annotate man/custom.texi @ 120:cca96a509cfe r20-1b12

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date Mon, 13 Aug 2007 09:25:29 +0200
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1 \input texinfo.tex
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2
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3 @c %**start of header
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4 @setfilename custom
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5 @settitle The Customization Library
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6 @iftex
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7 @afourpaper
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8 @headings double
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9 @end iftex
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10 @c %**end of header
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11
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12 @node Top, Introduction, (dir), (dir)
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13 @comment node-name, next, previous, up
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14 @top The Customization Library
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15
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16 Version: 1.74
98
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17
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18 @menu
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19 * Introduction::
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20 * User Commands::
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21 * The Customization Buffer::
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22 * Declarations::
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23 * Utilities::
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24 * The Init File::
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25 * Wishlist::
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26 @end menu
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27
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28 @node Introduction, User Commands, Top, Top
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29 @comment node-name, next, previous, up
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30 @section Introduction
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31
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32 This library allows customization of @dfn{user options}. Currently two
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33 types of user options are supported, namely @dfn{variables} and
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34 @dfn{faces}. Each user option can have four different values
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35 simultaneously:
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36 @table @dfn
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37 @item factory setting
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38 The value specified by the programmer.
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39 @item saved value
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40 The value saved by the user as the default for this variable. This
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41 overwrites the factory setting when starting a new emacs.
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42 @item current value
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43 The value used by Emacs. This will not be remembered next time you
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44 run Emacs.
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45 @item widget value
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46 The value entered by the user in a customization buffer, but not yet
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47 applied.
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48 @end table
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49
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50 Variables also have a @dfn{type}, which specifies what kind of values
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51 the variable can hold, and how the value is presented in a customization
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52 buffer. By default a variable can hold any valid expression, but the
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53 programmer can specify a more limited type when declaring the variable.
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54
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55 The user options are organized in a number of @dfn{groups}. Each group
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56 can contain a number user options, as well as other groups. The groups
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57 allows the user to concentrate on a specific part of emacs.
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58
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59 @node User Commands, The Customization Buffer, Introduction, Top
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60 @comment node-name, next, previous, up
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61 @section User Commands
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62
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63 The following commands will create a customization buffer:
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64
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65 @table @code
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66 @item customize
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67 Create a customization buffer containing a specific group, by default
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68 the @code{emacs} group.
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69
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70 @item customize-variable
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71 Create a customization buffer containing a single variable.
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72
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73 @item customize-face
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74 Create a customization buffer containing a single face.
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75
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76 @item customize-apropos
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77 Create a customization buffer containing all variables, faces, and
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78 groups that match a user specified regular expression.
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79 @end table
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80
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81 @node The Customization Buffer, Declarations, User Commands, Top
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82 @comment node-name, next, previous, up
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83 @section The Customization Buffer.
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84
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85 The customization buffer allows the user to make temporary or permanent
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86 changes to how specific aspects of emacs works, by setting and editing
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87 user options.
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88
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89 The customization buffer contains three types of text:
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90
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91 @table @dfn
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92 @item informative text
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93 where the normal editing commands are disabled.
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94
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95 @item editable fields
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96 where you can edit with the usual emacs commands. Editable fields are
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97 usually displayed with a grey background if your terminal supports
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98 colors, or an italic font otherwise.
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99
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100 @item buttons
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101 which can be activated by either pressing the @kbd{@key{ret}} while
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102 point is located on the text, or pushing @kbd{mouse-2} while the mouse
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103 pointer is above the tex. Buttons are usually displayed in a bold
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104 font.
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105 @end table
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106
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107 You can move to the next the next editable field or button by pressing
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108 @kbd{@key{tab}} or the previous with @kbd{M-@key{tab}}. Some buttons
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109 have a small helpful message about their purpose, which will be
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110 displayed when you move to it with the @key{tab} key.
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111
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112 The buffer is divided into three part, an introductory text, a list of
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113 customization options, and a line of customization buttons. Each part
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114 will be described in the following.
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115
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116 @menu
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117 * The Introductory Text::
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118 * The Customization Options::
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119 * The Variable Options::
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120 * The Face Options::
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121 * The Group Options::
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122 * The State Button::
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123 * The Customization Buttons::
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124 @end menu
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125
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126 @node The Introductory Text, The Customization Options, The Customization Buffer, The Customization Buffer
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127 @comment node-name, next, previous, up
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128 @subsection The Introductory Text
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129
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130 The start of the buffer contains a short explanation of what it is, and
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131 how to get help. It will typically look like this:
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132
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133 @example
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134 This is a customization buffer.
