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1 " Vim syntax file
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2 " Language: VHDL
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3 " Maintainer: Czo <Olivier.Sirol@lip6.fr>
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4 " Credits: Stephan Hegel <stephan.hegel@snc.siemens.com.cn>
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5 " $Id$
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6
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7 " VHSIC Hardware Description Language
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8 " Very High Scale Integrated Circuit
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9
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10 " For version 5.x: Clear all syntax items
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11 " For version 6.x: Quit when a syntax file was already loaded
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12 if version < 600
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13 syntax clear
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14 elseif exists("b:current_syntax")
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15 finish
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16 endif
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17
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18 " This is not VHDL. I use the C-Preprocessor cpp to generate different binaries
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19 " from one VHDL source file. Unfortunately there is no preprocessor for VHDL
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20 " available. If you don't like this, please remove the following lines.
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21 syn match cDefine "^#ifdef[ ]\+[A-Za-z_]\+"
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22 syn match cDefine "^#endif"
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23
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24 " case is not significant
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25 syn case ignore
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26
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27 " VHDL keywords
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28 syn keyword vhdlStatement access after alias all assert
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29 syn keyword vhdlStatement architecture array attribute
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30 syn keyword vhdlStatement begin block body buffer bus
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31 syn keyword vhdlStatement case component configuration constant
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32 syn keyword vhdlStatement disconnect downto
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33 syn keyword vhdlStatement elsif end entity exit
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34 syn keyword vhdlStatement file for function
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35 syn keyword vhdlStatement generate generic group guarded
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36 syn keyword vhdlStatement impure in inertial inout is
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37 syn keyword vhdlStatement label library linkage literal loop
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38 syn keyword vhdlStatement map
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39 syn keyword vhdlStatement new next null
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40 syn keyword vhdlStatement of on open others out
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41 syn keyword vhdlStatement package port postponed procedure process pure
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42 syn keyword vhdlStatement range record register reject report return
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43 syn keyword vhdlStatement select severity signal shared
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44 syn keyword vhdlStatement subtype
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45 syn keyword vhdlStatement then to transport type
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46 syn keyword vhdlStatement unaffected units until use
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47 syn keyword vhdlStatement variable wait when while with
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48 syn keyword vhdlStatement note warning error failure
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49
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50 " Special match for "if" and "else" since "else if" shouldn't be highlighted.
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51 " The right keyword is "elsif"
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52 syn match vhdlStatement "\<\(if\|else\)\>"
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53 syn match vhdlNone "\<else\s\+if\>$"
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54 syn match vhdlNone "\<else\s\+if\>\s"
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55
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56 " Predifined VHDL types
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57 syn keyword vhdlType bit bit_vector
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58 syn keyword vhdlType character boolean integer real time
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59 syn keyword vhdlType string severity_level
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60 " Predifined standard ieee VHDL types
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61 syn keyword vhdlType positive natural signed unsigned
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62 syn keyword vhdlType line text
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63 syn keyword vhdlType std_logic std_logic_vector
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64 syn keyword vhdlType std_ulogic std_ulogic_vector
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65 " Predefined non standard VHDL types for Mentor Graphics Sys1076/QuickHDL
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66 syn keyword vhdlType qsim_state qsim_state_vector
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67 syn keyword vhdlType qsim_12state qsim_12state_vector
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68 syn keyword vhdlType qsim_strength
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69 " Predefined non standard VHDL types for Alliance VLSI CAD
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70 syn keyword vhdlType mux_bit mux_vector reg_bit reg_vector wor_bit wor_vector
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71
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72 " array attributes
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73 syn match vhdlAttribute "\'high"
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74 syn match vhdlAttribute "\'left"
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75 syn match vhdlAttribute "\'length"
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76 syn match vhdlAttribute "\'low"
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77 syn match vhdlAttribute "\'range"
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78 syn match vhdlAttribute "\'reverse_range"
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79 syn match vhdlAttribute "\'right"
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80 syn match vhdlAttribute "\'ascending"
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81 " block attributes
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82 syn match vhdlAttribute "\'behaviour"
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83 syn match vhdlAttribute "\'structure"
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84 syn match vhdlAttribute "\'simple_name"
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85 syn match vhdlAttribute "\'instance_name"
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86 syn match vhdlAttribute "\'path_name"
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87 syn match vhdlAttribute "\'foreign"
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88 " signal attribute
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89 syn match vhdlAttribute "\'active"
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90 syn match vhdlAttribute "\'delayed"
