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1 ;;; hyper-apropos.el --- Hypertext emacs lisp documentation interface.
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2
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3 ;; Copyright (C) 1994, 1995 Tinker Systems and INS Engineering Corp.
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4 ;; Copyright (C) 1995 Sun Microsystems.
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5 ;; Copyright (C) 1996 Ben Wing.
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6
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7 ;; Maintainer: Jonathan Stigelman <Stig@hackvan.com>
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8 ;; Keywords: lisp, tools, help, docs, matching
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9
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10 ;; This file is part of XEmacs.
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11
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12 ;; XEmacs is free software; you can redistribute it and/or modify
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13 ;; it under the terms of the GNU General Public License as published by
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14 ;; the Free Software Foundation; either version 2 of the License, or
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15 ;; (at your option) any later version.
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16 ;;
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17 ;; XEmacs is distributed in the hope that it will be useful,
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18 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 ;; GNU General Public License for more details.
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21 ;;
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22 ;; You should have received a copy of the GNU General Public License
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23 ;; along with XEmacs; if not, write to the Free Software
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24 ;; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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25
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26 ;;; Synched up with: Not in FSF.
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27
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28 ;;; Commentary:
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29
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30 ;; based upon emacs-apropos.el by Frank C. Guida <fcg@philabs.philips.com>
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31 ;;
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32 ;; Rather than run apropos and print all the documentation at once,
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33 ;; I find it easier to view a "table of contents" first, then
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34 ;; get the details for symbols as you need them.
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35 ;;
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36 ;; This version of apropos prints two lists of symbols matching the
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37 ;; given regexp: functions/macros and variables/constants.
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38 ;;
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39 ;; The user can then do the following:
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40 ;;
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41 ;; - add an additional regexp to narrow the search
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42 ;; - display documentation for the current symbol
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43 ;; - find the tag for the current symbol
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44 ;; - show any keybindings if the current symbol is a command
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45 ;; - invoke functions
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46 ;; - set variables
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47 ;;
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48 ;; An additional feature is the ability to search the current tags
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49 ;; table, allowing you to interrogate functions not yet loaded (this
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50 ;; isn't available with the standard package).
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51 ;;
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52 ;; Mouse bindings and menus are provided for XEmacs.
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53 ;;
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54 ;; additions by Ben Wing <wing@666.com> July 1995:
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55 ;; added support for function aliases, made programmer's apropos be the
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56 ;; default, various other hacking.
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108
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57 ;; Massive changes by Christoph Wedler <wedler@fmi.uni-passau.de>
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58
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59 ;;; Code:
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60
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61 (or (fboundp 'pprint)
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62 (progn (autoload 'pp "pp")
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63 (fset 'pprint 'pp)))
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64 ;;(require 'tags "etags")
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65
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66 ;;;###autoload
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67 (defvar hypropos-show-brief-docs t
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68 "*If non-nil, `hyper-apropos' will display some documentation in the
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69 \"*Hyper Apropos*\" buffer. Setting this to nil will speed up searches.")
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70
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108
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71 (defvar hypropos-shrink-window nil
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72 "*If non-nil, shrink *Hyper Help* buffer if possible.")
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73
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0
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74 (defvar hypropos-prettyprint-long-values t
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75 "*If non-nil, then try to beautify the printing of very long values.")
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76
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77 ;; I changed this to true because I think it's more useful this way. --ben
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78
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79 (defvar hypropos-programming-apropos t
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80 "*If non-nil, then `hyper-apropos' takes a bit longer and generates more
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81 output. If nil, then only functions that are interactive and variables that
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82 are user variables are found by `hyper-apropos'.")
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83
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108
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84 (defvar hypropos-ref-buffer)
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85 (defvar hypropos-prev-wconfig)
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86
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87 ;; #### - move this to subr.el
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88 (or (fboundp 'event-buffer)
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89 (defun event-buffer (event)
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90 "Returns the buffer associated with event, or nil."
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91 (let ((win (event-window event)))
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92 (and win (window-buffer win)))))
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93
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94 (defmacro eval-in-buffer (buffer &rest forms)
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95 "Evaluate FORMS in BUFFER."
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96 (` (let ((_unwind_buf_ (current-buffer)))
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97 (unwind-protect
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98 (progn (set-buffer (, buffer))
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99 (,@ forms))
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100 (set-buffer _unwind_buf_)))))
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101 (put 'eval-in-buffer 'lisp-indent-function 'defun)
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102
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103 ;; #### - move to faces.el
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104 (defmacro init-face (face &rest init-forms)
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105 "Make a FACE if it doesn't already exist. Then if it does not differ from
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106 the default face, execute INIT-FORMS to initialize the face. While the
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107 init-forms are executing, the symbol `this' is bound to the face-object
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108 being initialized."
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109 (` (let ((this (make-face (, face)))) ; harmless if the face is already there
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110 (or (face-differs-from-default-p this)
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111 (, (cons 'progn init-forms))))))
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112 (put 'init-face 'lisp-indent-function 'defun)
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113
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114 (init-face 'hyperlink
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115 (copy-face 'bold this)
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116 ;;(set-face-underline-p this nil) -- dog slow and ugly
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117 (condition-case nil
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118 (set-face-foreground this "blue")
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119 (error nil)))
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120 (init-face 'documentation
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121 (let* ((ff-instance (face-font-instance 'default))
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122 (ff (and ff-instance (font-instance-name ff-instance))))
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123 (cond ((and ff (string-match "courier" ff))
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124 ;; too wide unless you shrink it
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125 ;; (copy-face 'italic this) fugly.
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126 ;; (make-face-smaller this) fugly.
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127 ))
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128 (condition-case nil
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129 (set-face-foreground this "firebrick")
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130 (error (copy-face 'italic this)))))
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131
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132 ;; mucking with the sizes of fonts (perhaps with the exception of courier or
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133 ;; misc) is a generally losing thing to do. Changing the size of 'clean'
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134 ;; really loses, for instance...
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135
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136 (init-face 'major-heading
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137 (copy-face 'bold this)
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138 (make-face-larger this)
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139 (make-face-larger this))
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140 (init-face 'section-heading
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141 (copy-face 'bold this)
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142 (make-face-larger this))
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143 (init-face 'heading
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144 (copy-face 'bold this))
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145 (init-face 'standout
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146 (copy-face 'italic this))
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147
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148 (init-face 'warning
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149 (copy-face 'bold this)
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150 (and (eq (device-type) 'x)
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151 (eq (device-class) 'color)
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152 (set-face-foreground this "red")))
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153
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154 (defvar hypropos-help-map (let ((map (make-sparse-keymap)))
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155 (suppress-keymap map)
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156 (set-keymap-name map 'hypropos-help-map)
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157 ;; movement
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158 (define-key map " " 'scroll-up)
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159 (define-key map "b" 'scroll-down)
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116
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160 (define-key map [delete] 'scroll-down)
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161 (define-key map [backspace] 'scroll-down)
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162 (define-key map "/" 'isearch-forward)
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163 (define-key map "?" 'isearch-backward)
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164 ;; follow links
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165 (define-key map "\r" 'hypropos-get-doc)
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166 (define-key map "s" 'hypropos-set-variable)
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167 (define-key map "t" 'hypropos-find-tag)
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168 (define-key map "l" 'hypropos-last-help)
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169 (define-key map [button2] 'hypropos-mouse-get-doc)
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170 (define-key map [button3] 'hypropos-popup-menu)
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171 ;; for the totally hardcore...
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172 (define-key map "D" 'hypropos-disassemble)
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173 ;; administrativa
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174 (define-key map "a" 'hyper-apropos)
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175 (define-key map "n" 'hyper-apropos)
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176 (define-key map "q" 'hypropos-quit)
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177 map
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178 )
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179 "Keybindings for both the *Hyper Help* buffer and the *Hyper Apropos* buffer")
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180
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181 (defvar hypropos-map (let ((map (make-sparse-keymap)))
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182 (set-keymap-name map 'hypropos-map)
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183 (set-keymap-parents map (list hypropos-help-map))
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108
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184 ;; slightly different scrolling...
