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1 " Vim syntax file
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2 " Language: YAML (YAML Ain't Markup Language) 1.2
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3 " Maintainer: Nikolai Pavlov <zyx.vim@gmail.com>
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4 " First author: Nikolai Weibull <now@bitwi.se>
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5 " Latest Revision: 2015-03-28
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7
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6
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7 if exists('b:current_syntax')
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8 finish
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9 endif
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10
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11 let s:cpo_save = &cpo
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12 set cpo&vim
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13
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14 " Choose the schema to use
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15 " TODO: Validate schema
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16 if !exists('b:yaml_schema')
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17 if exists('g:yaml_schema')
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18 let b:yaml_schema = g:yaml_schema
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19 else
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20 let b:yaml_schema = 'core'
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21 endif
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22 endif
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23
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24 let s:ns_char = '\%([\n\r\uFEFF \t]\@!\p\)'
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25 let s:ns_word_char = '[[:alnum:]_\-]'
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26 let s:ns_uri_char = '\%(%\x\x\|'.s:ns_word_char.'\|[#/;?:@&=+$,.!~*''()[\]]\)'
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27 let s:ns_tag_char = '\%(%\x\x\|'.s:ns_word_char.'\|[#/;?:@&=+$.~*''()]\)'
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28 let s:c_ns_anchor_char = '\%([\n\r\uFEFF \t,[\]{}]\@!\p\)'
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29 let s:c_indicator = '[\-?:,[\]{}#&*!|>''"%@`]'
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30 let s:c_flow_indicator = '[,[\]{}]'
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31
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32 let s:ns_char_without_c_indicator = substitute(s:ns_char, '\v\C[\zs', '\=s:c_indicator[1:-2]', '')
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33
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34 let s:_collection = '[^\@!\(\%(\\\.\|\[^\\\]]\)\+\)]'
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35 let s:_neg_collection = '[^\(\%(\\\.\|\[^\\\]]\)\+\)]'
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36 function s:SimplifyToAssumeAllPrintable(p)
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37 return substitute(a:p, '\V\C\\%('.s:_collection.'\\@!\\p\\)', '[^\1]', '')
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38 endfunction
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39 let s:ns_char = s:SimplifyToAssumeAllPrintable(s:ns_char)
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40 let s:ns_char_without_c_indicator = s:SimplifyToAssumeAllPrintable(s:ns_char_without_c_indicator)
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41 let s:c_ns_anchor_char = s:SimplifyToAssumeAllPrintable(s:c_ns_anchor_char)
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42
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43 function s:SimplifyAdjacentCollections(p)
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44 return substitute(a:p, '\V\C'.s:_collection.'\\|'.s:_collection, '[\1\2]', 'g')
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45 endfunction
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46 let s:ns_uri_char = s:SimplifyAdjacentCollections(s:ns_uri_char)
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47 let s:ns_tag_char = s:SimplifyAdjacentCollections(s:ns_tag_char)
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48
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49 let s:c_verbatim_tag = '!<'.s:ns_uri_char.'\+>'
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50 let s:c_named_tag_handle = '!'.s:ns_word_char.'\+!'
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51 let s:c_secondary_tag_handle = '!!'
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52 let s:c_primary_tag_handle = '!'
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53 let s:c_tag_handle = '\%('.s:c_named_tag_handle.
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54 \ '\|'.s:c_secondary_tag_handle.
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55 \ '\|'.s:c_primary_tag_handle.'\)'
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56 let s:c_ns_shorthand_tag = s:c_tag_handle . s:ns_tag_char.'\+'
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57 let s:c_non_specific_tag = '!'
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58 let s:c_ns_tag_property = s:c_verbatim_tag.
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59 \ '\|'.s:c_ns_shorthand_tag.
