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32061
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1 " Vim syntax file
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2 " Language: Python 2
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3 " Maintainer: Zvezdan Petkovic <zpetkovic@acm.org>
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4 " Last Change: 2016 Oct 29
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5 " Credits: Neil Schemenauer <nas@python.ca>
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6 " Dmitry Vasiliev
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7 "
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8 " This version is a major rewrite by Zvezdan Petkovic.
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9 "
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10 " - introduced highlighting of doctests
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11 " - updated keywords, built-ins, and exceptions
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12 " - corrected regular expressions for
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13 "
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14 " * functions
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15 " * decorators
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16 " * strings
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17 " * escapes
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18 " * numbers
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19 " * space error
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20 "
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21 " - corrected synchronization
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22 " - more highlighting is ON by default, except
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23 " - space error highlighting is OFF by default
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24 "
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25 " Optional highlighting can be controlled using these variables.
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26 "
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27 " let python_no_builtin_highlight = 1
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28 " let python_no_doctest_code_highlight = 1
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29 " let python_no_doctest_highlight = 1
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30 " let python_no_exception_highlight = 1
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31 " let python_no_number_highlight = 1
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32 " let python_space_error_highlight = 1
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33 "
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34 " All the options above can be switched on together.
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35 "
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36 " let python_highlight_all = 1
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37 "
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38 """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
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39 " NOTE: This file is a copy of the last commit of runtime/syntax/python.vim
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40 " that still supported Python 2. There is support for Python 3, up to 3.5,
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41 " and it was kept in the file as is, because it supports the straddling code
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42 " (Python 2 and 3 compatible) better.
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43 """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
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44
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45 " quit when a syntax file was already loaded.
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46 if exists("b:current_syntax")
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47 finish
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48 endif
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49
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50 " We need nocompatible mode in order to continue lines with backslashes.
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51 " Original setting will be restored.
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52 let s:cpo_save = &cpo
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53 set cpo&vim
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54
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55 if exists("python_no_doctest_highlight")
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56 let python_no_doctest_code_highlight = 1
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57 endif
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58
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59 if exists("python_highlight_all")
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60 if exists("python_no_builtin_highlight")
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61 unlet python_no_builtin_highlight
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62 endif
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63 if exists("python_no_doctest_code_highlight")
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64 unlet python_no_doctest_code_highlight
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65 endif
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66 if exists("python_no_doctest_highlight")
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67 unlet python_no_doctest_highlight
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68 endif
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69 if exists("python_no_exception_highlight")
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70 unlet python_no_exception_highlight
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71 endif
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72 if exists("python_no_number_highlight")
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73 unlet python_no_number_highlight
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74 endif
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75 let python_space_error_highlight = 1
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76 endif
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77
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78 " Keep Python keywords in alphabetical order inside groups for easy
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79 " comparison with the table in the 'Python Language Reference'
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80 " https://docs.python.org/2/reference/lexical_analysis.html#keywords,
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81 " https://docs.python.org/3/reference/lexical_analysis.html#keywords.
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82 " Groups are in the order presented in NAMING CONVENTIONS in syntax.txt.
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83 " Exceptions come last at the end of each group (class and def below).
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84 "
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85 " Keywords 'with' and 'as' are new in Python 2.6
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86 " (use 'from __future__ import with_statement' in Python 2.5).
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87 "
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88 " Some compromises had to be made to support both Python 3 and 2.
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89 " We include Python 3 features, but when a definition is duplicated,
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90 " the last definition takes precedence.
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91 "
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92 " - 'False', 'None', and 'True' are keywords in Python 3 but they are
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93 " built-ins in 2 and will be highlighted as built-ins below.
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94 " - 'exec' is a built-in in Python 3 and will be highlighted as
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95 " built-in below.
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96 " - 'nonlocal' is a keyword in Python 3 and will be highlighted.
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97 " - 'print' is a built-in in Python 3 and will be highlighted as
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98 " built-in below (use 'from __future__ import print_function' in 2)
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99 " - async and await were added in Python 3.5 and are soft keywords.
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100 "
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101 syn keyword pythonStatement False None True
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102 syn keyword pythonStatement as assert break continue del exec global
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103 syn keyword pythonStatement lambda nonlocal pass print return with yield
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104 syn keyword pythonStatement class def nextgroup=pythonFunction skipwhite
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105 syn keyword pythonConditional elif else if
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106 syn keyword pythonRepeat for while
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107 syn keyword pythonOperator and in is not or
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108 syn keyword pythonException except finally raise try
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109 syn keyword pythonInclude from import
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110 syn keyword pythonAsync async await
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111
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112 " Decorators (new in Python 2.4)
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113 " A dot must be allowed because of @MyClass.myfunc decorators.
