annotate runtime/doc/spell.txt @ 348:7e819e81117e

updated for version 7.0090
author vimboss
date Wed, 22 Jun 2005 22:35:10 +0000
parents 7033303ea0c0
children 3161473d6462
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1 *spell.txt* For Vim version 7.0aa. Last change: 2005 Jun 22
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3
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4 VIM REFERENCE MANUAL by Bram Moolenaar
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5
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6
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7 Spell checking *spell*
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8
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9 1. Quick start |spell-quickstart|
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10 2. Generating a spell file |spell-mkspell|
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11 3. Spell file format |spell-file-format|
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12
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13 {Vi does not have any of these commands}
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14
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15 Spell checking is not available when the |+syntax| feature has been disabled
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16 at compile time.
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17
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18 ==============================================================================
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19 1. Quick start *spell-quickstart*
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20
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21 This command switches on spell checking: >
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22
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23 :setlocal spell spelllang=en_us
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24
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25 This switches on the 'spell' option and specifies to check for US English.
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26
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27 The words that are not recognized are highlighted with one of these:
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28 SpellBad word not recognized |hl-SpellBad|
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29 SpellRare rare word |hl-SpellRare|
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30 SpellLocal wrong spelling for selected region |hl-SpellLocal|
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31
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32 Vim only checks words for spelling, there is no grammar check.
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33
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34 To search for the next misspelled word:
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35
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36 *]s* *E756*
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37 ]s Move to next misspelled word after the cursor.
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38 A count before the command can be used to repeat.
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39 This uses the @Spell and @NoSpell clusters from syntax
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40 highlighting, see |spell-syntax|.
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41
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42 *[s*
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43 [s Like "]s" but search backwards, find the misspelled
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44 word before the cursor. Doesn't recognize words
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45 split over two lines, thus may stop at words that are
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46 not highlighted as bad.
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47
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48 *]S*
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49 ]S Like "]s" but only stop at bad words, not at rare
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50 words or words for another region.
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51
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52 *[S*
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53 [S Like "]S" but search backwards.
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54
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55
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56 To add words to your own word list: *E764*
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57
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58 *zg*
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59 zg Add word under the cursor as a good word to
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60 'spellfile'. In Visual mode the selected characters
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61 are added as a word (including white space!).
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62
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63 *zw*
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64 zw Add word under the cursor as a wrong (bad) word to
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65 'spellfile'. In Visual mode the selected characters
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66 are added as a word (including white space!).
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67
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68 *:spe* *:spellgood*
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69 :spe[llgood] {word} Add [word} as a good word to 'spellfile'.
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70
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71 *:spellw* *:spellwrong*
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72 :spellw[rong] {word} Add [word} as a wrong (bad) word to 'spellfile'.
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73
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74 After adding a word to 'spellfile' its associated ".spl" file will
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75 automatically be updated. More details about the 'spellfile' format below
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76 |spell-wordlist-format|.
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78
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79 Finding suggestions for bad words:
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80
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81 *z?*
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82 z? For the word under/after the cursor suggest correctly
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83 spelled words. This also works to find alternative
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84 for words that are not highlighted as bad words.
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85 The results are sorted on similarity to the word
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86 under/after the cursor.
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87 This may take a long time. Hit CTRL-C when you are
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88 bored.
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89 You can enter the number of your choice or press
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90 <Enter> if you don't want to replace.
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91 If 'verbose' is non-zero a score will be displayed to
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92 indicate the likeliness to the badly spelled word (the
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93 higher the score the more different).
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94 When a word was replaced the redo command "." will
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95 repeat the word replacement. This works like "ciw",
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96 the good word and <Esc>.
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97
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98 The 'spellsuggest' option influences how the list of suggestions is generated
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99 and sorted. See |'spellsuggest'|.
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101
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102 PERFORMANCE
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103
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104 Note that Vim does on-the-fly spell checking. To make this work fast the
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105 word list is loaded in memory. Thus this uses a lot of memory (1 Mbyte or
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106 more). There might also be a noticeable delay when the word list is loaded,
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107 which happens when 'spelllang' or 'spell' is set. Each word list is only
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108 loaded once, they are not deleted when 'spelllang' is made empty or 'spell' is
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109 reset. When 'encoding' is set the word lists are reloaded, thus you may
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110 notice a delay then too.
