)))
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56 ((memq major-mode '(vm-mode vm-virtual-mode))
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57 (cond ((and (vm-mouse-fsfemacs-mouse-p) vm-url-browser)
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58 (vm-mouse-popup-or-select event))))))
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59
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60 (defun vm-mouse-button-3 (event)
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61 (interactive "e")
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62 (if vm-use-menus
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63 (progn
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64 ;; go to where the event occurred
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65 (cond ((vm-mouse-xemacs-mouse-p)
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66 (set-buffer (window-buffer (event-window event)))
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67 (and (event-point event) (goto-char (event-point event))))
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68 ((vm-mouse-fsfemacs-mouse-p)
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69 (set-buffer (window-buffer (posn-window (event-start event))))
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70 (goto-char (posn-point (event-start event)))))
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71 ;; now dispatch depending on where we are
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72 (cond ((eq major-mode 'vm-summary-mode)
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73 (vm-menu-popup-mode-menu event))
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74 ((eq major-mode 'vm-mode)
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75 (vm-menu-popup-context-menu event))
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76 ((eq major-mode 'vm-virtual-mode)
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77 (vm-menu-popup-context-menu event))
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78 ((eq major-mode 'mail-mode)
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79 (vm-menu-popup-mode-menu event))))))
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80
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81 (defun vm-mouse-3-help (object)
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82 "Use mouse button 3 to see a menu of options.")
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83
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84 (defun vm-mouse-get-mouse-track-string (event)
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85 (save-excursion
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86 ;; go to where the event occurred
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87 (cond ((vm-mouse-xemacs-mouse-p)
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88 (set-buffer (window-buffer (event-window event)))
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89 (and (event-point event) (goto-char (event-point event))))
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90 ((vm-mouse-fsfemacs-mouse-p)
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91 (set-buffer (window-buffer (posn-window (event-start event))))
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92 (goto-char (posn-point (event-start event)))))
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93 (cond ((fboundp 'overlays-at)
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94 (let ((o-list (overlays-at (point)))
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95 (string nil))
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96 (while o-list
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97 (if (overlay-get (car o-list) 'mouse-face)
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98 (setq string (vm-buffer-substring-no-properties
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99 (overlay-start (car o-list))
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100 (overlay-end (car o-list)))
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101 o-list nil)
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102 (setq o-list (cdr o-list))))
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103 string ))
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104 ((fboundp 'extent-at)
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105 (let ((e (extent-at (point) nil 'highlight)))
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106 (if e
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107 (buffer-substring (extent-start-position e)
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108 (extent-end-position e))
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109 nil)))
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110 (t nil))))
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111
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112 (defun vm-mouse-popup-or-select (event)
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113 (interactive "e")
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114 (cond ((vm-mouse-fsfemacs-mouse-p)
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115 (set-buffer (window-buffer (posn-window (event-start event))))
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116 (goto-char (posn-point (event-start event)))
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117 (let (o-list o menu (found nil))
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118 (setq o-list (overlays-at (point)))
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119 (while (and o-list (not found))
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120 (cond ((overlay-get (car o-list) 'vm-url)
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121 (setq found t)
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122 (vm-mouse-send-url-at-event event)))
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123 (setq o-list (cdr o-list)))
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124 (and (not found) (vm-menu-popup-context-menu event))))
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125 ;; The XEmacs code is not actually used now, since all
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126 ;; selectable objects are handled by an extent keymap
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127 ;; binding that points to a more specific function. But
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128 ;; this might come in handy later if I want selectable
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129 ;; objects that don't have an extent attached.
