Mercurial > hg > octave-lyh
annotate scripts/miscellaneous/warning_ids.m @ 14138:72c96de7a403 stable
maint: update copyright notices for 2012
author | John W. Eaton <jwe@octave.org> |
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date | Mon, 02 Jan 2012 14:25:41 -0500 |
parents | 0a051c406242 |
children | 4d917a6a858b |
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1 ## Copyright (C) 2006-2012 John W. Eaton |
7016 | 2 ## |
3 ## This file is part of Octave. | |
4 ## | |
5 ## Octave is free software; you can redistribute it and/or modify it | |
6 ## under the terms of the GNU General Public License as published by | |
7 ## the Free Software Foundation; either version 3 of the License, or (at | |
8 ## your option) any later version. | |
9 ## | |
10 ## Octave is distributed in the hope that it will be useful, but | |
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 ## General Public License for more details. | |
14 ## | |
15 ## You should have received a copy of the GNU General Public License | |
16 ## along with Octave; see the file COPYING. If not, see | |
17 ## <http://www.gnu.org/licenses/>. | |
18 | |
5781 | 19 ## -*- texinfo -*- |
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20 ## @cindex warning ids |
5781 | 21 ## @table @code |
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22 ## @item Octave:abbreviated-property-match |
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23 ## By default, the @code{Octave:abbreviated-property-match} warning is enabled. |
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24 ## |
5781 | 25 ## @item Octave:array-to-scalar |
26 ## If the @code{Octave:array-to-scalar} warning is enabled, Octave will | |
27 ## warn when an implicit conversion from an array to a scalar value is | |
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28 ## attempted. |
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29 ## By default, the @code{Octave:array-to-scalar} warning is disabled. |
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30 ## |
5781 | 31 ## @item Octave:array-to-vector |
32 ## If the @code{Octave:array-to-vector} warning is enabled, Octave will | |
33 ## warn when an implicit conversion from an array to a vector value is | |
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34 ## attempted. |
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35 ## By default, the @code{Octave:array-to-vector} warning is disabled. |
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36 ## |
5781 | 37 ## @item Octave:assign-as-truth-value |
38 ## If the @code{Octave:assign-as-truth-value} warning is | |
39 ## enabled, a warning is issued for statements like | |
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40 ## |
5781 | 41 ## @example |
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42 ## @group |
5781 | 43 ## if (s = t) |
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44 ## @dots{} |
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45 ## @end group |
5781 | 46 ## @end example |
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47 ## |
5781 | 48 ## @noindent |
49 ## since such statements are not common, and it is likely that the intent | |
50 ## was to write | |
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51 ## |
5781 | 52 ## @example |
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53 ## @group |
5781 | 54 ## if (s == t) |
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55 ## @dots{} |
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56 ## @end group |
5781 | 57 ## @end example |
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58 ## |
5781 | 59 ## @noindent |
60 ## instead. | |
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61 ## |
5781 | 62 ## There are times when it is useful to write code that contains |
63 ## assignments within the condition of a @code{while} or @code{if} | |
64 ## statement. For example, statements like | |
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65 ## |
5781 | 66 ## @example |
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67 ## @group |
5781 | 68 ## while (c = getc()) |
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69 ## @dots{} |
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70 ## @end group |
5781 | 71 ## @end example |
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72 ## |
5781 | 73 ## @noindent |
74 ## are common in C programming. | |
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75 ## |
5781 | 76 ## It is possible to avoid all warnings about such statements by |
77 ## disabling the @code{Octave:assign-as-truth-value} warning, | |
78 ## but that may also let real errors like | |
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79 ## |
5781 | 80 ## @example |
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81 ## @group |
5781 | 82 ## if (x = 1) # intended to test (x == 1)! |
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83 ## @dots{} |
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84 ## @end group |
5781 | 85 ## @end example |
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86 ## |
5781 | 87 ## @noindent |
88 ## slip by. | |
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89 ## |
5781 | 90 ## In such cases, it is possible suppress errors for specific statements by |
91 ## writing them with an extra set of parentheses. For example, writing the | |
92 ## previous example as | |
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93 ## |
5781 | 94 ## @example |
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95 ## @group |
5781 | 96 ## while ((c = getc())) |
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97 ## @dots{} |
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98 ## @end group |
5781 | 99 ## @end example |
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100 ## |
5781 | 101 ## @noindent |
102 ## will prevent the warning from being printed for this statement, while | |
