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98
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1 ;;; custom.el -- Tools for declaring and initializing options.
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2 ;;
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3 ;; Copyright (C) 1996, 1997 Free Software Foundation, Inc.
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4 ;;
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5 ;; Author: Per Abrahamsen <abraham@dina.kvl.dk>
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6 ;; Keywords: help, faces
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102
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7 ;; Version: 1.46
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98
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8 ;; X-URL: http://www.dina.kvl.dk/~abraham/custom/
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9
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10 ;;; Commentary:
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11 ;;
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12 ;; If you want to use this code, please visit the URL above.
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13 ;;
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14 ;; This file only contain the code needed to declare and initialize
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15 ;; user options. The code to customize options is autoloaded from
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16 ;; `custom-edit.el'.
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17
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18 ;;; Code:
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19
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20 (require 'widget)
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21
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22 (define-widget-keywords :prefix :tag :load :link :options :type :group)
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23
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24 ;; These autoloads should be deleted when the file is added to Emacs
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25
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26 (unless (fboundp 'load-gc)
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27 (autoload 'customize "custom-edit" nil t)
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28 (autoload 'customize-variable "custom-edit" nil t)
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29 (autoload 'customize-face "custom-edit" nil t)
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30 (autoload 'customize-apropos "custom-edit" nil t)
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31 (autoload 'customize-customized "custom-edit" nil t)
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32 (autoload 'custom-buffer-create "custom-edit")
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33 (autoload 'custom-menu-update "custom-edit")
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34 (autoload 'custom-make-dependencies "custom-edit"))
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35
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36 ;;; Compatibility.
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37
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38 (unless (fboundp 'frame-property)
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39 ;; XEmacs function missing in Emacs 19.34.
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40 (defun frame-property (frame property &optional default)
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41 "Return FRAME's value for property PROPERTY."
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42 (or (cdr (assq property (frame-parameters frame)))
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43 default)))
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44
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45 (defun custom-background-mode ()
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100
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46 "Kludge to detect background mode."
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98
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47 (let* ((bg-resource
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48 (condition-case ()
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49 (x-get-resource ".backgroundMode" "BackgroundMode" 'string)
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50 (error nil)))
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51 color
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52 (mode (cond (bg-resource
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53 (intern (downcase bg-resource)))
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54 ((and (setq color (condition-case ()
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55 (or (frame-property
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56 (selected-frame)
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57 'background-color)
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58 (color-instance-name
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59 (specifier-instance
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60 (face-background 'default))))
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61 (error nil)))
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62 (< (apply '+ (x-color-values color))
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63 (/ (apply '+ (x-color-values "white"))
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64 3)))
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65 'dark)
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66 (t 'light))))
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67 (modify-frame-parameters (selected-frame)
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68 (list (cons 'background-mode mode)))
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69 mode))
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70
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71 ;; XEmacs and Emacs have different definitions of `facep'.
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72 ;; The Emacs definition is the useful one, so emulate that.
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100
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73 (if (fboundp 'facep)
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74 (defalias 'custom-facep 'facep)
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75 (defun custom-facep (face)
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76 "No faces"
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77 nil))
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98
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78
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79 ;;; The `defcustom' Macro.
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80
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81 (defun custom-declare-variable (symbol value doc &rest args)
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100
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82 "Like `defcustom', but SYMBOL and VALUE are evaluated as normal arguments."
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98
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83 (unless (and (default-boundp symbol)
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84 (not (get symbol 'saved-value)))
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85 (set-default symbol (if (get symbol 'saved-value)
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86 (eval (car (get symbol 'saved-value)))
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87 (eval value))))
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88 (put symbol 'factory-value (list value))
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89 (when doc
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90 (put symbol 'variable-documentation doc))
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91 (while args
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92 (let ((arg (car args)))
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93 (setq args (cdr args))
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94 (unless (symbolp arg)
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95 (error "Junk in args %S" args))
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96 (let ((keyword arg)
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97 (value (car args)))
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98 (unless args
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99 (error "Keyword %s is missing an argument" keyword))
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100 (setq args (cdr args))
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101 (cond ((eq keyword :type)
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102 (put symbol 'custom-type value))
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103 ((eq keyword :options)
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104 (if (get symbol 'custom-options)
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105 ;; Slow safe code to avoid duplicates.
