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1 ;;; browse-url.el --- ask a WWW browser to load a URL
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2
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3 ;; Copyright 1995 Free Software Foundation, Inc.
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4
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5 ;; Author: Denis Howe <dbh@doc.ic.ac.uk>
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6 ;; Maintainer: Denis Howe <dbh@doc.ic.ac.uk>
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7 ;; Created: 03 Apr 1995
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8 ;; Version: 0.38 18 Jun 1996
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9 ;; Keywords: hypertext
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10 ;; X-Home page: http://wombat.doc.ic.ac.uk/
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11
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12
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12 ;; This file is part of XEmacs.
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13
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12
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14 ;; XEmacs is free software; you can redistribute it and/or modify it
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15 ;; under the terms of the GNU General Public License as published by
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16 ;; the Free Software Foundation; either version 1, or (at your option)
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17 ;; any later version.
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18
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19 ;; XEmacs is distributed in the hope that it will be useful, but
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20 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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22 ;; General Public License for more details.
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23
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24 ;; You should have received a copy of the GNU General Public License
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25 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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26 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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27 ;; 02111-1307, USA.
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28
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29 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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30 ;;; Commentary:
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31
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32 ;; The latest version of this package should be available from
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33 ;; <URL:http://wombat.doc.ic.ac.uk/emacs/browse-url.el>.
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34
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35 ;; This package provides functions which read a URL (Uniform Resource
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36 ;; Locator) from the minibuffer, defaulting to the URL around point,
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37 ;; and ask a World-Wide Web browser to load it. It can also load the
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38 ;; URL associated with the current buffer. Different browsers use
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39 ;; different methods of remote control so there is one function for
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40 ;; each supported browser. If the chosen browser is not running, it
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41 ;; is started. Currently there is support for:
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42
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43 ;; Function Browser Earliest version
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44 ;; browse-url-netscape Netscape 1.1b1
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45 ;; browse-url-mosaic XMosaic <= 2.4
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46 ;; browse-url-cci XMosaic 2.5
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47 ;; browse-url-w3 w3 0
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48 ;; browse-url-iximosaic IXI Mosaic ?
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49 ;; browse-url-lynx-* Lynx 0
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50 ;; browse-url-grail Grail 0.3b1
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51
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52 ;; Note that versions of Netscape before 1.1b1 did not have remote
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53 ;; control. <URL:http://www.netscape.com/newsref/std/x-remote.html>
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54 ;; and <URL:http://www.netscape.com/info/APIs/>.
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55
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56 ;; Netscape can cache Web pages so it may be necessary to tell it to
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57 ;; reload the current page if it has changed (e.g. if you have edited
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58 ;; it). There is currently no perfect automatic solution to this.
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59
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60 ;; Netscape allows you to specify the id of the window you want to
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61 ;; control but which window DO you want to control and how do you
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62 ;; discover its id?
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63
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64 ;; If using XMosaic before version 2.5, check the definition of
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65 ;; browse-url-usr1-signal below.
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66 ;; <URL:http://www.ncsa.uiuc.edu/SDG/Software/XMosaic/remote-control.html>
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67
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68 ;; XMosaic version 2.5 introduced Common Client Interface allowing you
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69 ;; to control mosaic through Unix sockets.
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70 ;; <URL:http://www.ncsa.uiuc.edu/SDG/Software/XMosaic/CCI/cci-spec.html>
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71
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72 ;; William M. Perry's excellent "w3" WWW browser for
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73 ;; Emacs <URL:ftp://cs.indiana.edu/pub/elisp/w3/>
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74 ;; has a function w3-follow-url-at-point, but that
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75 ;; doesn't let you edit the URL like browse-url.
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76
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77 ;; I recommend Nelson Minar <nelson@santafe.edu>'s excellent
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78 ;; html-helper-mode.el for editing HTML and thank Nelson for
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79 ;; his many useful comments on this code.
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80 ;; <URL:http://www.santafe.edu/~nelson/hhm-beta/>
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81
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82 ;; This package generalises function html-previewer-process in Marc
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83 ;; Andreessen <marca@ncsa.uiuc.edu>'s html-mode (LCD
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84 ;; modes/html-mode.el.Z) and provides better versions of the URL
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85 ;; functions in Michelangelo Grigni <mic@cs.ucsd.edu>'s ffap.el
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86 ;; (find-file-at-point) <URL:ftp://cs.ucsd.edu:/pub/mic/>. The huge
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87 ;; hyperbole package also contains similar functions.
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88
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89 ;; Grail is the freely available WWW browser implemented in Python, a
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90 ;; cool object-oriented freely available interpreted language. Grail
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91 ;; 0.3b1 was the first version to have remote control as distributed.
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92 ;; For more information on Grail see
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93 ;; <URL:http://monty.cnri.reston.va.us/> and for more information on
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94 ;; Python see <url:http://www.python.org/>. Grail support in
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95 ;; browse-url.el written by Barry Warsaw <bwarsaw@python.org>.
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96
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97 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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98 ;; Help!
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99
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100 ;; Can you write and test some code for the Macintrash and Windoze
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101 ;; Netscape remote control APIs? (See the URL above).
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102
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103 ;; Do any other browsers have remote control?