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91 syn match vhdlAttribute "\'event"
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92 syn match vhdlAttribute "\'last_active"
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93 syn match vhdlAttribute "\'last_event"
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94 syn match vhdlAttribute "\'last_value"
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95 syn match vhdlAttribute "\'quiet"
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96 syn match vhdlAttribute "\'stable"
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97 syn match vhdlAttribute "\'transaction"
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98 syn match vhdlAttribute "\'driving"
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99 syn match vhdlAttribute "\'driving_value"
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100 " type attributes
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101 syn match vhdlAttribute "\'base"
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102 syn match vhdlAttribute "\'high"
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103 syn match vhdlAttribute "\'left"
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104 syn match vhdlAttribute "\'leftof"
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105 syn match vhdlAttribute "\'low"
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106 syn match vhdlAttribute "\'pos"
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107 syn match vhdlAttribute "\'pred"
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108 syn match vhdlAttribute "\'rightof"
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109 syn match vhdlAttribute "\'succ"
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110 syn match vhdlAttribute "\'val"
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111 syn match vhdlAttribute "\'image"
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112 syn match vhdlAttribute "\'value"
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113
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114 syn keyword vhdlBoolean true false
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115
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116 " for this vector values case is significant
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117 syn case match
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118 " Values for standard VHDL types
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119 syn match vhdlVector "\'[0L1HXWZU\-\?]\'"
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120 " Values for non standard VHDL types qsim_12state for Mentor Graphics Sys1076/QuickHDL
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121 syn keyword vhdlVector S0S S1S SXS S0R S1R SXR S0Z S1Z SXZ S0I S1I SXI
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122 syn case ignore
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123
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124 syn match vhdlVector "B\"[01_]\+\""
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125 syn match vhdlVector "O\"[0-7_]\+\""
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126 syn match vhdlVector "X\"[0-9a-f_]\+\""
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127 syn match vhdlCharacter "'.'"
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128 syn region vhdlString start=+"+ end=+"+
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129
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130 " floating numbers
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131 syn match vhdlNumber "-\=\<\d\+\.\d\+\(E[+\-]\=\d\+\)\>"
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132 syn match vhdlNumber "-\=\<\d\+\.\d\+\>"
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133 syn match vhdlNumber "0*2#[01_]\+\.[01_]\+#\(E[+\-]\=\d\+\)\="
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134 syn match vhdlNumber "0*16#[0-9a-f_]\+\.[0-9a-f_]\+#\(E[+\-]\=\d\+\)\="
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135 " integer numbers
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136 syn match vhdlNumber "-\=\<\d\+\(E[+\-]\=\d\+\)\>"
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137 syn match vhdlNumber "-\=\<\d\+\>"
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138 syn match vhdlNumber "0*2#[01_]\+#\(E[+\-]\=\d\+\)\="
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139 syn match vhdlNumber "0*16#[0-9a-f_]\+#\(E[+\-]\=\d\+\)\="
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140 " operators
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141 syn keyword vhdlOperator and nand or nor xor xnor
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142 syn keyword vhdlOperator rol ror sla sll sra srl
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143 syn keyword vhdlOperator mod rem abs not
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144 syn match vhdlOperator "[&><=:+\-*\/|]"
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145 syn match vhdlSpecial "[().,;]"
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146 " time
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147 syn match vhdlTime "\<\d\+\s\+\(\([fpnum]s\)\|\(sec\)\|\(min\)\|\(hr\)\)\>"
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148 syn match vhdlTime "\<\d\+\.\d\+\s\+\(\([fpnum]s\)\|\(sec\)\|\(min\)\|\(hr\)\)\>"
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149
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150 syn match vhdlComment "--.*$"
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151 " syn match vhdlGlobal "[\'$#~!%@?\^\[\]{}\\]"
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152
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153 " Define the default highlighting.
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154 " For version 5.7 and earlier: only when not done already
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155 " For version 5.8 and later: only when an item doesn't have highlighting yet
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156 if version >= 508 || !exists("did_vhdl_syntax_inits")
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157 if version < 508
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158 let did_vhdl_syntax_inits = 1
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159 command -nargs=+ HiLink hi link <args>
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160 else
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161 command -nargs=+ HiLink hi def link <args>
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162 endif
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163
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164 HiLink cDefine PreProc
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165 HiLink vhdlSpecial Special
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166 HiLink vhdlStatement Statement
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167 HiLink vhdlCharacter String
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168 HiLink vhdlString String
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169 HiLink vhdlVector String
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170 HiLink vhdlBoolean String
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171 HiLink vhdlComment Comment
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172 HiLink vhdlNumber String
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173 HiLink vhdlTime String
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174 HiLink vhdlType Type
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175 HiLink vhdlOperator Type
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176 HiLink vhdlGlobal Error
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177 HiLink vhdlAttribute Type
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178
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179 delcommand HiLink
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180 endif
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181
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182 let b:current_syntax = "vhdl"
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183
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184 " vim: ts=8
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