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112
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113 REGIONS
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114
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115 A word may be spelled differently in various regions. For example, English
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116 comes in (at least) these variants:
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117
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118 en all regions
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119 en_au Australia
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120 en_ca Canada
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121 en_gb Great Britain
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122 en_nz New Zealand
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123 en_us USA
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124
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125 Words that are not used in one region but are used in another region are
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126 highlighted with SpellLocal |hl-SpellLocal|.
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127
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128 Always use lowercase letters for the language and region names.
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129
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130 When adding a word with |zg| or another command it's always added for all
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131 regions. You can change that by manually editing the 'spellfile'. See
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132 |spell-wordlist-format|.
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133
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134
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135 SPELL FILES
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136
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137 Vim searches for spell files in the "spell" subdirectory of the directories in
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138 'runtimepath'. The name is: LL.EEE.spl, where:
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139 LL the language name
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140 EEE the value of 'encoding'
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141
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142 Only the first file is loaded, the one that is first in 'runtimepath'. If
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143 this succeeds then additionally files with the name LL.EEE.add.spl are loaded.
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144 All the ones that are found are used.
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145
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146 Exceptions:
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147 - Vim uses "latin1" when 'encoding' is "iso-8859-15". The euro sign doesn't
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148 matter for spelling.
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149 - When no spell file for 'encoding' is found "ascii" is tried. This only
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150 works for languages where nearly all words are ASCII, such as English. It
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151 helps when 'encoding' is not "latin1", such as iso-8859-2, and English text
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152 is being edited. For the ".add" files the same name as the found main
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153 spell file is used.
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154
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155 For example, with these values:
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156 'runtimepath' is "~/.vim,/usr/share/vim70,~/.vim/after"
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157 'encoding' is "iso-8859-2"
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158 'spelllang' is "pl"
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159
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160 Vim will look for:
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161 1. ~/.vim/spell/pl.iso-8859-2.spl
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162 2. /usr/share/vim70/spell/pl.iso-8859-2.spl
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163 3. ~/.vim/spell/pl.iso-8859-2.add.spl
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164 4. /usr/share/vim70/spell/pl.iso-8859-2.add.spl
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165 5. ~/.vim/after/spell/pl.iso-8859-2.add.spl
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166
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167 This assumes 1. is not found and 2. is found.
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168
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169 If 'encoding' is "latin1" Vim will look for:
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170 1. ~/.vim/spell/pl.latin1.spl
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171 2. /usr/share/vim70/spell/pl.latin1.spl
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172 3. ~/.vim/after/spell/pl.latin1.spl
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173 4. ~/.vim/spell/pl.ascii.spl
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174 5. /usr/share/vim70/spell/pl.ascii.spl
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175 6. ~/.vim/after/spell/pl.ascii.spl
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176
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177 This assumes none of them are found (Polish doesn't make sense when leaving
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178 out the non-ASCII characters).
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179
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180 Spelling for EBCDIC is currently not supported.
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181
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182 A spell file might not be available in the current 'encoding'. See
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183 |spell-mkspell| about how to create a spell file. Converting a spell file
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184 with "iconv" will NOT work!
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185
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186 *E758* *E759*
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187 When loading a spell file Vim checks that it is properly formatted. If you
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188 get an error the file may be truncated, modified or intended for another Vim
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189 version.
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190
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191
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192 WORDS
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193
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194 Vim uses a fixed method to recognize a word. This is independent of
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195 'iskeyword', so that it also works in help files and for languages that
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196 include characters like '-' in 'iskeyword'. The word characters do depend on
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197 'encoding'.
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198
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199 The table with word characters is stored in the main .spl file. Therefore it
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200 matters what the current locale is when generating it! A .add.spl file does
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201 not contain a word table.
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202
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203 A word that starts with a digit is always ignored. That includes hex numbers
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204 in the form 0xff and 0XFF.
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205
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206
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207 WORD COMBINATIONS
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208
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209 It is possible to spell-check words that include a space. This is used to
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210 recognize words that are invalid when used by themselves, e.g. for "et al.".
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211 It can also be used to recognize "the the" and highlight it.
