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1 ;;; hyper-apropos.el --- Hypertext emacs lisp documentation interface.
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2
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502
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3 ;; Copyright (C) 1997 Free Software Foundation, Inc.
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428
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4 ;; Copyright (C) 1994, 1995 Tinker Systems and INS Engineering Corp.
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5 ;; Copyright (C) 1995 Sun Microsystems.
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6 ;; Copyright (C) 1996 Ben Wing.
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7
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502
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8 ;; Author: Jonathan Stigelman <stig@xemacs.org>
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9 ;; Maintainer: XEmacs Development Team
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428
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10 ;; Keywords: lisp, tools, help, docs, matching
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11
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12 ;; This file is part of XEmacs.
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13
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14 ;; XEmacs is free software; you can redistribute it and/or modify
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15 ;; it under the terms of the GNU General Public License as published by
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16 ;; the Free Software Foundation; either version 2 of the License, or
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17 ;; (at your option) any later version.
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18 ;;
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19 ;; XEmacs is distributed in the hope that it will be useful,
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20 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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22 ;; GNU 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; if not, write to the Free Software
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26 ;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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27
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28 ;;; Synched up with: Not in FSF.
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29
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30 ;;; Commentary:
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31
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32 ;; based upon emacs-apropos.el by Frank C. Guida <fcg@philabs.philips.com>
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33 ;;
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34 ;; Rather than run apropos and print all the documentation at once,
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35 ;; I find it easier to view a "table of contents" first, then
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36 ;; get the details for symbols as you need them.
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37 ;;
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38 ;; This version of apropos prints two lists of symbols matching the
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39 ;; given regexp: functions/macros and variables/constants.
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40 ;;
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41 ;; The user can then do the following:
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42 ;;
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43 ;; - add an additional regexp to narrow the search
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44 ;; - display documentation for the current symbol
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45 ;; - find the tag for the current symbol
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46 ;; - show any keybindings if the current symbol is a command
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47 ;; - invoke functions
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48 ;; - set variables
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49 ;;
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50 ;; An additional feature is the ability to search the current tags
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51 ;; table, allowing you to interrogate functions not yet loaded (this
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52 ;; isn't available with the standard package).
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53 ;;
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54 ;; Mouse bindings and menus are provided for XEmacs.
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55 ;;
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56 ;; additions by Ben Wing <ben@xemacs.org> July 1995:
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57 ;; added support for function aliases, made programmer's apropos be the
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58 ;; default, various other hacking.
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59 ;; Massive changes by Christoph Wedler <wedler@fmi.uni-passau.de>
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60 ;; Some changes for XEmacs 20.3 by hniksic
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61
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62 ;; #### The maintainer is supposed to be stig, but I haven't seen him
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63 ;; around for ages. The real maintainer for the moment is Hrvoje
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64 ;; Niksic <hniksic@xemacs.org>.
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65
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66 ;;; Code:
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67
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68 (defgroup hyper-apropos nil
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69 "Hypertext emacs lisp documentation interface."
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70 :group 'docs
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71 :group 'lisp
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72 :group 'tools
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73 :group 'help
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74 :group 'matching)
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75
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76 (defcustom hyper-apropos-show-brief-docs t
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77 "*If non-nil, display some documentation in the \"*Hyper Apropos*\" buffer.
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78 Setting this to nil will speed up searches."
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79 :type 'boolean
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80 :group 'hyper-apropos)
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81 (define-obsolete-variable-alias
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82 'hypropos-show-brief-docs 'hyper-apropos-show-brief-docs)
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83
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84 ;; I changed the following to true because it's obviously more useful
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85 ;; that way, and is a very good example of following the principle of
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86 ;; least surprise. --ben
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87
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88 (defcustom hyper-apropos-programming-apropos t
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89 "*If non-nil, list all the functions and variables.
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90 This will cause more output to be generated, and take a longer time.
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91 Otherwise, only the interactive functions and user variables will be listed.
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92
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93 If you're thinking of setting it to nil, consider that you can get the
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94 equivalent just by using the command \\[command-hyper-apropos]. (And if you do set it to nil,
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95 you can get the full output by using \\[universal-argument] \\[hyper-apropos].)"
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96 :type 'boolean
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97 :group 'hyper-apropos)
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98 (define-obsolete-variable-alias
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99 'hypropos-programming-apropos 'hyper-apropos-programming-apropos)
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100
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101 (defcustom hyper-apropos-shrink-window nil
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102 "*If non-nil, shrink *Hyper Help* buffer if possible."
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103 :type 'boolean
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104 :group 'hyper-apropos)
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105 (define-obsolete-variable-alias
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106 'hypropos-shrink-window 'hyper-apropos-shrink-window)
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107
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108 (defcustom hyper-apropos-prettyprint-long-values t
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109 "*If non-nil, then try to beautify the printing of very long values."
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110 :type 'boolean
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111 :group 'hyper-apropos)
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112 (define-obsolete-variable-alias
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113 'hypropos-prettyprint-long-values 'hyper-apropos-prettyprint-long-values)
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114
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115 (defgroup hyper-apropos-faces nil
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116 "Faces defined by hyper-apropos."
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117 :prefix "hyper-apropos-"
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118 :group 'faces)
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119
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120 (defface hyper-apropos-documentation
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121 '((((class color) (background light))
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122 (:foreground "darkred"))
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123 (((class color) (background dark))
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124 (:foreground "gray90")))
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125 "Hyper-apropos documentation."
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126 :group 'hyper-apropos-faces)
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127
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128 (defface hyper-apropos-hyperlink
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129 '((((class color) (background light))
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130 (:foreground "blue4"))
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131 (((class color) (background dark))
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132 (:foreground "lightseagreen"))
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133 (t
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134 (:bold t)))
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135 "Hyper-apropos hyperlinks."
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136 :group 'hyper-apropos-faces)
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137
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138 (defface hyper-apropos-major-heading '((t (:bold t)))
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139 "Hyper-apropos major heading."
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140 :group 'hyper-apropos-faces)
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141
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142 (defface hyper-apropos-section-heading '((t (:bold t :italic t)))
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143 "Hyper-apropos section heading."
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144 :group 'hyper-apropos-faces)
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145
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146 (defface hyper-apropos-heading '((t (:bold t)))
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147 "Hyper-apropos heading."
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148 :group 'hyper-apropos-faces)
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149
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150 (defface hyper-apropos-warning '((t (:bold t :foreground "red")))
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151 "Hyper-apropos warning."
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152 :group 'hyper-apropos-faces)
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153
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154 ;;; Internal variables below this point
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155
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156 (defvar hyper-apropos-ref-buffer)
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157 (defvar hyper-apropos-prev-wconfig)
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158
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159 (defvar hyper-apropos-help-map
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160 (let ((map (make-sparse-keymap)))
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161 (suppress-keymap map)
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162 (set-keymap-name map 'hyper-apropos-help-map)
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163 ;; movement
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164 (define-key map " " 'scroll-up)
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165 (define-key map "b" 'scroll-down)
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166 (define-key map [delete] 'scroll-down)
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167 (define-key map [backspace] 'scroll-down)
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168 (define-key map "/" 'isearch-forward)
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169 (define-key map "?" 'isearch-backward)
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170 ;; follow links
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171 (define-key map [return] 'hyper-apropos-get-doc)
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172 (define-key map "s" 'hyper-apropos-set-variable)
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173 (define-key map "t" 'hyper-apropos-find-tag)
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174 (define-key map "l" 'hyper-apropos-last-help)
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175 (define-key map "c" 'hyper-apropos-customize-variable)
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176 (define-key map "f" 'hyper-apropos-find-function)
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177 (define-key map [button2] 'hyper-apropos-mouse-get-doc)
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178 (define-key map [button3] 'hyper-apropos-popup-menu)
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179 ;; for the totally hardcore...
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180 (define-key map "D" 'hyper-apropos-disassemble)
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181 ;; administrativa
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182 (define-key map "a" 'hyper-apropos)
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183 (define-key map "n" 'hyper-apropos)
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184 (define-key map "q" 'hyper-apropos-quit)
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185 map)
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186 "Keybindings for the *Hyper Help* buffer and the *Hyper Apropos* buffer")
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187 (define-obsolete-variable-alias
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188 'hypropos-help-map 'hyper-apropos-help-map)
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189
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190 (defvar hyper-apropos-map
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191 (let ((map (make-sparse-keymap)))
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192 (set-keymap-name map 'hyper-apropos-map)
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193 (set-keymap-parents map (list hyper-apropos-help-map))
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194 ;; slightly different scrolling...
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195 (define-key map " " 'hyper-apropos-scroll-up)
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196 (define-key map "b" 'hyper-apropos-scroll-down)
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197 (define-key map [delete] 'hyper-apropos-scroll-down)
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198 (define-key map [backspace] 'hyper-apropos-scroll-down)
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199 ;; act on the current line...