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104
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105 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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106 ;; Installation
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107
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108 ;; Put the following in your ~/.emacs file:
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109 ;;
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110 ;; (autoload 'browse-url-at-point "browse-url"
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111 ;; "Ask a WWW browser to load the URL at or before point." t)
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112 ;; (autoload 'browse-url-at-mouse "browse-url"
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113 ;; "Ask a WWW browser to load a URL clicked with the mouse." t)
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114 ;; (autoload 'browse-url-of-buffer "browse-url"
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115 ;; "Ask a WWW browser to display BUFFER." t)
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116 ;; (autoload 'browse-url-of-file "browse-url"
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117 ;; "Ask a WWW browser to display FILE." t)
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118 ;; (autoload 'browse-url-of-dired-file "browse-url"
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119 ;; "In Dired, ask a WWW browser to display the file named on this line." t)
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120
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121 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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122 ;; Usage
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123
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124 ;; To display the URL at or before point:
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125 ;; M-x browse-url-at-point RET
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126
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127 ;; To display a URL by shift-clicking on it, put this in your ~/.emacs
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128 ;; file:
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129 ;; (global-set-key [S-mouse-1] 'browse-url-at-mouse)
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130
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131 ;; To display the current buffer in a web browser:
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132 ;; M-x browse-url-of-buffer RET
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133
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134 ;; In Dired, to display the file named on the current line:
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135 ;; M-x browse-url-of-dired-file RET
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136
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137 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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138 ;; Customisation (~/.emacs)
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139
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140 ;; To see what variables are available for customization, type
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141 ;; `M-x set-variable browse-url TAB'.
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142
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143 ;; Bind the browse-url commands to keys with the `C-c C-z' prefix
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144 ;; (as used by html-helper-mode):
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145 ;; (global-set-key "\C-c\C-z." 'browse-url-at-point)
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146 ;; (global-set-key "\C-c\C-zb" 'browse-url-of-buffer)
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147 ;; (global-set-key "\C-c\C-zu" 'browse-url)
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148 ;; (global-set-key "\C-c\C-zv" 'browse-url-of-file)
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149 ;; (add-hook 'dired-mode-hook
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150 ;; (function (lambda ()
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151 ;; (local-set-key "\C-c\C-zf" 'browse-url-of-dired-file))))
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152
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153 ;; Browse URLs in mail messages by clicking mouse-2:
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154 ;; (add-hook 'rmail-mode-hook (function (lambda () ; rmail-mode startup
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155 ;; (define-key rmail-mode-map [mouse-2] 'browse-url-at-mouse))))
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156
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157 ;; Browse URLs in Usenet messages by clicking mouse-2:
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158 ;; (eval-after-load "gnus"
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159 ;; '(define-key gnus-article-mode-map [mouse-2] 'browse-url-at-mouse))
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160
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161 ;; Use the Emacs w3 browser when not running under X11:
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162 ;; (or (eq window-system 'x)
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163 ;; (setq browse-url-browser-function 'browse-url-w3))
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164
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165 ;; To always save modified buffers before displaying the file in a browser:
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166 ;; (setq browse-url-save-file t)
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167
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168 ;; To get round the Netscape caching problem, you could EITHER have
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169 ;; write-file in html-helper-mode make Netscape reload the document:
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170 ;;
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171 ;; (autoload 'browse-url-netscape-reload "browse-url"
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172 ;; "Ask a WWW browser to redisplay the current file." t)
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173 ;; (add-hook 'html-helper-mode-hook
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174 ;; (function (lambda ()
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175 ;; (add-hook 'local-write-file-hooks
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176 ;; (function (lambda ()
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177 ;; (let ((local-write-file-hooks))
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178 ;; (save-buffer))
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179 ;; (browse-url-netscape-reload)
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180 ;; t)) ; => file written by hook
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181 ;; t)))) ; append to l-w-f-hooks
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182 ;;
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183 ;; OR have browse-url-of-file ask Netscape to load and then reload the
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184 ;; file:
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185 ;;
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186 ;; (add-hook 'browse-url-of-file-hook 'browse-url-netscape-reload)
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187
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188 ;; You may also want to customise browse-url-netscape-arguments, e.g.
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189 ;; (setq browse-url-netscape-arguments '("-install"))
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190 ;;
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191 ;; or similarly for mosaic.
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192
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193 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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194 ;;; Change Log:
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195
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196 ;; 0.00 03 Apr 1995 Denis Howe <dbh@doc.ic.ac.uk>
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197 ;; Created.
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198
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199 ;; 0.01 04 Apr 1995
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200 ;; All names start with "browse-url-". Added provide.
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201
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202 ;; 0.02 05 Apr 1995
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203 ;; Save file at start of browse-url-of-file.
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204 ;; Use start-process instead of start-process-shell-command.
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205
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206 ;; 0.03 06 Apr 1995
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207 ;; Add browse-url-netscape-reload, browse-url-netscape-send.
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208 ;; browse-url-of-file save file option.
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209
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210 ;; 0.04 08 Apr 1995
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211 ;; b-u-file-url separate function. Change b-u-filename-alist
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212 ;; default.
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213
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214 ;; 0.05 09 Apr 1995
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215 ;; Added b-u-of-file-hook.
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216
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217 ;; 0.06 11 Apr 1995
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218 ;; Improved .emacs suggestions and documentation.
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219
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220 ;; 0.07 13 Apr 1995
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221 ;; Added browse-url-interactive-arg optional prompt.