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60 \ '\|'.s:c_non_specific_tag
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61
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62 let s:c_ns_anchor_name = s:c_ns_anchor_char.'\+'
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63 let s:c_ns_anchor_property = '&'.s:c_ns_anchor_name
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64 let s:c_ns_alias_node = '\*'.s:c_ns_anchor_name
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65
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66 let s:ns_directive_name = s:ns_char.'\+'
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67
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68 let s:ns_local_tag_prefix = '!'.s:ns_uri_char.'*'
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69 let s:ns_global_tag_prefix = s:ns_tag_char.s:ns_uri_char.'*'
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70 let s:ns_tag_prefix = s:ns_local_tag_prefix.
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71 \ '\|'.s:ns_global_tag_prefix
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72
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73 let s:ns_plain_safe_out = s:ns_char
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74 let s:ns_plain_safe_in = '\%('.s:c_flow_indicator.'\@!'.s:ns_char.'\)'
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75
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76 let s:ns_plain_safe_in = substitute(s:ns_plain_safe_in, '\V\C\\%('.s:_collection.'\\@!'.s:_neg_collection.'\\)', '[^\1\2]', '')
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77 let s:ns_plain_safe_in_without_colhash = substitute(s:ns_plain_safe_in, '\V\C'.s:_neg_collection, '[^\1:#]', '')
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78 let s:ns_plain_safe_out_without_colhash = substitute(s:ns_plain_safe_out, '\V\C'.s:_neg_collection, '[^\1:#]', '')
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79
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80 let s:ns_plain_first_in = '\%('.s:ns_char_without_c_indicator.'\|[?:\-]\%('.s:ns_plain_safe_in.'\)\@=\)'
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81 let s:ns_plain_first_out = '\%('.s:ns_char_without_c_indicator.'\|[?:\-]\%('.s:ns_plain_safe_out.'\)\@=\)'
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82
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83 let s:ns_plain_char_in = '\%('.s:ns_char.'#\|:'.s:ns_plain_safe_in.'\|'.s:ns_plain_safe_in_without_colhash.'\)'
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84 let s:ns_plain_char_out = '\%('.s:ns_char.'#\|:'.s:ns_plain_safe_out.'\|'.s:ns_plain_safe_out_without_colhash.'\)'
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85
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86 let s:ns_plain_out = s:ns_plain_first_out . s:ns_plain_char_out.'*'
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87 let s:ns_plain_in = s:ns_plain_first_in . s:ns_plain_char_in.'*'
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88
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89
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90 syn keyword yamlTodo contained TODO FIXME XXX NOTE
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91
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92 syn region yamlComment display oneline start='\%\(^\|\s\)#' end='$'
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93 \ contains=yamlTodo
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94
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95 execute 'syn region yamlDirective oneline start='.string('^\ze%'.s:ns_directive_name.'\s\+').' '.
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96 \ 'end="$" '.
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97 \ 'contains=yamlTAGDirective,'.
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98 \ 'yamlYAMLDirective,'.
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99 \ 'yamlReservedDirective '.
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100 \ 'keepend'
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101
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102 syn match yamlTAGDirective '%TAG\s\+' contained nextgroup=yamlTagHandle
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103 execute 'syn match yamlTagHandle contained nextgroup=yamlTagPrefix '.string(s:c_tag_handle.'\s\+')
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104 execute 'syn match yamlTagPrefix contained nextgroup=yamlComment ' . string(s:ns_tag_prefix)
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105
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106 syn match yamlYAMLDirective '%YAML\s\+' contained nextgroup=yamlYAMLVersion
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107 syn match yamlYAMLVersion '\d\+\.\d\+' contained nextgroup=yamlComment
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108
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109 execute 'syn match yamlReservedDirective contained nextgroup=yamlComment '.
