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1 " Vim syntax file
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2 " Language: Erlang (http://www.erlang.org)
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3 " Maintainer: Csaba Hoch <csaba.hoch@gmail.com>
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4 " Last Update: 2013-Jul-25
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5 " License: Vim license
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6 " URL: https://github.com/hcs42/vim-erlang
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7
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8 " Acknowledgements: This script was originally created by Kresimir Marzic [1].
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9 " The script was then revamped by Csaba Hoch [2]. During the revamp, the new
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10 " highlighting style and some code was taken from the Erlang syntax script
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11 " that is part of vimerl [3], created by Oscar Hellström [4] and improved by
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12 " Ricardo Catalinas Jiménez [5].
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13
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14 " [1]: Kreąimir Marľić (Kresimir Marzic) <kmarzic@fly.srk.fer.hr>
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15 " [2]: Csaba Hoch <csaba.hoch@gmail.com>
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16 " [3]: https://github.com/jimenezrick/vimerl
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17 " [4]: Oscar Hellström <oscar@oscarh.net> (http://oscar.hellstrom.st)
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18 " [5]: Ricardo Catalinas Jiménez <jimenezrick@gmail.com>
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19
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20 " Customization:
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21 "
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22 " To use the old highlighting style, add this to your .vimrc:
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23 "
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24 " let g:erlang_old_style_highlight = 1
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25 "
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26 " To highlight further module attributes, add them to
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27 " ~/.vim/after/syntax/erlang.vim:
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28 "
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29 " syn keyword erlangAttribute myattr1 myattr2 contained
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30
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31 " For version 5.x: Clear all syntax items
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32 " For version 6.x: Quit when a syntax file was already loaded
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33 if version < 600
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34 syntax clear
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35 elseif exists("b:current_syntax")
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36 finish
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37 endif
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38
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39 let s:cpo_save = &cpo
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40 set cpo&vim
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41
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42 " Case sensitive
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43 syn case match
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44
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45 if version >= 600
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46 setlocal iskeyword+=$,@-@
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47 endif
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48
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49 " Comments
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50 syn match erlangComment '%.*$' contains=erlangCommentAnnotation,erlangTodo
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51 syn match erlangCommentAnnotation ' \@<=@\%(clear\|docfile\|end\|headerfile\|todo\|TODO\|type\|author\|copyright\|doc\|reference\|see\|since\|title\|version\|deprecated\|hidden\|private\|equiv\|spec\|throws\)' contained
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52 syn match erlangCommentAnnotation /`[^']*'/ contained
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53 syn keyword erlangTodo TODO FIXME XXX contained
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54 syn match erlangShebang '^#!.*'
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55
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56 " Numbers (minimum base is 2, maximum is 36.)
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57 syn match erlangNumberInteger '\<\d\+\>'
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58 syn match erlangNumberInteger '\<\%([2-9]\|[12]\d\|3[0-6]\)\+#[[:alnum:]]\+\>'
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59 syn match erlangNumberFloat '\<\d\+\.\d\+\%([eE][+-]\=\d\+\)\=\>'
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60
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61 " Strings, atoms, characters
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62 syn region erlangString start=/"/ end=/"/ contains=erlangStringModifier
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63 syn region erlangQuotedAtom start=/'/ end=/'/ contains=erlangQuotedAtomModifier
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64 syn match erlangStringModifier '\~\a\|\\\%(\o\{1,3}\|x\x\x\|x{\x\+}\|\^.\|.\)' contained
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65 syn match erlangQuotedAtomModifier '\~\a\|\\\%(\o\{1,3}\|x\x\x\|x{\x\+}\|\^.\|.\)' contained
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66 syn match erlangModifier '\$\%([^\\]\|\\\%(\o\{1,3}\|x\x\x\|x{\x\+}\|\^.\|.\)\)'
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67
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68 " Operators, separators
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69 syn match erlangOperator '==\|=:=\|/=\|=/=\|<\|=<\|>\|>=\|++\|--\|=\|!\|<-\|+\|-\|\*\|\/'
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70 syn keyword erlangOperator div rem or xor bor bxor bsl bsr and band not bnot andalso orelse
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71 syn match erlangBracket '{\|}\|\[\|]\||\|||'
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72 syn match erlangPipe '|'
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73 syn match erlangRightArrow '->'
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74
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75 " Atoms, function calls (order is important)
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76 syn match erlangAtom '\<\l[[:alnum:]_@]*' contains=erlangBoolean
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77 syn keyword erlangBoolean true false contained
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78 syn match erlangLocalFuncCall '\<\a[[:alnum:]_@]*\>\%(\%(\s\|\n\|%.*\n\)*(\)\@=' contains=erlangBIF
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79 syn match erlangLocalFuncRef '\<\a[[:alnum:]_@]*\>\%(\%(\s\|\n\|%.*\n\)*/\)\@='
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80 syn match erlangGlobalFuncCall '\<\%(\a[[:alnum:]_@]*\%(\s\|\n\|%.*\n\)*\.\%(\s\|\n\|%.*\n\)*\)*\a[[:alnum:]_@]*\%(\s\|\n\|%.*\n\)*:\%(\s\|\n\|%.*\n\)*\a[[:alnum:]_@]*\>\%(\%(\s\|\n\|%.*\n\)*(\)\@=' contains=erlangComment