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222
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223 ;; 0.08 18 Apr 1995
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224 ;; Exclude final "." from browse-url-regexp.
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225
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226 ;; 0.09 21 Apr 1995
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227 ;; Added mouse-set-point to browse-url-interactive-arg.
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228
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229 ;; 0.10 24 Apr 1995
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230 ;; Added Mosaic signal sending variations.
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231 ;; Thanks Brian K Servis <servis@ecn.purdue.edu>.
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232 ;; Don't use xprop for Netscape.
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233
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234 ;; 0.11 25 Apr 1995
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235 ;; Fix reading of ~/.mosaicpid. Thanks Dag.H.Wanvik@kvatro.no.
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236
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237 ;; 0.12 27 Apr 1995
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238 ;; Interactive prefix arg => URL *after* point.
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239 ;; Thanks Michelangelo Grigni <mic@cs.ucsd.edu>.
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240 ;; Added IXI Mosaic support.
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241 ;; Thanks David Karr <dkarr@nmo.gtegsc.com>.
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242
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243 ;; 0.13 28 Apr 1995
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244 ;; Exclude final [,;] from browse-url-regexp.
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245
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246 ;; 0.14 02 May 1995
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247 ;; Provide browser argument variables.
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248
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249 ;; 0.15 07 May 1995
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250 ;; More Netscape options. Thanks Peter Arius
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251 ;; <arius@immd2.informatik.uni-erlangen.de>.
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252
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253 ;; 0.16 17 May 1995
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254 ;; Added browse-url-at-mouse.
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255 ;; Thanks Wayne Mesard <wmesard@sgi.com>
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256
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257 ;; 0.17 27 Jun 1995
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258 ;; Renamed browse-url-at-point to browse-url-url-at-point.
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259 ;; Added browse-url-at-point.
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260 ;; Thanks Jonathan Cano <cano@patch.tandem.com>.
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261
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262 ;; 0.18 16 Aug 1995
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263 ;; Fixed call to browse-url-url-at-point in browse-url-at-point.
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264 ;; Thanks Eric Ding <ericding@San-Jose.ate.slb.com>.
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265
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266 ;; 0.19 24 Aug 1995
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267 ;; Improved documentation.
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268 ;; Thanks Kevin Rodgers <kevin.rodgers@ihs.com>.
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269
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270 ;; 0.20 31 Aug 1995
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271 ;; browse-url-of-buffer to handle file-less buffers.
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272 ;; browse-url-of-dired-file browses current file in dired.
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273 ;; Thanks Kevin Rodgers <kevin.rodgers@ihs.com>.
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274
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275 ;; 0.21 09 Sep 1995
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276 ;; XMosaic CCI functions.
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277 ;; Thanks Marc Furrer <Marc.Furrer@di.epfl.ch>.
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278
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279 ;; 0.22 13 Sep 1995
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280 ;; Fixed new-window documentation and added to browse-url-cci.
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281 ;; Thanks Dilip Sequeira <djs@dcs.ed.ac.uk>.
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282
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283 ;; 0.23 10 Nov 1995
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284 ;; Added b-u-lynx. Thanks Steven L. Baur <steve@miranova.com>.
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285
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286 ;; 0.24 22 Nov 1995
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287 ;; Renamed b-u-netscape command to b-u-netscape-send.
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288 ;; Added b-u-netscape-command variable.
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289
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290 ;; 0.25 03 Dec 1995
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291 ;; Added event-buffer and event-point for XEmacs compatibility.
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292 ;; Thanks Eric Engstrom <engstrom@src.honeywell.com>
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293
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294 ;; 0.26 13 Jan 1996
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295 ;; Changed b-u-lynx to b-u-lynx-xterm, added b-u-lynx-emacs to
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296 ;; run Lynx in an Emacs buffer under terminal-emulator.
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297 ;; Thanks Jari Aalto <jaalto@tre.tele.nokia.fi>
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298
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299 ;; 0.27 27 Feb 1996
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300 ;; Changed event-buffer and event-point from macros to functions.
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301 ;; Other fixes for byte-compilation.
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302
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303 ;; 0.28 07 Mar 1996
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304 ;; browse-url-lynx-emacs uses term.el instead of terminal.el.
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305
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306 ;; 0.29 13 Mar 1996
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307 ;; Added browse-url-CCI-host. Thanks Greg Marr <gregm@WPI.EDU>.
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308
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309 ;; 0.30 23 Mar 1996
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310 ;; Contact/start Netscape in the background.
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311 ;; Thanks Per Abrahamsen <abraham@dina.kvl.dk>
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312
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313 ;; 0.31 28 Apr 1996
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314 ;; Added browse-url command.
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315 ;; Added new-window logic to b-u-interactive-arg.
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316 ;; b-u-file-url checks for EFS path.
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317
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318 ;; 0.32 02 May 1996
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319 ;; Improved b-u-url-at-point matching to supply missing "http://".
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320
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321 ;; 0.33 01 Jun 1996
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322 ;; Jari Aalto <jaalto@tre.tele.nokia.fi> browse-url-lynx-emacs
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323 ;; fix. Thanks Jari.