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114 syn match pythonDecorator "@" display contained
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115 syn match pythonDecoratorName "@\s*\h\%(\w\|\.\)*" display contains=pythonDecorator
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116
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117 " Python 3.5 introduced the use of the same symbol for matrix multiplication:
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118 " https://www.python.org/dev/peps/pep-0465/. We now have to exclude the
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119 " symbol from highlighting when used in that context.
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120 " Single line multiplication.
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121 syn match pythonMatrixMultiply
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122 \ "\%(\w\|[])]\)\s*@"
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123 \ contains=ALLBUT,pythonDecoratorName,pythonDecorator,pythonFunction,pythonDoctestValue
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124 \ transparent
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125 " Multiplication continued on the next line after backslash.
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126 syn match pythonMatrixMultiply
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127 \ "[^\\]\\\s*\n\%(\s*\.\.\.\s\)\=\s\+@"
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128 \ contains=ALLBUT,pythonDecoratorName,pythonDecorator,pythonFunction,pythonDoctestValue
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129 \ transparent
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130 " Multiplication in a parenthesized expression over multiple lines with @ at
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131 " the start of each continued line; very similar to decorators and complex.
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132 syn match pythonMatrixMultiply
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133 \ "^\s*\%(\%(>>>\|\.\.\.\)\s\+\)\=\zs\%(\h\|\%(\h\|[[(]\).\{-}\%(\w\|[])]\)\)\s*\n\%(\s*\.\.\.\s\)\=\s\+@\%(.\{-}\n\%(\s*\.\.\.\s\)\=\s\+@\)*"
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134 \ contains=ALLBUT,pythonDecoratorName,pythonDecorator,pythonFunction,pythonDoctestValue
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135 \ transparent
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136
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137 syn match pythonFunction "\h\w*" display contained
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138
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139 syn match pythonComment "#.*$" contains=pythonTodo,@Spell
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140 syn keyword pythonTodo FIXME NOTE NOTES TODO XXX contained
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141
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142 " Triple-quoted strings can contain doctests.
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143 syn region pythonString matchgroup=pythonQuotes
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144 \ start=+[uU]\=\z(['"]\)+ end="\z1" skip="\\\\\|\\\z1"
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145 \ contains=pythonEscape,@Spell
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146 syn region pythonString matchgroup=pythonTripleQuotes
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147 \ start=+[uU]\=\z('''\|"""\)+ end="\z1" keepend
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148 \ contains=pythonEscape,pythonSpaceError,pythonDoctest,@Spell
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149 syn region pythonRawString matchgroup=pythonQuotes
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150 \ start=+[uU]\=[rR]\z(['"]\)+ end="\z1" skip="\\\\\|\\\z1"
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151 \ contains=@Spell
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152 syn region pythonRawString matchgroup=pythonTripleQuotes
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153 \ start=+[uU]\=[rR]\z('''\|"""\)+ end="\z1" keepend
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154 \ contains=pythonSpaceError,pythonDoctest,@Spell
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155
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156 syn match pythonEscape +\\[abfnrtv'"\\]+ contained
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157 syn match pythonEscape "\\\o\{1,3}" contained
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158 syn match pythonEscape "\\x\x\{2}" contained
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159 syn match pythonEscape "\%(\\u\x\{4}\|\\U\x\{8}\)" contained
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160 " Python allows case-insensitive Unicode IDs: http://www.unicode.org/charts/
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161 syn match pythonEscape "\\N{\a\+\%(\s\a\+\)*}" contained
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162 syn match pythonEscape "\\$"
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163
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164 " It is very important to understand all details before changing the
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165 " regular expressions below or their order.
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166 " The word boundaries are *not* the floating-point number boundaries
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167 " because of a possible leading or trailing decimal point.
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168 " The expressions below ensure that all valid number literals are
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169 " highlighted, and invalid number literals are not. For example,
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170 "
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171 " - a decimal point in '4.' at the end of a line is highlighted,
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172 " - a second dot in 1.0.0 is not highlighted,
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173 " - 08 is not highlighted,
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174 " - 08e0 or 08j are highlighted,
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175 "
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176 " and so on, as specified in the 'Python Language Reference'.