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200 (define-key map "w" 'hyper-apropos-where-is)
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201 (define-key map "i" 'hyper-apropos-invoke-fn)
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202 ;; this is already defined in the parent-keymap above, isn't it?
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203 ;; (define-key map "s" 'hyper-apropos-set-variable)
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204 ;; more administrativa...
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205 (define-key map "P" 'hyper-apropos-toggle-programming-flag)
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206 (define-key map "k" 'hyper-apropos-add-keyword)
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207 (define-key map "e" 'hyper-apropos-eliminate-keyword)
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208 map)
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209 "Keybindings for the *Hyper Apropos* buffer.
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210 This map inherits from `hyper-apropos-help-map.'")
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211 (define-obsolete-variable-alias
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212 'hypropos-map 'hyper-apropos-map)
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213
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214 ;;(defvar hyper-apropos-mousable-keymap
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215 ;; (let ((map (make-sparse-keymap)))
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216 ;; (define-key map [button2] 'hyper-apropos-mouse-get-doc)
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217 ;; map))
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218
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219 (defvar hyper-apropos-mode-hook nil
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220 "*User function run after hyper-apropos mode initialization. Usage:
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221 \(add-hook 'hyper-apropos-mode-hook #'(lambda () ... your init forms ...)).")
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222
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223 ;; ---------------------------------------------------------------------- ;;
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224
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225 (defconst hyper-apropos-junk-regexp
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226 "^Apropos\\|^Functions\\|^Variables\\|^$")
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227
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228 (defvar hyper-apropos-currently-showing nil) ; symbol documented in
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229 ; help buffer now
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230 (defvar hyper-apropos-help-history nil) ; chain of symbols followed as links in
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231 ; help buffer
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232 (defvar hyper-apropos-face-history nil)
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233 ;;;(defvar hyper-apropos-variable-history nil)
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234 ;;;(defvar hyper-apropos-function-history nil)
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235 (defvar hyper-apropos-regexp-history nil)
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236 (defvar hyper-apropos-last-regexp nil) ; regex used for last apropos
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237 (defconst hyper-apropos-apropos-buf "*Hyper Apropos*")
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238 (defconst hyper-apropos-help-buf "*Hyper Help*")
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239
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240 ;;;###autoload
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502
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241 (defun command-hyper-apropos (regexp)
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242 "Display lists of commands and user options matching REGEXP
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243 in buffer \"*Hyper Apropos*\". See `hyper-apropos-mode' for a
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244 description of the available commands in a Hyper-Apropos buffer."
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245 (interactive (list (read-from-minibuffer
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246 "List symbols matching regexp: "
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247 nil nil nil 'hyper-apropos-regexp-history)))
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248 (let ((hyper-apropos-programming-apropos nil))
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249 (hyper-apropos regexp nil)))
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250
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251 ;;;###autoload
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428
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252 (defun hyper-apropos (regexp toggle-apropos)
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253 "Display lists of functions and variables matching REGEXP
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254 in buffer \"*Hyper Apropos*\". If optional prefix arg is given, then the
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255 value of `hyper-apropos-programming-apropos' is toggled for this search.
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256 See `hyper-apropos-mode' for a description of the available commands in
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257 a Hyper-Apropos buffer."
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258 (interactive (list (read-from-minibuffer
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259 "List symbols matching regexp: "
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260 nil nil nil 'hyper-apropos-regexp-history)
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428
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261 current-prefix-arg))
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262 (or (memq major-mode '(hyper-apropos-mode hyper-apropos-help-mode))
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263 (setq hyper-apropos-prev-wconfig (current-window-configuration)))
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264 (if (string= "" regexp)
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265 (if (get-buffer hyper-apropos-apropos-buf)
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266 (progn
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267 (setq regexp hyper-apropos-last-regexp)
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268 (if toggle-apropos
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269 (hyper-apropos-toggle-programming-flag)
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270 (message "Using last search results")))
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271 (error "Be more specific..."))
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272 (set-buffer (get-buffer-create hyper-apropos-apropos-buf))
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273 (setq buffer-read-only nil)
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274 (erase-buffer)
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275 (if toggle-apropos
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434
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276 (if (local-variable-p 'hyper-apropos-programming-apropos
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277 (current-buffer))
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278 (setq hyper-apropos-programming-apropos
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279 (not hyper-apropos-programming-apropos))
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280 (set (make-local-variable 'hyper-apropos-programming-apropos)
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281 (not (default-value 'hyper-apropos-programming-apropos)))))
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428
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282 (let ((flist (apropos-internal regexp
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283 (if hyper-apropos-programming-apropos
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284 #'fboundp
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285 #'commandp)))
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286 (vlist (apropos-internal regexp
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287 (if hyper-apropos-programming-apropos
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288 #'boundp
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289 #'user-variable-p))))
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290 (insert-face (format "Apropos search for: %S\n\n" regexp)
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291 'hyper-apropos-major-heading)
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292 (insert-face "* = command (M-x) or user-variable.\n"
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293 'hyper-apropos-documentation)
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294 (insert-face "\
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295 a = autoloaded, b = byte-compiled, i = internal, l = lambda, m = macro.\n\n"
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296 'hyper-apropos-documentation)
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297 (insert-face "Functions and Macros:\n\n" 'hyper-apropos-major-heading)
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298 (hyper-apropos-grok-functions flist)
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299 (insert-face "\n\nVariables and Constants:\n\n"
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300 'hyper-apropos-major-heading)
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301 (hyper-apropos-grok-variables vlist)
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302 (goto-char (point-min))))
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303 (switch-to-buffer hyper-apropos-apropos-buf)
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304 (hyper-apropos-mode regexp))
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305
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306 (defun hyper-apropos-toggle-programming-flag ()
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307 (interactive)
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308 (with-current-buffer hyper-apropos-apropos-buf
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309 (set (make-local-variable 'hyper-apropos-programming-apropos)
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310 (not hyper-apropos-programming-apropos)))
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311 (message "Re-running apropos...")
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312 (hyper-apropos hyper-apropos-last-regexp nil))
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313
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314 (defun hyper-apropos-grok-functions (fns)
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315 (let (bind doc type)
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316 (dolist (fn fns)
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317 (setq bind (symbol-function fn)
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318 type (cond ((subrp bind) ?i)
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319 ((compiled-function-p bind) ?b)
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320 ((consp bind) (or (cdr
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321 (assq (car bind) '((autoload . ?a)
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322 (lambda . ?l)
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323 (macro . ?m))))
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324 ??))
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325 (t ?\ )))
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326 (insert type (if (commandp fn) "* " " "))
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327 (let ((e (insert-face (format "%S" fn) 'hyper-apropos-hyperlink)))
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328 (set-extent-property e 'mouse-face 'highlight))
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329 (insert-char ?\ (let ((l (- 30 (length (format "%S" fn)))))
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330 (if (natnump l) l 0)))
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331 (and hyper-apropos-show-brief-docs
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332 (setq doc
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333 ;; A symbol's function slot can point to an unbound symbol.
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334 ;; In that case, `documentation' will fail.
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335 (ignore-errors
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336 (documentation fn)))
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337 (if (string-match
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338 "^([^\n\t )]+[\t ]*\\([^\n)]+\\)?)\\(:[\t ]*\\|\n?\\'\\)"
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339 doc)
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340 (setq doc (substring doc (match-end 0) (string-match "\n" doc)))
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341 t)
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342 (insert-face (if doc
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343 (concat " - "
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344 (substring doc 0 (string-match "\n" doc)))
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345 " Not documented.")
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346 'hyper-apropos-documentation))
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347 (insert ?\n))))
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348
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349 (defun hyper-apropos-grok-variables (vars)
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350 (let (doc userp)
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351 (dolist (var vars)
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352 (setq userp (user-variable-p var))
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353 (insert (if userp " * " " "))
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354 (let ((e (insert-face (format "%S" var) 'hyper-apropos-hyperlink)))
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355 (set-extent-property e 'mouse-face 'highlight))
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356 (insert-char ?\ (let ((l (- 30 (length (format "%S" var)))))
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357 (if (natnump l) l 0)))
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358 (and hyper-apropos-show-brief-docs
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359 (setq doc (documentation-property var 'variable-documentation))
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360 (insert-face (if doc
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361 (concat " - " (substring doc (if userp 1 0)
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362 (string-match "\n" doc)))
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363 " - Not documented.")
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364 'hyper-apropos-documentation))
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365 (insert ?\n))))
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366
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367 ;; ---------------------------------------------------------------------- ;;
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368
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369 (defun hyper-apropos-mode (regexp)
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370 "Improved apropos mode for displaying Emacs documentation. Function and
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371 variable names are displayed in the buffer \"*Hyper Apropos*\".
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372
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373 Functions are preceded by a single character to indicates their types:
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374 a = autoloaded, b = byte-compiled, i = internal, l = lambda, m = macro.
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375 Interactive functions are also preceded by an asterisk.
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376 Variables are preceded by an asterisk if they are user variables.