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185 (define-key map " " 'hypropos-scroll-up)
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186 (define-key map "b" 'hypropos-scroll-down)
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116
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187 (define-key map [delete] 'hypropos-scroll-down)
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188 (define-key map [backspace] 'hypropos-scroll-down)
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189 ;; act on the current line...
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190 (define-key map "w" 'hypropos-where-is)
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191 (define-key map "i" 'hypropos-invoke-fn)
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192 (define-key map "s" 'hypropos-set-variable)
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193 ;; more administrativa...
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194 (define-key map "P" 'hypropos-toggle-programming-flag)
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195 (define-key map "k" 'hypropos-add-keyword)
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196 (define-key map "e" 'hypropos-eliminate-keyword)
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197 map
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198 )
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199 "Keybindings for the *Hyper Apropos* buffer.
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200 This map inherits from `hypropos-help-map.'")
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201
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202 (defvar hyper-apropos-mode-hook nil
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203 "*User function run after hyper-apropos mode initialization. Usage:
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204 \(setq hyper-apropos-mode-hook '(lambda () ... your init forms ...)).")
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205
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206 ;; ---------------------------------------------------------------------- ;;
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207
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208 (defconst hypropos-junk-regexp "^Apropos\\|^Functions\\|^Variables\\|^$")
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209
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210 (defvar hypropos-currently-showing nil) ; symbol documented in help buffer now
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211 (defvar hypropos-help-history nil) ; chain of symbols followed as links in
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212 ; help buffer
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108
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213 (defvar hypropos-face-history nil)
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214 ;;;(defvar hypropos-variable-history nil)
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215 ;;;(defvar hypropos-function-history nil)
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216 (defvar hypropos-regexp-history nil)
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217 (defvar hypropos-last-regexp nil) ; regex used for last apropos
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218 (defconst hypropos-apropos-buf "*Hyper Apropos*")
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219 (defconst hypropos-help-buf "*Hyper Help*")
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220
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221 ;;;###autoload
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222 (defun hyper-apropos (regexp toggle-apropos)
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223 "Display lists of functions and variables matching REGEXP
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224 in buffer \"*Hyper Apropos*\". If optional prefix arg is given, then the value
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225 of `hypropos-programming-apropos' is toggled for this search.
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226 See also `hyper-apropos-mode'."
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108
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227 (interactive (list (read-from-minibuffer "List symbols matching regexp: "
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228 nil nil nil 'hypropos-regexp-history)
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229 current-prefix-arg))
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230 (or (memq major-mode '(hyper-apropos-mode hyper-help-mode))
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231 (setq hypropos-prev-wconfig (current-window-configuration)))
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232 (if (string= "" regexp)
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233 (if (get-buffer hypropos-apropos-buf)
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234 (if toggle-apropos
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235 (hypropos-toggle-programming-flag)
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236 (message "Using last search results"))
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237 (error "Be more specific..."))
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238 (let (flist vlist)
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239 (set-buffer (get-buffer-create hypropos-apropos-buf))
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240 (setq buffer-read-only nil)
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241 (erase-buffer)
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242 (if toggle-apropos
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243 (set (make-local-variable 'hypropos-programming-apropos)
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244 (not (default-value 'hypropos-programming-apropos))))
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245 (if (not hypropos-programming-apropos)
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246 (setq flist (apropos-internal regexp 'commandp)
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247 vlist (apropos-internal regexp 'user-variable-p))
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248 ;; #### - add obsolete functions/variables here...
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249 ;; #### - 'variables' may be unbound !!!
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250 (setq flist (apropos-internal regexp 'fboundp)
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251 vlist (apropos-internal regexp 'boundp)))
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252 (insert-face (format "Apropos search for: %S\n\n" regexp) 'major-heading)
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253 (insert-face "* = command (M-x) or user-variable.\n" 'documentation)
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254 (insert-face "a = autoloaded, b = byte-compiled, i = internal, l = lambda, m = macro.\n\n" 'documentation)
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255 (insert-face "Functions and Macros:\n\n" 'major-heading)
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256 (hypropos-grok-functions flist)
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257 (insert-face "\n\nVariables and Constants:\n\n" 'major-heading)
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258 (hypropos-grok-variables vlist)
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259 (goto-char (point-min))
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260 ))
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261 (switch-to-buffer hypropos-apropos-buf)
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262 (hyper-apropos-mode regexp))
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263
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264 (defun hypropos-toggle-programming-flag ()
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265 (interactive)
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266 (eval-in-buffer hypropos-apropos-buf
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267 (set (make-local-variable 'hypropos-programming-apropos)
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268 (not hypropos-programming-apropos)))
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269 (message "Re-running apropos...")
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270 (hyper-apropos hypropos-last-regexp nil))
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271
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272 (defun hypropos-grok-functions (fns)
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108
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273 (let (fn bind doc type)
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274 (while (setq fn (car fns))
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275 (setq bind (symbol-function fn)
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276 type (cond ((subrp bind) ?i)
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277 ((compiled-function-p bind) ?b)
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278 ((consp bind) (or (cdr
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279 (assq (car bind) '((autoload . ?a)
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280 (lambda . ?l)
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281 (macro . ?m))))
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282 ??))
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283 (t ? )))
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284 (insert type (if (commandp fn) "* " " "))
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285 (insert-face (format "%-30S" fn) 'hyperlink)
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286 (and hypropos-show-brief-docs
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108
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287 (setq doc (documentation fn))
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288 (insert-face (if doc
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289 (concat " - "
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290 (substring doc 0 (string-match "\n" doc)))
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291 " Not documented.")
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292 'documentation))
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293 (insert ?\n)
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294 (setq fns (cdr fns))
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295 )))
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296
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297 (defun hypropos-grok-variables (vars)
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108
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298 (let (var doc userp)
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299 (while (setq var (car vars))
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300 (setq userp (user-variable-p var)
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301 vars (cdr vars))
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302 (insert (if userp " * " " "))
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303 (insert-face (format "%-30S" var) 'hyperlink)
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304 (and hypropos-show-brief-docs
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108
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305 (setq doc (documentation-property var 'variable-documentation))
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306 (insert-face (if doc
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307 (concat " - " (substring doc (if userp 1 0)
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308 (string-match "\n" doc)))
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309 " - Not documented.")
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310 'documentation))
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311 (insert ?\n)
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312 )))
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313
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314 ;; ---------------------------------------------------------------------- ;;
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315
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316 (defun hyper-apropos-mode (regexp)
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317 "Improved apropos mode for displaying Emacs documentation. Function and
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318 variable names are displayed in the buffer \"*Hyper Apropos*\".
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319
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320 Functions are preceded by a single character to indicates their types:
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321 a = autoloaded, b = byte-compiled, i = internal, l = lambda, m = macro.
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322 Interactive functions are also preceded by an asterisk.
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323 Variables are preceded by an asterisk if they are user variables.