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135 Push RET or click mouse-2 on the word _help_ for more information.
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136 @end example
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137
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138 Rather boring. It is mostly just informative text, but the word
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139 @samp{help} is a button that will bring up this document when
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140 activated.
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141
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142 @node The Customization Options, The Variable Options, The Introductory Text, The Customization Buffer
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143 @comment node-name, next, previous, up
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144 @subsection The Customization Options
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145
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146 Each customization option looks similar to the following text:
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147
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148 @example
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149 *** custom-background-mode: default
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150 State: this item is unchanged from its factory setting.
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151 [ ] [?] The brightness of the background.
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152 @end example
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153
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154 The option contains the parts described below.
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155
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156 @table @samp
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157 @item ***
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158 The Level Button. The customization options in the buffer are organized
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159 in a hierarchy, which is indicated by the number of stars in the level
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160 button. The top level options will be shown as @samp{*}. When they are
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161 expanded, the suboptions will be shown as @samp{**}. The example option
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162 is thus a subsuboption.
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163
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164 Activating the level buttons will toggle between hiding and exposing the
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165 content of that option. The content can either be the value of the
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166 option, as in this example, or a list of suboptions.
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167
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168 @item custom-background-mode
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169 This is the tag of the the option. The tag is a name of a variable, a
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170 face, or customization group. Activating the tag has an effect that
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171 depends on the exact type of the option. In this particular case,
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172 activating the tag will bring up a menu that will allow you to choose
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173 from the three possible values of the `custom-background-mode'
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174 variable.
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175
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176 @item default
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177 After the tag, the options value is shown. Depending on its type, you
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178 may be able to edit the value directly. If an option should contain a
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179 file name, it is displayed in an editable field, i.e. you can edit it
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180 using the standard emacs editing commands.
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181
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182 @item State: this item is unchanged from its factory setting.
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183 The state line. This line will explain the state of the option,
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184 e.g. whether it is currently hidden, or whether it has been modified or
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185 not. Activating the button will allow you to change the state, e.g. set
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186 or reset the changes you have made. This is explained in detail in the
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187 following sections.
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188
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189 @item [ ]
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190 The magic button. This is an abbreviated version of the state line.
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191
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192 @item [?]
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193 The documentation button. If the documentation is more than one line,
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194 this button will be present. Activating the button will toggle whether
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195 the complete documentation is shown, or only the first line.
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196
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197 @item The brightness of the background.
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198 This is a documentation string explaining the purpose of this particular
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199 customization option.
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200
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201 @end table
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202
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203 @node The Variable Options, The Face Options, The Customization Options, The Customization Buffer
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204 @comment node-name, next, previous, up
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205 @subsection The Variable Options
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206
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207 The most common customization options are emacs lisp variables. The
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208 actual editing of these variables depend on what type values the
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209 variable is expected to contain. For example, a lisp variable whose
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210 value should be a string will typically be represented with an editable
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211 text field in the buffer, where you can change the string directly. If
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212 the value is a list, each item in the list will be presented in the
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213 buffer buffer on a separate line, with buttons to insert new items in
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214 the list, or delete existing items from the list. You may want to see
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215 @ref{User Interface,,, widget, The Widget Library}, where some examples
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216 of editing are discussed.
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217
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218 You can either choose to edit the value directly, or edit the lisp
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219 value for that variable. The lisp value is a lisp expression that
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220 will be evaluated when you start emacs. The result of the evaluation
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221 will be used as the initial value for that variable. Editing the
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222 lisp value is for experts only, but if the current value of the
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223 variable is of a wrong type (i.e. a symbol where a string is expected),
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224 the `edit lisp' mode will always be selected.
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225
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226 You can see what mode is currently selected by looking at the state
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227 button. If it uses parenthesises (like @samp{( )}) it is in edit lisp
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228 mode, with square brackets (like @samp{[ ]}) it is normal edit mode.
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229 You can switch mode by activating the state button, and select either
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230 @samp{Edit} or @samp{Edit lisp} from the menu.
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231
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232 You can change the state of the variable with the other menu items:
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233
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234 @table @samp
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235 @item Set
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236 When you have made your modifications in the buffer, you need to
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237 activate this item to make the modifications take effect. The
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238 modifications will be forgotten next time you run emacs.