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377
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378 General Commands:
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379
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380 SPC - scroll documentation or apropos window forward
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381 b - scroll documentation or apropos window backward
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382 k - eliminate all hits that don't contain keyword
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383 n - new search
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384 / - isearch-forward
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385 q - quit and restore previous window configuration
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386
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387 Operations for Symbol on Current Line:
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388
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389 RET - toggle display of symbol's documentation
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390 (also on button2 in xemacs)
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391 w - show the keybinding if symbol is a command
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392 i - invoke function on current line
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393 s - set value of variable on current line
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394 t - display the C or lisp source (find-tag)"
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395 (delete-other-windows)
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396 (setq mode-name "Hyper-Apropos"
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397 major-mode 'hyper-apropos-mode
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398 buffer-read-only t
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399 truncate-lines t
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400 hyper-apropos-last-regexp regexp
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401 modeline-buffer-identification
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402 (list (cons modeline-buffer-id-left-extent "Hyper Apropos: ")
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403 (cons modeline-buffer-id-right-extent (concat "\"" regexp "\""))))
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404 (use-local-map hyper-apropos-map)
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405 (run-hooks 'hyper-apropos-mode-hook))
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406
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407 ;; ---------------------------------------------------------------------- ;;
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408
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409 ;; similar to `describe-key-briefly', copied from help.el by CW
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410
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411 ;;;###autoload
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412 (defun hyper-describe-key (key)
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413 (interactive "kDescribe key: ")
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414 (hyper-describe-key-briefly key t))
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415
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416 ;;;###autoload
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417 (defun hyper-describe-key-briefly (key &optional show)
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418 (interactive "kDescribe key briefly: \nP")
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419 (let (menup defn interm final msg)
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420 (setq defn (key-or-menu-binding key 'menup))
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421 (if (or (null defn) (integerp defn))
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422 (or (numberp show) (message "%s is undefined" (key-description key)))
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423 (cond ((stringp defn)
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424 (setq interm defn
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425 final (key-binding defn)))
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426 ((vectorp defn)
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427 (setq interm (append defn nil))
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428 (while (and interm
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429 (member (key-binding (vector (car interm)))
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430 '(universal-argument digit-argument)))
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431 (setq interm (cdr interm)))
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432 (while (and interm
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433 (not (setq final (key-binding (vconcat interm)))))
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434 (setq interm (butlast interm)))
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435 (if final
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436 (setq interm (vconcat interm))
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437 (setq interm defn
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438 final (key-binding defn)))))
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|
439 (setq msg (format
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440 "%s runs %s%s%s"
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441 ;; This used to say 'This menu item' but it could also
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442 ;; be a scrollbar event. We can't distinguish at the
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443 ;; moment.
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444 (if menup "This item" (key-description key))
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445 ;;(if (symbolp defn) defn (key-description defn))
|
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446 (if (symbolp defn) defn (prin1-to-string defn))
|
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447 (if final (concat ", " (key-description interm) " runs ") "")
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448 (if final
|
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449 (if (symbolp final) final (prin1-to-string final))
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450 "")))
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451 (if (numberp show)
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452 (or (not (symbolp defn))
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|
453 (memq (symbol-function defn)
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454 '(zkey-init-kbd-macro zkey-init-kbd-fn))
|
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455 (progn (princ msg) (princ "\n")))
|
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456 (message "%s" msg)
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|
457 (if final (setq defn final))
|
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|
458 (if (and (or (symbolp defn) (symbolp (setq defn (car-safe defn))))
|
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|
459 defn
|
|
|
460 show)
|
|
438
|
461 (hyper-apropos-get-doc defn t))
|
|
|
462 (or (memq major-mode '(hyper-apropos-mode hyper-apropos-help-mode))
|
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|
463 (setq hyper-apropos-prev-wconfig (current-window-configuration)))))))
|
|
428
|
464
|
|
|
465 ;;;###autoload
|
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|
466 (defun hyper-describe-face (symbol &optional this-ref-buffer)
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|
467 "Describe face..
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|
468 See also `hyper-apropos' and `hyper-describe-function'."
|
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|
469 ;; #### - perhaps a prefix arg should suppress the prompt...
|
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|
470 (interactive
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|
471 (let (v val)
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|
472 (setq v (hyper-apropos-this-symbol)) ; symbol under point
|
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|
473 (or (find-face v)
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|
474 (setq v (variable-at-point)))
|
|
|
475 (setq val (let ((enable-recursive-minibuffers t))
|
|
|
476 (completing-read
|
|
|
477 (concat (if (hyper-apropos-follow-ref-buffer current-prefix-arg)
|
|
|
478 "Follow face"
|
|
|
479 "Describe face")
|
|
|
480 (if v
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|
|
481 (format " (default %s): " v)
|
|
|
482 ": "))
|
|
|
483 (mapcar #'(lambda (x) (list (symbol-name x)))
|
|
|
484 (face-list))
|
|
438
|
485 nil t nil 'hyper-apropos-face-history
|
|
|
486 (and v (symbol-name v)))))
|
|
|
487 (list (intern-soft val)
|
|
428
|
488 current-prefix-arg)))
|
|
|
489 (if (null symbol)
|
|
|
490 (message "Sorry, nothing to describe.")
|
|
|
491 (or (memq major-mode '(hyper-apropos-mode hyper-apropos-help-mode))
|
|
|
492 (setq hyper-apropos-prev-wconfig (current-window-configuration)))
|
|
|
493 (hyper-apropos-get-doc symbol t nil this-ref-buffer)))
|
|
|
494
|
|
|
495 ;;;###autoload
|
|
|
496 (defun hyper-describe-variable (symbol &optional this-ref-buffer)
|
|
|
497 "Hypertext drop-in replacement for `describe-variable'.
|
|
|
498 See also `hyper-apropos' and `hyper-describe-function'."
|
|
|
499 ;; #### - perhaps a prefix arg should suppress the prompt...
|
|
|
500 (interactive (list (hyper-apropos-read-variable-symbol
|
|
|
501 (if (hyper-apropos-follow-ref-buffer current-prefix-arg)
|
|
|
502 "Follow variable"
|
|
|
503 "Describe variable"))
|
|
|
504 current-prefix-arg))
|
|
|
505 (if (null symbol)
|
|
|
506 (message "Sorry, nothing to describe.")
|
|
|
507 (or (memq major-mode '(hyper-apropos-mode hyper-apropos-help-mode))
|
|
|
508 (setq hyper-apropos-prev-wconfig (current-window-configuration)))
|
|
|
509 (hyper-apropos-get-doc symbol t nil this-ref-buffer)))
|
|
|
510
|
|
|
511 ;;;###autoload
|
|
|
512 (defun hyper-where-is (symbol)
|
|
|
513 "Print message listing key sequences that invoke specified command."
|
|
|
514 (interactive (list (hyper-apropos-read-function-symbol "Where is function")))
|
|
|
515 (if (null symbol)
|
|
|
516 (message "Sorry, nothing to describe.")
|
|
|
517 (where-is symbol)))
|
|
|
518
|
|
|
519 ;;;###autoload
|
|
|
520 (defun hyper-describe-function (symbol &optional this-ref-buffer)
|
|
|
521 "Hypertext replacement for `describe-function'. Unlike `describe-function'
|
|
|
522 in that the symbol under the cursor is the default if it is a function.
|
|
|
523 See also `hyper-apropos' and `hyper-describe-variable'."
|
|
|
524 ;; #### - perhaps a prefix arg should suppress the prompt...
|
|
|
525 (interactive (list (hyper-apropos-read-function-symbol
|
|
|
526 (if (hyper-apropos-follow-ref-buffer current-prefix-arg)
|
|
|
527 "Follow function"
|
|
|
528 "Describe function"))
|
|
|
529 current-prefix-arg))
|
|
|
530 (if (null symbol)
|
|
|
531 (message "Sorry, nothing to describe.")
|
|
|
532 (or (memq major-mode '(hyper-apropos-mode hyper-apropos-help-mode))
|
|
|
533 (setq hyper-apropos-prev-wconfig (current-window-configuration)))
|
|
|
534 (hyper-apropos-get-doc symbol t nil this-ref-buffer)))
|
|
|
535
|
|
|
536 ;;;###autoload
|
|
|
537 (defun hyper-apropos-read-variable-symbol (prompt &optional predicate)
|
|
|
538 "Hypertext drop-in replacement for `describe-variable'.
|
|
|
539 See also `hyper-apropos' and `hyper-describe-function'."
|
|
|
540 ;; #### - perhaps a prefix arg should suppress the prompt...