103 ## allowing Octave to warn about other assignments used in conditional | |
104 ## contexts. | |
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105 ## |
5781 | 106 ## By default, the @code{Octave:assign-as-truth-value} warning is enabled. |
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107 ## |
5781 | 108 ## @item Octave:associativity-change |
109 ## If the @code{Octave:associativity-change} warning is | |
110 ## enabled, Octave will warn about possible changes in the meaning of | |
111 ## some code due to changes in associativity for some operators. | |
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112 ## Associativity changes have typically been made for @sc{matlab} |
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113 ## compatibility. |
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114 ## By default, the @code{Octave:associativity-change} warning is enabled. |
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115 ## |
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116 ## @item Octave:autoload-relative-file-name |
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117 ## If the @code{Octave:autoload-relative-file-name} is enabled, |
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118 ## Octave will warn when parsing autoload() function calls with relative |
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119 ## paths to function files. This usually happens when using autoload() |
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120 ## calls in PKG_ADD files, when the PKG_ADD file is not in the same |
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121 ## directory as the .oct file referred to by the autoload() command. |
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122 ## By default, the @code{Octave:autoload-relative-file-name} warning is enabled. |
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123 ## |
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124 ## @item Octave:broadcast |
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125 ## Warn when performing broadcasting operations. By default, this is |
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126 ## enabled. See @ref{Broadcasting} in the chapter Vectorization and Faster |
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127 ## Code Execution of the manual. |
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128 ## |
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129 ## @item Octave:built-in-variable-assignment |
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130 ## By default, the @code{Octave:built-in-variable-assignment} warning is |
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131 ## enabled. |
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132 ## |
5781 | 133 ## @item Octave:divide-by-zero |
134 ## If the @code{Octave:divide-by-zero} warning is enabled, a | |
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135 ## warning is issued when Octave encounters a division by zero. |
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136 ## By default, the @code{Octave:divide-by-zero} warning is enabled. |
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137 ## |
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138 ## @item Octave:fopen-file-in-path |
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139 ## By default, the @code{Octave:fopen-file-in-path} warning is enabled. |
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140 ## |
5781 | 141 ## @item Octave:function-name-clash |
142 ## If the @code{Octave:function-name-clash} warning is enabled, a | |
143 ## warning is issued when Octave finds that the name of a function | |
144 ## defined in a function file differs from the name of the file. (If | |
145 ## the names disagree, the name declared inside the file is ignored.) | |
146 ## By default, the @code{Octave:function-name-clash} warning is enabled. | |
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147 ## |
5781 | 148 ## @item Octave:future-time-stamp |
149 ## If the @code{Octave:future-time-stamp} warning is enabled, Octave | |
150 ## will print a warning if it finds a function file with a time stamp | |
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151 ## that is in the future. |
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152 ## By default, the @code{Octave:future-time-stamp} warning is enabled. |
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153 ## |
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154 ## @item Octave:glyph-render |
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155 ## By default, the @code{Octave:glyph-render} warning is enabled. |
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156 ## |
5781 | 157 ## @item Octave:imag-to-real |
158 ## If the @code{Octave:imag-to-real} warning is enabled, a warning is | |
159 ## printed for implicit conversions of complex numbers to real numbers. | |
160 ## By default, the @code{Octave:imag-to-real} warning is disabled. | |
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161 ## |
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162 ## @item Octave:load-file-in-path |
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163 ## By default, the @code{Octave:load-file-in-path} warning is enabled. |
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164 ## |
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165 ## @item Octave:logical-conversion |
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166 ## By default, the @code{Octave:logical-conversion} warning is enabled. |
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167 ## |
5794 | 168 ## @item Octave:matlab-incompatible |
169 ## Print warnings for Octave language features that may cause | |
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170 ## compatibility problems with @sc{matlab}. |
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171 ## By default, the @code{Octave:matlab-incompatible} warning is disabled. |