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177 " https://docs.python.org/2/reference/lexical_analysis.html#numeric-literals
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178 " https://docs.python.org/3/reference/lexical_analysis.html#numeric-literals
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179 if !exists("python_no_number_highlight")
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180 " numbers (including longs and complex)
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181 syn match pythonNumber "\<0[oO]\=\o\+[Ll]\=\>"
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182 syn match pythonNumber "\<0[xX]\x\+[Ll]\=\>"
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183 syn match pythonNumber "\<0[bB][01]\+[Ll]\=\>"
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184 syn match pythonNumber "\<\%([1-9]\d*\|0\)[Ll]\=\>"
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185 syn match pythonNumber "\<\d\+[jJ]\>"
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186 syn match pythonNumber "\<\d\+[eE][+-]\=\d\+[jJ]\=\>"
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187 syn match pythonNumber
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188 \ "\<\d\+\.\%([eE][+-]\=\d\+\)\=[jJ]\=\%(\W\|$\)\@="
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189 syn match pythonNumber
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190 \ "\%(^\|\W\)\zs\d*\.\d\+\%([eE][+-]\=\d\+\)\=[jJ]\=\>"
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191 endif
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192
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193 " Group the built-ins in the order in the 'Python Library Reference' for
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194 " easier comparison.
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195 " https://docs.python.org/2/library/constants.html
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196 " https://docs.python.org/3/library/constants.html
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197 " http://docs.python.org/2/library/functions.html
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198 " http://docs.python.org/3/library/functions.html
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199 " http://docs.python.org/2/library/functions.html#non-essential-built-in-functions
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200 " http://docs.python.org/3/library/functions.html#non-essential-built-in-functions
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201 " Python built-in functions are in alphabetical order.
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202 if !exists("python_no_builtin_highlight")
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203 " built-in constants
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204 " 'False', 'True', and 'None' are also reserved words in Python 3
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205 syn keyword pythonBuiltin False True None
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206 syn keyword pythonBuiltin NotImplemented Ellipsis __debug__
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207 " built-in functions
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208 syn keyword pythonBuiltin abs all any bin bool bytearray callable chr
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209 syn keyword pythonBuiltin classmethod compile complex delattr dict dir
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210 syn keyword pythonBuiltin divmod enumerate eval filter float format
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211 syn keyword pythonBuiltin frozenset getattr globals hasattr hash
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212 syn keyword pythonBuiltin help hex id input int isinstance
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213 syn keyword pythonBuiltin issubclass iter len list locals map max
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214 syn keyword pythonBuiltin memoryview min next object oct open ord pow
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215 syn keyword pythonBuiltin print property range repr reversed round set
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216 syn keyword pythonBuiltin setattr slice sorted staticmethod str
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217 syn keyword pythonBuiltin sum super tuple type vars zip __import__
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218 " Python 2 only
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219 syn keyword pythonBuiltin basestring cmp execfile file
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220 syn keyword pythonBuiltin long raw_input reduce reload unichr
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221 syn keyword pythonBuiltin unicode xrange
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222 " Python 3 only
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223 syn keyword pythonBuiltin ascii bytes exec
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224 " non-essential built-in functions; Python 2 only
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225 syn keyword pythonBuiltin apply buffer coerce intern
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226 " avoid highlighting attributes as builtins
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227 syn match pythonAttribute /\.\h\w*/hs=s+1
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228 \ contains=ALLBUT,pythonBuiltin,pythonFunction,pythonAsync
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229 \ transparent
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230 endif
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231
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232 " From the 'Python Library Reference' class hierarchy at the bottom.