|
|
|
541 (or predicate (setq predicate 'boundp))
|
|
|
542 (let (v val)
|
|
|
543 (setq v (hyper-apropos-this-symbol)) ; symbol under point
|
|
|
544 (or (funcall predicate v)
|
|
|
545 (setq v (variable-at-point)))
|
|
|
546 (or (funcall predicate v)
|
|
|
547 (setq v nil))
|
|
|
548 (setq val (let ((enable-recursive-minibuffers t))
|
|
|
549 (completing-read
|
|
|
550 (concat prompt
|
|
|
551 (if v
|
|
|
552 (format " (default %s): " v)
|
|
|
553 ": "))
|
|
438
|
554 obarray predicate t nil 'variable-history
|
|
|
555 (and v (symbol-name v)))))
|
|
|
556 (intern-soft val)))
|
|
|
557
|
|
428
|
558 ;;;###autoload
|
|
|
559 (define-obsolete-function-alias
|
|
|
560 'hypropos-read-variable-symbol 'hyper-apropos-read-variable-symbol)
|
|
|
561
|
|
|
562 (defun hyper-apropos-read-function-symbol (prompt)
|
|
|
563 "Read function symbol from minibuffer."
|
|
|
564 (let ((fn (hyper-apropos-this-symbol))
|
|
|
565 val)
|
|
|
566 (or (fboundp fn)
|
|
|
567 (setq fn (function-at-point)))
|
|
|
568 (setq val (let ((enable-recursive-minibuffers t))
|
|
|
569 (completing-read (if fn
|
|
|
570 (format "%s (default %s): " prompt fn)
|
|
|
571 (format "%s: " prompt))
|
|
|
572 obarray 'fboundp t nil
|
|
438
|
573 'function-history
|
|
|
574 (and fn (symbol-name fn)))))
|
|
|
575 (intern-soft val)))
|
|
428
|
576
|
|
|
577 (defun hyper-apropos-last-help (arg)
|
|
|
578 "Go back to the last symbol documented in the *Hyper Help* buffer."
|
|
|
579 (interactive "P")
|
|
|
580 (let ((win (get-buffer-window hyper-apropos-help-buf)))
|
|
|
581 (or arg (setq arg (if win 1 0)))
|
|
|
582 (cond ((= arg 0))
|
|
|
583 ((<= (length hyper-apropos-help-history) arg)
|
|
|
584 ;; go back as far as we can...
|
|
|
585 (setcdr (nreverse hyper-apropos-help-history) nil))
|
|
|
586 (t
|
|
|
587 (setq hyper-apropos-help-history
|
|
|
588 (nthcdr arg hyper-apropos-help-history))))
|
|
|
589 (if (or win (> arg 0))
|
|
|
590 (hyper-apropos-get-doc (car hyper-apropos-help-history) t)
|
|
|
591 (display-buffer hyper-apropos-help-buf))))
|
|
|
592
|
|
|
593 (defun hyper-apropos-insert-face (string &optional face)
|
|
|
594 "Insert STRING and fontify some parts with face `hyper-apropos-hyperlink'."
|
|
|
595 (let ((beg (point)) end)
|
|
|
596 (insert-face string (or face 'hyper-apropos-documentation))
|
|
|
597 (setq end (point))
|
|
|
598 (goto-char beg)
|
|
|
599 (while (re-search-forward
|
|
|
600 "`\\([-a-zA-Z0-9_][-a-zA-Z0-9_][-a-zA-Z0-9_.]+\\)'"
|
|
|
601 end 'limit)
|
|
|
602 (let ((e (make-extent (match-beginning 1) (match-end 1))))
|
|
|
603 (set-extent-face e 'hyper-apropos-hyperlink)
|
|
|
604 (set-extent-property e 'mouse-face 'highlight)))
|
|
|
605 (goto-char beg)
|
|
|
606 (while (re-search-forward
|
|
|
607 "M-x \\([-a-zA-Z0-9_][-a-zA-Z0-9_][-a-zA-Z0-9_.]+\\)"
|
|
|
608 end 'limit)
|
|
|
609 (let ((e (make-extent (match-beginning 1) (match-end 1))))
|
|
|
610 (set-extent-face e 'hyper-apropos-hyperlink)
|
|
|
611 (set-extent-property e 'mouse-face 'highlight)))))
|
|
|
612
|
|
|
613 (defun hyper-apropos-insert-keybinding (keys string)
|
|
|
614 (if keys
|
|
|
615 (insert " (" string " bound to \""
|
|
|
616 (mapconcat 'key-description
|
|
|
617 (sort* keys #'< :key #'length)
|
|
|
618 "\", \"")
|
|
|
619 "\")\n")))
|
|
|
620
|
|
|
621 (defun hyper-apropos-insert-section-heading (alias-desc &optional desc)
|
|
|
622 (or desc (setq desc alias-desc
|
|
|
623 alias-desc nil))
|
|
|
624 (if alias-desc
|
|
|
625 (setq desc (concat alias-desc
|
|
|
626 (if (memq (aref desc 0)
|
|
|
627 '(?a ?e ?i ?o ?u))
|
|
|
628 ", an " ", a ")
|
|
|
629 desc)))
|
|
|
630 (aset desc 0 (upcase (aref desc 0))) ; capitalize
|
|
|
631 (goto-char (point-max))
|
|
|
632 (newline 3) (delete-blank-lines) (newline 2)
|
|
|
633 (hyper-apropos-insert-face desc 'hyper-apropos-section-heading))
|
|
|
634
|
|
|
635 (defun hyper-apropos-insert-value (string symbol val)
|
|
|
636 (insert-face string 'hyper-apropos-heading)
|
|
|
637 (insert (if (symbol-value symbol)
|
|
|
638 (if (or (null val) (eq val t) (integerp val))
|
|
|
639 (prog1
|
|
|
640 (symbol-value symbol)
|
|
|
641 (set symbol nil))
|
|
|
642 "see below")
|
|
|
643 "is void")))
|
|
|
644
|
|
|
645 (defun hyper-apropos-follow-ref-buffer (this-ref-buffer)
|
|
|
646 (and (not this-ref-buffer)
|
|
|
647 (eq major-mode 'hyper-apropos-help-mode)
|
|
|
648 hyper-apropos-ref-buffer
|
|
|
649 (buffer-live-p hyper-apropos-ref-buffer)))
|
|
|
650
|
|
|
651 (defun hyper-apropos-get-alias (symbol alias-p next-symbol &optional use)
|
|
|
652 "Return (TERMINAL-SYMBOL . ALIAS-DESC)."
|
|
|
653 (let (aliases)
|
|
|
654 (while (funcall alias-p symbol)
|
|
|
655 (setq aliases (cons (if use (funcall use symbol) symbol) aliases))
|
|
|
656 (setq symbol (funcall next-symbol symbol)))
|
|
|
657 (cons symbol
|
|
|
658 (and aliases
|
|
|
659 (concat "an alias for `"
|
|
|
660 (mapconcat 'symbol-name
|
|
|
661 (nreverse aliases)
|
|
|
662 "',\nwhich is an alias for `")
|
|
|
663 "'")))))
|
|
|
664
|
|
|
665 (defun hyper-apropos-get-doc (&optional symbol force type this-ref-buffer)
|
|
|
666 ;; #### - update this docstring
|
|
|
667 "Toggle display of documentation for the symbol on the current line."
|
|
|
668 ;; SYMBOL is the symbol to document. FORCE, if non-nil, means to
|
|
|
669 ;; regenerate the documentation even if it already seems to be there. And
|
|
|
670 ;; TYPE, if present, forces the generation of only variable documentation
|
|
|
671 ;; or only function documentation. Normally, if both are present, then
|
|
|
672 ;; both will be generated.
|
|
|
673 ;;
|
|
|
674 ;; TYPES TO IMPLEMENT: obsolete face
|
|
|
675 ;;
|
|
|
676 (interactive)
|
|
|
677 (or symbol
|
|
|
678 (setq symbol (hyper-apropos-this-symbol)))
|
|
|
679 (or type
|
|
|
680 (setq type '(function variable face)))
|
|
|
681 (if (and (eq hyper-apropos-currently-showing symbol)
|
|
|
682 (get-buffer hyper-apropos-help-buf)
|
|
|
683 (get-buffer-window hyper-apropos-help-buf)
|
|
|
684 (not force))
|
|
|
685 ;; we're already displaying this help, so toggle its display.
|
|
|
686 (delete-windows-on hyper-apropos-help-buf)
|
|
|
687 ;; OK, we've got to refresh and display it...
|
|
|
688 (or (eq symbol (car hyper-apropos-help-history))
|
|
|
689 (setq hyper-apropos-help-history
|
|
|
690 (if (eq major-mode 'hyper-apropos-help-mode)
|
|
|
691 ;; if we're following a link in the help buffer, then
|
|
|
692 ;; record that in the help history.
|
|
|
693 (cons symbol hyper-apropos-help-history)
|
|
|
694 ;; otherwise clear the history because it's a new search.