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324
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325 ;; 0.34 05 Jun 1996
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326 ;; b-u-file-url checks for EFS after alist. Thanks
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327 ;; Jens-U H Petersen <petersen@kurims.kyoto-u.ac.jp>
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328
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329 ;; 0.35 11 Jun 1996
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330 ;; Grail support. Thanks Barry A. Warsaw
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331 ;; <bwarsaw@anthem.cnri.reston.va.us>.
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332
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333 ;; 0.36 12 Jun 1996
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334 ;; Fixed browse-url-looking-at (I hope).
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335
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336 ;; 0.37 15 Jun 1996
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337 ;; b-u-file-url URL-encodes special chars.
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338 ;; Thanks Martin Schwenke <Martin.Schwenke@cs.anu.edu.au>.
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339
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340 ;; 0.38 17 Jun 1996
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341 ;; b-u-file-url encodes fewer chars. Multi-display support for
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342 ;; Netscape. Thanks Richard Mlynarik <mly@adoc.xerox.com>
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343
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344 ;;; Code:
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345
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346 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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347 ;; Variables
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348
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349 (eval-when-compile (require 'dired))
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350
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351 (defvar browse-url-path-regexp
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352 "[^]\t\n \"'()<>[^`{}]*[^]\t\n \"'()<>[^`{}.,;]+"
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353 "A regular expression probably matching the host, path or e-mail
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354 part of a URL.")
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355
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356 (defvar browse-url-short-regexp
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357 (concat "[-A-Za-z0-9.]+" browse-url-path-regexp)
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358 "A regular expression probably matching a URL without an access scheme.
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359 Hostname matching is stricter in this case than for
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360 ``browse-url-regexp''.")
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361
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362 (defvar browse-url-regexp
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363 (concat
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364 "\\(https?://\\|ftp://\\|gopher://\\|telnet://\\|wais://\\|file:/\\|s?news:\\|mailto:\\)"
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365 browse-url-path-regexp)
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366 "A regular expression probably matching a complete URL.")
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367
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368
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369 ;;;###autoload
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370 (defvar browse-url-browser-function 'browse-url-w3
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371 "*Function to display the current buffer in a WWW browser.
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372 Used by the `browse-url-at-point', `browse-url-at-mouse', and
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373 `browse-url-of-file' commands.")
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374
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375 (defvar browse-url-netscape-command "netscape"
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376 "*The name by which to invoke Netscape.")
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377
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378 (defvar browse-url-netscape-arguments nil
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379 "*A list of strings to pass to Netscape as arguments.")
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380
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381 (defvar browse-url-new-window-p nil
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382 "*If non-nil, always open a new browser window.
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383 Passing an interactive argument to \\[browse-url-netscape] or
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384 \\[browse-url-cci] reverses the effect of this variable. Requires
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385 Netscape version 1.1N or later or XMosaic version 2.5 or later.")
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386
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387 (defvar browse-url-mosaic-arguments nil
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388 "*A list of strings to pass to Mosaic as arguments.")
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389
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390 (defvar browse-url-filename-alist
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391 '(("^/+" . "file:/"))
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392 "An alist of (REGEXP . STRING) pairs.
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393 Any substring of a filename matching one of the REGEXPs is replaced by
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394 the corresponding STRING. All pairs are applied in the order given.
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395 The default value prepends `file:' to any path beginning with `/'.
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396 Used by the `browse-url-of-file' command.")
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397
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398 (defvar browse-url-save-file nil
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399 "If non-nil, save the buffer before displaying its file.
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400 Used by the `browse-url-of-file' command.")
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401
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402 (defvar browse-url-of-file-hook nil
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403 "A hook to be run with run-hook after `browse-url-of-file' has asked
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404 a browser to load a file.
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405
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406 Set this to `browse-url-netscape-reload' to force Netscape to load the
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407 file rather than displaying a cached copy.")
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408
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409 (defvar browse-url-usr1-signal
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410 (if (and (boundp 'emacs-major-version)
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411 (or (> emacs-major-version 19) (>= emacs-minor-version 29)))
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412 'SIGUSR1 ; Why did I think this was in lower case before?
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413 30) ; Check /usr/include/signal.h.
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414 "The argument to `signal-process' for sending SIGUSR1 to XMosaic.
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415 Emacs 19.29 accepts 'SIGUSR1, earlier versions require an integer
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416 which is 30 on SunOS and 16 on HP-UX and Solaris.")
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417
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418 (defvar browse-url-CCI-port 3003
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419 "Port to access XMosaic via CCI.
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420 This can be any number between 1024 and 65535 but must correspond to
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421 the value set in the browser.")
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422
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423 (defvar browse-url-CCI-host "localhost"
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424 "*Host to access XMosaic via CCI.
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425 This should be the host name of the machine running XMosaic with CCI
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426 enabled. The port number should be set in `browse-url-CCI-port'.")
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427
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428 (defvar browse-url-temp-file-name nil)
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429 (make-variable-buffer-local 'browse-url-temp-file-name)
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430
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431 (defvar browse-url-temp-file-list '())
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432
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433 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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434 ;; URL input
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435
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436 ;; thingatpt.el doesn't work for complex regexps
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437
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438 (defun browse-url-url-at-point ()
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439 "Return the URL around or before point.
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440 Search backwards for the start of a URL ending at or after
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441 point. If no URL found, return the empty string. The
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442 access scheme, `http://' will be prepended if absent."