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130 ((vm-mouse-xemacs-mouse-p)
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131 (set-buffer (window-buffer (event-window event)))
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132 (and (event-point event) (goto-char (event-point event)))
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133 (if (extent-at (point) (current-buffer) 'vm-url)
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134 (vm-mouse-send-url-at-event event)
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135 (vm-menu-popup-context-menu event)))))
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136
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137 (defun vm-mouse-send-url-at-event (event)
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138 (interactive "e")
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139 (cond ((vm-mouse-xemacs-mouse-p)
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140 (set-buffer (window-buffer (event-window event)))
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141 (and (event-point event) (goto-char (event-point event)))
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142 (vm-mouse-send-url-at-position (event-point event)))
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143 ((vm-mouse-fsfemacs-mouse-p)
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144 (set-buffer (window-buffer (posn-window (event-start event))))
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145 (goto-char (posn-point (event-start event)))
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146 (vm-mouse-send-url-at-position (posn-point (event-start event))))))
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147
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148 (defun vm-mouse-send-url-at-position (pos &optional browser)
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149 (cond ((vm-mouse-xemacs-mouse-p)
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150 (let ((e (extent-at pos (current-buffer) 'vm-url))
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151 url)
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152 (if (null e)
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153 nil
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154 (setq url (buffer-substring (extent-start-position e)
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155 (extent-end-position e)))
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156 (vm-mouse-send-url url browser))))
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157 ((vm-mouse-fsfemacs-mouse-p)
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158 (let (o-list url o)
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159 (setq o-list (overlays-at pos))
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160 (while (and o-list (null (overlay-get (car o-list) 'vm-url)))
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161 (setq o-list (cdr o-list)))
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162 (if (null o-list)
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163 nil
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164 (setq o (car o-list))
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165 (setq url (vm-buffer-substring-no-properties
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166 (overlay-start o)
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167 (overlay-end o)))
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168 (vm-mouse-send-url url browser))))))
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169
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170 (defun vm-mouse-send-url (url &optional browser)
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171 (let ((browser (or browser vm-url-browser)))
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172 (cond ((symbolp browser)
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173 (funcall browser url))
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174 ((stringp browser)
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175 (vm-unsaved-message "Sending URL to %s..." browser)
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176 (vm-run-background-command browser url)
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177 (vm-unsaved-message "Sending URL to %s... done" browser)))))
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178
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179 (defun vm-mouse-send-url-to-netscape (url &optional new-netscape new-window)
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180 (vm-unsaved-message "Sending URL to Netscape...")
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181 (if new-netscape
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182 (vm-run-background-command vm-netscape-program url)
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183 (or (equal 0 (vm-run-command vm-netscape-program "-remote"
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184 (concat "openURL(" url
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185 (if new-window ", new-window" "")
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186 ")")))
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187 (vm-mouse-send-url-to-netscape url t new-window)))
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188 (vm-unsaved-message "Sending URL to Netscape... done"))
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189
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190 (defun vm-mouse-send-url-to-mosaic (url &optional new-mosaic new-window)
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191 (vm-unsaved-message "Sending URL to Mosaic...")
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192 (if (null new-mosaic)
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193 (let ((pid-file "~/.mosaicpid")
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194 (work-buffer " *mosaic work*")
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195 pid)
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196 (cond ((file-exists-p pid-file)
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197 (set-buffer (get-buffer-create work-buffer))
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198 (erase-buffer)
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199 (insert-file-contents pid-file)
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200 (setq pid (int-to-string (string-to-int (buffer-string))))
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201 (erase-buffer)
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202 (insert (if new-window "newwin" "goto") ?\n)
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203 (insert url ?\n)
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204 (write-region (point-min) (point-max)
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205 (concat "/tmp/Mosaic." pid)
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206 nil 0)
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207 (set-buffer-modified-p nil)
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208 (kill-buffer work-buffer)))
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209 (cond ((or (null pid)
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210 (not (equal 0 (vm-run-command "kill" "-USR1" pid))))
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211 (setq new-mosaic t)))))
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212 (if new-mosaic
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213 (vm-run-background-command vm-mosaic-program url))
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214 (vm-unsaved-message "Sending URL to Mosaic... done"))
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215
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216
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217 (defun vm-mouse-install-mouse ()
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218 (cond ((vm-mouse-xemacs-mouse-p)
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219 (if (null (lookup-key vm-mode-map 'button2))
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220 (define-key vm-mode-map 'button2 'vm-mouse-button-2)))
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221 ((vm-mouse-fsfemacs-mouse-p)
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222 (if (null (lookup-key vm-mode-map [mouse-2]))
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223 (define-key vm-mode-map [mouse-2] 'vm-mouse-button-2))
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224 (if (null (lookup-key vm-mode-map [down-mouse-3]))
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225 (progn
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226 (define-key vm-mode-map [mouse-3] 'ignore)
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227 (define-key vm-mode-map [down-mouse-3] 'vm-mouse-button-3))))))
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228
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229 (defun vm-run-background-command (command &rest arg-list)
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230 (apply (function call-process) command nil 0 nil arg-list))
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231
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232 (defun vm-run-command (command &rest arg-list)
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233 (apply (function call-process) command nil nil nil arg-list))
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234
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235 ;; stupid yammering compiler
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236 (defvar vm-mouse-read-file-name-prompt)
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237 (defvar vm-mouse-read-file-name-dir)
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238 (defvar vm-mouse-read-file-name-default)
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239 (defvar vm-mouse-read-file-name-must-match)
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240 (defvar vm-mouse-read-file-name-initial)
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241 (defvar vm-mouse-read-file-name-history)
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242 (defvar vm-mouse-read-file-name-return-value)
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243
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244 (defun vm-mouse-read-file-name (prompt &optional dir default
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245 must-match initial history)
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246 "Like read-file-name, except uses a mouse driven interface.