|
|
|
695 (list symbol))))
|
|
|
696 (save-excursion
|
|
|
697 (if (hyper-apropos-follow-ref-buffer this-ref-buffer)
|
|
|
698 (set-buffer hyper-apropos-ref-buffer)
|
|
|
699 (setq hyper-apropos-ref-buffer (current-buffer)))
|
|
|
700 (let (standard-output
|
|
|
701 ok beg
|
|
|
702 newsym symtype doc obsolete
|
|
|
703 (local mode-name)
|
|
|
704 global local-str global-str
|
|
|
705 font fore back undl
|
|
|
706 aliases alias-desc desc)
|
|
|
707 (save-excursion
|
|
|
708 (set-buffer (get-buffer-create hyper-apropos-help-buf))
|
|
|
709 ;;(setq standard-output (current-buffer))
|
|
|
710 (setq buffer-read-only nil)
|
|
|
711 (erase-buffer)
|
|
|
712 (insert-face (format "`%s'" symbol) 'hyper-apropos-major-heading)
|
|
|
713 (insert (format " (buffer: %s, mode: %s)\n"
|
|
|
714 (buffer-name hyper-apropos-ref-buffer)
|
|
|
715 local)))
|
|
|
716 ;; function ----------------------------------------------------------
|
|
|
717 (and (memq 'function type)
|
|
|
718 (fboundp symbol)
|
|
|
719 (progn
|
|
|
720 (setq ok t)
|
|
|
721 (setq aliases (hyper-apropos-get-alias (symbol-function symbol)
|
|
|
722 'symbolp
|
|
|
723 'symbol-function)
|
|
|
724 newsym (car aliases)
|
|
|
725 alias-desc (cdr aliases))
|
|
|
726 (if (eq 'macro (car-safe newsym))
|
|
|
727 (setq desc "macro"
|
|
|
728 newsym (cdr newsym))
|
|
|
729 (setq desc "function"))
|
|
|
730 (setq symtype (cond ((subrp newsym) 'subr)
|
|
|
731 ((compiled-function-p newsym) 'bytecode)
|
|
|
732 ((eq (car-safe newsym) 'autoload) 'autoload)
|
|
|
733 ((eq (car-safe newsym) 'lambda) 'lambda))
|
|
|
734 desc (concat (if (commandp symbol) "interactive ")
|
|
|
735 (cdr (assq symtype
|
|
|
736 '((subr . "built-in ")
|
|
|
737 (bytecode . "compiled Lisp ")
|
|
|
738 (autoload . "autoloaded Lisp ")
|
|
|
739 (lambda . "Lisp "))))
|
|
|
740 desc
|
|
|
741 (case symtype
|
|
|
742 ((autoload) (format ",\n(autoloaded from \"%s\")"
|
|
|
743 (nth 1 newsym)))
|
|
|
744 ((bytecode) (format ",\n(loaded from \"%s\")"
|
|
|
745 (symbol-file symbol)))))
|
|
|
746 local (current-local-map)
|
|
|
747 global (current-global-map)
|
|
|
748 obsolete (get symbol 'byte-obsolete-info)
|
|
|
749 doc (or (documentation symbol) "function not documented"))
|
|
|
750 (save-excursion
|
|
|
751 (set-buffer hyper-apropos-help-buf)
|
|
|
752 (goto-char (point-max))
|
|
|
753 (setq standard-output (current-buffer))
|
|
|
754 (hyper-apropos-insert-section-heading alias-desc desc)
|
|
|
755 (insert ":\n")
|
|
|
756 (if local
|
|
|
757 (hyper-apropos-insert-keybinding
|
|
|
758 (where-is-internal symbol (list local) nil nil nil)
|
|
|
759 "locally"))
|
|
|
760 (hyper-apropos-insert-keybinding
|
|
|
761 (where-is-internal symbol (list global) nil nil nil)
|
|
|
762 "globally")
|
|
|
763 (insert "\n")
|
|
|
764 (if obsolete
|
|
|
765 (hyper-apropos-insert-face
|
|
|
766 (format "%s is an obsolete function; %s\n\n" symbol
|
|
|
767 (if (stringp (car obsolete))
|
|
|
768 (car obsolete)
|
|
|
769 (format "use `%s' instead." (car obsolete))))
|
|
|
770 'hyper-apropos-warning))
|
|
|
771 (setq beg (point))
|
|
|
772 (insert-face "arguments: " 'hyper-apropos-heading)
|
|
|
773 (cond ((eq symtype 'lambda)
|
|
|
774 (princ (or (nth 1 newsym) "()")))
|
|
|
775 ((eq symtype 'bytecode)
|
|
|
776 (princ (or (compiled-function-arglist newsym)
|
|
|
777 "()")))
|
|
|
778 ((and (eq symtype 'subr)
|
|
|
779 (string-match
|
|
|
780 "[\n\t ]*\narguments: ?\\((.*)\\)\n?\\'"
|
|
|
781 doc))
|
|
|
782 (insert (substring doc
|
|
|
783 (match-beginning 1)
|
|
|
784 (match-end 1)))
|
|
|
785 (setq doc (substring doc 0 (match-beginning 0))))
|
|
|
786 ((and (eq symtype 'subr)
|
|
|
787 (string-match
|
|
|
788 "\
|
|
|
789 \[\n\t ]*([^\n\t )]+[\t ]*\\([^\n)]+\\)?)\\(:[\t ]*\\|\n?\\'\\)"
|
|
|
790 doc))
|
|
|
791 (insert "("
|
|
|
792 (if (match-end 1)
|
|
|
793 (substring doc
|
|
|
794 (match-beginning 1)
|
|
|
795 (match-end 1)))
|
|
|
796 ")")
|
|
|
797 (setq doc (substring doc (match-end 0))))
|
|
|
798 (t (princ "[not available]")))
|
|
|
799 (insert "\n\n")
|
|
|
800 (hyper-apropos-insert-face doc)
|
|
|
801 (insert "\n")
|
|
|
802 (indent-rigidly beg (point) 2))))
|
|
|
803 ;; variable ----------------------------------------------------------
|
|
|
804 (and (memq 'variable type)
|
|
|
805 (or (boundp symbol) (default-boundp symbol))
|
|
|
806 (progn
|
|
|
807 (setq ok t)
|
|
|
808 (setq aliases (hyper-apropos-get-alias symbol
|
|
|
809 'variable-alias
|
|
|
810 'variable-alias
|
|
|
811 'variable-alias)
|
|
|
812 newsym (car aliases)
|
|
|
813 alias-desc (cdr aliases))
|
|
|
814 (setq symtype (or (local-variable-p newsym (current-buffer))
|
|
|
815 (and (local-variable-p newsym
|
|
|
816 (current-buffer) t)
|
|
|
817 'auto-local))
|
|
|
818 desc (concat (and (get newsym 'custom-type)
|
|
|
819 "customizable ")
|
|
|
820 (if (user-variable-p newsym)
|
|
|
821 "user variable"
|
|
|
822 "variable")
|
|
|
823 (cond ((eq symtype t) ", buffer-local")
|
|
|
824 ((eq symtype 'auto-local)
|
|
|
825 ", local when set")))
|
|
|
826 local (and (boundp newsym)
|
|
|
827 (symbol-value newsym))
|
|
|
828 local-str (and (boundp newsym)
|
|
|
829 (prin1-to-string local))
|
|
|
830 global (and (eq symtype t)
|
|
|
831 (default-boundp newsym)
|
|
|
832 (default-value newsym))
|
|
|
833 global-str (and (eq symtype t)
|
|
|
834 (default-boundp newsym)
|
|
|
835 (prin1-to-string global))
|
|
|
836 obsolete (get symbol 'byte-obsolete-variable)
|
|
|
837 doc (or (documentation-property symbol
|
|
|
838 'variable-documentation)
|
|
|
839 "variable not documented"))
|
|
|
840 (save-excursion
|
|
|
841 (set-buffer hyper-apropos-help-buf)
|
|
|
842 (goto-char (point-max))
|
|
|
843 (setq standard-output (current-buffer))
|
|
|
844 (hyper-apropos-insert-section-heading alias-desc desc)
|
|
|
845 (when (and (user-variable-p newsym)
|
|
|
846 (get newsym 'custom-type))
|
|
|
847 (let ((e (make-extent (point-at-bol) (point))))
|
|
|
848 (set-extent-property e 'mouse-face 'highlight)
|
|
|
849 (set-extent-property e 'help-echo
|
|
|
850 (format "Customize %s" newsym))
|
|
|
851 (set-extent-property
|
|
|
852 e 'hyper-apropos-custom
|
|
|
853 `(lambda () (customize-variable (quote ,newsym))))))
|
|
|
854 (insert ":\n\n")
|
|
|
855 (setq beg (point))
|
|
|
856 (if obsolete
|
|
|
857 (hyper-apropos-insert-face
|
|
|
858 (format "%s is an obsolete function; %s\n\n" symbol
|
|
|
859 (if (stringp obsolete)
|
|
|
860 obsolete
|
|
|
861 (format "use `%s' instead." obsolete)))
|
|
|
862 'hyper-apropos-warning))
|
|
|
863 ;; generally, the value of the variable is short and the
|
|
|
864 ;; documentation of the variable long, so it's desirable
|
|
|
865 ;; to see all of the value and the start of the
|
|
|
866 ;; documentation. Some variables, though, have huge and
|
|
|
867 ;; nearly meaningless values that force you to page
|
|
|
868 ;; forward just to find the doc string. That is
|
|
|
869 ;; undesirable.