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172 ## |
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173 ## @item Octave:md5sum-file-in-path |
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174 ## By default, the @code{Octave:md5sum-file-in-path} warning is enabled. |
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175 ## |
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176 ## @item Octave:missing-glyph |
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177 ## By default, the @code{Octave:missing-glyph} warning is enabled. |
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178 ## |
5781 | 179 ## @item Octave:missing-semicolon |
180 ## If the @code{Octave:missing-semicolon} warning is enabled, Octave | |
181 ## will warn when statements in function definitions don't end in | |
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182 ## semicolons. |
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183 ## By default the @code{Octave:missing-semicolon} warning is disabled. |
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184 ## |
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185 ## @item Octave:mixed-string-concat |
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186 ## If the @code{Octave:mixed-string-concat} warning is enabled, print a |
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187 ## warning when concatenating a mixture of double and single quoted strings. |
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188 ## By default, the @code{Octave:mixed-string-concat} warning is disabled. |
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189 ## |
5781 | 190 ## @item Octave:neg-dim-as-zero |
191 ## If the @code{Octave:neg-dim-as-zero} warning is enabled, print a warning | |
192 ## for expressions like | |
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193 ## |
5781 | 194 ## @example |
195 ## eye (-1) | |
196 ## @end example | |
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197 ## |
5781 | 198 ## @noindent |
199 ## By default, the @code{Octave:neg-dim-as-zero} warning is disabled. | |
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200 ## |
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201 ## @item Octave:nested-functions-coerced |
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202 ## By default, the @code{Octave:nested-functions-coerced} warning is enabled. |
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203 ## |
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204 ## @item Octave:noninteger-range-as-index |
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205 ## By default, the @code{Octave:noninteger-range-as-index} warning is enabled. |
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206 ## |
5781 | 207 ## @item Octave:num-to-str |
208 ## If the @code{Octave:num-to-str} warning is enable, a warning is | |
209 ## printed for implicit conversions of numbers to their ASCII character | |
210 ## equivalents when strings are constructed using a mixture of strings and | |
211 ## numbers in matrix notation. For example, | |
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212 ## |
5781 | 213 ## @example |
214 ## @group | |
215 ## [ "f", 111, 111 ] | |
216 ## @result{} "foo" | |
217 ## @end group | |
218 ## @end example | |
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219 ## |
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220 ## @noindent |
5781 | 221 ## elicits a warning if the @code{Octave:num-to-str} warning is |
222 ## enabled. By default, the @code{Octave:num-to-str} warning is enabled. | |
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223 ## |
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224 ## @item Octave:possible-matlab-short-circuit-operator |
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225 ## If the @code{Octave:possible-matlab-short-circuit-operator} warning |
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226 ## is enabled, Octave will warn about using the not short circuiting |
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227 ## operators @code{&} and @code{|} inside @code{if} or @code{while} |
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228 ## conditions. They normally never short circuit, but @sc{matlab} always |
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229 ## short circuits if any logical operators are used in a condition. You |
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230 ## can turn on the option |
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231 ## |
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232 ## @example |
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233 ## @group |
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234 ## do_braindead_shortcircuit_evaluation(1) |
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235 ## @end group |
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236 ## @end example |
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237 ## |
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238 ## @noindent |
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239 ## if you would like to enable this short-circuit evaluation in |
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240 ## Octave. Note that the @code{&&} and @code{||} operators always short |
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241 ## circuit in both Octave and @sc{matlab}, so it's only necessary to |
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242 ## enable @sc{matlab}-style short-circuiting it's too arduous to modify |
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243 ## existing code that relies on this behavior. |
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244 ## By default, the @code{Octave:possible-matlab-short-circuit-operator} warning |
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245 ## is enabled. |