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239
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240 @item Save
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241 Unless you activate this item instead! This will mark the modification
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242 as permanent, i.e. the changes will be remembered in the next emacs
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243 session.
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244
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245 @item Reset
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246 If you have made some modifications and not yet applied them, you can
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247 undo the modification by activating this item.
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248
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249 @item Reset to Saved
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250 Activating this item will reset the value of the variable to the last
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251 value you marked as permanent with `Save'.
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252
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253 @item Reset to Factory Settings
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254 Activating this item will undo all modifications you have made, and
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255 reset the value to the initial value specified by the program itself.
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256 @end table
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257
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258 By default, the value of large or complicated variables are hidden. You
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259 can show the value by clicking on the level button.
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260
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261 @node The Face Options, The Group Options, The Variable Options, The Customization Buffer
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262 @comment node-name, next, previous, up
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263 @subsection The Face Options
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264
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265 A face is an object that controls the appearance of some buffer text.
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266 The face has a number of possible attributes, such as boldness,
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267 foreground color, and more. For each attribute you can specify whether
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268 this attribute is controlled by the face, and if so, what the value is.
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269 For example, if the attribute bold is not controlled by a face, using
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270 that face on some buffer text will not affect its boldness. If the bold
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271 attribute is controlled by the face, it can be turned either on or of.
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272
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273 It is possible to specify that a face should have different attributes
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274 on different device types. For example, a face may make text red on a
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275 color device, and bold on a monochrome device. You do this by
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276 activating `Edit All' in the state menu.
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277
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278 The way this is presented in the customization buffer is to have a list
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279 of display specifications, and for each display specification a list of
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280 face attributes. For each face attribute, there is a checkbox
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281 specifying whether this attribute has effect and what the value is.
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282 Here is an example:
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283
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284 @example
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285 *** custom-invalid-face: (sample)
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286 State: this item is unchanged from its factory setting.
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287 [ ] Face used when the customize item is invalid.
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288 [INS] [DEL] Display: [ ] Type: [ ] X [ ] PM [ ] Win32 [ ] DOS [ ] TTY
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289 [X] Class: [X] Color [ ] Grayscale [ ] Monochrome
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290 [ ] Background: [ ] Light [ ] Dark
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291 Attributes: [ ] Bold: off
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292 [ ] Italic: off
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293 [ ] Underline: off
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294 [X] Foreground: yellow (sample)
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295 [X] Background: red (sample)
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296 [ ] Stipple:
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297 [INS] [DEL] Display: all
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298 Attributes: [X] Bold: on
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299 [X] Italic: on
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300 [X] Underline: on
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301 [ ] Foreground: default (sample)
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302 [ ] Background: default (sample)
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303 [ ] Stipple:
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304 [INS]
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305 @end example
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306
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307 This has two display specifications. The first will match all color
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308 displays, independently on what window system the device belongs to, and
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309 whether background color is dark or light. For devices matching this
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310 specification, @samp{custom-invalid-face} will force text to be
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311 displayed in yellow on red, but leave all other attributes alone.
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312
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313 The second display will simply match everything. Since the list is
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314 prioritised, this means that it will match all non-color displays. For
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315 these, the face will not affect the foreground or background color, but
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316 force the font to be both bold, italic, and underline.
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317
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318 You can add or delete display specifications by activating the
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319 @samp{[INS]} and @samp{[DEL]} buttons, and modify them by clicking on
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320 the check boxes. The first checkbox in each line in the display
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321 specification is special. It specify whether this particular property
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322 will even be relevant. By not checking the box in the first display, we
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323 match all device types, also device types other than those listed.
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324
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325 After modifying the face, you can activate the state button to make the
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326 changes take effect. The menu items in the state button menu is similar
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327 to the state menu items for variables described in the previous section.
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328
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329 @node The Group Options, The State Button, The Face Options, The Customization Buffer
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330 @comment node-name, next, previous, up
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331 @subsection The Group Options
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332
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333 Since Emacs has approximately a zillion configuration options, they have
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334 been organized in groups. Each group can contain other groups, thus
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335 creating a customization hierarchy. The nesting of the customization
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336 within the visible part of this hierarchy is indicated by the number of
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337 stars in the level button.