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247 HISTORY argument is ignored."
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248 (save-excursion
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249 (or dir (setq dir default-directory))
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250 (set-buffer (generate-new-buffer " *Files*"))
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251 (use-local-map (make-sparse-keymap))
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252 (setq buffer-read-only t
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253 default-directory dir)
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254 (make-local-variable 'vm-mouse-read-file-name-prompt)
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255 (make-local-variable 'vm-mouse-read-file-name-dir)
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256 (make-local-variable 'vm-mouse-read-file-name-default)
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257 (make-local-variable 'vm-mouse-read-file-name-must-match)
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258 (make-local-variable 'vm-mouse-read-file-name-initial)
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259 (make-local-variable 'vm-mouse-read-file-name-history)
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260 (make-local-variable 'vm-mouse-read-file-name-return-value)
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261 (setq vm-mouse-read-file-name-prompt prompt)
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262 (setq vm-mouse-read-file-name-dir dir)
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263 (setq vm-mouse-read-file-name-default default)
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264 (setq vm-mouse-read-file-name-must-match must-match)
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265 (setq vm-mouse-read-file-name-initial initial)
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266 (setq vm-mouse-read-file-name-history history)
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267 (setq vm-mouse-read-file-name-prompt prompt)
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268 (setq vm-mouse-read-file-name-return-value nil)
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269 (save-excursion
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270 (vm-goto-new-frame 'completion))
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271 (switch-to-buffer (current-buffer))
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272 (vm-mouse-read-file-name-event-handler)
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273 (save-excursion
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274 (local-set-key "\C-g" 'vm-mouse-read-file-name-quit-handler)
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275 (recursive-edit))
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276 ;; buffer could have been killed
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277 (and (boundp 'vm-mouse-read-file-name-return-value)
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278 (prog1
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279 vm-mouse-read-file-name-return-value
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280 (kill-buffer (current-buffer))))))
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281
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282 (defun vm-mouse-read-file-name-event-handler (&optional string)
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283 (let ((key-doc "Click here for keyboard interface.")
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284 start list)
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285 (if string
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286 (cond ((equal string key-doc)
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287 (condition-case nil
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288 (save-excursion
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289 (save-excursion
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290 (let ((vm-mutable-frames t))
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291 (vm-delete-windows-or-frames-on (current-buffer))))
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292 (setq vm-mouse-read-file-name-return-value
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293 (vm-keyboard-read-file-name
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294 vm-mouse-read-file-name-prompt
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295 vm-mouse-read-file-name-dir
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296 vm-mouse-read-file-name-default
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297 vm-mouse-read-file-name-must-match
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298 vm-mouse-read-file-name-initial
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299 vm-mouse-read-file-name-history))
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300 (vm-mouse-read-file-name-quit-handler t))
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301 (quit (vm-mouse-read-file-name-quit-handler))))
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302 ((file-directory-p string)
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303 (setq default-directory (expand-file-name string)))
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304 (t (setq vm-mouse-read-file-name-return-value
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305 (expand-file-name string))
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306 (vm-mouse-read-file-name-quit-handler t))))
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307 (setq buffer-read-only nil)
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308 (erase-buffer)
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309 (setq start (point))
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310 (insert vm-mouse-read-file-name-prompt)
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311 (vm-set-region-face start (point) 'bold)
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312 (cond ((and (not string) vm-mouse-read-file-name-default)
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313 (setq start (point))
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314 (insert vm-mouse-read-file-name-default)
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315 (vm-mouse-set-mouse-track-highlight start (point)))
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316 ((not string) nil)
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317 (t (insert default-directory)))
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318 (insert ?\n ?\n)
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319 (setq start (point))
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320 (insert key-doc)
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321 (vm-mouse-set-mouse-track-highlight start (point))
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322 (vm-set-region-face start (point) 'italic)
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323 (insert ?\n ?\n)
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324 (setq list (directory-files default-directory))
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325 (vm-show-list list 'vm-mouse-read-file-name-event-handler)
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326 (setq buffer-read-only t)))
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327
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328 (defun vm-mouse-read-file-name-quit-handler (&optional normal-exit)
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329 (interactive)
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330 (let ((vm-mutable-frames t))
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331 (vm-delete-windows-or-frames-on (current-buffer))
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332 (if normal-exit
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333 (throw 'exit nil)
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334 (throw 'exit t))))
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335
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336 (defvar vm-mouse-read-string-prompt)
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337 (defvar vm-mouse-read-string-completion-list)
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338 (defvar vm-mouse-read-string-multi-word)
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339 (defvar vm-mouse-read-string-return-value)
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340