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443 (cond ((browse-url-looking-at browse-url-regexp)
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444 (buffer-substring (match-beginning 0) (match-end 0)))
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445 ;; Access scheme omitted?
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446 ((browse-url-looking-at browse-url-short-regexp)
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447 (concat "http://"
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448 (buffer-substring (match-beginning 0) (match-end 0))))
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449 (t ""))) ; No match
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450
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451 (defun browse-url-looking-at (regexp)
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452 "Return non-nil if point is in or just after a match for REGEXP.
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453 Set the match data from the earliest such match in the current line
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454 ending at or after point."
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455 (save-excursion
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456 (let ((old-point (point))
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457 (eol (progn (end-of-line) (point)))
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458 (hit nil))
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459 (beginning-of-line)
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460 (or (and (looking-at regexp)
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461 (>= (match-end 0) old-point))
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462 (progn
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463 (while (and (re-search-forward regexp eol t)
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464 (<= (match-beginning 0) old-point)
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465 (not (setq hit (>= (match-end 0) old-point)))))
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466 hit)))))
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467
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468 ;; Having this as a separate function called by the browser-specific
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469 ;; functions allows them to be stand-alone commands, making it easier
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470 ;; to switch between browsers.
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471
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472 (defun browse-url-interactive-arg (prompt)
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473 "Read a URL from the minibuffer, prompting with PROMPT.
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474 Default to the URL at or before point. If invoke with a mouse button,
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475 set point to the position clicked first. Return a list for use in
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476 `interactive' containing the URL and browse-url-new-window-p or its
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477 negation if a prefix argument was given."
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478 (let ((event (elt (this-command-keys) 0)))
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479 (and (listp event) (mouse-set-point event)))
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480 (list (read-string prompt (browse-url-url-at-point))
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481 (not (eq (null browse-url-new-window-p)
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482 (null current-prefix-arg)))))
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483
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484 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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485 ;; Browse current buffer
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486
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487 (defun browse-url-of-file (&optional file)
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488 "Ask a WWW browser to display FILE.
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489 Display the current buffer's file if FILE is nil or if called
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490 interactively. Turn the filename into a URL with function
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491 browse-url-file-url. Pass the URL to a browser using variable
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492 `browse-url-browser-function' then run `browse-url-of-file-hook'."
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493 (interactive)
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494 (or file
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495 (setq file (buffer-file-name))
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496 (error "Current buffer has no file"))
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497 (let ((buf (get-file-buffer file)))
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498 (if buf
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499 (save-excursion
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500 (set-buffer buf)
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501 (cond ((not (buffer-modified-p)))
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502 (browse-url-save-file (save-buffer))
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503 (t (message "%s modified since last save" file))))))
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504 (funcall browse-url-browser-function (browse-url-file-url file))
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505 (run-hooks 'browse-url-of-file-hook))
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506
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507 (defun browse-url-file-url (file)
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508 "Return the URL corresponding to FILE.
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509 Use variable `browse-url-filename-alist' to map filenames to URLs.
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510 Convert EFS file names of the form /USER@HOST:PATH to ftp://HOST/PATH."
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511 ;; URL-encode special chars, do % first
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512 (let ((s 0))
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513 (while (setq s (string-match "%" file s))
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514 (setq file (replace-match "%25" t t file)
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515 s (1+ s))))
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516 (while (string-match "[*\"()',=;? ]" file)
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517 (setq enc (format "%%%x" (aref file (match-beginning 0)))
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518 file (replace-match enc t t file)))
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519 (let ((maps browse-url-filename-alist))
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520 (while maps
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521 (let* ((map (car maps))
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522 (from-re (car map))
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523 (to-string (cdr map)))
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524 (setq maps (cdr maps))
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525 (and (string-match from-re file)
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526 (setq file (replace-match to-string t t file))))))
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|
527 ;; Check for EFS path
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528 (and (string-match "^/\\([^:@]+@\\)?\\([^:]+\\):/*" file)
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529 (setq file (concat "ftp://"
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|
530 (substring file (match-beginning 2) (match-end 2))
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531 "/" (substring file (match-end 0)))))
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532 file)
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533
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534 (defun browse-url-of-buffer (&optional buffer)
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535 "Ask a WWW browser to display BUFFER.
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536 Display the current buffer if BUFFER is nil."
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537 (interactive)
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538 (save-excursion
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|
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539 (and buffer (set-buffer buffer))
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540 (let ((file-name
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|
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541 (or buffer-file-name
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542 (and (boundp 'dired-directory) dired-directory))))
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|
543 (or file-name
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|
544 (progn
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|
|
545 (or browse-url-temp-file-name
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|
|
546 (setq browse-url-temp-file-name
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|
547 (make-temp-name
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|
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548 (expand-file-name (buffer-name)
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549 (or (getenv "TMPDIR") "/tmp")))
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|
|
550 browse-url-temp-file-list
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551 (cons browse-url-temp-file-name
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552 browse-url-temp-file-list)))
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|
553 (setq file-name browse-url-temp-file-name)
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|
|
554 (write-region (point-min) (point-max) file-name nil 'no-message)))
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|
|
555 (browse-url-of-file file-name))))
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|
|
556
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|
|
557 (defun browse-url-delete-temp-file (&optional temp-file-name)
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|
|
558 ;; Delete browse-url-temp-file-name from the file system and from
|
|
|
559 ;; browse-url-temp-file-list. If optional arg TEMP-FILE-NAME is
|
|
|
560 ;; non-nil, delete it instead, but only from the file system --
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|
|
561 ;; browse-url-temp-file-list is not affected.