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324
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325 General Commands:
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326
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327 SPC - scroll documentation or apropos window forward
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328 b - scroll documentation or apropos window backward
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329 k - eliminate all hits that don't contain keyword
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330 n - new search
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331 / - isearch-forward
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332 q - quit and restore previous window configuration
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333
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334 Operations for Symbol on Current Line:
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335
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336 RET - toggle display of symbol's documentation
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337 (also on button2 in xemacs)
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338 w - show the keybinding if symbol is a command
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339 i - invoke function on current line
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340 s - set value of variable on current line
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341 t - display the C or lisp source (find-tag)"
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342 (delete-other-windows)
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343 (setq mode-name "Hyper-Apropos"
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344 major-mode 'hyper-apropos-mode
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345 buffer-read-only t
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346 truncate-lines t
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347 hypropos-last-regexp regexp
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82
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348 modeline-buffer-identification
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349 (list (cons modeline-buffer-id-left-extent "Hyper Apropos: ")
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350 (cons modeline-buffer-id-right-extent (concat "\"" regexp "\""))))
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0
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351 (setq mode-motion-hook 'mode-motion-highlight-line)
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352 (use-local-map hypropos-map)
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353 (run-hooks 'hyper-apropos-mode-hook))
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354
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355 ;; ---------------------------------------------------------------------- ;;
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356
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108
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357 ;; similar to `describe-key-briefly', copied from prim/help.el by CW
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358
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0
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359 ;;;###autoload
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108
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360 (defun hyper-describe-key (key)
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361 (interactive "kDescribe key: ")
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|
|
362 (hyper-describe-key-briefly key t))
|
|
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363
|
|
|
364 ;;;###autoload
|
|
|
365 (defun hyper-describe-key-briefly (key &optional show)
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|
|
366 (interactive "kDescribe key briefly: \nP")
|
|
|
367 (let (menup defn interm final msg)
|
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|
368 (setq defn (key-or-menu-binding key 'menup))
|
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|
369 (if (or (null defn) (integerp defn))
|
|
|
370 (or (numberp show) (message "%s is undefined" (key-description key)))
|
|
|
371 (cond ((stringp defn)
|
|
|
372 (setq interm defn
|
|
|
373 final (key-binding defn)))
|
|
|
374 ((vectorp defn)
|
|
|
375 (setq interm (append defn nil))
|
|
|
376 (while (and interm
|
|
|
377 (member (key-binding (vector (car interm)))
|
|
|
378 '(universal-argument digit-argument)))
|
|
|
379 (setq interm (cdr interm)))
|
|
|
380 (while (and interm
|
|
|
381 (not (setq final (key-binding (vconcat interm)))))
|
|
|
382 (setq interm (butlast interm)))
|
|
|
383 (if final
|
|
|
384 (setq interm (vconcat interm))
|
|
|
385 (setq interm defn
|
|
|
386 final (key-binding defn)))))
|
|
|
387 (setq msg (format
|
|
|
388 "%s runs %s%s%s"
|
|
|
389 ;; This used to say 'This menu item' but it could also
|
|
|
390 ;; be a scrollbar event. We can't distinguish at the
|
|
|
391 ;; moment.
|
|
|
392 (if menup "This item" (key-description key))
|
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|
393 ;;(if (symbolp defn) defn (key-description defn))
|
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|
394 (if (symbolp defn) defn (prin1-to-string defn))
|
|
|
395 (if final (concat ", " (key-description interm) " runs ") "")
|
|
|
396 (if final
|
|
|
397 (if (symbolp final) final (prin1-to-string final))
|
|
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398 "")))
|
|
|
399 (if (numberp show)
|
|
|
400 (or (not (symbolp defn))
|
|
|
401 (memq (symbol-function defn)
|
|
|
402 '(zkey-init-kbd-macro zkey-init-kbd-fn))
|
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|
403 (progn (princ msg) (princ "\n")))
|
|
|
404 (message "%s" msg)
|
|
|
405 (if final (setq defn final))
|
|
|
406 (if (and (or (symbolp defn) (symbolp (setq defn (car-safe defn))))
|
|
|
407 defn
|
|
|
408 show)
|
|
|
409 (hypropos-get-doc defn t))))))
|
|
|
410
|
|
|
411 ;;;###autoload
|
|
|
412 (defun hyper-describe-face (symbol &optional this-ref-buffer)
|
|
|
413 "Describe face..
|
|
30
|
414 See also `hyper-apropos' and `hyper-describe-function'."
|
|
|
415 ;; #### - perhaps a prefix arg should suppress the prompt...
|
|
108
|
416 (interactive
|
|
|
417 (let (v val)
|
|
|
418 (setq v (hypropos-this-symbol)) ; symbol under point
|
|
|
419 (or (find-face v)
|
|
|
420 (setq v (variable-at-point)))
|
|
|
421 (setq val (let ((enable-recursive-minibuffers t))
|
|
70
|
422 (completing-read
|
|
108
|
423 (concat (if (hypropos-follow-ref-buffer current-prefix-arg)
|
|
|
424 "Follow face"
|
|
|
425 "Describe face")
|
|
|
426 (if v
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|
|
427 (format " (default %s): " v)
|
|
|
428 ": "))
|
|
|
429 (mapcar (function (lambda (x) (list (symbol-name x))))
|
|
|
430 (face-list))
|
|
|
431 nil t nil 'hypropos-face-history)))
|
|
|
432 (list (if (string= val "")
|
|
|
433 (progn (push (symbol-name v) hypropos-face-history) v)
|
|
|
434 (intern-soft val))
|
|
|
435 current-prefix-arg)))
|
|
0
|
436 (if (null symbol)
|
|
|
437 (message "Sorry, nothing to describe.")
|
|
|
438 (or (memq major-mode '(hyper-apropos-mode hyper-help-mode))
|
|
|
439 (setq hypropos-prev-wconfig (current-window-configuration)))
|
|
108
|
440 (hypropos-get-doc symbol t nil this-ref-buffer)))
|
|
30
|
441
|
|
|
442 ;;;###autoload
|
|
108
|
443 (defun hyper-describe-variable (symbol &optional this-ref-buffer)
|
|
|
444 "Hypertext drop-in replacement for `describe-variable'.
|
|
|
445 See also `hyper-apropos' and `hyper-describe-function'."
|
|
|
446 ;; #### - perhaps a prefix arg should suppress the prompt...
|
|
|
447 (interactive (list (hypropos-read-variable-symbol
|
|
|
448 (if (hypropos-follow-ref-buffer current-prefix-arg)
|
|
|
449 "Follow variable"
|
|
|
450 "Describe variable"))
|
|
|
451 current-prefix-arg))
|
|
|
452 (if (null symbol)
|
|
|
453 (message "Sorry, nothing to describe.")
|
|
|
454 (or (memq major-mode '(hyper-apropos-mode hyper-help-mode))
|
|
|
455 (setq hypropos-prev-wconfig (current-window-configuration)))
|
|
|
456 (hypropos-get-doc symbol t nil this-ref-buffer)))
|
|
|
457
|
|
|
458 (defun hyper-where-is (symbol)
|
|
|
459 "Print message listing key sequences that invoke specified command."
|
|
|
460 (interactive (list (hypropos-read-function-symbol "Where is function")))
|
|
|
461 (if (null symbol)
|
|
|
462 (message "Sorry, nothing to describe.")
|
|
|
463 (where-is symbol)))
|
|
|
464
|
|
|
465 ;;;###autoload
|
|
|
466 (defun hyper-describe-function (symbol &optional this-ref-buffer)
|
|
70
|
467 "Hypertext replacement for `describe-function'. Unlike `describe-function'
|
|
|
468 in that the symbol under the cursor is the default if it is a function.
|
|
|
469 See also `hyper-apropos' and `hyper-describe-variable'."
|
|
30
|
470 ;; #### - perhaps a prefix arg should suppress the prompt...
|
|
108
|
471 (interactive (list (hypropos-read-function-symbol
|
|
|
472 (if (hypropos-follow-ref-buffer current-prefix-arg)
|
|
|
473 "Follow function"
|
|
|
474 "Describe function"))
|
|
|
475 current-prefix-arg))
|
|
70
|
476 (if (null symbol)
|
|
|
477 (message "Sorry, nothing to describe.")
|
|
|
478 (or (memq major-mode '(hyper-apropos-mode hyper-help-mode))
|
|
|
479 (setq hypropos-prev-wconfig (current-window-configuration)))
|
|
108
|
480 (hypropos-get-doc symbol t nil this-ref-buffer)))
|
|
|
481
|
|
|
482 ;;;###autoload
|
|
|
483 (defun hypropos-read-variable-symbol (prompt &optional predicate)
|
|
|
484 "Hypertext drop-in replacement for `describe-variable'.
|
|
|
485 See also `hyper-apropos' and `hyper-describe-function'."
|
|
|
486 ;; #### - perhaps a prefix arg should suppress the prompt...
|
|
|
487 (or predicate (setq predicate 'boundp))
|
|
|
488 (let (v val)
|
|
|
489 (setq v (hypropos-this-symbol)) ; symbol under point
|
|
|
490 (or (funcall predicate v)
|
|
|
491 (setq v (variable-at-point)))
|
|
|
492 (or (funcall predicate v)
|
|
|
493 (setq v nil))
|
|
|
494 (setq val (let ((enable-recursive-minibuffers t))
|
|
|
495 (completing-read
|
|
|
496 (concat prompt
|
|
|
497 (if v
|
|
|
498 (format " (default %s): " v)
|
|
|
499 ": "))
|
|
|
500 obarray predicate t nil 'variable-history)))
|
|
|
501 (if (string= val "")
|
|
|
502 (progn (push (symbol-name v) variable-history) v)
|
|
|
503 (intern-soft val))))
|
|
|
504
|
|
|
505 (defun hypropos-read-function-symbol (prompt)
|
|
|
506 "Read function symbol from minibuffer."