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110 \string('%\%(\%(TAG\|YAML\)\s\)\@!'.s:ns_directive_name)
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111
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112 syn region yamlFlowString matchgroup=yamlFlowStringDelimiter start='"' skip='\\"' end='"'
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113 \ contains=yamlEscape
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114 \ nextgroup=yamlKeyValueDelimiter
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115 syn region yamlFlowString matchgroup=yamlFlowStringDelimiter start="'" skip="''" end="'"
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116 \ contains=yamlSingleEscape
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117 \ nextgroup=yamlKeyValueDelimiter
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118 syn match yamlEscape contained '\\\%([\\"abefnrtv\^0_ NLP\n]\|x\x\x\|u\x\{4}\|U\x\{8}\)'
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119 syn match yamlSingleEscape contained "''"
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120
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121 syn match yamlBlockScalarHeader contained '\s\+\zs[|>]\%([+-]\=[1-9]\|[1-9]\=[+-]\)\='
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122
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123 syn cluster yamlConstant contains=yamlBool,yamlNull
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124
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125 syn cluster yamlFlow contains=yamlFlowString,yamlFlowMapping,yamlFlowCollection
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126 syn cluster yamlFlow add=yamlFlowMappingKey,yamlFlowMappingMerge
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127 syn cluster yamlFlow add=@yamlConstant,yamlPlainScalar,yamlFloat
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128 syn cluster yamlFlow add=yamlTimestamp,yamlInteger,yamlMappingKeyStart
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129 syn cluster yamlFlow add=yamlComment
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130 syn region yamlFlowMapping matchgroup=yamlFlowIndicator start='{' end='}' contains=@yamlFlow
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131 syn region yamlFlowCollection matchgroup=yamlFlowIndicator start='\[' end='\]' contains=@yamlFlow
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132
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133 execute 'syn match yamlPlainScalar /'.s:ns_plain_out.'/'
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134 execute 'syn match yamlPlainScalar contained /'.s:ns_plain_in.'/'
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135
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136 syn match yamlMappingKeyStart '?\ze\s'
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137 syn match yamlMappingKeyStart '?' contained
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138
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139 execute 'syn match yamlFlowMappingKey /\%#=1'.s:ns_plain_in.'\%(\s\+'.s:ns_plain_in.'\)*\ze\s*:/ contained '.
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140 \'nextgroup=yamlKeyValueDelimiter'
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141 syn match yamlFlowMappingMerge /<<\ze\s*:/ contained nextgroup=yamlKeyValueDelimiter
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142
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143 syn match yamlBlockCollectionItemStart '^\s*\zs-\%(\s\+-\)*\s' nextgroup=yamlBlockMappingKey,yamlBlockMappingMerge
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144 " Use the old regexp engine, the NFA engine doesn't like all the \@ items.
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145 execute 'syn match yamlBlockMappingKey /\%#=1^\s*\zs'.s:ns_plain_out.'\%(\s\+'.s:ns_plain_out.'\)*\ze\s*:\%(\s\|$\)/ '.
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146 \'nextgroup=yamlKeyValueDelimiter'
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147 execute 'syn match yamlBlockMappingKey /\%#=1\s*\zs'.s:ns_plain_out.'\%(\s\+'.s:ns_plain_out.'\)*\ze\s*:\%(\s\|$\)/ contained '.