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212
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213 The number of spaces is irrelevant. In most cases a line break may also
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214 appear. However, this makes it difficult to find out where to start checking
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215 for spelling mistakes. When you make a change to one line and only that line
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216 is redrawn Vim won't look in the previous line, thus when "et" is at the end
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217 of the previous line "al." will be flagged as an error. And when you type
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218 "the<CR>the" the highlighting doesn't appear until the first line is redrawn.
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219 Use |CTRL-L| to redraw right away. "[s" will also stop at a word combination
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220 with a line break.
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221
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222 When encountering a line break Vim skips characters such as '*', '>' and '"',
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223 so that comments in C, shell and Vim code can be spell checked.
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224
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225
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226 SYNTAX HIGHLIGHTING *spell-syntax*
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228 Files that use syntax highlighting can specify where spell checking should be
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229 done:
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230
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231 1. everywhere default
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232 2. in specific items use "contains=@Spell"
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233 3. everywhere but specific items use "contains=@NoSpell"
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234
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235 For the second method adding the @NoSpell cluster will disable spell checking
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236 again. This can be used, for example, to add @Spell to the comments of a
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237 program, and add @NoSpell for items that shouldn't be checked.
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238
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239
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240 VIM SCRIPTS
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241
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242 If you want to write a Vim script that does something with spelling, you may
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243 find these functions useful:
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244
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245 spellbadword() find badly spelled word at the cursor
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246 spellsuggest() get list of spelling suggestions
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247
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248 ==============================================================================
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249 2. Generating a spell file *spell-mkspell*
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250
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251 Vim uses a binary file format for spelling. This greatly speeds up loading
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252 the word list and keeps it small.
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253
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254 You can create a Vim spell file from the .aff and .dic files that Myspell
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255 uses. Myspell is used by OpenOffice.org and Mozilla. You should be able to
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256 find them here:
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257 http://lingucomponent.openoffice.org/spell_dic.html
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258 You can also use a plain word list. The results are the same, the choice
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259 depends on what you find.
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260
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261 Make sure your current locale is set properly, otherwise Vim doesn't know what
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262 characters are upper/lower case letters. If the locale isn't available (e.g.,
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263 when using an MS-Windows codepage on Unix) add tables to the .aff file
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264 |spell-affix-chars|.
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265
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266 :mksp[ell][!] [-ascii] {outname} {inname} ... *:mksp* *:mkspell*
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267 Generate a Vim spell file word lists. Example: >
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268 :mkspell nl nl_NL.words
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269 <
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270 When {outname} ends in ".spl" it is used as the output
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271 file name. Otherwise it should be a language name,
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272 such as "en". The file written will be
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273 {outname}.{encoding}.spl. {encoding} is the value of
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274 the 'encoding' option.
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275
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276 When the output file already exists [!] must be added
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277 to overwrite it.
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278
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279 When the [-ascii] argument is present, words with
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280 non-ascii characters are skipped. The resulting file
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281 ends in "ascii.spl".
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282
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283 The input can be the Myspell format files {inname}.aff
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284 and {inname}.dic. If {inname}.aff does not exist then
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285 {inname} is used as the file name of a plain word
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286 list.
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287
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288 Multiple {inname} arguments can be given to combine
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289 regions into one Vim spell file. Example: >
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290 :mkspell ~/.vim/spell/en /tmp/en_US /tmp/en_CA /tmp/en_AU
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291 < This combines the English word lists for US, CA and AU
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292 into one en.spl file.
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293 Up to eight regions can be combined. *E754* *755*
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294 The REP and SAL items of the first .aff file where
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295 they appear are used. |spell-affix-REP|
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296 |spell-affix-SAL|
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297
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298 This command uses a lot of memory, required to find
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299 the optimal word tree (Polish requires a few hundred
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300 Mbyte). The final result will be much smaller.
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301
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302 When the spell file was written all currently used
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303 spell files will be reloaded.
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304
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305 :mksp[ell] [-ascii] {add-name}
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306 Like ":mkspell" above, using {add-name} as the input
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307 file and producing an output file that has ".spl"
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308 appended.
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309
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310 Since you might want to change a Myspell word list for use with Vim the
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311 following procedure is recommended:
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312
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313 1. Obtain the xx_YY.aff and xx_YY.dic files from Myspell.
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314 2. Make a copy of these files to xx_YY.orig.aff and xx_YY.orig.dic.