|
|
|
507 (let ((fn (hypropos-this-symbol))
|
|
|
508 val)
|
|
|
509 (or (fboundp fn)
|
|
|
510 (setq fn (function-called-at-point)))
|
|
|
511 (setq val (let ((enable-recursive-minibuffers t))
|
|
|
512 (completing-read (if fn
|
|
|
513 (format "%s (default %s): " prompt fn)
|
|
|
514 (format "%s: " prompt))
|
|
|
515 obarray 'fboundp t nil
|
|
|
516 'function-history)))
|
|
|
517 (if (equal val "")
|
|
|
518 (progn (push (symbol-name fn) function-history) fn)
|
|
|
519 (intern-soft val))))
|
|
0
|
520
|
|
|
521 (defun hypropos-last-help (arg)
|
|
|
522 "Go back to the last symbol documented in the *Hyper Help* buffer."
|
|
|
523 (interactive "P")
|
|
108
|
524 (let ((win (get-buffer-window hypropos-help-buf)))
|
|
|
525 (or arg (setq arg (if win 1 0)))
|
|
|
526 (cond ((= arg 0))
|
|
|
527 ((<= (length hypropos-help-history) arg)
|
|
0
|
528 ;; go back as far as we can...
|
|
|
529 (setcdr (nreverse hypropos-help-history) nil))
|
|
|
530 (t
|
|
108
|
531 (setq hypropos-help-history (nthcdr arg hypropos-help-history))))
|
|
|
532 (if (or win (> arg 0))
|
|
|
533 (hypropos-get-doc (car hypropos-help-history) t)
|
|
|
534 (display-buffer hypropos-help-buf))))
|
|
|
535
|
|
|
536 (defun hypropos-insert-face (string &optional face)
|
|
|
537 "Insert STRING and fontify some parts with face `hyperlink'."
|
|
|
538 (let ((beg (point)) end)
|
|
|
539 (insert-face string (or face 'documentation))
|
|
|
540 (setq end (point))
|
|
|
541 (goto-char beg)
|
|
|
542 (while (re-search-forward
|
|
|
543 "`\\([-a-zA-Z0-9_][-a-zA-Z0-9_][-a-zA-Z0-9_.]+\\)'"
|
|
|
544 end 'limit)
|
|
|
545 (set-extent-face (make-extent (match-beginning 1) (match-end 1))
|
|
|
546 'hyperlink))
|
|
|
547 (goto-char beg)
|
|
|
548 (while (re-search-forward
|
|
|
549 "M-x \\([-a-zA-Z0-9_][-a-zA-Z0-9_][-a-zA-Z0-9_.]+\\)"
|
|
|
550 end 'limit)
|
|
|
551 (set-extent-face (make-extent (match-beginning 1) (match-end 1))
|
|
|
552 'hyperlink))))
|
|
|
553
|
|
|
554 (defun hypropos-insert-keybinding (keys string)
|
|
|
555 (if keys
|
|
|
556 (insert " (" string " bound to \""
|
|
|
557 (mapconcat 'key-description
|
|
|
558 (sort keys #'(lambda (x y)
|
|
|
559 (< (length x) (length y))))
|
|
|
560 "\", \"")
|
|
|
561 "\")\n")))
|
|
0
|
562
|
|
108
|
563 (defun hypropos-insert-section-heading (alias-desc &optional desc)
|
|
|
564 (or desc (setq desc alias-desc
|
|
|
565 alias-desc nil))
|
|
|
566 (if alias-desc
|
|
|
567 (setq desc (concat alias-desc
|
|
|
568 (if (memq (aref desc 0)
|
|
|
569 '(?a ?e ?i ?o ?u))
|
|
|
570 ", an " ", a ")
|
|
|
571 desc)))
|
|
|
572 (aset desc 0 (upcase (aref desc 0))) ; capitalize
|
|
|
573 (goto-char (point-max))
|
|
|
574 (newline 3) (delete-blank-lines) (newline 2)
|
|
|
575 (hypropos-insert-face desc 'section-heading))
|
|
|
576
|
|
|
577 (defun hypropos-insert-value (string symbol val)
|
|
|
578 (insert-face string 'heading)
|
|
|
579 (insert (if (symbol-value symbol)
|
|
|
580 (if (or (null val) (eq val t) (integerp val))
|
|
|
581 (prog1
|
|
|
582 (symbol-value symbol)
|
|
|
583 (set symbol nil))
|
|
|
584 "see below")
|
|
|
585 "is void")))
|
|
|
586
|
|
|
587 (defun hypropos-follow-ref-buffer (this-ref-buffer)
|
|
|
588 (and (not this-ref-buffer)
|
|
|
589 (eq major-mode 'hyper-help-mode)
|
|
|
590 hypropos-ref-buffer
|
|
|
591 (buffer-live-p hypropos-ref-buffer)))
|
|
|
592
|
|
|
593 (defun hypropos-get-alias (symbol alias-p next-symbol &optional use)
|
|
|
594 "Return (TERMINAL-SYMBOL . ALIAS-DESC)."
|
|
|
595 (let (aliases)
|
|
|
596 (while (funcall alias-p symbol)
|
|
|
597 (setq aliases (cons (if use (funcall use symbol) symbol) aliases))
|
|
|
598 (setq symbol (funcall next-symbol symbol)))
|
|
|
599 (cons symbol
|
|
|
600 (and aliases
|
|
|
601 (concat "an alias for `"
|
|
|
602 (mapconcat 'symbol-name
|
|
|
603 (nreverse aliases)
|
|
|
604 "',\nwhich is an alias for `")
|
|
|
605 "'")))))
|
|
|
606
|
|
|
607 ;;;###autoload
|
|
|
608 (defun hypropos-get-doc (&optional symbol force type this-ref-buffer)
|
|
0
|
609 ;; #### - update this docstring
|
|
|
610 "Toggle display of documentation for the symbol on the current line."
|
|
|
611 ;; SYMBOL is the symbol to document. FORCE, if non-nil, means to
|
|
|
612 ;; regenerate the documentation even if it already seems to be there. And
|
|
|
613 ;; TYPE, if present, forces the generation of only variable documentation
|
|
|
614 ;; or only function documentation. Normally, if both are present, then
|
|
|
615 ;; both will be generated.
|
|
|
616 ;;
|
|
|
617 ;; TYPES TO IMPLEMENT: obsolete face
|
|
|
618 ;;
|
|
|
619 (interactive)
|
|
|
620 (or symbol
|
|
|
621 (setq symbol (hypropos-this-symbol)))
|
|
|
622 (or type
|
|
|
623 (setq type '(function variable face)))
|
|
|
624 (if (and (eq hypropos-currently-showing symbol)
|
|
|
625 (get-buffer hypropos-help-buf)
|
|
|
626 (get-buffer-window hypropos-help-buf)
|
|
|
627 (not force))
|
|
|
628 ;; we're already displaying this help, so toggle its display.
|
|
|
629 (delete-windows-on hypropos-help-buf)
|
|
|
630 ;; OK, we've got to refresh and display it...
|
|
|
631 (or (eq symbol (car hypropos-help-history))
|
|
|
632 (setq hypropos-help-history
|
|
|
633 (if (eq major-mode 'hyper-help-mode)
|
|
|
634 ;; if we're following a link in the help buffer, then
|
|
|
635 ;; record that in the help history.
|
|
|
636 (cons symbol hypropos-help-history)
|
|
|
637 ;; otherwise clear the history because it's a new search.