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|
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562 (let ((file-name (or temp-file-name browse-url-temp-file-name)))
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|
|
563 (if (and file-name (file-exists-p file-name))
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|
|
564 (progn
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|
|
565 (delete-file file-name)
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|
|
566 (if (null temp-file-name)
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|
|
567 (setq browse-url-temp-file-list
|
|
|
568 (delete browse-url-temp-file-name
|
|
|
569 browse-url-temp-file-list)))))))
|
|
|
570
|
|
|
571 (defun browse-url-delete-temp-file-list ()
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|
|
572 ;; Delete all elements of browse-url-temp-file-list.
|
|
|
573 (while browse-url-temp-file-list
|
|
|
574 (browse-url-delete-temp-file (car browse-url-temp-file-list))
|
|
|
575 (setq browse-url-temp-file-list
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|
|
576 (cdr browse-url-temp-file-list))))
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|
|
577
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|
|
578 (add-hook 'kill-buffer-hook 'browse-url-delete-temp-file)
|
|
|
579 (add-hook 'kill-emacs-hook 'browse-url-delete-temp-file-list)
|
|
|
580
|
|
|
581 (defun browse-url-of-dired-file ()
|
|
|
582 "In Dired, ask a WWW browser to display the file named on this line."
|
|
|
583 (interactive)
|
|
|
584 (browse-url-of-file (dired-get-filename)))
|
|
|
585
|
|
|
586 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
587 ;; Browser-independant commands
|
|
|
588
|
|
|
589 ;; A generic command to call the current b-u-browser-function
|
|
|
590
|
|
|
591 (defun browse-url (&rest args)
|
|
|
592 "Ask a WWW browser to load URL.
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|
|
593 Prompts for a URL, defaulting to the URL at or before point. Variable
|
|
|
594 `browse-url-browser-function' says which browser to use."
|
|
|
595 (interactive (browse-url-interactive-arg "URL: "))
|
|
|
596 (apply browse-url-browser-function args))
|
|
|
597
|
|
|
598 (defun browse-url-at-point ()
|
|
|
599 "Ask a WWW browser to load the URL at or before point.
|
|
|
600 Doesn't let you edit the URL like browse-url. Variable
|
|
|
601 `browse-url-browser-function' says which browser to use."
|
|
|
602 (interactive)
|
|
|
603 (funcall browse-url-browser-function (browse-url-url-at-point)))
|
|
|
604
|
|
|
605 ;; Define these if not already defined (XEmacs compatibility)
|
|
|
606
|
|
|
607 (eval-and-compile
|
|
|
608 (or (fboundp 'event-buffer)
|
|
|
609 (defun event-buffer (event)
|
|
|
610 (window-buffer (posn-window (event-start event))))))
|
|
|
611
|
|
|
612 (eval-and-compile
|
|
|
613 (or (fboundp 'event-point)
|
|
|
614 (defun event-point (event)
|
|
|
615 (posn-point (event-start event)))))
|
|
|
616
|
|
|
617 (defun browse-url-at-mouse (event)
|
|
|
618 "Ask a WWW browser to load a URL clicked with the mouse.
|
|
|
619 The URL is the one around or before the position of the mouse click
|
|
|
620 but point is not changed. Doesn't let you edit the URL like
|
|
|
621 browse-url. Variable `browse-url-browser-function' says which browser
|
|
|
622 to use."
|
|
|
623 (interactive "e")
|
|
|
624 (save-excursion
|
|
|
625 (set-buffer (event-buffer event))
|
|
|
626 (goto-char (event-point event))
|
|
|
627 (let ((url (browse-url-url-at-point)))
|
|
|
628 (if (string-equal url "")
|
|
|
629 (error "No URL found"))
|
|
|
630 (funcall browse-url-browser-function url))))
|
|
|
631
|
|
|
632 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
633 ;; Browser-specific commands
|
|
|
634
|
|
|
635 ;; --- Netscape ---
|
|
|
636
|
|
|
637 ;; Put the correct DISPLAY value in the environment for Netscape
|
|
|
638 ;; launched from multi-display Emacs.
|
|
|
639
|
|
|
640 (defun browse-url-process-environment ()
|
|
|
641 (let* ((device (and (fboundp 'selected-device)
|
|
|
642 (fboundp 'device-connection)
|
|
|
643 (selected-device)))
|
|
|
644 (display (and device (fboundp 'device-type)
|
|
|
645 (eq (device-type device) 'x)
|
|
|
646 (not (equal (device-connection device)
|
|
|
647 (getenv "DISPLAY"))))))
|
|
|
648 (if display
|
|
|
649 ;; Attempt to run on the correct display
|
|
|
650 (cons (concat "DISPLAY=" (device-connection device))
|
|
|
651 process-environment)
|
|
|
652 process-environment)))
|
|
|
653
|
|
|
654
|
|
|
655 ;;;###autoload
|
|
|
656 (defun browse-url-netscape (url &optional new-window)
|
|
|
657 "Ask the Netscape WWW browser to load URL.
|
|
|
658
|
|
|
659 Default to the URL around or before point. The strings in variable
|
|
|
660 `browse-url-netscape-arguments' are also passed to Netscape.