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338
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339 Since there is really no customization needed for the group itself, the
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340 menu items in the groups state button will affect all modified group
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341 members recursively. Thus, if you activate the @samp{Set} menu item,
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342 all variables and faces that have been modified and belong to that group
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343 will be applied. For those members that themselves are groups, it will
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344 work as if you had activated the @samp{Set} menu item on them as well.
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345
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346 @node The State Button, The Customization Buttons, The Group Options, The Customization Buffer
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347 @comment node-name, next, previous, up
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348 @subsection The State Line and The Magic Button
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349
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350 The state line has two purposes. The first is to hold the state menu,
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351 as described in the previous sections. The second is to indicate the
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352 state of each customization item.
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353
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354 For the magic button, this is done by the character inside the brackets.
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355 The following states have been defined, the first that applies to the
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356 current item will be used:
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357
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358 @table @samp
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359 @item -
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360 The option is currently hidden. For group options that means the
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361 members are not shown, for variables and faces that the value is not
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362 shown. You cannot perform any of the state change operations on a
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363 hidden customization option.
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364
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365 @item *
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366 The value if this option has been modified in the buffer, but not yet
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367 applied.
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368
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369 @item +
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370 The item has has been set by the user.
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371
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372 @item :
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373 The current value of this option is different from the saved value.
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374
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375 @item !
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376 The saved value of this option is different from the factory setting.
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377
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378 @item @@
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379 The factory setting of this option is not known. This occurs when you
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380 try to customize variables or faces that have not been explicitly
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381 declared as customizable.
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382
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383 @item SPC
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384 The factory setting is still in effect.
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385
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386 @end table
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387
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388 For non-hidden group options, the state shown is the most severe state
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389 of its members, where more severe means that it appears earlier in the
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390 list above (except hidden members, which are ignored).
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391
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392 @node The Customization Buttons, , The State Button, The Customization Buffer
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393 @comment node-name, next, previous, up
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394 @subsection The Customization Buttons
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395
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396 The last part of the customization buffer looks like this:
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397
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398 @example
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399 [Set] [Save] [Reset] [Done]
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400 @end example
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401
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402 Activating the @samp{[Set]}, @samp{[Save]}, or @samp{[Reset]}
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403 button will affect all modified customization items that are visible in
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404 the buffer. @samp{[Done]} will bury the buffer.
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405
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406 @node Declarations, Utilities, The Customization Buffer, Top
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407 @comment node-name, next, previous, up
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408 @section Declarations
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409
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410 This section describes how to declare customization groups, variables,
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411 and faces. It doesn't contain any examples, but please look at the file
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412 @file{cus-edit.el} which contains many declarations you can learn from.
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413
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414 @menu
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415 * Declaring Groups::
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416 * Declaring Variables::
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417 * Declaring Faces::
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418 * Usage for Package Authors::
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419 @end menu
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420
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421 All the customization declarations can be changes by keyword arguments.
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422 Groups, variables, and faces all share these common keywords:
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423
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424 @table @code
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425 @item :group
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426 @var{value} should be a customization group.
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427 Add @var{symbol} to that group.
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428 @item :link
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429 @var{value} should be a widget type.
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430 Add @var{value} to the extrenal links for this customization option.
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431 Useful widget types include @code{custom-manual}, @code{info-link}, and
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432 @code{url-link}.
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433 @item :load
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434 Add @var{value} to the files that should be loaded nefore displaying
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435 this customization option. The value should be iether a string, which
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436 should be a string which will be loaded with @code{load-library} unless
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437 present in @code{load-history}, or a symbol which will be loaded with
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438 @code{require}.
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439 @item :tag
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440 @var{Value} should be a short string used for identifying the option in
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441 customization menus and buffers. By default the tag will be
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442 automatically created from the options name.
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443 @end table
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444
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445 @node Declaring Groups, Declaring Variables, Declarations, Declarations
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446 @comment node-name, next, previous, up
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447 @subsection Declaring Groups
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448
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449 Use @code{defgroup} to declare new customization groups.
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450
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451 @defun defgroup symbol members doc [keyword value]...
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452 Declare @var{symbol} as a customization group containing @var{members}.
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453 @var{symbol} does not need to be quoted.
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454
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455 @var{doc} is the group documentation.
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456
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457 @var{members} should be an alist of the form ((@var{name}
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458 @var{widget})...) where @var{name} is a symbol and @var{widget} is a
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459 widget for editing that symbol. Useful widgets are
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460 @code{custom-variable} for editing variables, @code{custom-face} for
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461 editing faces, and @code{custom-group} for editing groups.@refill
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462
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463 Internally, custom uses the symbol property @code{custom-group} to keep
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464 track of the group members, and @code{group-documentation} for the
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465 documentation string.