|
|
|
638 (list symbol))))
|
|
|
639 (save-excursion
|
|
108
|
640 (if (hypropos-follow-ref-buffer this-ref-buffer)
|
|
|
641 (set-buffer hypropos-ref-buffer)
|
|
|
642 (setq hypropos-ref-buffer (current-buffer)))
|
|
|
643 (let (standard-output
|
|
|
644 ok beg
|
|
|
645 newsym symtype doc obsolete
|
|
|
646 (local mode-name)
|
|
|
647 global local-str global-str
|
|
|
648 font fore back undl
|
|
|
649 aliases alias-desc desc)
|
|
|
650 (save-excursion
|
|
|
651 (set-buffer (get-buffer-create hypropos-help-buf))
|
|
|
652 ;;(setq standard-output (current-buffer))
|
|
|
653 (setq buffer-read-only nil)
|
|
|
654 (erase-buffer)
|
|
|
655 (insert-face (format "`%s'" symbol) 'major-heading)
|
|
|
656 (insert (format " (buffer: %s, mode: %s)\n"
|
|
|
657 (buffer-name hypropos-ref-buffer)
|
|
|
658 local)))
|
|
|
659 ;; function ----------------------------------------------------------
|
|
0
|
660 (and (memq 'function type)
|
|
|
661 (fboundp symbol)
|
|
108
|
662 (progn
|
|
|
663 (setq ok t)
|
|
|
664 (setq aliases (hypropos-get-alias (symbol-function symbol)
|
|
|
665 'symbolp
|
|
|
666 'symbol-function)
|
|
|
667 newsym (car aliases)
|
|
|
668 alias-desc (cdr aliases))
|
|
|
669 (if (eq 'macro (car-safe newsym))
|
|
|
670 (setq desc "macro"
|
|
|
671 newsym (cdr newsym))
|
|
|
672 (setq desc "function"))
|
|
|
673 (setq symtype (cond ((subrp newsym) 'subr)
|
|
|
674 ((compiled-function-p newsym) 'bytecode)
|
|
|
675 ((eq (car-safe newsym) 'autoload) 'autoload)
|
|
|
676 ((eq (car-safe newsym) 'lambda) 'lambda))
|
|
0
|
677 desc (concat (if (commandp symbol) "interactive ")
|
|
108
|
678 (cdr (assq symtype
|
|
0
|
679 '((subr . "built-in ")
|
|
|
680 (bytecode . "compiled Lisp ")
|
|
|
681 (autoload . "autoloaded Lisp ")
|
|
|
682 (lambda . "Lisp "))))
|
|
108
|
683 desc)
|
|
|
684 local (current-local-map)
|
|
|
685 global (current-global-map)
|
|
|
686 obsolete (get symbol 'byte-obsolete-info)
|
|
0
|
687 doc (or (documentation symbol) "function not documented"))
|
|
108
|
688 (save-excursion
|
|
|
689 (set-buffer hypropos-help-buf)
|
|
|
690 (goto-char (point-max))
|
|
|
691 (setq standard-output (current-buffer))
|
|
|
692 (hypropos-insert-section-heading alias-desc desc)
|
|
|
693 (and (eq symtype 'autoload)
|
|
|
694 (insert (format ", (autoloaded from \"%s\")"
|
|
|
695 (nth 1 newsym))))
|
|
|
696 (insert ":\n")
|
|
|
697 (if local
|
|
|
698 (hypropos-insert-keybinding
|
|
|
699 (where-is-internal symbol (list local) nil nil nil)
|
|
|
700 "locally"))
|
|
|
701 (hypropos-insert-keybinding
|
|
|
702 (where-is-internal symbol (list global) nil nil nil)
|
|
|
703 "globally")
|
|
|
704 (insert "\n")
|
|
|
705 (if obsolete
|
|
|
706 (hypropos-insert-face
|
|
|
707 (format "%s is an obsolete function; %s\n\n" symbol
|
|
|
708 (if (stringp (car obsolete))
|
|
|
709 (car obsolete)
|
|
|
710 (format "use `%s' instead." (car obsolete))))
|
|
|
711 'warning))
|
|
|
712 (setq beg (point))
|
|
|
713 (insert-face "arguments: " 'heading)
|
|
|
714 (cond ((eq symtype 'lambda)
|
|
|
715 (princ (or (nth 1 newsym) "()")))
|
|
|
716 ((eq symtype 'bytecode)
|
|
|
717 (princ (or (aref newsym 0) "()")))
|
|
|
718 ((and (eq symtype 'subr)
|
|
|
719 (string-match
|
|
|
720 "[\n\t ]*\narguments: ?\\((.*)\\)\n?\\'"
|
|
|
721 doc))
|
|
|
722 (insert (substring doc
|
|
|
723 (match-beginning 1)
|
|
|
724 (match-end 1)))
|
|
|
725 (setq doc (substring doc 0 (match-beginning 0))))
|
|
|
726 ((and (eq symtype 'subr)
|
|
|
727 (string-match
|
|
|
728 "[\n\t ]*([^\n\t )]+[\t ]*\\([^\n)]+\\)?)\\(:[\t ]*\\|\n?\\'\\)"
|
|
|
729 doc))
|
|
|
730 (insert "("
|
|
|
731 (if (match-end 1)
|
|
|
732 (substring doc
|
|
|
733 (match-beginning 1)
|
|
|
734 (match-end 1)))
|
|
|
735 ")")
|
|
|
736 (setq doc (substring doc (match-end 0))))
|
|
|
737 (t (princ "[not available]")))
|
|
|
738 (insert "\n\n")
|
|
|
739 (hypropos-insert-face doc)
|
|
|
740 (insert "\n")
|
|
|
741 (indent-rigidly beg (point) 2))))
|
|
|
742 ;; variable ----------------------------------------------------------
|
|
0
|
743 (and (memq 'variable type)
|
|
108
|
744 (or (boundp symbol) (default-boundp symbol))
|
|
0
|
745 (progn
|
|
|
746 (setq ok t)
|
|
108
|
747 (setq aliases (hypropos-get-alias symbol
|
|
|
748 'variable-alias
|
|
|
749 'variable-alias
|
|
|
750 'variable-alias)
|
|
|
751 newsym (car aliases)
|
|
|
752 alias-desc (cdr aliases))
|
|
|
753 (setq symtype (or (local-variable-p newsym (current-buffer))
|
|
|
754 (and (local-variable-p newsym
|
|
|
755 (current-buffer) t)
|
|
|
756 'auto-local))
|
|
|
757 desc (concat (if (user-variable-p newsym)
|
|
|
758 "user variable"
|
|
|
759 "variable")
|
|
|
760 (cond ((eq symtype t) ", buffer-local")
|
|
|
761 ((eq symtype 'auto-local)
|
|
|
762 ", local when set")))
|
|
|
763 local (and (boundp newsym)
|
|
|
764 (symbol-value newsym))
|
|
|
765 local-str (and (boundp newsym)
|
|
|
766 (prin1-to-string local))
|
|
|
767 global (and (eq symtype t)
|
|
|
768 (default-boundp newsym)
|
|
|
769 (default-value newsym))
|
|
|
770 global-str (and (eq symtype t)
|
|
|
771 (default-boundp newsym)
|
|
|
772 (prin1-to-string global))
|
|
|
773 obsolete (get symbol 'byte-obsolete-variable)
|
|
|
774 doc (or (documentation-property symbol
|
|
|
775 'variable-documentation)
|
|
0
|
776 "variable not documented"))
|
|
108
|
777 (save-excursion
|
|
|
778 (set-buffer hypropos-help-buf)
|
|
|
779 (goto-char (point-max))
|
|
|
780 (setq standard-output (current-buffer))
|
|
|
781 (hypropos-insert-section-heading alias-desc desc)
|
|
|
782 (insert ":\n\n")
|
|
|
783 (setq beg (point))
|
|
|
784 (if obsolete
|
|
|
785 (hypropos-insert-face
|
|
|
786 (format "%s is an obsolete function; %s\n\n" symbol
|
|
|
787 (if (stringp obsolete)
|
|
|
788 obsolete
|
|
|
789 (format "use `%s' instead." obsolete)))
|
|
|
790 'warning))
|
|
|
791 ;; generally, the value of the variable is short and the
|
|
|
792 ;; documentation of the variable long, so it's desirable
|
|
|
793 ;; to see all of the value and the start of the
|
|
|
794 ;; documentation. Some variables, though, have huge and
|
|
|
795 ;; nearly meaningless values that force you to page
|
|
|
796 ;; forward just to find the doc string. That is
|
|
|
797 ;; undesirable.
|
|
|
798 (if (and (or (null local-str) (< (length local-str) 69))
|
|
|
799 (or (null global-str) (< (length global-str) 69)))
|
|
|
800 ; 80 cols. docstrings assume this.