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81 syn match erlangGlobalFuncRef '\<\%(\a[[:alnum:]_@]*\%(\s\|\n\|%.*\n\)*\.\%(\s\|\n\|%.*\n\)*\)*\a[[:alnum:]_@]*\%(\s\|\n\|%.*\n\)*:\%(\s\|\n\|%.*\n\)*\a[[:alnum:]_@]*\>\%(\%(\s\|\n\|%.*\n\)*/\)\@=' contains=erlangComment
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82
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83 " Variables, macros, records
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84 syn match erlangVariable '\<[A-Z_][[:alnum:]_@]*'
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85 syn match erlangMacro '??\=[[:alnum:]_@]\+'
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86 syn match erlangMacro '\%(-define(\)\@<=[[:alnum:]_@]\+'
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87 syn match erlangRecord '#\s*\l[[:alnum:]_@]*'
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88
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89 " Bitstrings
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90 syn match erlangBitType '\%(\/\%(\s\|\n\|%.*\n\)*\)\@<=\%(integer\|float\|binary\|bytes\|bitstring\|bits\|binary\|utf8\|utf16\|utf32\|signed\|unsigned\|big\|little\|native\|unit\)\%(\%(\s\|\n\|%.*\n\)*-\%(\s\|\n\|%.*\n\)*\%(integer\|float\|binary\|bytes\|bitstring\|bits\|binary\|utf8\|utf16\|utf32\|signed\|unsigned\|big\|little\|native\|unit\)\)*' contains=erlangComment
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91
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92 " Constants and Directives
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93 syn match erlangUnknownAttribute '^\s*-\%(\s\|\n\|%.*\n\)*\l[[:alnum:]_@]*' contains=erlangComment
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94 syn match erlangAttribute '^\s*-\%(\s\|\n\|%.*\n\)*\%(behaviou\=r\|compile\|export\(_type\)\=\|file\|import\|module\|author\|copyright\|doc\|vsn\|on_load\)\>' contains=erlangComment
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95 syn match erlangInclude '^\s*-\%(\s\|\n\|%.*\n\)*\%(include\|include_lib\)\>' contains=erlangComment
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96 syn match erlangRecordDef '^\s*-\%(\s\|\n\|%.*\n\)*record\>' contains=erlangComment
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97 syn match erlangDefine '^\s*-\%(\s\|\n\|%.*\n\)*\%(define\|undef\)\>' contains=erlangComment
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98 syn match erlangPreCondit '^\s*-\%(\s\|\n\|%.*\n\)*\%(ifdef\|ifndef\|else\|endif\)\>' contains=erlangComment
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99 syn match erlangType '^\s*-\%(\s\|\n\|%.*\n\)*\%(spec\|type\|opaque\|callback\)\>' contains=erlangComment
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100
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101 " Keywords
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102 syn keyword erlangKeyword after begin case catch cond end fun if let of query
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103 syn keyword erlangKeyword receive when try
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104
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105 " Build-in-functions (BIFs)
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106 syn keyword erlangBIF abs alive apply atom_to_binary atom_to_list contained
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107 syn keyword erlangBIF binary_part binary_to_atom contained
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108 syn keyword erlangBIF binary_to_existing_atom binary_to_float contained
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109 syn keyword erlangBIF binary_to_integer bitstring_to_list contained
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110 syn keyword erlangBIF binary_to_list binary_to_term bit_size contained
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111 syn keyword erlangBIF byte_size check_old_code check_process_code contained
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112 syn keyword erlangBIF concat_binary date delete_module demonitor contained
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113 syn keyword erlangBIF disconnect_node element erase error exit contained
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114 syn keyword erlangBIF float float_to_binary float_to_list contained
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115 syn keyword erlangBIF garbage_collect get get_keys group_leader contained
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116 syn keyword erlangBIF halt hd integer_to_binary integer_to_list contained
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117 syn keyword erlangBIF iolist_to_binary iolist_size is_alive contained
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118 syn keyword erlangBIF is_atom is_binary is_bitstring is_boolean contained
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119 syn keyword erlangBIF is_float is_function is_integer is_list contained
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120 syn keyword erlangBIF is_number is_pid is_port is_process_alive contained
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121 syn keyword erlangBIF is_record is_reference is_tuple length link contained
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122 syn keyword erlangBIF list_to_atom list_to_binary contained
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123 syn keyword erlangBIF list_to_bitstring list_to_existing_atom contained
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124 syn keyword erlangBIF list_to_float list_to_integer list_to_pid contained
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125 syn keyword erlangBIF list_to_tuple load_module make_ref max min contained
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126 syn keyword erlangBIF module_loaded monitor monitor_node node contained
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127 syn keyword erlangBIF nodes now open_port pid_to_list port_close contained
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128 syn keyword erlangBIF port_command port_connect pre_loaded contained
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129 syn keyword erlangBIF process_flag process_flag process_info contained
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130 syn keyword erlangBIF process purge_module put register registered contained
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131 syn keyword erlangBIF round self setelement size spawn spawn_link contained
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132 syn keyword erlangBIF spawn_monitor spawn_opt split_binary contained
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133 syn keyword erlangBIF statistics term_to_binary throw time tl contained
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134 syn keyword erlangBIF trunc tuple_size tuple_to_list unlink contained
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135 syn keyword erlangBIF unregister whereis contained
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136
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137 " Sync at the beginning of functions: if this is not used, multiline string
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138 " are not always recognized, and the indentation script cannot use the
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139 " "searchpair" (because it would not always skip strings and comments when
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140 " looking for keywords and opening parens/brackets).