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341 (defun vm-mouse-read-string (prompt completion-list &optional multi-word)
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342 (save-excursion
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343 (set-buffer (generate-new-buffer " *Choices*"))
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344 (use-local-map (make-sparse-keymap))
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345 (setq buffer-read-only t)
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346 (make-local-variable 'vm-mouse-read-string-prompt)
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347 (make-local-variable 'vm-mouse-read-string-completion-list)
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348 (make-local-variable 'vm-mouse-read-string-multi-word)
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349 (make-local-variable 'vm-mouse-read-string-return-value)
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350 (setq vm-mouse-read-string-prompt prompt)
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351 (setq vm-mouse-read-string-completion-list completion-list)
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352 (setq vm-mouse-read-string-multi-word multi-word)
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353 (setq vm-mouse-read-string-return-value nil)
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354 (save-excursion
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355 (vm-goto-new-frame 'completion))
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356 (switch-to-buffer (current-buffer))
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357 (vm-mouse-read-string-event-handler)
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358 (save-excursion
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359 (local-set-key "\C-g" 'vm-mouse-read-string-quit-handler)
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360 (recursive-edit))
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361 ;; buffer could have been killed
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362 (and (boundp 'vm-mouse-read-string-return-value)
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363 (prog1
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364 (if (listp vm-mouse-read-string-return-value)
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365 (mapconcat 'identity vm-mouse-read-string-return-value " ")
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366 vm-mouse-read-string-return-value)
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367 (kill-buffer (current-buffer))))))
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368
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369 (defun vm-mouse-read-string-event-handler (&optional string)
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370 (let ((key-doc "Click here for keyboard interface.")
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371 (bs-doc " .... to go back one word.")
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372 (done-doc " .... to when you're done.")
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373 start list)
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374 (if string
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375 (cond ((equal string key-doc)
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376 (condition-case nil
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377 (save-excursion
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378 (save-excursion
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379 (let ((vm-mutable-frames t))
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380 (vm-delete-windows-or-frames-on (current-buffer))))
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381 (setq vm-mouse-read-string-return-value
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382 (vm-keyboard-read-string
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383 vm-mouse-read-string-prompt
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384 vm-mouse-read-string-completion-list
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385 vm-mouse-read-string-multi-word))
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386 (vm-mouse-read-string-quit-handler t))
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387 (quit (vm-mouse-read-string-quit-handler))))
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388 ((equal string bs-doc)
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389 (setq vm-mouse-read-string-return-value
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390 (nreverse
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391 (cdr
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392 (nreverse vm-mouse-read-string-return-value)))))
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393 ((equal string done-doc)
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394 (vm-mouse-read-string-quit-handler t))
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395 (t (setq vm-mouse-read-string-return-value
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396 (nconc vm-mouse-read-string-return-value
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397 (list string)))
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398 (if (null vm-mouse-read-string-multi-word)
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399 (vm-mouse-read-string-quit-handler t)))))
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400 (setq buffer-read-only nil)
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401 (erase-buffer)
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402 (setq start (point))
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403 (insert vm-mouse-read-string-prompt)
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404 (vm-set-region-face start (point) 'bold)
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405 (insert (mapconcat 'identity vm-mouse-read-string-return-value " "))
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406 (insert ?\n ?\n)
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407 (setq start (point))
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408 (insert key-doc)
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409 (vm-mouse-set-mouse-track-highlight start (point))
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410 (vm-set-region-face start (point) 'italic)
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411 (insert ?\n)
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412 (if vm-mouse-read-string-multi-word
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413 (progn
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414 (setq start (point))
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415 (insert bs-doc)
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416 (vm-mouse-set-mouse-track-highlight start (point))
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417 (vm-set-region-face start (point) 'italic)
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418 (insert ?\n)
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419 (setq start (point))
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420 (insert done-doc)
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421 (vm-mouse-set-mouse-track-highlight start (point))
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422 (vm-set-region-face start (point) 'italic)
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423 (insert ?\n)))
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424 (insert ?\n)
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425 (vm-show-list vm-mouse-read-string-completion-list
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426 'vm-mouse-read-string-event-handler)
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427 (setq buffer-read-only t)))
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428
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429 (defun vm-mouse-read-string-quit-handler (&optional normal-exit)
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430 (interactive)
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431 (let ((vm-mutable-frames t))
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432 (vm-delete-windows-or-frames-on (current-buffer))
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433 (if normal-exit
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434 (throw 'exit nil)
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435 (throw 'exit t))))
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