|
|
|
870 (if (and (or (null local-str) (< (length local-str) 69))
|
|
|
871 (or (null global-str) (< (length global-str) 69)))
|
|
|
872 ; 80 cols. docstrings assume this.
|
|
|
873 (progn (insert-face "value: " 'hyper-apropos-heading)
|
|
|
874 (insert (or local-str "is void"))
|
|
|
875 (if (eq symtype t)
|
|
|
876 (progn
|
|
|
877 (insert "\n")
|
|
|
878 (insert-face "default value: " 'hyper-apropos-heading)
|
|
|
879 (insert (or global-str "is void"))))
|
|
|
880 (insert "\n\n")
|
|
|
881 (hyper-apropos-insert-face doc))
|
|
|
882 (hyper-apropos-insert-value "value: " 'local-str local)
|
|
|
883 (if (eq symtype t)
|
|
|
884 (progn
|
|
|
885 (insert ", ")
|
|
|
886 (hyper-apropos-insert-value "default-value: "
|
|
|
887 'global-str global)))
|
|
|
888 (insert "\n\n")
|
|
|
889 (hyper-apropos-insert-face doc)
|
|
|
890 (if local-str
|
|
|
891 (progn
|
|
|
892 (newline 3) (delete-blank-lines) (newline 1)
|
|
|
893 (insert-face "value: " 'hyper-apropos-heading)
|
|
|
894 (if hyper-apropos-prettyprint-long-values
|
|
|
895 (condition-case nil
|
|
|
896 (cl-prettyprint local)
|
|
|
897 (error (insert local-str)))
|
|
|
898 (insert local-str))))
|
|
|
899 (if global-str
|
|
|
900 (progn
|
|
|
901 (newline 3) (delete-blank-lines) (newline 1)
|
|
|
902 (insert-face "default value: " 'hyper-apropos-heading)
|
|
|
903 (if hyper-apropos-prettyprint-long-values
|
|
|
904 (condition-case nil
|
|
|
905 (cl-prettyprint global)
|
|
|
906 (error (insert global-str)))
|
|
|
907 (insert global-str)))))
|
|
|
908 (indent-rigidly beg (point) 2))))
|
|
|
909 ;; face --------------------------------------------------------------
|
|
|
910 (and (memq 'face type)
|
|
|
911 (find-face symbol)
|
|
|
912 (progn
|
|
|
913 (setq ok t)
|
|
|
914 (copy-face symbol 'hyper-apropos-temp-face 'global)
|
|
|
915 (mapcar #'(lambda (property)
|
|
|
916 (setq symtype (face-property-instance symbol
|
|
|
917 property))
|
|
|
918 (if symtype
|
|
|
919 (set-face-property 'hyper-apropos-temp-face
|
|
|
920 property
|
|
|
921 symtype)))
|
|
|
922 built-in-face-specifiers)
|
|
|
923 (setq font (cons (face-property-instance symbol 'font nil 0 t)
|
|
|
924 (face-property-instance symbol 'font))
|
|
|
925 fore (cons (face-foreground-instance symbol nil 0 t)
|
|
|
926 (face-foreground-instance symbol))
|
|
|
927 back (cons (face-background-instance symbol nil 0 t)
|
|
|
928 (face-background-instance symbol))
|
|
|
929 undl (cons (face-underline-p symbol nil 0 t)
|
|
|
930 (face-underline-p symbol))
|
|
|
931 doc (face-doc-string symbol))
|
|
|
932 ;; #### - add some code here
|
|
|
933 (save-excursion
|
|
|
934 (set-buffer hyper-apropos-help-buf)
|
|
|
935 (setq standard-output (current-buffer))
|
|
|
936 (hyper-apropos-insert-section-heading
|
|
|
937 (concat "Face"
|
|
|
938 (when (get symbol 'face-defface-spec)
|
|
|
939 (let* ((str " (customizable)")
|
|
|
940 (e (make-extent 1 (length str) str)))
|
|
|
941 (set-extent-property e 'mouse-face 'highlight)
|
|
|
942 (set-extent-property e 'help-echo
|
|
|
943 (format "Customize %s" symbol))
|
|
|
944 (set-extent-property e 'unique t)
|
|
|
945 (set-extent-property e 'duplicable t)
|
|
|
946 (set-extent-property
|
|
|
947 e 'hyper-apropos-custom
|
|
|
948 `(lambda () (customize-face (quote ,symbol))))
|
|
|
949 str))
|
|
|
950 ":\n\n "))
|
|
|
951 (insert-face "\
|
|
|
952 ABCDEFHIJKLMNOPQRSTUVWXYZ abcdefhijklmnopqrstuvwxyz 0123456789"
|
|
|
953 'hyper-apropos-temp-face)
|
|
|
954 (newline 2)
|
|
|
955 (insert-face " Font: " 'hyper-apropos-heading)
|
|
|
956 (insert (format (if (numberp (car font)) "(%s)\n" "%s\n")
|
|
|
957 (and (cdr font)
|
|
|
958 (font-instance-name (cdr font)))))
|
|
|
959 (insert-face " Foreground: " 'hyper-apropos-heading)
|
|
|
960 (insert (format (if (numberp (car fore)) "(%s)\n" "%s\n")
|
|
|
961 (and (cdr fore)
|
|
|
962 (color-instance-name (cdr fore)))))
|
|
|
963 (insert-face " Background: " 'hyper-apropos-heading)
|
|
|
964 (insert (format (if (numberp (car back)) "(%s)\n" "%s\n")
|
|
|
965 (and (cdr back)
|
|
|
966 (color-instance-name (cdr back)))))
|
|
|
967 (insert-face " Underline: " 'hyper-apropos-heading)
|
|
|
968 (insert (format (if (numberp (car undl)) "(%s)\n" "%s\n")
|
|
|
969 (cdr undl)))
|
|
|
970 (if doc
|
|
|
971 (progn
|
|
|
972 (newline)
|
|
|
973 (setq beg (point))
|
|
|
974 (insert doc)
|
|
|
975 (indent-rigidly beg (point) 2))))))
|
|
|
976 ;; not bound & property list -----------------------------------------
|
|
|
977 (or ok
|
|
|
978 (save-excursion
|
|
|
979 (set-buffer hyper-apropos-help-buf)
|
|
|
980 (hyper-apropos-insert-section-heading
|
|
|
981 "symbol is not currently bound\n")))
|
|
|
982 (if (and (setq symtype (symbol-plist symbol))
|
|
|
983 (or (> (length symtype) 2)
|
|
|
984 (not (memq 'variable-documentation symtype))))
|
|
|
985 (save-excursion
|
|
|
986 (set-buffer hyper-apropos-help-buf)
|
|
|
987 (goto-char (point-max))
|
|
|
988 (setq standard-output (current-buffer))
|
|
|
989 (hyper-apropos-insert-section-heading "property-list:\n\n")
|
|
|
990 (while symtype
|
|
|
991 (if (memq (car symtype)
|
|
|
992 '(variable-documentation byte-obsolete-info))
|
|
|
993 (setq symtype (cdr symtype))
|
|
|
994 (insert-face (concat " " (symbol-name (car symtype))
|
|
|
995 ": ")
|
|
|
996 'hyper-apropos-heading)
|
|
|
997 (setq symtype (cdr symtype))
|
|
|
998 (indent-to 32)
|
|
|
999 (insert (prin1-to-string (car symtype)) "\n"))
|
|
|
1000 (setq symtype (cdr symtype)))))))
|
|
|
1001 (save-excursion
|
|
|
1002 (set-buffer hyper-apropos-help-buf)
|
|
|
1003 (goto-char (point-min))
|
|
|
1004 ;; pop up window and shrink it if it's wasting space
|
|
|
1005 (if hyper-apropos-shrink-window
|
|
|
1006 (shrink-window-if-larger-than-buffer
|
|
|
1007 (display-buffer (current-buffer)))
|
|
|
1008 (display-buffer (current-buffer)))
|
|
|
1009 (hyper-apropos-help-mode))
|
|
|
1010 (setq hyper-apropos-currently-showing symbol)))
|
|
|
1011 ;;;###autoload
|
|
|
1012 (define-obsolete-function-alias
|
|
|
1013 'hypropos-get-doc 'hyper-apropos-get-doc)
|
|
|
1014
|
|
|
1015 ; -----------------------------------------------------------------------------
|
|
|
1016
|
|
|
1017 (defun hyper-apropos-help-mode ()
|
|
|
1018 "Major mode for hypertext XEmacs help. In this mode, you can quickly
|
|
|
1019 follow links between back and forth between the documentation strings for
|
|
|
1020 different variables and functions. Common commands:
|
|
|
1021
|
|
|
1022 \\{hyper-apropos-help-map}"
|
|
|
1023 (setq buffer-read-only t
|
|
|
1024 major-mode 'hyper-apropos-help-mode
|
|
|
1025 mode-name "Hyper-Help")
|
|
|
1026 (set-syntax-table emacs-lisp-mode-syntax-table)
|
|
|
1027 (use-local-map hyper-apropos-help-map))
|
|
|
1028
|
|
|
1029 ;; ---------------------------------------------------------------------- ;;
|
|
|
1030
|
|
|
1031 (defun hyper-apropos-scroll-up ()
|
|
|
1032 "Scroll up the \"*Hyper Help*\" buffer if it's visible.