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141 syn sync match erlangSync grouphere NONE "^[a-z]\s*("
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142 let b:erlang_syntax_synced = 1
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143
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144 " Define the default highlighting. See ":help group-name" for the groups and
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145 " their colors.
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146
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147 let s:old_style = (exists("g:erlang_old_style_highlight") &&
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148 \g:erlang_old_style_highlight == 1)
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149
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150 " For version 5.7 and earlier: only when not done already
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151 " For version 5.8 and later: only when an item doesn't have highlighting yet
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152 if version >= 508 || !exists("did_erlang_inits")
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153 if version < 508
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154 let did_erlang_inits = 1
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155 command -nargs=+ HiLink hi link <args>
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156 else
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157 command -nargs=+ HiLink hi def link <args>
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158 endif
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159
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160 " Comments
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161 HiLink erlangComment Comment
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162 HiLink erlangCommentAnnotation Special
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163 HiLink erlangTodo Todo
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164 HiLink erlangShebang Comment
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165
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166 " Numbers
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167 HiLink erlangNumberInteger Number
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168 HiLink erlangNumberFloat Float
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169
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170 " Strings, atoms, characters
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171 HiLink erlangString String
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172
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173 if s:old_style
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174 HiLink erlangQuotedAtom Type
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175 else
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176 HiLink erlangQuotedAtom String
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177 endif
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178
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179 HiLink erlangStringModifier Special
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180 HiLink erlangQuotedAtomModifier Special
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181 HiLink erlangModifier Special
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182
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183 " Operators, separators
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184 HiLink erlangOperator Operator
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185 HiLink erlangRightArrow Operator
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186 if s:old_style
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187 HiLink erlangBracket Normal
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188 HiLink erlangPipe Normal
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189 else
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190 HiLink erlangBracket Delimiter
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191 HiLink erlangPipe Delimiter
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192 endif
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193
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194 " Atoms, functions, variables, macros
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195 if s:old_style
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196 HiLink erlangAtom Normal
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197 HiLink erlangLocalFuncCall Normal
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198 HiLink erlangLocalFuncRef Normal
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199 HiLink erlangGlobalFuncCall Function
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200 HiLink erlangGlobalFuncRef Function
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201 HiLink erlangVariable Normal
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202 HiLink erlangMacro Normal
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203 HiLink erlangRecord Normal
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204 else
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205 HiLink erlangAtom String
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206 HiLink erlangLocalFuncCall Normal
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207 HiLink erlangLocalFuncRef Normal
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208 HiLink erlangGlobalFuncCall Normal
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209 HiLink erlangGlobalFuncRef Normal
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210 HiLink erlangVariable Identifier
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211 HiLink erlangMacro Macro
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212 HiLink erlangRecord Structure
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213 endif
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214
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215 " Bitstrings
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216 if !s:old_style
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217 HiLink erlangBitType Type
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218 endif
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219
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220 " Constants and Directives
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221 if s:old_style
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222 HiLink erlangAttribute Type
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223 HiLink erlangMacroDef Type
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224 HiLink erlangUnknownAttribute Normal
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225 HiLink erlangInclude Type
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226 HiLink erlangRecordDef Type
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227 HiLink erlangDefine Type
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228 HiLink erlangPreCondit Type
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229 HiLink erlangType Type
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230 else
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231 HiLink erlangAttribute Keyword
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232 HiLink erlangMacroDef Macro
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233 HiLink erlangUnknownAttribute Normal
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234 HiLink erlangInclude Include
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235 HiLink erlangRecordDef Keyword
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236 HiLink erlangDefine Define
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237 HiLink erlangPreCondit PreCondit
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238 HiLink erlangType Type
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239 endif
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240
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241 " Keywords
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242 HiLink erlangKeyword Keyword
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243
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244 " Build-in-functions (BIFs)
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245 HiLink erlangBIF Function
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246
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247 if s:old_style
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248 HiLink erlangBoolean Statement
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249 HiLink erlangExtra Statement
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250 HiLink erlangSignal Statement
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251 else
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252 HiLink erlangBoolean Boolean
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253 HiLink erlangExtra Statement
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254 HiLink erlangSignal Statement
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255 endif
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256
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257 delcommand HiLink
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258 endif
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259
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260 let b:current_syntax = "erlang"
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261
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262 let &cpo = s:cpo_save
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263 unlet s:cpo_save
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264
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265 " vim: sw=2 et
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