|
|
|
661
|
|
|
662 When called interactively, if variable `browse-url-new-window-p' is
|
|
|
663 non-nil, load the document in a new Netscape window, otherwise use a
|
|
|
664 random existing one. A non-nil interactive prefix argument reverses
|
|
|
665 the effect of browse-url-new-window-p.
|
|
|
666
|
|
|
667 When called non-interactively, optional second argument NEW-WINDOW is
|
|
|
668 used instead of browse-url-new-window-p."
|
|
|
669 (interactive (browse-url-interactive-arg "Netscape URL: "))
|
|
|
670 (let* ((process-environment (browse-url-process-environment))
|
|
|
671 (process (apply 'start-process
|
|
|
672 (concat "netscape " url) nil
|
|
|
673 browse-url-netscape-command
|
|
|
674 (append browse-url-netscape-arguments
|
|
|
675 (if new-window '("-noraise"))
|
|
|
676 (list "-remote"
|
|
|
677 (concat "openURL(" url
|
|
|
678 (if new-window ",new-window")
|
|
|
679 ")"))))))
|
|
|
680 (set-process-sentinel process
|
|
|
681 (list 'lambda '(process change)
|
|
|
682 (list 'browse-url-netscape-sentinel 'process url)))))
|
|
|
683
|
|
|
684 (defun browse-url-netscape-sentinel (process url)
|
|
|
685 "Handle a change to the process communicating with Netscape."
|
|
|
686 (or (eq (process-exit-status process) 0)
|
|
|
687 (let* ((process-environment (browse-url-process-environment)))
|
|
|
688 ;; Netscape not running - start it
|
|
|
689 (message "Starting Netscape...")
|
|
|
690 (apply 'start-process (concat "netscape" url) nil
|
|
|
691 browse-url-netscape-command
|
|
|
692 (append browse-url-netscape-arguments (list url))))))
|
|
|
693
|
|
|
694 (defun browse-url-netscape-reload ()
|
|
|
695 "Ask Netscape to reload its current document."
|
|
|
696 (interactive)
|
|
|
697 (browse-url-netscape-send "reload"))
|
|
|
698
|
|
|
699 (defun browse-url-netscape-send (command)
|
|
|
700 "Send a remote control command to Netscape."
|
|
|
701 (let* ((process-environment (browse-url-process-environment)))
|
|
|
702 (apply 'start-process "netscape" nil
|
|
|
703 browse-url-netscape-command
|
|
|
704 (append browse-url-netscape-arguments
|
|
|
705 (list "-remote" command)))))
|
|
|
706
|
|
|
707 ;; --- Mosaic ---
|
|
|
708
|
|
|
709 ;;;###autoload
|
|
|
710 (defun browse-url-mosaic (url &optional new-window)
|
|
|
711 ;; new-window ignored
|
|
|
712 "Ask the XMosaic WWW browser to load URL.
|
|
|
713 Default to the URL around or before point."
|
|
|
714 (interactive (browse-url-interactive-arg "Mosaic URL: "))
|
|
|
715 (let ((pidfile (expand-file-name "~/.mosaicpid"))
|
|
|
716 pid pidbuf)
|
|
|
717 (if (file-readable-p pidfile)
|
|
|
718 (save-excursion
|
|
|
719 (find-file pidfile)
|
|
|
720 (goto-char (point-min))
|
|
|
721 (setq pid (read (current-buffer)))
|
|
|
722 (kill-buffer nil)))
|
|
|
723 (if (and pid (zerop (signal-process pid 0))) ; Mosaic running
|
|
|
724 (save-excursion
|
|
|
725 (find-file (format "/tmp/Mosaic.%d" pid))
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|
|
726 (erase-buffer)
|
|
|
727 (insert "goto\n" url "\n")
|
|
|
728 (save-buffer)
|
|
|
729 (kill-buffer nil)
|
|
|
730 ;; Send signal SIGUSR to Mosaic
|
|
|
731 (message "Signalling Mosaic...")
|
|
|
732 (signal-process pid browse-url-usr1-signal)
|
|
|
733 ;; Or you could try:
|
|
|
734 ;; (call-process "kill" nil 0 nil "-USR1" (int-to-string pid))
|
|
|
735 (message "Signalling Mosaic...done")
|
|
|
736 )
|
|
|
737 ;; Mosaic not running - start it
|
|
|
738 (message "Starting Mosaic...")
|
|
|
739 (apply 'start-process "xmosaic" nil "xmosaic"
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|
|
740 (append browse-url-mosaic-arguments (list url)))
|
|
|
741 (message "Starting Mosaic...done"))))
|
|
|
742
|
|
|
743 ;; --- Grail ---
|
|
|
744
|
|
|
745 (defvar browse-url-grail
|
|
|
746 (concat (or (getenv "GRAILDIR") "~/.grail") "/user/rcgrail.py")
|
|
|
747 "*Location of Grail remote control client script `rcgrail.py'.
|
|
|
748 Typically found in $GRAILDIR/rcgrail.py, or ~/.grail/user/rcgrail.py.")
|
|
|
749
|
|
|
750 ;;;###autoload
|
|
|
751 (defun browse-url-grail (url)
|
|
|
752 "Ask the Grail WWW browser to load URL.