|
|
|
1033 Otherwise, scroll the selected window up."
|
|
|
1034 (interactive)
|
|
|
1035 (let ((win (get-buffer-window hyper-apropos-help-buf))
|
|
|
1036 (owin (selected-window)))
|
|
|
1037 (if win
|
|
|
1038 (progn
|
|
|
1039 (select-window win)
|
|
|
1040 (condition-case nil
|
|
|
1041 (scroll-up nil)
|
|
|
1042 (error (goto-char (point-max))))
|
|
|
1043 (select-window owin))
|
|
|
1044 (scroll-up nil))))
|
|
|
1045
|
|
|
1046 (defun hyper-apropos-scroll-down ()
|
|
|
1047 "Scroll down the \"*Hyper Help*\" buffer if it's visible.
|
|
|
1048 Otherwise, scroll the selected window down."
|
|
|
1049 (interactive)
|
|
|
1050 (let ((win (get-buffer-window hyper-apropos-help-buf))
|
|
|
1051 (owin (selected-window)))
|
|
|
1052 (if win
|
|
|
1053 (progn
|
|
|
1054 (select-window win)
|
|
|
1055 (condition-case nil
|
|
|
1056 (scroll-down nil)
|
|
|
1057 (error (goto-char (point-max))))
|
|
|
1058 (select-window owin))
|
|
|
1059 (scroll-down nil))))
|
|
|
1060
|
|
|
1061 ;; ---------------------------------------------------------------------- ;;
|
|
|
1062
|
|
|
1063 (defun hyper-apropos-mouse-get-doc (event)
|
|
|
1064 "Get the documentation for the symbol the mouse is on."
|
|
|
1065 (interactive "e")
|
|
|
1066 (mouse-set-point event)
|
|
|
1067 (let ((e (extent-at (point) nil 'hyper-apropos-custom)))
|
|
|
1068 (if e
|
|
|
1069 (funcall (extent-property e 'hyper-apropos-custom))
|
|
|
1070 (save-excursion
|
|
|
1071 (let ((symbol (hyper-apropos-this-symbol)))
|
|
|
1072 (if symbol
|
|
|
1073 (hyper-apropos-get-doc symbol)
|
|
|
1074 (error "Click on a symbol")))))))
|
|
|
1075
|
|
|
1076 ;; ---------------------------------------------------------------------- ;;
|
|
|
1077
|
|
|
1078 (defun hyper-apropos-add-keyword (pattern)
|
|
|
1079 "Use additional keyword to narrow regexp match.
|
|
|
1080 Deletes lines which don't match PATTERN."
|
|
|
1081 (interactive "sAdditional Keyword: ")
|
|
|
1082 (save-excursion
|
|
|
1083 (goto-char (point-min))
|
|
|
1084 (let (buffer-read-only)
|
|
|
1085 (keep-lines (concat pattern "\\|" hyper-apropos-junk-regexp))
|
|
|
1086 )))
|
|
|
1087
|
|
|
1088 (defun hyper-apropos-eliminate-keyword (pattern)
|
|
|
1089 "Use additional keyword to eliminate uninteresting matches.
|
|
|
1090 Deletes lines which match PATTERN."
|
|
|
1091 (interactive "sKeyword to eliminate: ")
|
|
|
1092 (save-excursion
|
|
|
1093 (goto-char (point-min))
|
|
|
1094 (let (buffer-read-only)
|
|
|
1095 (flush-lines pattern))
|
|
|
1096 ))
|
|
|
1097
|
|
|
1098 ;; ---------------------------------------------------------------------- ;;
|
|
|
1099
|
|
|
1100 (defun hyper-apropos-this-symbol ()
|
|
|
1101 (save-excursion
|
|
|
1102 (cond ((eq major-mode 'hyper-apropos-mode)
|
|
|
1103 (beginning-of-line)
|
|
|
1104 (if (looking-at hyper-apropos-junk-regexp)
|
|
|
1105 nil
|
|
|
1106 (forward-char 3)
|
|
|
1107 (read (point-marker))))
|
|
444
|
1108 ;; What's this? This ends up in the same symbol already described.
|
|
|
1109 ;; ((and
|
|
|
1110 ;; (eq major-mode 'hyper-apropos-help-mode)
|
|
|
1111 ;; (> (point) (point-min)))
|
|
|
1112 ;; (save-excursion
|
|
|
1113 ;; (goto-char (point-min))
|
|
|
1114 ;; (hyper-apropos-this-symbol)))
|
|
428
|
1115 (t
|
|
|
1116 (let* ((st (progn
|
|
|
1117 (skip-syntax-backward "w_")
|
|
|
1118 ;; !@(*$^%%# stupid backquote implementation!!!
|
|
|
1119 (skip-chars-forward "`")
|
|
|
1120 (point)))
|
|
|
1121 (en (progn
|
|
|
1122 (skip-syntax-forward "w_")
|
|
|
1123 (skip-chars-backward ".':") ; : for Local Variables
|
|
|
1124 (point))))
|
|
|
1125 (and (not (eq st en))
|
|
|
1126 (intern-soft (buffer-substring st en))))))))
|
|
|
1127
|
|
|
1128 (defun hyper-apropos-where-is (symbol)
|
|
|
1129 "Find keybinding for symbol on current line."
|
|
|
1130 (interactive (list (hyper-apropos-this-symbol)))
|
|
|
1131 (where-is symbol))
|
|
|
1132
|
|
|
1133 (defun hyper-apropos-invoke-fn (fn)
|
|
|
1134 "Interactively invoke the function on the current line."
|
|
|
1135 (interactive (list (hyper-apropos-this-symbol)))
|
|
|
1136 (cond ((not (fboundp fn))
|
|
|
1137 (error "%S is not a function" fn))
|
|
|
1138 (t (call-interactively fn))))
|
|
|
1139
|
|
|
1140 ;;;###autoload
|
|
|
1141 (defun hyper-set-variable (var val &optional this-ref-buffer)
|
|
|
1142 (interactive
|
|
|
1143 (let ((var (hyper-apropos-read-variable-symbol
|
|
|
1144 (if (hyper-apropos-follow-ref-buffer current-prefix-arg)
|
|
|
1145 "In ref buffer, set user option"
|
|
|
1146 "Set user option")
|
|
|
1147 'user-variable-p)))
|
|
|
1148 (list var (hyper-apropos-read-variable-value var) current-prefix-arg)))
|
|
|
1149 (hyper-apropos-set-variable var val this-ref-buffer))
|
|
|
1150
|
|
|
1151 ;;;###autoload
|
|
|
1152 (defun hyper-apropos-set-variable (var val &optional this-ref-buffer)
|
|
|
1153 "Interactively set the variable on the current line."