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233 " http://docs.python.org/2/library/exceptions.html
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234 " http://docs.python.org/3/library/exceptions.html
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235 if !exists("python_no_exception_highlight")
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236 " builtin base exceptions (used mostly as base classes for other exceptions)
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237 syn keyword pythonExceptions BaseException Exception
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238 syn keyword pythonExceptions ArithmeticError BufferError
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239 syn keyword pythonExceptions LookupError
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240 " builtin base exceptions removed in Python 3
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241 syn keyword pythonExceptions EnvironmentError StandardError
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242 " builtin exceptions (actually raised)
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243 syn keyword pythonExceptions AssertionError AttributeError
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244 syn keyword pythonExceptions EOFError FloatingPointError GeneratorExit
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245 syn keyword pythonExceptions ImportError IndentationError
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246 syn keyword pythonExceptions IndexError KeyError KeyboardInterrupt
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247 syn keyword pythonExceptions MemoryError NameError NotImplementedError
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248 syn keyword pythonExceptions OSError OverflowError ReferenceError
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249 syn keyword pythonExceptions RuntimeError StopIteration SyntaxError
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250 syn keyword pythonExceptions SystemError SystemExit TabError TypeError
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251 syn keyword pythonExceptions UnboundLocalError UnicodeError
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252 syn keyword pythonExceptions UnicodeDecodeError UnicodeEncodeError
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253 syn keyword pythonExceptions UnicodeTranslateError ValueError
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254 syn keyword pythonExceptions ZeroDivisionError
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255 " builtin OS exceptions in Python 3
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256 syn keyword pythonExceptions BlockingIOError BrokenPipeError
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257 syn keyword pythonExceptions ChildProcessError ConnectionAbortedError
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258 syn keyword pythonExceptions ConnectionError ConnectionRefusedError
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259 syn keyword pythonExceptions ConnectionResetError FileExistsError
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260 syn keyword pythonExceptions FileNotFoundError InterruptedError
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261 syn keyword pythonExceptions IsADirectoryError NotADirectoryError
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262 syn keyword pythonExceptions PermissionError ProcessLookupError
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263 syn keyword pythonExceptions RecursionError StopAsyncIteration
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264 syn keyword pythonExceptions TimeoutError
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265 " builtin exceptions deprecated/removed in Python 3
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266 syn keyword pythonExceptions IOError VMSError WindowsError
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267 " builtin warnings
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268 syn keyword pythonExceptions BytesWarning DeprecationWarning FutureWarning
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269 syn keyword pythonExceptions ImportWarning PendingDeprecationWarning
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270 syn keyword pythonExceptions RuntimeWarning SyntaxWarning UnicodeWarning
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271 syn keyword pythonExceptions UserWarning Warning
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272 " builtin warnings in Python 3
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273 syn keyword pythonExceptions ResourceWarning
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274 endif
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275
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276 if exists("python_space_error_highlight")
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277 " trailing whitespace
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278 syn match pythonSpaceError display excludenl "\s\+$"
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279 " mixed tabs and spaces
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280 syn match pythonSpaceError display " \+\t"
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281 syn match pythonSpaceError display "\t\+ "
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282 endif
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283
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284 " Do not spell doctests inside strings.
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285 " Notice that the end of a string, either ''', or """, will end the contained
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286 " doctest too. Thus, we do *not* need to have it as an end pattern.
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287 if !exists("python_no_doctest_highlight")
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288 if !exists("python_no_doctest_code_highlight")
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289 syn region pythonDoctest
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290 \ start="^\s*>>>\s" end="^\s*$"
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291 \ contained contains=ALLBUT,pythonDoctest,pythonFunction,@Spell
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292 syn region pythonDoctestValue
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293 \ start=+^\s*\%(>>>\s\|\.\.\.\s\|"""\|'''\)\@!\S\++ end="$"
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294 \ contained
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295 else
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296 syn region pythonDoctest
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297 \ start="^\s*>>>" end="^\s*$"
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298 \ contained contains=@NoSpell
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299 endif
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300 endif
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301
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302 " Sync at the beginning of class, function, or method definition.
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303 syn sync match pythonSync grouphere NONE "^\%(def\|class\)\s\+\h\w*\s*[(:]"
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304
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305 " The default highlight links. Can be overridden later.
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306 hi def link pythonStatement Statement
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307 hi def link pythonConditional Conditional
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308 hi def link pythonRepeat Repeat
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309 hi def link pythonOperator Operator
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310 hi def link pythonException Exception
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311 hi def link pythonInclude Include
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312 hi def link pythonAsync Statement
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313 hi def link pythonDecorator Define
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314 hi def link pythonDecoratorName Function
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315 hi def link pythonFunction Function
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316 hi def link pythonComment Comment
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317 hi def link pythonTodo Todo
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318 hi def link pythonString String
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319 hi def link pythonRawString String
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320 hi def link pythonQuotes String
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321 hi def link pythonTripleQuotes pythonQuotes
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322 hi def link pythonEscape Special
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323 if !exists("python_no_number_highlight")
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324 hi def link pythonNumber Number
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325 endif
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326 if !exists("python_no_builtin_highlight")
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327 hi def link pythonBuiltin Function
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328 endif
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329 if !exists("python_no_exception_highlight")
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330 hi def link pythonExceptions Structure
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331 endif
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332 if exists("python_space_error_highlight")
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333 hi def link pythonSpaceError Error
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334 endif
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335 if !exists("python_no_doctest_highlight")
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336 hi def link pythonDoctest Special
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337 hi def link pythonDoctestValue Define
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338 endif
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339
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340 let b:current_syntax = "python"
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341
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342 let &cpo = s:cpo_save
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343 unlet s:cpo_save
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344
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345 " vim:set sw=2 sts=2 ts=8 noet:
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