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466
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467 The following additional @var{keyword}'s are defined:
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468
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469 @table @code
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470 @item :prefix
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471 @var{value} should be a string. If the string is a prefix for the name
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472 of a member of the group, that prefix will be ignored when creating a
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473 tag for that member.
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474 @end table
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475 @end defun
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476
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477 @node Declaring Variables, Declaring Faces, Declaring Groups, Declarations
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478 @comment node-name, next, previous, up
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479 @subsection Declaring Variables
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480
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481 Use @code{defcustom} to declare user editable variables.
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482
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483 @defun defcustom symbol value doc [keyword value]...
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484 Declare @var{symbol} as a customizable variable that defaults to @var{value}.
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485 Neither @var{symbol} nor @var{value} needs to be quoted.
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486 If @var{symbol} is not already bound, initialize it to @var{value}.
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487
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488 @var{doc} is the variable documentation.
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489
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490 The following additional @var{keyword}'s are defined:
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491
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492 @table @code
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493 @item :type
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494 @var{value} should be a widget type.
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495 @item :options
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496 @var{value} should be a list of possible members of the specified type.
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497 For hooks, this is a list of function names.
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498 @end table
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499
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500 @xref{Sexp Types,,,widget,The Widget Library}, for information about
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501 widgets to use together with the @code{:type} keyword.
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502 @end defun
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503
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504 Internally, custom uses the symbol property @code{custom-type} to keep
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505 track of the variables type, @code{factory-value} for the program
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506 specified default value, @code{saved-value} for a value saved by the
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507 user, and @code{variable-documentation} for the documentation string.
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508
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509 Use @code{custom-add-option} to specify that a specific function is
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510 useful as an meber of a hook.
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511
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512 @defun custom-add-option symbol option
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513 To the variable @var{symbol} add @var{option}.
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514
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515 If @var{symbol} is a hook variable, @var{option} should be a hook
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516 member. For other types variables, the effect is undefined."
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517 @end defun
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518
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519 @node Declaring Faces, Usage for Package Authors, Declaring Variables, Declarations
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520 @comment node-name, next, previous, up
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521 @subsection Declaring Faces
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522
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523 Faces are declared with @code{defface}.
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524
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525 @defun defface face spec doc [keyword value]...
0d2f883870bc Import from CVS: tag r20-1b1
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526
0d2f883870bc Import from CVS: tag r20-1b1
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527 Declare @var{face} as a customizable face that defaults to @var{spec}.
0d2f883870bc Import from CVS: tag r20-1b1
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528 @var{face} does not need to be quoted.
0d2f883870bc Import from CVS: tag r20-1b1
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529
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530 If @var{face} has been set with `custom-set-face', set the face attributes
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
531 as specified by that function, otherwise set the face attributes
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
532 according to @var{spec}.
0d2f883870bc Import from CVS: tag r20-1b1
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533
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diff changeset
534 @var{doc} is the face documentation.
0d2f883870bc Import from CVS: tag r20-1b1
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535
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536 @var{spec} should be an alist of the form @samp{((@var{display} @var{atts})...)}.
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
537
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
538 @var{atts} is a list of face attributes and their values. The possible
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
539 attributes are defined in the variable `custom-face-attributes'.
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
540 Alternatively, @var{atts} can be a face in which case the attributes of
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
541 that face is used.
0d2f883870bc Import from CVS: tag r20-1b1
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542
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
543 The @var{atts} of the first entry in @var{spec} where the @var{display}
0d2f883870bc Import from CVS: tag r20-1b1
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544 matches the frame should take effect in that frame. @var{display} can
0d2f883870bc Import from CVS: tag r20-1b1
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545 either be the symbol `t', which will match all frames, or an alist of
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
546 the form @samp{((@var{req} @var{item}...)...)}@refill
0d2f883870bc Import from CVS: tag r20-1b1
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547
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
548 For the @var{display} to match a FRAME, the @var{req} property of the
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
549 frame must match one of the @var{item}. The following @var{req} are
0d2f883870bc Import from CVS: tag r20-1b1
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550 defined:@refill
0d2f883870bc Import from CVS: tag r20-1b1
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551
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552 @table @code
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553 @item type
108
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diff changeset
554 (the value of (window-system))@*
98
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
555 Should be one of @code{x} or @code{tty}.
0d2f883870bc Import from CVS: tag r20-1b1
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556
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557 @item class
108
360340f9fd5f Import from CVS: tag r20-1b6
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diff changeset
558 (the frame's color support)@*
98
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
559 Should be one of @code{color}, @code{grayscale}, or @code{mono}.
0d2f883870bc Import from CVS: tag r20-1b1
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560
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561 @item background
108
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diff changeset
562 (what color is used for the background text)@*
98
0d2f883870bc Import from CVS: tag r20-1b1
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563 Should be one of @code{light} or @code{dark}.