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106 (mapcar (lambda (option)
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107 (custom-add-option symbol option))
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108 value)
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109 ;; Fast code for the common case.
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110 (put symbol 'custom-options (copy-list value))))
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111 (t
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112 (custom-handle-keyword symbol keyword value
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113 'custom-variable))))))
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114 (run-hooks 'custom-define-hook)
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115 symbol)
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116
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117 (defmacro defcustom (symbol value doc &rest args)
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118 "Declare SYMBOL as a customizable variable that defaults to VALUE.
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119 DOC is the variable documentation.
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120
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121 Neither SYMBOL nor VALUE needs to be quoted.
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122 If SYMBOL is not already bound, initialize it to VALUE.
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123 The remaining arguments should have the form
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124
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125 [KEYWORD VALUE]...
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126
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127 The following KEYWORD's are defined:
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128
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129 :type VALUE should be a widget type.
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130 :options VALUE should be a list of valid members of the widget type.
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131 :group VALUE should be a customization group.
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132 Add SYMBOL to that group.
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133
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134 Read the section about customization in the emacs lisp manual for more
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135 information."
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136 `(eval-and-compile
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137 (custom-declare-variable (quote ,symbol) (quote ,value) ,doc ,@args)))
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138
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139 ;;; The `defface' Macro.
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140
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100
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141
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142 ;(defun get-face-documentation (face)
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143 ; "Get the documentation string for FACE."
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144 ; (get face 'face-documentation))
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145
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146 ;(defun set-face-documentation (face string)
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147 ; "Set the documentation string for FACE to STRING."
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148 ; (put face 'face-documentation string))
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149
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98
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150 (defun custom-declare-face (face spec doc &rest args)
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151 "Like `defface', but FACE is evaluated as a normal argument."
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152 (put face 'factory-face spec)
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153 (when (fboundp 'facep)
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154 (unless (and (custom-facep face)
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155 (not (get face 'saved-face)))
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156 ;; If the user has already created the face, respect that.
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157 (let ((value (or (get face 'saved-face) spec)))
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158 (custom-face-display-set face value))))
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100
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159 (when (and doc (null (get-face-documentation face)))
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160 (set-face-documentation face doc))
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98
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161 (custom-handle-all-keywords face args 'custom-face)
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162 (run-hooks 'custom-define-hook)
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163 face)
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164
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165 (defmacro defface (face spec doc &rest args)
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166 "Declare FACE as a customizable face that defaults to SPEC.
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167 FACE does not need to be quoted.
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168
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169 Third argument DOC is the face documentation.
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170
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171 If FACE has been set with `custom-set-face', set the face attributes
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172 as specified by that function, otherwise set the face attributes
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173 according to SPEC.
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174
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175 The remaining arguments should have the form
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176
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177 [KEYWORD VALUE]...
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178
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179 The following KEYWORD's are defined:
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180
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181 :group VALUE should be a customization group.
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182 Add FACE to that group.
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183
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184 SPEC should be an alist of the form ((DISPLAY ATTS)...).
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185
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186 ATTS is a list of face attributes and their values. The possible
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187 attributes are defined in the variable `custom-face-attributes'.
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188 Alternatively, ATTS can be a face in which case the attributes of that
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189 face is used.
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190
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191 The ATTS of the first entry in SPEC where the DISPLAY matches the
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192 frame should take effect in that frame. DISPLAY can either be the
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193 symbol `t', which will match all frames, or an alist of the form
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194 \((REQ ITEM...)...)
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195
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196 For the DISPLAY to match a FRAME, the REQ property of the frame must
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197 match one of the ITEM. The following REQ are defined:
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198
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199 `type' (the value of (window-system))
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200 Should be one of `x' or `tty'.
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201
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202 `class' (the frame's color support)
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203 Should be one of `color', `grayscale', or `mono'.
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204
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205 `background' (what color is used for the background text)
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206 Should be one of `light' or `dark'.
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207
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208 Read the section about customization in the emacs lisp manual for more
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209 information."
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210 `(custom-declare-face (quote ,face) ,spec ,doc ,@args))
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211
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212 ;;; The `defgroup' Macro.
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213
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214 (defun custom-declare-group (symbol members doc &rest args)
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215 "Like `defgroup', but SYMBOL is evaluated as a normal argument."