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148 \'nextgroup=yamlKeyValueDelimiter'
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149 syn match yamlBlockMappingMerge /^\s*\zs<<\ze:\%(\s\|$\)/ nextgroup=yamlKeyValueDelimiter
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150 syn match yamlBlockMappingMerge /<<\ze\s*:\%(\s\|$\)/ nextgroup=yamlKeyValueDelimiter contained
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151
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152 syn match yamlKeyValueDelimiter /\s*:/ contained
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153 syn match yamlKeyValueDelimiter /\s*:/ contained
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154
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155 syn cluster yamlScalarWithSpecials contains=yamlPlainScalar,yamlBlockMappingKey,yamlFlowMappingKey
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156
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157 let s:_bounder = s:SimplifyToAssumeAllPrintable('\%([[\]{}, \t]\@!\p\)')
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158 if b:yaml_schema is# 'json'
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159 syn keyword yamlNull null contained containedin=@yamlScalarWithSpecials
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160 syn keyword yamlBool true false
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161 exe 'syn match yamlInteger /'.s:_bounder.'\@1<!\%(0\|-\=[1-9][0-9]*\)'.s:_bounder.'\@!/ contained containedin=@yamlScalarWithSpecials'
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162 exe 'syn match yamlFloat /'.s:_bounder.'\@1<!\%(-\=[1-9][0-9]*\%(\.[0-9]*\)\=\(e[-+]\=[0-9]\+\)\=\|0\|-\=\.inf\|\.nan\)'.s:_bounder.'\@!/ contained containedin=@yamlScalarWithSpecials'
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163 elseif b:yaml_schema is# 'core'
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164 syn keyword yamlNull null Null NULL contained containedin=@yamlScalarWithSpecials
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165 syn keyword yamlBool true True TRUE false False FALSE contained containedin=@yamlScalarWithSpecials
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166 exe 'syn match yamlNull /'.s:_bounder.'\@1<!\~'.s:_bounder.'\@!/ contained containedin=@yamlScalarWithSpecials'
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167 exe 'syn match yamlInteger /'.s:_bounder.'\@1<!\%([+-]\=\%(0\%(b[0-1_]\+\|[0-7_]\+\|x[0-9a-fA-F_]\+\)\=\|\%([1-9][0-9_]*\%(:[0-5]\=\d\)\+\)\)\|[1-9][0-9_]*\)'.s:_bounder.'\@!/ contained containedin=@yamlScalarWithSpecials'
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168 exe 'syn match yamlFloat /'.s:_bounder.'\@1<!\%([+-]\=\%(\%(\d[0-9_]*\)\.[0-9_]*\%([eE][+-]\=\d\+\)\=\|\.[0-9_]\+\%([eE][-+]\=[0-9]\+\)\=\|\d[0-9_]*\%(:[0-5]\=\d\)\+\.[0-9_]*\|\.\%(inf\|Inf\|INF\)\)\|\%(\.\%(nan\|NaN\|NAN\)\)\)'.s:_bounder.'\@!/ contained containedin=@yamlScalarWithSpecials'
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169 elseif b:yaml_schema is# 'pyyaml'
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170 syn keyword yamlNull null Null NULL contained containedin=@yamlScalarWithSpecials
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171 syn keyword yamlBool true True TRUE false False FALSE yes Yes YES no No NO on On ON off Off OFF contained containedin=@yamlScalarWithSpecials
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172 exe 'syn match yamlNull /'.s:_bounder.'\@1<!\~'.s:_bounder.'\@!/ contained containedin=@yamlScalarWithSpecials'
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173 exe 'syn match yamlFloat /'.s:_bounder.'\@1<!\%(\v[-+]?%(\d[0-9_]*)\.[0-9_]*%([eE][-+]\d+)?|\.[0-9_]+%([eE][-+]\d+)?|[-+]?\d[0-9_]*%(\:[0-5]?\d)+\.[0-9_]*|[-+]?\.%(inf|Inf|INF)|\.%(nan|NaN|NAN)\m\)'.s:_bounder.'\@!/ contained containedin=@yamlScalarWithSpecials'
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174 exe 'syn match yamlInteger /'.s:_bounder.'\@1<!\%(\v[-+]?0b[0-1_]+|[-+]?0[0-7_]+|[-+]?%(0|[1-9][0-9_]*)|[-+]?0x[0-9a-fA-F_]+|[-+]?[1-9][0-9_]*%(:[0-5]?\d)+\m\)'.s:_bounder.'\@!/ contained containedin=@yamlScalarWithSpecials'
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175 exe 'syn match yamlTimestamp /'.s:_bounder.'\@1<!\%(\v\d\d\d\d\-\d\d\-\d\d|\d\d\d\d \-\d\d? \-\d\d?%([Tt]|[ \t]+)\d\d?\:\d\d \:\d\d %(\.\d*)?%([ \t]*%(Z|[-+]\d\d?%(\:\d\d)?))?\m\)'.s:_bounder.'\@!/ contained containedin=@yamlScalarWithSpecials'
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176 elseif b:yaml_schema is# 'failsafe'
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177 " Nothing
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178 endif
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179 unlet s:_bounder
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180
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181
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182 execute 'syn match yamlNodeTag '.string(s:c_ns_tag_property)
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183 execute 'syn match yamlAnchor '.string(s:c_ns_anchor_property)
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184 execute 'syn match yamlAlias '.string(s:c_ns_alias_node)
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185
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186 syn match yamlDocumentStart '^---\ze\%(\s\|$\)'