|
|
|
753 Default to the URL around or before point. Runs the program in the
|
|
|
754 variable `browse-url-grail'."
|
|
|
755 (interactive (browse-url-interactive-arg "Grail URL: "))
|
|
|
756 (message "Sending URL to Grail...")
|
|
|
757 (save-excursion
|
|
|
758 (set-buffer (get-buffer-create " *Shell Command Output*"))
|
|
|
759 (erase-buffer)
|
|
|
760 ;; don't worry about this failing.
|
|
|
761 (call-process browse-url-grail nil 0 nil url)
|
|
|
762 (message "Sending URL to Grail... done")))
|
|
|
763
|
|
|
764 ;; --- Mosaic using CCI ---
|
|
|
765
|
|
|
766 (defun browse-url-cci (url &optional new-window)
|
|
|
767 "Ask the XMosaic WWW browser to load URL.
|
|
|
768 Default to the URL around or before point.
|
|
|
769
|
|
|
770 This function only works for XMosaic version 2.5 or later. You must
|
|
|
771 select `CCI' from XMosaic's File menu, set the CCI Port Address to the
|
|
|
772 value of variable `browse-url-CCI-port', and enable `Accept requests'.
|
|
|
773
|
|
|
774 When called interactively, if variable `browse-url-new-window-p' is
|
|
|
775 non-nil, load the document in a new browser window, otherwise use a
|
|
|
776 random existing one. A non-nil interactive prefix argument reverses
|
|
|
777 the effect of browse-url-new-window-p.
|
|
|
778
|
|
|
779 When called non-interactively, optional second argument NEW-WINDOW is
|
|
|
780 used instead of browse-url-new-window-p."
|
|
|
781 (interactive (browse-url-interactive-arg "Mosaic URL: "))
|
|
|
782 (open-network-stream "browse-url" " *browse-url*"
|
|
|
783 browse-url-CCI-host browse-url-CCI-port)
|
|
|
784 ;; Todo: start browser if fails
|
|
|
785 (process-send-string "browse-url"
|
|
|
786 (concat "get url (" url ") output "
|
|
|
787 (if new-window "new" "current") "\r\n"))
|
|
|
788 (process-send-string "browse-url" "disconnect\r\n")
|
|
|
789 (delete-process "browse-url"))
|
|
|
790
|
|
|
791 ;; --- IXI Mosaic ---
|
|
|
792
|
|
|
793 ;;;###autoload
|
|
|
794 (defun browse-url-iximosaic (url &optional new-window)
|
|
|
795 ;; new-window ignored
|
|
|
796 "Ask the IXIMosaic WWW browser to load URL.
|
|
|
797 Default to the URL around or before point."
|
|
|
798 (interactive (browse-url-interactive-arg "IXI Mosaic URL: "))
|
|
|
799 (start-process "tellw3b" nil "tellw3b"
|
|
|
800 "-service WWW_BROWSER ixi_showurl " url))
|
|
|
801
|
|
|
802 ;; --- W3 ---
|
|
|
803
|
|
|
804 ;;;###autoload
|
|
|
805 (defun browse-url-w3 (url &optional new-window)
|
|
|
806 ;; new-window ignored
|
|
|
807 "Ask the w3 WWW browser to load URL.
|
|
|
808 Default to the URL around or before point."
|
|
|
809 (interactive (browse-url-interactive-arg "W3 URL: "))
|
|
|
810 (w3-fetch url))
|
|
|
811
|
|
|
812 ;; --- Lynx in an xterm ---
|
|
|
813
|
|
|
814 ;;;###autoload
|
|
|
815 (defun browse-url-lynx-xterm (url &optional new-window)
|
|
|
816 ;; new-window ignored
|
|
|
817 "Ask the Lynx WWW browser to load URL.
|
|
|
818 Default to the URL around or before point. A new Lynx process is run
|
|
|
819 in an Xterm window."
|
|
|
820 (interactive (browse-url-interactive-arg "Lynx URL: "))
|
|
|
821 (start-process (concat "lynx" url) nil "xterm" "-e" "lynx" url))
|
|
|
822
|
|
|
823 (eval-when-compile (require 'term))
|
|
|
824
|
|
|
825 ;; --- Lynx in an Emacs "term" window ---
|
|
|
826
|
|
|
827 ;;;###autoload
|
|
|
828 (defun browse-url-lynx-emacs (url &optional new-window)
|
|
|
829 ;; new-window ignored
|
|
|
830 "Ask the Lynx WWW browser to load URL.
|
|
|
831 Default to the URL around or before point. Run a new Lynx process in
|
|
|
832 an Emacs buffer."
|
|
|
833 (interactive (browse-url-interactive-arg "Lynx URL: "))
|
|
|
834 (let ((system-uses-terminfo t)) ; Lynx uses terminfo
|
|
|
835 (if (fboundp 'make-term)
|
|
|
836 (let ((term-term-name "vt100"))
|
|
|
837 (set-buffer (make-term "browse-url" "lynx" nil url))
|
|
|
838 (term-mode)
|
|
|
839 (term-char-mode)
|
|
|
840 (switch-to-buffer "*browse-url*"))
|
|
|
841 (terminal-emulator "*browse-url*" "lynx" (list url)))))
|
|
|
842
|
|
|
843 (provide 'browse-url)
|
|
|
844
|
|
|
845 ;;; browse-url.el ends here
|