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216 (put symbol 'custom-group (nconc members (get symbol 'custom-group)))
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217 (when doc
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218 (put symbol 'group-documentation doc))
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219 (while args
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220 (let ((arg (car args)))
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221 (setq args (cdr args))
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222 (unless (symbolp arg)
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223 (error "Junk in args %S" args))
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224 (let ((keyword arg)
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225 (value (car args)))
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226 (unless args
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227 (error "Keyword %s is missing an argument" keyword))
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228 (setq args (cdr args))
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229 (cond ((eq keyword :prefix)
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230 (put symbol 'custom-prefix value))
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231 (t
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232 (custom-handle-keyword symbol keyword value
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233 'custom-group))))))
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234 (run-hooks 'custom-define-hook)
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235 symbol)
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236
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237 (defmacro defgroup (symbol members doc &rest args)
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238 "Declare SYMBOL as a customization group containing MEMBERS.
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239 SYMBOL does not need to be quoted.
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240
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241 Third arg DOC is the group documentation.
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242
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243 MEMBERS should be an alist of the form ((NAME WIDGET)...) where
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244 NAME is a symbol and WIDGET is a widget is a widget for editing that
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245 symbol. Useful widgets are `custom-variable' for editing variables,
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246 `custom-face' for edit faces, and `custom-group' for editing groups.
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247
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248 The remaining arguments should have the form
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249
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250 [KEYWORD VALUE]...
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251
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252 The following KEYWORD's are defined:
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253
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254 :group VALUE should be a customization group.
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255 Add SYMBOL to that group.
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256
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257 Read the section about customization in the emacs lisp manual for more
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258 information."
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259 `(custom-declare-group (quote ,symbol) ,members ,doc ,@args))
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260
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261 (defun custom-add-to-group (group option widget)
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262 "To existing GROUP add a new OPTION of type WIDGET,
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263 If there already is an entry for that option, overwrite it."
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264 (let* ((members (get group 'custom-group))
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265 (old (assq option members)))
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266 (if old
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267 (setcar (cdr old) widget)
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268 (put group 'custom-group (nconc members (list (list option widget)))))))
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269
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270 ;;; Properties.
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271
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272 (defun custom-handle-all-keywords (symbol args type)
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273 "For customization option SYMBOL, handle keyword arguments ARGS.
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274 Third argument TYPE is the custom option type."
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275 (while args
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276 (let ((arg (car args)))
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277 (setq args (cdr args))
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278 (unless (symbolp arg)
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279 (error "Junk in args %S" args))
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280 (let ((keyword arg)
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281 (value (car args)))
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282 (unless args
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283 (error "Keyword %s is missing an argument" keyword))
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284 (setq args (cdr args))
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285 (custom-handle-keyword symbol keyword value type)))))
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286
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287 (defun custom-handle-keyword (symbol keyword value type)
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288 "For customization option SYMBOL, handle KEYWORD with VALUE.
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289 Fourth argument TYPE is the custom option type."
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290 (cond ((eq keyword :group)
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291 (custom-add-to-group value symbol type))
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292 ((eq keyword :link)
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293 (custom-add-link symbol value))
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294 ((eq keyword :load)
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295 (custom-add-load symbol value))
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296 ((eq keyword :tag)
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297 (put symbol 'custom-tag value))
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298 (t
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299 (error "Unknown keyword %s" symbol))))
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300
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301 (defun custom-add-option (symbol option)
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302 "To the variable SYMBOL add OPTION.
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303
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304 If SYMBOL is a hook variable, OPTION should be a hook member.
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305 For other types variables, the effect is undefined."
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306 (let ((options (get symbol 'custom-options)))
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307 (unless (member option options)
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308 (put symbol 'custom-options (cons option options)))))
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309
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310 (defun custom-add-link (symbol widget)
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311 "To the custom option SYMBOL add the link WIDGET."
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312 (let ((links (get symbol 'custom-links)))
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313 (unless (member widget links)
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314 (put symbol 'custom-links (cons widget links)))))
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315
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316 (defun custom-add-load (symbol load)
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317 "To the custom option SYMBOL add the dependency LOAD.
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318 LOAD should be either a library file name, or a feature name."