0d2f883870bc Import from CVS: tag r20-1b1
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564 @end table
0d2f883870bc Import from CVS: tag r20-1b1
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565
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566 Internally, custom uses the symbol property @code{factory-face} for the
0d2f883870bc Import from CVS: tag r20-1b1
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567 program specified default face properties, @code{saved-face} for
108
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diff changeset
568 properties saved by the user, and @code{face-doc-string} for the
98
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diff changeset
569 documentation string.@refill
0d2f883870bc Import from CVS: tag r20-1b1
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570
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571 @end defun
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572
102
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diff changeset
573 @node Usage for Package Authors, , Declaring Faces, Declarations
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diff changeset
574 @comment node-name, next, previous, up
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diff changeset
575 @subsection Usage for Package Authors
a145efe76779 Import from CVS: tag r20-1b3
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diff changeset
576
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diff changeset
577 The recommended usage for the author of a typical emacs lisp package is
a145efe76779 Import from CVS: tag r20-1b3
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diff changeset
578 to create one group identifying the package, and make all user options
a145efe76779 Import from CVS: tag r20-1b3
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diff changeset
579 and faces members of that group. If the package has more than around 20
a145efe76779 Import from CVS: tag r20-1b3
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diff changeset
580 such options, they should be divided into a number of subgroups, with
a145efe76779 Import from CVS: tag r20-1b3
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diff changeset
581 each subgroup being member of the top level group.
a145efe76779 Import from CVS: tag r20-1b3
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diff changeset
582
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diff changeset
583 The top level group for the package should itself be member of one or
a145efe76779 Import from CVS: tag r20-1b3
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diff changeset
584 more of the standard customization groups. There exists a group for
a145efe76779 Import from CVS: tag r20-1b3
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diff changeset
585 each @emph{finder} keyword. Press @kbd{C-c p} to see a list of finder
a145efe76779 Import from CVS: tag r20-1b3
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diff changeset
586 keywords, and add you group to each of them, using the @code{:group}
a145efe76779 Import from CVS: tag r20-1b3
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diff changeset
587 keyword.
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diff changeset
588
98
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589 @node Utilities, The Init File, Declarations, Top
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
590 @comment node-name, next, previous, up
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
591 @section Utilities
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
592
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
593 These utilities can come in handy when adding customization support.
0d2f883870bc Import from CVS: tag r20-1b1
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594
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
595 @deffn Widget custom-manual
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
596 Widget type for specifying the info manual entry for a customization
0d2f883870bc Import from CVS: tag r20-1b1
cvs
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diff changeset
597 option. It takes one argument, an info address.
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
598 @end deffn
0d2f883870bc Import from CVS: tag r20-1b1
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599
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
600 @defun custom-add-to-group group member widget
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
601 To existing @var{group} add a new @var{member} of type @var{widget},
0d2f883870bc Import from CVS: tag r20-1b1
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602 If there already is an entry for that member, overwrite it.
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
603 @end defun
0d2f883870bc Import from CVS: tag r20-1b1
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604
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
605 @defun custom-add-link symbol widget
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
606 To the custom option @var{symbol} add the link @var{widget}.
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
607 @end defun
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
608
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
609 @defun custom-add-load symbol load
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
610 To the custom option @var{symbol} add the dependency @var{load}.
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
611 @var{load} should be either a library file name, or a feature name.
0d2f883870bc Import from CVS: tag r20-1b1
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612 @end defun
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
613
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
614 @defun custom-menu-create symbol &optional name
0d2f883870bc Import from CVS: tag r20-1b1
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diff changeset
615 Create menu for customization group @var{symbol}.
0d2f883870bc Import from CVS: tag r20-1b1
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616 If optional @var{name} is given, use that as the name of the menu.