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315 3. Change the xx_YY.aff and xx_YY.dic files to remove bad words, add missing
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316 words, define word characters with FOL/LOW/UPP, etc. The distributed
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317 "src/spell/*.diff" files can be used.
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318 4. Set 'encoding' to the desired encoding and use |:mkspell| to generate the
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319 Vim spell file.
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320 5. Try out the spell file with ":set spell spelllang=xx_YY".
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321
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322 When the Myspell files are updated you can merge the differences:
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323 1. Obtain the new Myspell files as xx_YY.new.aff and xx_UU.new.dic.
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324 2. Use Vimdiff to see what changed: >
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325 vimdiff xx_YY.orig.dic xx_YY.new.dic
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326 3. Take over the changes you like in xx_YY.dic.
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327 You may also need to change xx_YY.aff.
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328 4. Rename xx_YY.new.dic to xx_YY.orig.dic and xx_YY.new.aff to xx_YY.new.aff.
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329
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330 ==============================================================================
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331 9. Spell file format *spell-file-format*
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332
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333 This is the format of the files that are used by the person who creates and
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334 maintains a word list.
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335
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336 Note that we avoid the word "dictionary" here. That is because the goal of
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337 spell checking differs from writing a dictionary (as in the book). For
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338 spelling we need a list of words that are OK, thus need not to be highlighted.
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339 Names will not appear in a dictionary, but do appear in a word list. And
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340 some old words are rarely used and are common misspellings. These do appear
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341 in a dictionary but not in a word list.
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342
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343 There are two formats: one with affix compression and one without. The files
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344 with affix compression are used by Myspell (Mozilla and OpenOffice.org). This
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345 requires two files, one with .aff and one with .dic extension. The second
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346 format is a list of words.
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347
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348
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349 FORMAT OF WORD LIST *spell-wordlist-format*
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350
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351 The words must appear one per line. That is all that is required.
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352 Additionally the following items are recognized:
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353 - Empty and blank lines are ignored.
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354 - Lines starting with a # are ignored (comment lines).
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355 - A line starting with "/encoding=", before any word, specifies the encoding
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356 of the file. After the second '=' comes an encoding name. This tells Vim
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357 to setup conversion from the specified encoding to 'encoding'.
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358 - A line starting with "/regions=" specifies the region names that are
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359 supported. Each region name must be two ASCII letters. The first one is
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360 region 1. Thus "/regions=usca" has region 1 "us" and region 2 "ca".
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361 In an addition word list the list should be equal to the main word list!
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362 - A line starting with "/?" specifies a word that should be marked as rare.
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363 - A line starting with "/!" specifies a word that should be marked as bad.
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364 - A line starting with "/=" specifies a word where case must match exactly.
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365 A "?" or "!" may be following: "/=?" and "/=!".
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366 - Digits after "/" indicate the regions in which the word is valid. If no
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367 regions are specified the word is valid in all regions.
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368 - Other lines starting with '/' are reserved for future use. The ones that
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369 are not recognized are ignored (but you do get a warning message).
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370
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371 Example:
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372
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373 # This is an example word list comment
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374 /encoding=latin1 encoding of the file
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375 /regions=uscagb regions "us", "ca" and "gb"
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376 example word for all regions
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377 /1blah word for region 1 "us"
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378 /!vim bad word
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379 /?3Campbell rare word in region 3 "gb"
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380 /='s mornings keep-case word
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381
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382
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383 FORMAT WITH AFFIX COMPRESSION
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384
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385 There are two files: the basic word list and an affix file. The affixes are
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386 used to modify the basic words to get the full word list. This significantly
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387 reduces the number of words, especially for a language like Polish. This is
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388 called affix compression.
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389
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390 The format for the affix and word list files is mostly identical to what
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391 Myspell uses (the spell checker of Mozilla and OpenOffice.org). A description
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392 can be found here:
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393 http://lingucomponent.openoffice.org/affix.readme ~
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394 Note that affixes are case sensitive, this isn't obvious from the description.
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395
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396 Vim supports a few extras. Hopefully Myspell will support these too some day.
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397 See |spell-affix-vim|.
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398
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399 The basic word list and the affix file are combined and turned into a binary
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400 spell file. All the preprocessing has been done, thus this file loads fast.
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401 The binary spell file format is described in the source code (src/spell.c).