|
|
|
801 (progn (insert-face "value: " 'heading)
|
|
|
802 (insert (or local-str "is void"))
|
|
|
803 (if (eq symtype t)
|
|
|
804 (progn
|
|
|
805 (insert "\n")
|
|
|
806 (insert-face "default value: " 'heading)
|
|
|
807 (insert (or global-str "is void"))))
|
|
|
808 (insert "\n\n")
|
|
|
809 (hypropos-insert-face doc))
|
|
|
810 (hypropos-insert-value "value: " 'local-str local)
|
|
|
811 (if (eq symtype t)
|
|
|
812 (progn
|
|
|
813 (insert ", ")
|
|
|
814 (hypropos-insert-value "default-value: "
|
|
|
815 'global-str global)))
|
|
|
816 (insert "\n\n")
|
|
|
817 (hypropos-insert-face doc)
|
|
|
818 (if local-str
|
|
|
819 (progn
|
|
|
820 (newline 3) (delete-blank-lines) (newline 1)
|
|
|
821 (insert-face "value: " 'heading)
|
|
|
822 (if hypropos-prettyprint-long-values
|
|
|
823 (condition-case nil
|
|
|
824 (let ((pp-print-readably nil)) (pprint local))
|
|
|
825 (error (insert local-str)))
|
|
|
826 (insert local-str))))
|
|
|
827 (if global-str
|
|
|
828 (progn
|
|
|
829 (newline 3) (delete-blank-lines) (newline 1)
|
|
|
830 (insert-face "default value: " 'heading)
|
|
|
831 (if hypropos-prettyprint-long-values
|
|
|
832 (condition-case nil
|
|
|
833 (let ((pp-print-readably nil)) (pprint global))
|
|
|
834 (error (insert global-str)))
|
|
|
835 (insert global-str)))))
|
|
|
836 (indent-rigidly beg (point) 2))))
|
|
|
837 ;; face --------------------------------------------------------------
|
|
0
|
838 (and (memq 'face type)
|
|
|
839 (find-face symbol)
|
|
|
840 (progn
|
|
|
841 (setq ok t)
|
|
108
|
842 (copy-face symbol 'hypropos-temp-face 'global)
|
|
|
843 (mapcar (function
|
|
|
844 (lambda (property)
|
|
|
845 (setq symtype (face-property-instance symbol
|
|
|
846 property))
|
|
|
847 (if symtype
|
|
|
848 (set-face-property 'hypropos-temp-face
|
|
|
849 property
|
|
|
850 symtype))))
|
|
|
851 built-in-face-specifiers)
|
|
|
852 (setq font (cons (face-property-instance symbol 'font nil 0 t)
|
|
|
853 (face-property-instance symbol 'font))
|
|
|
854 fore (cons (face-foreground-instance symbol nil 0 t)
|
|
|
855 (face-foreground-instance symbol))
|
|
|
856 back (cons (face-background-instance symbol nil 0 t)
|
|
|
857 (face-background-instance symbol))
|
|
|
858 undl (cons (face-underline-p symbol nil 0 t)
|
|
|
859 (face-underline-p symbol))
|
|
|
860 doc (face-doc-string symbol))
|
|
0
|
861 ;; #### - add some code here
|
|
108
|
862 (save-excursion
|
|
|
863 (set-buffer hypropos-help-buf)
|
|
|
864 (setq standard-output (current-buffer))
|
|
|
865 (hypropos-insert-section-heading "Face:\n\n ")
|
|
|
866 (insert-face "ABCDEFHIJKLMNOPQRSTUVWXYZ abcdefhijklmnopqrstuvwxyz 0123456789"
|
|
|
867 'hypropos-temp-face)
|
|
|
868 (newline 2)
|
|
|
869 (insert-face " Font: " 'heading)
|
|
|
870 (insert (format (if (numberp (car font)) "(%s)\n" "%s\n")
|
|
|
871 (and (cdr font)
|
|
|
872 (font-instance-name (cdr font)))))
|
|
|
873 (insert-face " Foreground: " 'heading)
|
|
|
874 (insert (format (if (numberp (car fore)) "(%s)\n" "%s\n")
|
|
|
875 (and (cdr fore)
|
|
|
876 (color-instance-name (cdr fore)))))
|
|
|
877 (insert-face " Background: " 'heading)
|
|
|
878 (insert (format (if (numberp (car back)) "(%s)\n" "%s\n")
|
|
|
879 (and (cdr back)
|
|
|
880 (color-instance-name (cdr back)))))
|
|
|
881 (insert-face " Underline: " 'heading)
|
|
|
882 (insert (format (if (numberp (car undl)) "(%s)\n" "%s\n")
|
|
|
883 (cdr undl)))
|
|
|
884 (if doc
|
|
|
885 (progn
|
|
|
886 (newline)
|
|
|
887 (setq beg (point))
|
|
|
888 (insert doc)
|
|
|
889 (indent-rigidly beg (point) 2))))))
|
|
|
890 ;; not bound & property list -----------------------------------------
|
|
|
891 (or ok
|
|
|
892 (save-excursion
|
|
|
893 (set-buffer hypropos-help-buf)
|
|
|
894 (hypropos-insert-section-heading
|
|
|
895 "symbol is not currently bound\n")))
|
|
|
896 (if (and (setq symtype (symbol-plist symbol))
|
|
|
897 (or (> (length symtype) 2)
|
|
|
898 (not (memq 'variable-documentation symtype))))
|
|
|
899 (save-excursion
|
|
|
900 (set-buffer hypropos-help-buf)
|
|
|
901 (goto-char (point-max))
|
|
|
902 (setq standard-output (current-buffer))
|
|
|
903 (hypropos-insert-section-heading "property-list:\n\n")
|
|
|
904 (while symtype
|
|
|
905 (if (memq (car symtype)
|
|
|
906 '(variable-documentation byte-obsolete-info))
|
|
|
907 (setq symtype (cdr symtype))
|
|
|
908 (insert-face (concat " " (symbol-name (car symtype))
|
|
|
909 ": ")
|
|
|
910 'heading)
|
|
|
911 (setq symtype (cdr symtype))
|
|
|
912 (indent-to 32)
|
|
|
913 (insert (prin1-to-string (car symtype)) "\n"))
|
|
|
914 (setq symtype (cdr symtype)))))))
|
|
|
915 (save-excursion
|
|
|
916 (set-buffer hypropos-help-buf)
|
|
0
|
917 (goto-char (point-min))
|
|
|
918 ;; pop up window and shrink it if it's wasting space
|
|
108
|
919 (if hypropos-shrink-window
|
|
|
920 (shrink-window-if-larger-than-buffer
|
|
|
921 (display-buffer (current-buffer)))
|
|
|
922 (display-buffer (current-buffer)))
|
|
|
923 (hyper-help-mode))
|
|
|
924 (setq hypropos-currently-showing symbol)))
|
|
0
|
925
|
|
|
926 ; -----------------------------------------------------------------------------
|
|
|
927
|
|
|
928 (defun hyper-help-mode ()
|
|
|
929 "Major mode for hypertext XEmacs help. In this mode, you can quickly
|
|
|
930 follow links between back and forth between the documentation strings for
|
|
|
931 different variables and functions. Common commands:
|
|
|
932
|
|
|
933 \\{hypropos-help-map}"
|
|
|
934 (setq mode-motion-hook 'hypropos-highlight-lisp-symbol
|
|
|
935 buffer-read-only t
|
|
|
936 major-mode 'hyper-help-mode
|
|
|
937 mode-name "Hyper-Help")
|
|
|
938 (set-syntax-table emacs-lisp-mode-syntax-table)
|
|
|
939 (use-local-map hypropos-help-map))
|
|
|
940
|
|
|
941 (defun hypropos-highlight-lisp-symbol (event)
|
|
|
942 ;; mostly copied from mode-motion-highlight-internal
|
|
|
943 (let* ((window (event-window event))
|
|
|
944 (buffer (and window (window-buffer window)))
|
|
|
945 (point (and buffer (event-point event)))
|
|
|
946 st en sym highlight-p)
|
|
|
947 (if buffer
|
|
|
948 (progn
|
|
|
949 (set-buffer buffer)
|
|
|
950 (if point
|
|
|
951 (save-excursion
|
|
|
952 (goto-char point)
|
|
|
953 (setq st (save-excursion
|
|
|
954 (skip-syntax-backward "w_")
|
|
|
955 (skip-chars-forward "`")
|
|
|
956 (point))
|
|
|
957 en (save-excursion
|
|
|
958 (goto-char st)
|
|
|
959 (skip-syntax-forward "w_")
|
|
|
960 (skip-chars-backward ".")