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319 (let ((loads (get symbol 'custom-loads)))
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320 (unless (member load loads)
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321 (put symbol 'custom-loads (cons load loads)))))
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322
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323 ;;; Face Utilities.
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324
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325 (and (fboundp 'make-face)
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326 (make-face 'custom-face-empty))
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327
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328 (defun custom-face-display-set (face spec &optional frame)
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329 "Set FACE to the attributes to the first matching entry in SPEC.
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330 Iff optional FRAME is non-nil, set it for that frame only.
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331 See `defface' for information about SPEC."
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332 (when (fboundp 'copy-face)
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100
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333 (copy-face 'custom-face-empty face frame)
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98
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334 (while spec
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335 (let* ((entry (car spec))
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336 (display (nth 0 entry))
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337 (atts (nth 1 entry)))
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338 (setq spec (cdr spec))
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339 (when (custom-display-match-frame display frame)
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340 (apply 'custom-face-attribites-set face frame atts)
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341 (setq spec nil))))))
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342
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343 (defcustom custom-background-mode nil
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344 "The brightness of the background.
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345 Set this to the symbol dark if your background color is dark, light if
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346 your background is light, or nil (default) if you want Emacs to
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347 examine the brightness for you."
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348 :group 'customize
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349 :type '(choice (choice-item dark)
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350 (choice-item light)
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351 (choice-item :tag "default" nil)))
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352
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353 (defun custom-display-match-frame (display frame)
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354 "Non-nil iff DISPLAY matches FRAME.
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355 If FRAME is nil, the current FRAME is used."
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356 ;; This is a kludge to get started, we really should use specifiers!
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357 (unless frame
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358 (setq frame (selected-frame)))
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359 (if (eq display t)
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360 t
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361 (let ((match t))
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362 (while (and display match)
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363 (let* ((entry (car display))
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364 (req (car entry))
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365 (options (cdr entry)))
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366 (setq display (cdr display))
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367 (cond ((eq req 'type)
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368 (let ((type (if (fboundp 'device-type)
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369 (device-type (frame-device frame))
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370 window-system)))
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371 (setq match (memq type options))))
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372 ((eq req 'class)
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373 (let ((class (if (fboundp 'device-class)
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374 (device-class (frame-device frame))
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375 (frame-property frame 'display-type))))
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376 (setq match (memq class options))))
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377 ((eq req 'background)
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378 (let ((background (or custom-background-mode
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379 (frame-property frame 'background-mode)
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380 (custom-background-mode))))
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381 (setq match (memq background options))))
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382 (t
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383 (error "Unknown req `%S' with options `%S'" req options)))))
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384 match)))
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385
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386 (defconst custom-face-attributes
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387 '((:bold (toggle :format "Bold: %[%v%]\n") custom-set-face-bold)
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388 (:italic (toggle :format "Italic: %[%v%]\n") custom-set-face-italic)
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389 (:underline
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390 (toggle :format "Underline: %[%v%]\n") set-face-underline-p)
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391 (:foreground (color :tag "Foreground") set-face-foreground)
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392 (:background (color :tag "Background") set-face-background)
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393 (:stipple (editable-field :format "Stipple: %v") set-face-stipple))
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394 "Alist of face attributes.
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395
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396 The elements are of the form (KEY TYPE SET) where KEY is a symbol
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397 identifying the attribute, TYPE is a widget type for editing the
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398 attibute, SET is a function for setting the attribute value.
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399
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400 The SET function should take three arguments, the face to modify, the
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401 value of the attribute, and optionally the frame where the face should
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402 be changed.")
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403
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404 (defun custom-face-attribites-set (face frame &rest atts)
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405 "For FACE on FRAME set the attributes [KEYWORD VALUE]....
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406 Each keyword should be listed in `custom-face-attributes'.
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407
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408 If FRAME is nil, set the default face."
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409 (while atts
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410 (let* ((name (nth 0 atts))
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411 (value (nth 1 atts))
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412 (fun (nth 2 (assq name custom-face-attributes))))
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413 (setq atts (cdr (cdr atts)))
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414 (condition-case nil
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100
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415 (funcall fun face value frame)
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98
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416 (error nil)))))
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417
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418 (defun custom-set-face-bold (face value &optional frame)
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419 "Set the bold property of FACE to VALUE."