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402 But only developers need to know about it.
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403
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404 The preprocessing also allows us to take the Myspell language files and modify
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405 them before the Vim word list is made. The tools for this can be found in the
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406 "src/spell" directory.
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407
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408
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409 WORD LIST FORMAT *spell-dic-format*
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410
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411 A very short example, with line numbers:
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412
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413 1 1234
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414 2 aan
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415 3 Als
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416 4 Etten-Leur
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417 5 et al.
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418 6 's-Gravenhage
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419 7 's-Gravenhaags
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420 8 bedel/P
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421 9 kado/1
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422 10 cadeau/2
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423
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424 The first line contains the number of words. Vim ignores it, but you do get
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425 an error message if it's not there. *E760*
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426
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427 What follows is one word per line. There should be no white space before or
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428 after the word.
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429
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430 When the word only has lower-case letters it will also match with the word
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431 starting with an upper-case letter.
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432
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433 When the word includes an upper-case letter, this means the upper-case letter
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434 is required at this position. The same word with a lower-case letter at this
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435 position will not match. When some of the other letters are upper-case it will
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436 not match either.
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437
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438 The same word with all upper-case characters will always be OK.
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439
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440 word list matches does not match ~
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441 als als Als ALS ALs AlS aLs aLS
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442 Als Als ALS als ALs AlS aLs aLS
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443 ALS ALS als Als ALs AlS aLs aLS
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444 AlS AlS ALS als Als ALs aLs aLS
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445
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446 The KEP affix ID can be used to specifically match a word with identical case
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447 only, see below |spell-affix-KEP|.
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448
237
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449 Note in line 5 to 7 that non-word characters are used. You can include
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450 any character in a word. When checking the text a word still only matches
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451 when it appears with a non-word character before and after it. For Myspell a
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452 word starting with a non-word character probably won't work.
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453
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454 After the word there is an optional slash and flags. Most of these flags are
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455 letters that indicate the affixes that can be used with this word.
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456
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457 *spell-affix-vim*
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458 A flag that Vim adds and is not in Myspell is the flag defined with KEP in the
308
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459 affix file. This has the meaning that case matters. This can be used if the
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460 word does not have the first letter in upper case at the start of a sentence.
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461 Example (assuming that = was used for KEP):
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462
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463 word list matches does not match ~
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464 's morgens/= 's morgens 'S morgens 's Morgens
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465 's Morgens 's Morgens 'S morgens 's morgens
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466
237
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467 *spell-affix-mbyte*
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468 The basic word list is normally in an 8-bit encoding, which is mentioned in
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469 the affix file. The affix file must always be in the same encoding as the
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470 word list. This is compatible with Myspell. For Vim the encoding may also be
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471 something else, any encoding that "iconv" supports. The "SET" line must
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472 specify the name of the encoding. When using a multi-byte encoding it's
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473 possible to use more different affixes.
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474
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475
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476 CHARACTER TABLES
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477 *spell-affix-chars*
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478 When using an 8-bit encoding the affix file should define what characters are
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479 word characters (as specified with ENC). This is because the system where
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480 ":mkspell" is used may not support a locale with this encoding and isalpha()
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481 won't work. For example when using "cp1250" on Unix.
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482
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483 *E761* *E762* *spell-affix-FOL*
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484 *spell-affix-LOW* *spell-affix-UPP*
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485 Three lines in the affix file are needed. Simplistic example:
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486
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487 FOL áëñ ~
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488 LOW áëñ ~
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489 UPP ÁËÑ ~
258
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490
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491 All three lines must have exactly the same number of characters.
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492
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493 The "FOL" line specifies the case-folded characters. These are used to
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494 compare words while ignoring case. For most encodings this is identical to
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495 the lower case line.
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496
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497 The "LOW" line specifies the characters in lower-case. Mostly it's equal to
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498 the "FOL" line.
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499
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500 The "UPP" line specifies the characters with upper-case. That is, a character
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501 is upper-case where it's different from the character at the same position in
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502 "FOL".
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503
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504 ASCII characters should be omitted, Vim always handles these in the same way.
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505 When the encoding is UTF-8 no word characters need to be specified.