|
|
|
961 (point))
|
|
|
962 sym (and (not (eq st en))
|
|
|
963 (intern-soft (buffer-substring st en)))
|
|
|
964 highlight-p (and sym
|
|
|
965 (or (boundp sym)
|
|
|
966 (fboundp sym))))
|
|
|
967 (if highlight-p
|
|
|
968 (if mode-motion-extent
|
|
|
969 (set-extent-endpoints mode-motion-extent st en)
|
|
|
970 (setq mode-motion-extent (make-extent st en))
|
|
|
971 (set-extent-property mode-motion-extent 'highlight t))
|
|
|
972 (and mode-motion-extent
|
|
|
973 (progn (delete-extent mode-motion-extent)
|
|
|
974 (setq mode-motion-extent nil)))
|
|
|
975 ))
|
|
|
976 ;; not over text; zero the extent.
|
|
|
977 (if (and mode-motion-extent (extent-buffer mode-motion-extent)
|
|
|
978 (not (eq (extent-start-position mode-motion-extent)
|
|
|
979 (extent-end-position mode-motion-extent))))
|
|
|
980 (set-extent-endpoints mode-motion-extent 1 1)))))))
|
|
|
981
|
|
|
982
|
|
|
983 ;; ---------------------------------------------------------------------- ;;
|
|
|
984
|
|
|
985 (defun hypropos-scroll-up ()
|
|
|
986 "Scroll up the \"*Hyper Help*\" buffer if it's visible, or scroll this window up."
|
|
|
987 (interactive)
|
|
|
988 (let ((win (get-buffer-window hypropos-help-buf))
|
|
|
989 (owin (selected-window)))
|
|
|
990 (if win
|
|
|
991 (progn
|
|
|
992 (select-window win)
|
|
|
993 (condition-case nil
|
|
|
994 (scroll-up nil)
|
|
|
995 (error (goto-char (point-max))))
|
|
|
996 (select-window owin))
|
|
|
997 (scroll-up nil))))
|
|
|
998
|
|
|
999 (defun hypropos-scroll-down ()
|
|
|
1000 "Scroll down the \"*Hyper Help*\" buffer if it's visible, or scroll this window down."
|
|
|
1001 (interactive)
|
|
|
1002 (let ((win (get-buffer-window hypropos-help-buf))
|
|
|
1003 (owin (selected-window)))
|
|
|
1004 (if win
|
|
|
1005 (progn
|
|
|
1006 (select-window win)
|
|
|
1007 (condition-case nil
|
|
|
1008 (scroll-down nil)
|
|
|
1009 (error (goto-char (point-max))))
|
|
|
1010 (select-window owin))
|
|
|
1011 (scroll-down nil))))
|
|
|
1012
|
|
|
1013 ;; ---------------------------------------------------------------------- ;;
|
|
|
1014
|
|
|
1015 (defun hypropos-mouse-get-doc (event)
|
|
|
1016 "Get the documentation for the symbol the mouse is on."
|
|
|
1017 (interactive "e")
|
|
|
1018 (mouse-set-point event)
|
|
|
1019 (save-excursion
|
|
|
1020 (let ((symbol (hypropos-this-symbol)))
|
|
|
1021 (if symbol
|
|
|
1022 (hypropos-get-doc symbol)
|
|
|
1023 (error "Click on a symbol")))))
|
|
|
1024
|
|
|
1025 ;; ---------------------------------------------------------------------- ;;
|
|
|
1026
|
|
|
1027 (defun hypropos-add-keyword (pattern)
|
|
|
1028 "Use additional keyword to narrow regexp match.
|
|
|
1029 Deletes lines which don't match PATTERN."
|
|
|
1030 (interactive "sAdditional Keyword: ")
|
|
|
1031 (save-excursion
|
|
|
1032 (goto-char (point-min))
|
|
|
1033 (let (buffer-read-only)
|
|
|
1034 (keep-lines (concat pattern "\\|" hypropos-junk-regexp))
|
|
|
1035 )))
|
|
|
1036
|
|
|
1037 (defun hypropos-eliminate-keyword (pattern)
|
|
|
1038 "Use additional keyword to eliminate uninteresting matches.
|
|
|
1039 Deletes lines which match PATTERN."
|
|
|
1040 (interactive "sKeyword to eliminate: ")
|
|
|
1041 (save-excursion
|
|
|
1042 (goto-char (point-min))
|
|
|
1043 (let (buffer-read-only)
|
|
|
1044 (flush-lines pattern))
|
|
|
1045 ))
|
|
|
1046
|
|
|
1047 ;; ---------------------------------------------------------------------- ;;
|
|
|
1048
|
|
|
1049 (defun hypropos-this-symbol ()
|
|
|
1050 (save-excursion
|
|
|
1051 (cond ((eq major-mode 'hyper-apropos-mode)
|
|
|
1052 (beginning-of-line)
|
|
|
1053 (if (looking-at hypropos-junk-regexp)
|
|
|
1054 nil
|
|
|
1055 (forward-char 3)
|
|
|
1056 (read (point-marker))))
|
|
|
1057 (t
|
|
|
1058 (let* ((st (progn
|
|
|
1059 (skip-syntax-backward "w_")
|
|
|
1060 ;; !@(*$^%%# stupid backquote implementation!!!
|
|
|
1061 (skip-chars-forward "`")
|
|
|
1062 (point)))
|
|
|
1063 (en (progn
|
|
|
1064 (skip-syntax-forward "w_")
|
|
108
|
1065 (skip-chars-backward ".':") ; : for Local Variables
|
|
0
|
1066 (point))))
|
|
|
1067 (and (not (eq st en))
|
|
|
1068 (intern-soft (buffer-substring st en))))))))
|
|
|
1069
|
|
|
1070 (defun hypropos-where-is (symbol)
|
|
|
1071 "Find keybinding for symbol on current line."
|
|
|
1072 (interactive (list (hypropos-this-symbol)))
|
|
|
1073 (where-is symbol))
|
|
|
1074
|
|
|
1075 (defun hypropos-invoke-fn (fn)
|
|
|
1076 "Interactively invoke the function on the current line."
|
|
|
1077 (interactive (list (hypropos-this-symbol)))
|
|
|
1078 (cond ((not (fboundp fn))
|
|
|
1079 (error "%S is not a function" fn))
|
|
|
1080 (t (call-interactively fn))))
|
|
|
1081
|
|
|
1082 ;;;###autoload
|
|
108
|
1083 (defun hyper-set-variable (var val &optional this-ref-buffer)
|
|
|
1084 (interactive
|
|
|
1085 (let ((var (hypropos-read-variable-symbol
|
|
|
1086 (if (hypropos-follow-ref-buffer current-prefix-arg)
|
|
|
1087 "In ref buffer, set user option"
|
|
|
1088 "Set user option")
|
|
|
1089 'user-variable-p)))
|
|
|
1090 (list var (hypropos-read-variable-value var) current-prefix-arg)))
|
|
|
1091 (hypropos-set-variable var val this-ref-buffer))
|
|
|
1092
|
|
|
1093 ;;;###autoload
|
|
|
1094 (defun hypropos-set-variable (var val &optional this-ref-buffer)
|
|
0
|
1095 "Interactively set the variable on the current line."