|
|
|
1154 (interactive
|
|
|
1155 (let ((var (hyper-apropos-this-symbol)))
|
|
|
1156 (or (and var (boundp var))
|
|
|
1157 (setq var nil))
|
|
|
1158 (list var (hyper-apropos-read-variable-value var))))
|
|
|
1159 (and var
|
|
|
1160 (boundp var)
|
|
|
1161 (progn
|
|
|
1162 (if (hyper-apropos-follow-ref-buffer this-ref-buffer)
|
|
|
1163 (save-excursion
|
|
|
1164 (set-buffer hyper-apropos-ref-buffer)
|
|
|
1165 (set var val))
|
|
|
1166 (set var val))
|
|
|
1167 (hyper-apropos-get-doc var t '(variable) this-ref-buffer))))
|
|
|
1168 ;;;###autoload
|
|
|
1169 (define-obsolete-function-alias
|
|
|
1170 'hypropos-set-variable 'hyper-apropos-set-variable)
|
|
|
1171
|
|
|
1172 (defun hyper-apropos-read-variable-value (var &optional this-ref-buffer)
|
|
|
1173 (and var
|
|
|
1174 (boundp var)
|
|
|
1175 (let ((prop (get var 'variable-interactive))
|
|
|
1176 (print-readably t)
|
|
|
1177 val str)
|
|
|
1178 (hyper-apropos-get-doc var t '(variable) current-prefix-arg)
|
|
|
1179 (if prop
|
|
|
1180 (call-interactively (list 'lambda '(arg)
|
|
|
1181 (list 'interactive prop)
|
|
|
1182 'arg))
|
|
|
1183 (setq val (if (hyper-apropos-follow-ref-buffer this-ref-buffer)
|
|
|
1184 (save-excursion
|
|
|
1185 (set-buffer hyper-apropos-ref-buffer)
|
|
|
1186 (symbol-value var))
|
|
|
1187 (symbol-value var))
|
|
|
1188 str (prin1-to-string val))
|
|
|
1189 (eval-minibuffer
|
|
|
1190 (format "Set %s `%s' to value (evaluated): "
|
|
|
1191 (if (user-variable-p var) "user option" "Variable")
|
|
|
1192 var)
|
|
|
1193 (condition-case nil
|
|
|
1194 (progn
|
|
|
1195 (read str)
|
|
|
1196 (format (if (or (consp val)
|
|
|
1197 (and (symbolp val)
|
|
|
1198 (not (memq val '(t nil)))))
|
|
|
1199 "'%s" "%s")
|
|
|
1200 str))
|
|
|
1201 (error nil)))))))
|
|
|
1202
|
|
|
1203 (defun hyper-apropos-customize-variable ()
|
|
|
1204 (interactive)
|
|
|
1205 (let ((var (hyper-apropos-this-symbol)))
|
|
430
|
1206 (and
|
|
|
1207 (or (and var (boundp var))
|
|
|
1208 (setq var nil))
|
|
|
1209 (customize-variable var))))
|
|
428
|
1210
|
|
|
1211 ;; ---------------------------------------------------------------------- ;;
|
|
|
1212
|
|
|
1213 (defun hyper-apropos-find-tag (&optional tag-name)
|
|
|
1214 "Find the tag for the symbol on the current line in other window. In
|
|
|
1215 order for this to work properly, the variable `tag-table-alist' or
|
|
|
1216 `tags-file-name' must be set so that a TAGS file with tags for the emacs
|
|
|
1217 source is found for the \"*Hyper Apropos*\" buffer."
|
|
|
1218 (interactive)
|
|
|
1219 ;; there ought to be a default tags file for this...
|
|
|
1220 (or tag-name (setq tag-name (symbol-name (hyper-apropos-this-symbol))))
|
|
|
1221 (find-tag-other-window (list tag-name)))
|
|
|
1222
|
|
|
1223 ;; ---------------------------------------------------------------------- ;;
|
|
|
1224
|
|
|
1225 (defun hyper-apropos-find-function (fn)
|
|
|
1226 "Find the function for the symbol on the current line in other
|
|
|
1227 window. (See also `find-function'.)"
|
|
|
1228 (interactive
|
|
|
1229 (let ((fn (hyper-apropos-this-symbol)))
|
|
|
1230 (or (fboundp fn)
|
|
|
1231 (setq fn nil))
|
|
|
1232 (list fn)))
|
|
|
1233 (if fn
|
|
|
1234 (find-function-other-window fn)))
|
|
|
1235
|
|
|
1236 ;; ---------------------------------------------------------------------- ;;
|
|
|
1237
|
|
|
1238 (defun hyper-apropos-disassemble (sym)
|
|
|
1239 "Disassemble FUN if it is byte-coded. If it's a lambda, prettyprint it."
|
|
|
1240 (interactive (list (hyper-apropos-this-symbol)))
|
|
|
1241 (let ((fun sym) (trail nil) macrop)
|
|
|
1242 (while (and (symbolp fun) (not (memq fun trail)))
|
|
|
1243 (setq trail (cons fun trail)
|
|
|
1244 fun (symbol-function fun)))
|
|
|
1245 (and (symbolp fun)
|
|
|
1246 (error "Loop detected in function binding of `%s'" fun))
|
|
|
1247 (setq macrop (and (consp fun)
|
|
|
1248 (eq 'macro (car fun))))
|
|
|
1249 (cond ((compiled-function-p (if macrop (cdr fun) fun))
|
|
|
1250 (disassemble fun)
|
|
|
1251 (set-buffer "*Disassemble*")
|
|
|
1252 (goto-char (point-min))
|
|
|
1253 (forward-sexp 2)
|
|
|
1254 (insert (format " for function `%S'" sym))
|
|
|
1255 )
|
|
|
1256 ((consp fun)
|
|
|
1257 (with-current-buffer "*Disassemble*"
|
|
|
1258 (cl-prettyprint (if macrop
|
|
|
1259 (cons 'defmacro (cons sym (cdr (cdr fun))))
|
|
|
1260 (cons 'defun (cons sym (cdr fun))))))
|
|
|
1261 (set-buffer "*Disassemble*")
|
|
|
1262 (emacs-lisp-mode))
|
|
|
1263 ((or (vectorp fun) (stringp fun))
|
|
|
1264 ;; #### - do something fancy here
|
|
|
1265 (with-output-to-temp-buffer "*Disassemble*"
|
|
|
1266 (princ (format "%s is a keyboard macro:\n\n\t" sym))
|
|
|
1267 (prin1 fun)))
|
|
|
1268 (t
|
|
|
1269 (error "Sorry, cannot disassemble `%s'" sym)))))
|
|
|
1270
|
|
|
1271 ;; ---------------------------------------------------------------------- ;;
|
|
|
1272
|
|
|
1273 (defun hyper-apropos-quit ()
|
|
|
1274 (interactive)
|
|
|
1275 "Quit Hyper Apropos and restore original window config."
|
|
|
1276 (let ((buf (get-buffer hyper-apropos-apropos-buf)))
|
|
|
1277 (and buf (bury-buffer buf)))
|
|
|
1278 (set-window-configuration hyper-apropos-prev-wconfig))
|
|
|
1279
|
|
|
1280 ;; ---------------------------------------------------------------------- ;;
|
|
|
1281
|
|
|
1282 ;;;###autoload
|
|
|
1283 (defun hyper-apropos-popup-menu (event)
|
|
|
1284 (interactive "e")
|
|
|
1285 (mouse-set-point event)
|
|
430
|
1286 (let* ((sym (hyper-apropos-this-symbol))
|
|
428
|
1287 (notjunk (not (null sym)))
|
|
|
1288 (command-p (if (commandp sym) t))
|
|
|
1289 (variable-p (and sym (boundp sym)))
|
|
|
1290 (customizable-p (and variable-p
|
|
|
1291 (get sym 'custom-type)
|
|
|
1292 t))
|
|
|
1293 (function-p (fboundp sym))
|
|
|
1294 (apropos-p (eq 'hyper-apropos-mode
|
|
|
1295 (save-excursion (set-buffer (event-buffer event))
|
|
|
1296 major-mode)))
|
|
|
1297 (name (if sym (symbol-name sym) ""))
|
|
|
1298 (hyper-apropos-menu
|
|
|
1299 (delete
|
|
|
1300 nil
|
|
|
1301 (list (concat "Hyper-Help: " name)
|
|
|
1302 (vector "Display documentation" 'hyper-apropos-get-doc notjunk)
|
|
|
1303 (vector "Set variable" 'hyper-apropos-set-variable variable-p)
|
|
|
1304 (vector "Customize variable" 'hyper-apropos-customize-variable
|
|
|
1305 customizable-p)
|
|
|
1306 (vector "Show keys for" 'hyper-apropos-where-is command-p)
|
|
|
1307 (vector "Invoke command" 'hyper-apropos-invoke-fn command-p)
|
|
|
1308 (vector "Find function" 'hyper-apropos-find-function function-p)
|
|
|
1309 (vector "Find tag" 'hyper-apropos-find-tag notjunk)
|
|
|
1310 (and apropos-p
|
|
|
1311 ["Add keyword..." hyper-apropos-add-keyword t])
|
|
|
1312 (and apropos-p
|
|
|
1313 ["Eliminate keyword..." hyper-apropos-eliminate-keyword t])
|
|
|
1314 (if apropos-p
|
|
|
1315 ["Programmers' Apropos" hyper-apropos-toggle-programming-flag
|
|
|
1316 :style toggle :selected hyper-apropos-programming-apropos]
|
|
|
1317 ["Programmers' Help" hyper-apropos-toggle-programming-flag
|
|
|
1318 :style toggle :selected hyper-apropos-programming-apropos])
|
|
|
1319 (and hyper-apropos-programming-apropos
|
|
|
1320 (vector "Disassemble function"
|
|
|
1321 'hyper-apropos-disassemble
|
|
|
1322 function-p))
|
|
|
1323 ["Help" describe-mode t]
|
|
|
1324 ["Quit" hyper-apropos-quit t]
|
|
|
1325 ))))
|
|
|
1326 (popup-menu hyper-apropos-menu)))
|
|
|
1327 ;;;###autoload
|
|
|
1328 (define-obsolete-function-alias
|
|
|
1329 'hypropos-popup-menu 'hyper-apropos-popup-menu)
|
|
|
1330
|
|
|
1331 (provide 'hyper-apropos)
|
|
|
1332
|
|
|
1333 ;; end of hyper-apropos.el
|
