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1 @c -*-texinfo-*-
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2 @c This is part of the XEmacs Lisp Reference Manual.
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3 @c Copyright (C) 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
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4 @c See the file lispref.texi for copying conditions.
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5 @setfilename ../../info/errors.info
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6 @node Standard Errors, Standard Buffer-Local Variables, Building XEmacs and Object Allocation, Top
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7 @appendix Standard Errors
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8
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9 Here is the complete list of the error symbols in standard Emacs,
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10 grouped by concept. The list includes each symbol's message (on the
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11 @code{error-message} property of the symbol) and a cross reference to a
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12 description of how the error can occur.
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13
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14 Each error symbol has an @code{error-conditions} property that is a
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15 list of symbols. Normally this list includes the error symbol itself
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16 and the symbol @code{error}. Occasionally it includes additional
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17 symbols, which are intermediate classifications, narrower than
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18 @code{error} but broader than a single error symbol. For example, all
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19 the errors in accessing files have the condition @code{file-error}.
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20
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21 As a special exception, the error symbol @code{quit} does not have the
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22 condition @code{error}, because quitting is not considered an error.
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23
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24 @xref{Errors}, for an explanation of how errors are generated and
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25 handled.
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26
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27 @table @code
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28 @item @var{symbol}
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29 @var{string}; @var{reference}.
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30
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31 @item error
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32 @code{"error"}@*
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33 @xref{Errors}.
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34
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35 @item quit
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36 @code{"Quit"}@*
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37 @xref{Quitting}.
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38
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39 @item args-out-of-range
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40 @code{"Args out of range"}@*
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41 @xref{Sequences Arrays Vectors}.
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42
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43 @item arith-error
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44 @code{"Arithmetic error"}@*
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45 See @code{/} and @code{%} in @ref{Numbers}.
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46
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47 @item beginning-of-buffer
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48 @code{"Beginning of buffer"}@*
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49 @xref{Motion}.
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50
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51 @item buffer-read-only
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52 @code{"Buffer is read-only"}@*
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53 @xref{Read Only Buffers}.
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54
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55 @item cyclic-function-indirection
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56 @code{"Symbol's chain of function indirections contains a loop"}@*
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57 @xref{Function Indirection}.
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58
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59 @c XEmacs feature
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60 @item domain-error
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61 @code{"Arithmetic domain error"}@*
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62
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63 @item end-of-buffer
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64 @code{"End of buffer"}@*
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65 @xref{Motion}.
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66
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67 @item end-of-file
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68 @code{"End of file during parsing"}@*
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69 This is not a @code{file-error}.@*
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70 @xref{Input Functions}.
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71
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72 @item file-error
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73 This error and its subcategories do not have error-strings, because the
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74 error message is constructed from the data items alone when the error
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75 condition @code{file-error} is present.@*
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76 @xref{Files}.
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77
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78 @item file-locked
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79 This is a @code{file-error}.@*
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80 @xref{File Locks}.
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81
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82 @item file-already-exists
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83 This is a @code{file-error}.@*
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84 @xref{Writing to Files}.
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85
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86 @item file-supersession
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87 This is a @code{file-error}.@*
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88 @xref{Modification Time}.
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89
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90 @item invalid-function
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91 @code{"Invalid function"}@*
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92 @xref{Classifying Lists}.
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93
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94 @item invalid-read-syntax
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95 @code{"Invalid read syntax"}@*
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96 @xref{Input Functions}.
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97
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98 @item invalid-regexp
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99 @code{"Invalid regexp"}@*
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100 @xref{Regular Expressions}.
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101
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102 @c XEmacs feature
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103 @item mark-inactive
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104 @code{"The mark is not active now"}@*
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105
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106 @item no-catch
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107 @code{"No catch for tag"}@*
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108 @xref{Catch and Throw}.
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109
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110 @c XEmacs feature
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111 @item overflow-error
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112 @code{"Arithmetic overflow error"}@*
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113
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114 @c XEmacs feature
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115 @item protected-field
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116 @code{"Attempt to modify a protected field"}@*
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117
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118 @c XEmacs feature
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119 @item range-error
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120 @code{"Arithmetic range error"}@*
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121
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122 @item search-failed
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123 @code{"Search failed"}@*
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124 @xref{Searching and Matching}.
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125
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126 @item setting-constant
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127 @code{"Attempt to set a constant symbol"}@*
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128 @xref{Constant Variables, , Variables that Never Change}.
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129
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130 @c XEmacs feature
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131 @item singularity-error
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132 @code{"Arithmetic singularity error"}@*
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133
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134 @c XEmacs feature
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135 @item tooltalk-error
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136 @code{"ToolTalk error"}@*
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137 @xref{ToolTalk Support}.
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138
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139 @c XEmacs feature
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140 @item undefined-keystroke-sequence
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141 @code{"Undefined keystroke sequence"}@*
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142
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143 @ignore FSF Emacs only
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144 @item undefined-color
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145 @code{"Undefined color"}@*
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146 @xref{Color Names}.
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147 @end ignore
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148
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149 @item void-function
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150 @code{"Symbol's function definition is void"}@*
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151 @xref{Function Cells}.
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152
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153 @item void-variable
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154 @code{"Symbol's value as variable is void"}@*
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155 @xref{Accessing Variables}.
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156
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157 @item wrong-number-of-arguments
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158 @code{"Wrong number of arguments"}@*
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159 @xref{Classifying Lists}.
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160
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161 @item wrong-type-argument
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162 @code{"Wrong type argument"}@*
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163 @xref{Type Predicates}.
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164 @end table
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165
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166 These error types, which are all classified as special cases of
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167 @code{arith-error}, can occur on certain systems for invalid use of
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168 mathematical functions.
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169
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170 @table @code
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171 @item domain-error
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172 @code{"Arithmetic domain error"}@*
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173 @xref{Math Functions}.
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174
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175 @item overflow-error
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176 @code{"Arithmetic overflow error"}@*
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177 @xref{Math Functions}.
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178
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179 @item range-error
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180 @code{"Arithmetic range error"}@*
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181 @xref{Math Functions}.
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182
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183 @item singularity-error
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184 @code{"Arithmetic singularity error"}@*
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185 @xref{Math Functions}.
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186
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187 @item underflow-error
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188 @code{"Arithmetic underflow error"}@*
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189 @xref{Math Functions}.
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190 @end table
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