|
|
|
1096 (interactive
|
|
108
|
1097 (let ((var (hypropos-this-symbol)))
|
|
|
1098 (or (and var (boundp var))
|
|
|
1099 (and (setq var (and (eq major-mode 'hyper-help-mode)
|
|
|
1100 (save-excursion
|
|
|
1101 (goto-char (point-min))
|
|
|
1102 (hypropos-this-symbol))))
|
|
|
1103 (boundp var))
|
|
|
1104 (setq var nil))
|
|
|
1105 (list var (hypropos-read-variable-value var))))
|
|
|
1106 (and var
|
|
|
1107 (boundp var)
|
|
|
1108 (progn
|
|
|
1109 (if (hypropos-follow-ref-buffer this-ref-buffer)
|
|
|
1110 (save-excursion
|
|
|
1111 (set-buffer hypropos-ref-buffer)
|
|
|
1112 (set var val))
|
|
|
1113 (set var val))
|
|
|
1114 (hypropos-get-doc var t '(variable) this-ref-buffer))))
|
|
|
1115
|
|
|
1116 (defun hypropos-read-variable-value (var &optional this-ref-buffer)
|
|
|
1117 (and var
|
|
|
1118 (boundp var)
|
|
|
1119 (let ((prop (get var 'variable-interactive))
|
|
|
1120 (print-readably t)
|
|
|
1121 val str)
|
|
|
1122 (hypropos-get-doc var t '(variable) current-prefix-arg)
|
|
|
1123 (if prop
|
|
|
1124 (call-interactively (list 'lambda '(arg)
|
|
|
1125 (list 'interactive prop)
|
|
|
1126 'arg))
|
|
|
1127 (setq val (if (hypropos-follow-ref-buffer this-ref-buffer)
|
|
|
1128 (save-excursion
|
|
|
1129 (set-buffer hypropos-ref-buffer)
|
|
|
1130 (symbol-value var))
|
|
|
1131 (symbol-value var))
|
|
|
1132 str (prin1-to-string val))
|
|
|
1133 (eval-minibuffer
|
|
|
1134 (format "Set %s `%s' to value (evaluated): "
|
|
|
1135 (if (user-variable-p var) "user option" "Variable")
|
|
|
1136 var)
|
|
|
1137 (condition-case nil
|
|
|
1138 (progn
|
|
|
1139 (read str)
|
|
|
1140 (format (if (or (consp val)
|
|
|
1141 (and (symbolp val)
|
|
|
1142 (not (memq val '(t nil)))))
|
|
|
1143 "'%s" "%s")
|
|
|
1144 str))
|
|
|
1145 (error nil)))))))
|
|
0
|
1146
|
|
|
1147 ;; ---------------------------------------------------------------------- ;;
|
|
|
1148
|
|
|
1149 (defun hypropos-find-tag (&optional tag-name)
|
|
|
1150 "Find the tag for the symbol on the current line in other window. In
|
|
|
1151 order for this to work properly, the variable `tag-table-alist' or
|
|
|
1152 `tags-file-name' must be set so that a TAGS file with tags for the emacs
|
|
|
1153 source is found for the \"*Hyper Apropos*\" buffer."
|
|
|
1154 (interactive)
|
|
|
1155 ;; there ought to be a default tags file for this...
|
|
|
1156 (or tag-name (setq tag-name (symbol-name (hypropos-this-symbol))))
|
|
|
1157 (find-tag-other-window (list tag-name)))
|
|
|
1158
|
|
|
1159 ;; ---------------------------------------------------------------------- ;;
|
|
|
1160
|
|
|
1161 (defun hypropos-disassemble (sym)
|
|
|
1162 "Disassemble FUN if it is byte-coded. If it's a lambda, prettyprint it."
|
|
|
1163 (interactive (list (hypropos-this-symbol)))
|
|
|
1164 (let ((fun sym) (trail nil) macrop)
|
|
|
1165 (while (and (symbolp fun) (not (memq fun trail)))
|
|
|
1166 (setq trail (cons fun trail)
|
|
|
1167 fun (symbol-function fun)))
|
|
|
1168 (and (symbolp fun)
|
|
|
1169 (error "Loop detected in function binding of `%s'" fun))
|
|
|
1170 (setq macrop (and (consp fun)
|
|
|
1171 (eq 'macro (car fun))))
|
|
|
1172 (cond ((compiled-function-p (if macrop (cdr fun) fun))
|
|
|
1173 (disassemble fun)
|
|
|
1174 (set-buffer "*Disassemble*")
|
|
|
1175 (goto-char (point-min))
|
|
|
1176 (forward-sexp 2)
|
|
|
1177 (insert (format " for function `%S'" sym))
|
|
|
1178 )
|
|
|
1179 ((consp fun)
|
|
|
1180 (with-output-to-temp-buffer "*Disassemble*"
|
|
|
1181 (pprint (if macrop
|
|
|
1182 (cons 'defmacro (cons sym (cdr (cdr fun))))
|
|
|
1183 (cons 'defun (cons sym (cdr fun))))))
|
|
|
1184 (set-buffer "*Disassemble*")
|
|
|
1185 (emacs-lisp-mode))
|
|
|
1186 ((or (vectorp fun) (stringp fun))
|
|
|
1187 ;; #### - do something fancy here
|
|
|
1188 (with-output-to-temp-buffer "*Disassemble*"
|
|
|
1189 (princ (format "%s is a keyboard macro:\n\n\t" sym))
|
|
|
1190 (prin1 fun)))
|
|
|
1191 (t
|
|
|
1192 (error "Sorry, cannot disassemble `%s'" sym)))))
|
|
|
1193
|
|
|
1194 ;; ---------------------------------------------------------------------- ;;
|
|
|
1195
|
|
|
1196 (defun hypropos-quit ()
|
|
|
1197 (interactive)
|
|
|
1198 "Quit Hyper Apropos and restore original window config."
|
|
|
1199 (let ((buf (get-buffer hypropos-apropos-buf)))
|
|
|
1200 (and buf (bury-buffer buf)))
|
|
|
1201 (set-window-configuration hypropos-prev-wconfig))
|
|
|
1202
|
|
|
1203 ;; ---------------------------------------------------------------------- ;;
|
|
|
1204
|
|
|
1205 ;;;###autoload
|
|
|
1206 (defun hypropos-popup-menu (event)
|
|
|
1207 (interactive "e")
|
|
|
1208 (mouse-set-point event)
|
|
|
1209 (let* ((sym (hypropos-this-symbol))
|
|
|
1210 (notjunk (not (null sym)))
|
|
|
1211 (command-p (commandp sym))
|
|
|
1212 (variable-p (and sym (boundp sym)))
|
|
|
1213 (function-p (fboundp sym))
|
|
|
1214 (apropos-p (eq 'hyper-apropos-mode
|
|
|
1215 (save-excursion (set-buffer (event-buffer event))
|
|
|
1216 major-mode)))
|
|
|
1217 (name (if sym (symbol-name sym) ""))
|
|
|
1218 (hypropos-menu
|
|
|
1219 (delete
|
|
|
1220 nil
|
|
|
1221 (list (concat "Hyper-Help: " name)
|
|
|
1222 (vector "Display documentation" 'hypropos-get-doc notjunk)
|
|
|
1223 (vector "Set variable" 'hypropos-set-variable variable-p)
|
|
|
1224 (vector "Show keys for" 'hypropos-where-is command-p)
|
|
|
1225 (vector "Invoke command" 'hypropos-invoke-fn command-p)
|
|
|
1226 (vector "Find tag" 'hypropos-find-tag notjunk)
|
|
|
1227 (and apropos-p
|
|
|
1228 ["Add keyword..." hypropos-add-keyword t])
|
|
|
1229 (and apropos-p
|
|
|
1230 ["Eliminate keyword..." hypropos-eliminate-keyword t])
|
|
|
1231 (if apropos-p
|
|
|
1232 ["Programmers' Apropos" hypropos-toggle-programming-flag
|
|
|
1233 :style toggle :selected hypropos-programming-apropos]
|
|
|
1234 ["Programmers' Help" hypropos-toggle-programming-flag
|
|
|
1235 :style toggle :selected hypropos-programming-apropos])
|
|
|
1236 (and hypropos-programming-apropos
|
|
|
1237 (vector "Disassemble function"
|
|
|
1238 'hypropos-disassemble
|
|
|
1239 function-p))
|
|
|
1240 ["Help" describe-mode t]
|
|
|
1241 ["Quit" hypropos-quit t]
|
|
|
1242 ))))
|
|
|
1243 (popup-menu hypropos-menu)))
|
|
|
1244
|
|
|
1245 (provide 'hyper-apropos)
|
|
|
1246
|
|
|
1247 ;; end of hyper-apropos.el
|