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246 ## |
5781 | 247 ## @item Octave:precedence-change |
248 ## If the @code{Octave:precedence-change} warning is enabled, Octave | |
249 ## will warn about possible changes in the meaning of some code due to | |
250 ## changes in precedence for some operators. Precedence changes have | |
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251 ## typically been made for @sc{matlab} compatibility. |
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252 ## By default, the @code{Octave:precedence-change} warning is enabled. |
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253 ## |
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254 ## @item Octave:recursive-path-search |
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255 ## By default, the @code{Octave:recursive-path-search} warning is enabled. |
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256 ## |
5781 | 257 ## @item Octave:reload-forces-clear |
258 ## If several functions have been loaded from the same file, Octave must | |
259 ## clear all the functions before any one of them can be reloaded. If | |
260 ## the @code{Octave:reload-forces-clear} warning is enabled, Octave will | |
261 ## warn you when this happens, and print a list of the additional | |
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262 ## functions that it is forced to clear. |
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263 ## By default, the @code{Octave:reload-forces-clear} warning is enabled. |
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264 ## |
5781 | 265 ## @item Octave:resize-on-range-error |
266 ## If the @code{Octave:resize-on-range-error} warning is enabled, print a | |
267 ## warning when a matrix is resized by an indexed assignment with | |
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268 ## indices outside the current bounds. |
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269 ## By default, the ## @code{Octave:resize-on-range-error} warning is disabled. |
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270 ## |
5794 | 271 ## @item Octave:separator-insert |
272 ## Print warning if commas or semicolons might be inserted | |
273 ## automatically in literal matrices. | |
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274 ## By default, the @code{Octave:separator-insert} warning is disabled. |
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275 ## |
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276 ## @item Octave:shadowed-function |
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277 ## By default, the @code{Octave:shadowed-function} warning is enabled. |
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278 ## |
5794 | 279 ## @item Octave:single-quote-string |
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280 ## Print warning if a single quote character is used to introduce a |
5794 | 281 ## string constant. |
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282 ## By default, the @code{Octave:single-quote-string} warning is disabled. |
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283 ## |
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284 ## @item Octave:singular-matrix-div |
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285 ## By default, the @code{Octave:singular-matrix-div} warning is enabled. |
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286 ## |
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287 ## @item Octave:sqrtm:SingularMatrix |
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288 ## By default, the @code{Octave:sqrtm:SingularMatrix} warning is enabled. |
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289 ## |
5781 | 290 ## @item Octave:str-to-num |
291 ## If the @code{Octave:str-to-num} warning is enabled, a warning is printed | |
292 ## for implicit conversions of strings to their numeric ASCII equivalents. | |
293 ## For example, | |
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294 ## |
5781 | 295 ## @example |
296 ## @group | |
297 ## "abc" + 0 | |
298 ## @result{} 97 98 99 | |
299 ## @end group | |
300 ## @end example | |
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301 ## |
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302 ## @noindent |
5781 | 303 ## elicits a warning if the @code{Octave:str-to-num} warning is enabled. |
304 ## By default, the @code{Octave:str-to-num} warning is disabled. | |
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305 ## |
5781 | 306 ## @item Octave:undefined-return-values |
307 ## If the @code{Octave:undefined-return-values} warning is disabled, | |
308 ## print a warning if a function does not define all the values in | |
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309 ## the return list which are expected. |
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310 ## By default, the @code{Octave:undefined-return-values} warning is enabled. |
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311 ## |
5781 | 312 ## @item Octave:variable-switch-label |
313 ## If the @code{Octave:variable-switch-label} warning is enabled, Octave | |
314 ## will print a warning if a switch label is not a constant or constant | |
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315 ## expression. |
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316 ## By default, the @code{Octave:variable-switch-label} warning is disabled. |
5781 | 317 ## @end table |
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318 |
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319 function warning_ids () |
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320 help ("warning_ids"); |
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321 endfunction |
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322 |
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323 ## Remove from test statistics. No real tests possible |
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324 %!assert (1) |