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617 Otherwise make up a name from @var{symbol}.
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618 The menu is in a format applicable to @code{easy-menu-define}.
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619 @end defun
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620
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621 @node The Init File, Wishlist, Utilities, Top
0d2f883870bc Import from CVS: tag r20-1b1
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622 @comment node-name, next, previous, up
0d2f883870bc Import from CVS: tag r20-1b1
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623 @section The Init File
0d2f883870bc Import from CVS: tag r20-1b1
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624
0d2f883870bc Import from CVS: tag r20-1b1
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625 When you save the customizations, call to @code{custom-set-variables},
0d2f883870bc Import from CVS: tag r20-1b1
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626 @code{custom-set-faces} are inserted into the file specified by
0d2f883870bc Import from CVS: tag r20-1b1
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627 @code{custom-file}. By default @code{custom-file} is your @file{.emacs}
116
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628 file. If you use another file, you must explicitly load it yourself.
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diff changeset
629 The two functions will initialize variables and faces as you have
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diff changeset
630 specified.
98
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631
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632 @node Wishlist, , The Init File, Top
0d2f883870bc Import from CVS: tag r20-1b1
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633 @comment node-name, next, previous, up
0d2f883870bc Import from CVS: tag r20-1b1
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634 @section Wishlist
0d2f883870bc Import from CVS: tag r20-1b1
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635
0d2f883870bc Import from CVS: tag r20-1b1
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636 @itemize @bullet
0d2f883870bc Import from CVS: tag r20-1b1
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637 @item
0d2f883870bc Import from CVS: tag r20-1b1
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638 The menu items should be grayed out when the information is
0d2f883870bc Import from CVS: tag r20-1b1
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639 missing. I.e. if a variable doesn't have a factory setting, the user
0d2f883870bc Import from CVS: tag r20-1b1
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640 should not be allowed to select the @samp{Factory} menu item.
0d2f883870bc Import from CVS: tag r20-1b1
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641
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642 @item
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643 Better support for keyboard operations in the customize buffer.
98
0d2f883870bc Import from CVS: tag r20-1b1
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644
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645 @item
0d2f883870bc Import from CVS: tag r20-1b1
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646 Integrate with @file{w3} so you can customization buffers with much
0d2f883870bc Import from CVS: tag r20-1b1
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647 better formatting. I'm thinking about adding a <custom>name</custom>
108
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648 tag. The latest w3 have some support for this, so come up with a
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649 convincing example.
98
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650
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651 @item
0d2f883870bc Import from CVS: tag r20-1b1
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652 Add an `examples' section, with explained examples of custom type
0d2f883870bc Import from CVS: tag r20-1b1
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653 definitions.
0d2f883870bc Import from CVS: tag r20-1b1
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654
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655 @item
110
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656 Support selectable color themes. I.e., change many faces by setting one
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657 variable.
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658
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659 @item
98
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660 Support undo using lmi's @file{gnus-undo.el}.
0d2f883870bc Import from CVS: tag r20-1b1
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661
0d2f883870bc Import from CVS: tag r20-1b1
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662 @item
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663 Make it possible to append to `choice', `radio', and `set' options.
0d2f883870bc Import from CVS: tag r20-1b1
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664
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665 @item
120
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666 Make it possible to customize code, for example to enable or disable a
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667 global minor mode.
cca96a509cfe Import from CVS: tag r20-1b12
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668
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669 @item
98
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670 Ask whether set or modified variables should be saved in
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671 @code{kill-buffer-hook}.
0d2f883870bc Import from CVS: tag r20-1b1
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672
0d2f883870bc Import from CVS: tag r20-1b1
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673 Ditto for @code{kill-emacs-query-functions}.
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674
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675 @item
0d2f883870bc Import from CVS: tag r20-1b1
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676 Command to check if there are any customization options that
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677 does not belong to an existing group.
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678
0d2f883870bc Import from CVS: tag r20-1b1
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679 @item
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680 Optionally disable the point-cursor and instead highlight the selected
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681 item in XEmacs. This is like the *Completions* buffer in XEmacs.
0d2f883870bc Import from CVS: tag r20-1b1
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682 Suggested by Jens Lautenbacher
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683 @samp{<jens@@lemming0.lem.uni-karlsruhe.de>}.@refill
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684
120
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685 @item
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686 Empty customization groups should start open (harder than it looks).
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687
98
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688 @end itemize
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689
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690 @contents
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691 @bye