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187 syn match yamlDocumentEnd '^\.\.\.\ze\%(\s\|$\)'
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188
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189 hi def link yamlTodo Todo
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190 hi def link yamlComment Comment
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191
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192 hi def link yamlDocumentStart PreProc
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193 hi def link yamlDocumentEnd PreProc
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194
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195 hi def link yamlDirectiveName Keyword
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196
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197 hi def link yamlTAGDirective yamlDirectiveName
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198 hi def link yamlTagHandle String
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199 hi def link yamlTagPrefix String
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200
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201 hi def link yamlYAMLDirective yamlDirectiveName
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202 hi def link yamlReservedDirective Error
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203 hi def link yamlYAMLVersion Number
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204
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205 hi def link yamlString String
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206 hi def link yamlFlowString yamlString
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207 hi def link yamlFlowStringDelimiter yamlString
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208 hi def link yamlEscape SpecialChar
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209 hi def link yamlSingleEscape SpecialChar
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210
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211 hi def link yamlBlockCollectionItemStart Label
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212 hi def link yamlBlockMappingKey Identifier
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213 hi def link yamlBlockMappingMerge Special
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214
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215 hi def link yamlFlowMappingKey Identifier
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216 hi def link yamlFlowMappingMerge Special
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217
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218 hi def link yamlMappingKeyStart Special
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219 hi def link yamlFlowIndicator Special
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220 hi def link yamlKeyValueDelimiter Special
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221
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222 hi def link yamlConstant Constant
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223
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224 hi def link yamlNull yamlConstant
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225 hi def link yamlBool yamlConstant
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226
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227 hi def link yamlAnchor Type
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228 hi def link yamlAlias Type
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229 hi def link yamlNodeTag Type
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230
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231 hi def link yamlInteger Number
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232 hi def link yamlFloat Float
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233 hi def link yamlTimestamp Number
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234
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235 let b:current_syntax = "yaml"
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236
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237 unlet s:ns_word_char s:ns_uri_char s:c_verbatim_tag s:c_named_tag_handle s:c_secondary_tag_handle s:c_primary_tag_handle s:c_tag_handle s:ns_tag_char s:c_ns_shorthand_tag s:c_non_specific_tag s:c_ns_tag_property s:c_ns_anchor_char s:c_ns_anchor_name s:c_ns_anchor_property s:c_ns_alias_node s:ns_char s:ns_directive_name s:ns_local_tag_prefix s:ns_global_tag_prefix s:ns_tag_prefix s:c_indicator s:ns_plain_safe_out s:c_flow_indicator s:ns_plain_safe_in s:ns_plain_first_in s:ns_plain_first_out s:ns_plain_char_in s:ns_plain_char_out s:ns_plain_out s:ns_plain_in s:ns_char_without_c_indicator s:ns_plain_safe_in_without_colhash s:ns_plain_safe_out_without_colhash
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238 unlet s:_collection s:_neg_collection
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239 delfunction s:SimplifyAdjacentCollections
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240 delfunction s:SimplifyToAssumeAllPrintable
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241
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242 let &cpo = s:cpo_save
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243 unlet s:cpo_save
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