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506
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507 *E763*
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508 All spell files for the same encoding must use the same word characters,
264
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509 otherwise they can't be combined without errors. The XX.ascii.spl spell file
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510 generated with the "-ascii" argument will not contain the table with
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511 characters, so that it can be combine with spell files for any encoding.
258
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512
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513
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514 AFFIXES
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515 *spell-affix-PFX* *spell-affix-SFX*
341
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516 The usual PFX (prefix) and SFX (suffix) lines are supported (see the Myspell
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517 documentation). Note that Myspell ignores any extra text after the relevant
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518 info. Vim requires this text to start with a "#" so that mistakes don't go
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519 unnoticed. Example:
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diff changeset
520
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521 SFX F 0 in [^i]n # Spion > Spionin ~
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522
341
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523 *spell-affix-PFXPOSTPONE*
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diff changeset
524 When an affix file has very many prefixes that apply to many words it's not
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525 possible to build the whole word list in memory. This applies to Hebrew (a
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526 list with all words is over a Gbyte). In that case applying prefixes must be
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527 postponed. This makes spell checking slower. It is indicated by this keyword
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diff changeset
528 in the .aff file:
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diff changeset
529
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530 PFXPOSTPONE ~
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vimboss
parents: 336
diff changeset
531
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532 Only prefixes without a chop string can be postponed, prefixes with a chop
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533 string will still be included in the word list.
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diff changeset
534
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diff changeset
535
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536 KEEP-CASE WORDS
314
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537 *spell-affix-KEP*
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538 In the affix file a KEP line can be used to define the affix name used for
308
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diff changeset
539 keep-case words. Example:
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diff changeset
540
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541 KEP = ~
308
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542
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543 See above for an example |spell-affix-vim|.
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544
341
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545
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546 RARE WORDS
314
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547 *spell-affix-RAR*
308
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548 In the affix file a RAR line can be used to define the affix name used for
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549 rare words. Example:
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550
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551 RAR ? ~
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552
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553 Rare words are highlighted differently from bad words. This is to be used for
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554 words that are correct for the language, but are hardly ever used and could be
348
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555 a typing mistake anyway. When the same word is found as good it won't be
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556 highlighted as rare.
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557
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558
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559 BAD WORDS
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560 *spell-affix-BAD*
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561 In the affix file a BAD line can be used to define the affix name used for
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562 bad words. Example:
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563
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564 BAD ! ~
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565
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566 This can be used to exclude words that would otherwise be good. For example
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567 "the the". Once a word has been marked as bad it won't be undone by
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568 encountering the same word as good.
308
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569
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570
323
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571 REPLACEMENTS *spell-affix-REP*
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572
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573 In the affix file REP items can be used to define common mistakes. This is
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574 used to make spelling suggestions. The items define the "from" text and the
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575 "to" replacement. Example:
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576
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577 REP 4 ~
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578 REP f ph ~
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579 REP ph f ~
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580 REP k ch ~
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581 REP ch k ~
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582
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583 The first line specifies the number of REP lines following. Vim ignores it.
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584
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585
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586 SIMILAR CHARACTERS *spell-affix-MAP*
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587
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588 In the affix file MAP items can be used to define letters that very much
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589 alike. This is mostly used for a letter with different accents. This is used
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590 to prefer suggestions with these letters substituted. Example:
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591
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592 MAP 2 ~
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593 MAP eéëêè ~
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594 MAP uüùúû ~
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595
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596 The first line specifies the number of MAP lines following. Vim ignores it.
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597
336
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598 A letter must only appear in one of the MAP items. It's a bit more efficient
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599 if the first letter is ASCII or at least one without accents.
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600
323
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601
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602 SOUNDS-A-LIKE *spell-affix-SAL*
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603
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604 In the affix file SAL items can be used to define the sounds-a-like mechanism
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605 to be used. The main items define the "from" text and the "to" replacement.
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606 Example:
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607
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608 SAL CIA X ~
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609 SAL CH X ~
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610 SAL C K ~
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611 SAL K K ~
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612
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613 TODO: explain how it works.
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614
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615 There are a few special items:
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616
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617 SAL followup true ~
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618 SAL collapse_result true ~
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619 SAL remove_accents true ~
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620
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621 "1" has the same meaning as "true". Any other value means "false".
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622
221
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parents:
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623 vim:tw=78:sw=4:ts=8:ft=help:norl: