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20753
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1 " Vim syntax file
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2 " Language: Elm
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3 " Maintainer: Andreas Scharf <as@99n.de>
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4 " Original Author: Joseph Hager <ajhager@gmail.com>
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5 " Copyright: Joseph Hager <ajhager@gmail.com>
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6 " License: BSD3
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7 " Latest Revision: 2020-05-29
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8
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9 if exists('b:current_syntax')
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10 finish
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11 endif
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12
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13 " Keywords
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14 syn keyword elmConditional else if of then case
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15 syn keyword elmAlias alias
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16 syn keyword elmTypedef contained type port
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17 syn keyword elmImport exposing as import module where
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18
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19 " Operators
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20 " elm/core
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21 syn match elmOperator contained "\(<|\||>\|||\|&&\|==\|/=\|<=\|>=\|++\|::\|+\|-\|*\|/\|//\|^\|<>\|>>\|<<\|<\|>\|%\)"
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22 " elm/parser
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23 syn match elmOperator contained "\(|.\||=\)"
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24 " elm/url
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25 syn match elmOperator contained "\(</>\|<?>\)"
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26
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27 " Types
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28 syn match elmType "\<[A-Z][0-9A-Za-z_-]*"
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29 syn keyword elmNumberType number
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30
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31 " Modules
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32 syn match elmModule "\<\([A-Z][0-9A-Za-z_'-\.]*\)\+\.[A-Za-z]"me=e-2
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33 syn match elmModule "^\(module\|import\)\s\+[A-Z][0-9A-Za-z_'-\.]*\(\s\+as\s\+[A-Z][0-9A-Za-z_'-\.]*\)\?\(\s\+exposing\)\?" contains=elmImport
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34
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35 " Delimiters
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36 syn match elmDelimiter "[,;]"
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37 syn match elmBraces "[()[\]{}]"
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38
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39 " Functions
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40 syn match elmTupleFunction "\((,\+)\)"
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41
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42 " Comments
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43 syn keyword elmTodo TODO FIXME XXX contained
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44 syn match elmLineComment "--.*" contains=elmTodo,@spell
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45 syn region elmComment matchgroup=elmComment start="{-|\=" end="-}" contains=elmTodo,elmComment,@spell fold
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46
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47 " Strings
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48 syn match elmStringEscape "\\u[0-9a-fA-F]\{4}" contained
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49 syn match elmStringEscape "\\[nrfvbt\\\"]" contained
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50 syn region elmString start="\"" skip="\\\"" end="\"" contains=elmStringEscape,@spell
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51 syn region elmTripleString start="\"\"\"" skip="\\\"" end="\"\"\"" contains=elmStringEscape,@spell
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52 syn match elmChar "'[^'\\]'\|'\\.'\|'\\u[0-9a-fA-F]\{4}'"
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53
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54 " Lambda
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55 syn region elmLambdaFunc start="\\"hs=s+1 end="->"he=e-2
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56
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57 " Debug
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58 syn match elmDebug "Debug.\(log\|todo\|toString\)"
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59
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60 " Numbers
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61 syn match elmInt "-\?\<\d\+\>"
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62 syn match elmFloat "-\?\(\<\d\+\.\d\+\>\)"
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63
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64 " Identifiers
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65 syn match elmTopLevelDecl "^\s*[a-zA-Z][a-zA-z0-9_]*\('\)*\s\+:\(\r\n\|\r\|\n\|\s\)\+" contains=elmOperator
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66 syn match elmFuncName /^\l\w*/
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67
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68 " Folding
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69 syn region elmTopLevelTypedef start="type" end="\n\(\n\n\)\@=" contains=ALL fold
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70 syn region elmTopLevelFunction start="^[a-zA-Z].\+\n[a-zA-Z].\+=" end="^\(\n\+\)\@=" contains=ALL fold
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71 syn region elmCaseBlock matchgroup=elmCaseBlockDefinition start="^\z\(\s\+\)\<case\>" end="^\z1\@!\W\@=" end="\(\n\n\z1\@!\)\@=" end="\n\z1\@!\(\n\n\)\@=" contains=ALL fold
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72 syn region elmCaseItemBlock start="^\z\(\s\+\).\+->$" end="^\z1\@!\W\@=" end="\(\n\n\z1\@!\)\@=" end="\(\n\z1\S\)\@=" contains=ALL fold
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73 syn region elmLetBlock matchgroup=elmLetBlockDefinition start="\<let\>" end="\<in\>" contains=ALL fold
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74
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75 hi def link elmFuncName Function
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76 hi def link elmCaseBlockDefinition Conditional
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77 hi def link elmCaseBlockItemDefinition Conditional
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78 hi def link elmLetBlockDefinition TypeDef
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79 hi def link elmTopLevelDecl Function
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80 hi def link elmTupleFunction Normal
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81 hi def link elmTodo Todo
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82 hi def link elmComment Comment
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83 hi def link elmLineComment Comment
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84 hi def link elmString String
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85 hi def link elmTripleString String
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86 hi def link elmChar String
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87 hi def link elmStringEscape Special
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88 hi def link elmInt Number
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89 hi def link elmFloat Float
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90 hi def link elmDelimiter Delimiter
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91 hi def link elmBraces Delimiter
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92 hi def link elmTypedef TypeDef
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93 hi def link elmImport Include
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94 hi def link elmConditional Conditional
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95 hi def link elmAlias Delimiter
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96 hi def link elmOperator Operator
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97 hi def link elmType Type
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98 hi def link elmNumberType Identifier
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99 hi def link elmLambdaFunc Function
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100 hi def link elmDebug Debug
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101 hi def link elmModule Type
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102
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103 syn sync minlines=500
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104
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105 let b:current_syntax = 'elm'
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