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420 (if value
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421 (make-face-bold face frame)
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422 (make-face-unbold face frame)))
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423
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424 (defun custom-set-face-italic (face value &optional frame)
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425 "Set the italic property of FACE to VALUE."
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426 (if value
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427 (make-face-italic face frame)
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428 (make-face-unitalic face frame)))
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429
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430 (defun custom-initialize-faces (&optional frame)
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431 "Initialize all custom faces for FRAME.
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432 If FRAME is nil or omitted, initialize them for all frames."
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433 (mapatoms (lambda (symbol)
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434 (let ((spec (or (get symbol 'saved-face)
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435 (get symbol 'factory-face))))
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436 (when spec
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437 (custom-face-display-set symbol spec frame))))))
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438
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439 ;;; Initializing.
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440
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441 (defun custom-set-variables (&rest args)
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442 "Initialize variables according to user preferences.
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443
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444 The arguments should be a list where each entry has the form:
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445
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446 (SYMBOL VALUE [NOW])
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447
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448 The unevaluated VALUE is stored as the saved value for SYMBOL.
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449 If NOW is present and non-nil, VALUE is also evaluated and bound as
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450 the default value for the SYMBOL."
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451 (while args
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452 (let ((entry (car args)))
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453 (if (listp entry)
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454 (let ((symbol (nth 0 entry))
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455 (value (nth 1 entry))
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456 (now (nth 2 entry)))
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457 (put symbol 'saved-value (list value))
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458 (when now
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459 (put symbol 'force-value t)
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460 (set-default symbol (eval value)))
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461 (setq args (cdr args)))
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462 ;; Old format, a plist of SYMBOL VALUE pairs.
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463 (let ((symbol (nth 0 args))
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464 (value (nth 1 args)))
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465 (put symbol 'saved-value (list value)))
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466 (setq args (cdr (cdr args)))))))
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467
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468 (defun custom-set-faces (&rest args)
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469 "Initialize faces according to user preferences.
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470 The arguments should be a list where each entry has the form:
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471
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472 (FACE SPEC [NOW])
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473
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474 SPEC will be stored as the saved value for FACE. If NOW is present
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475 and non-nil, FACE will also be created according to SPEC.
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476
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477 See `defface' for the format of SPEC."
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478 (while args
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479 (let ((entry (car args)))
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480 (if (listp entry)
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481 (let ((face (nth 0 entry))
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482 (spec (nth 1 entry))
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483 (now (nth 2 entry)))
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484 (put face 'saved-face spec)
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485 (when now
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486 (put face 'force-face t)
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487 (custom-face-display-set face spec))
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488 (setq args (cdr args)))
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489 ;; Old format, a plist of FACE SPEC pairs.
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490 (let ((face (nth 0 args))
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491 (spec (nth 1 args)))
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492 (put face 'saved-face spec))
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493 (setq args (cdr (cdr args)))))))
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494
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495 ;;; Meta Customization
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496
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497 (defcustom custom-define-hook nil
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498 "Hook called after defining each customize option."
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499 :group 'customize
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500 :type 'hook)
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501
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502 ;;; Menu support
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503
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504 (defconst custom-help-menu '("Customize"
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505 ["Update menu..." custom-menu-update t]
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506 ["Group..." customize t]
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507 ["Variable..." customize-variable t]
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508 ["Face..." customize-face t]
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509 ["Saved..." customize-customized t]
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510 ["Apropos..." customize-apropos t])
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511 "Customize menu")
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512
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100
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513 ;(defun custom-menu-reset ()
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514 ; "Reset customize menu."
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515 ; (remove-hook 'custom-define-hook 'custom-menu-reset)
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516 ; (define-key global-map [menu-bar help-menu customize-menu]
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517 ; (cons (car custom-help-menu)
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518 ; (easy-menu-create-keymaps (car custom-help-menu)
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519 ; (cdr custom-help-menu)))))
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98
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520
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521 ;;; The End.
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522
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523 (provide 'custom)
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524
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100
|
525 (when (and (not (fboundp 'load-gc))
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526 (string-match "XEmacs" emacs-version))
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527 ;; Overwrite definitions for XEmacs.
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528 (load-library "custom-xmas"))
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529
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530 (unless (fboundp 'load-gc)
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531 (custom-menu-reset))
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532
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98
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533 ;; custom.el ends here
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