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+" Vim syntax file
+" Language: Yacc
+" Maintainer: Dr. Charles E. Campbell, Jr. <NdrOchipS@PcampbellAfamily.Mbiz>
+" Last Change: Nov 18, 2002
+" Version: 2
+" URL: http://www.erols.com/astronaut/vim/index.html#vimlinks_syntax
+"
+" Option:
+" yacc_uses_cpp : if this variable exists, then C++ is loaded rather than C
+
+" For version 5.x: Clear all syntax items
+" For version 6.x: Quit when a syntax file was already loaded
+if version < 600
+ syntax clear
+elseif exists("b:current_syntax")
+ finish
+endif
+
+" Read the C syntax to start with
+if version >= 600
+ if exists("yacc_uses_cpp")
+ runtime! syntax/cpp.vim
+ else
+ runtime! syntax/c.vim
+ endif
+elseif exists("yacc_uses_cpp")
+ so <sfile>:p:h/cpp.vim
+else
+ so <sfile>:p:h/c.vim
+endif
+
+" Clusters
+syn cluster yaccActionGroup contains=yaccDelim,cInParen,cTodo,cIncluded,yaccDelim,yaccCurlyError,yaccUnionCurly,yaccUnion,cUserLabel,cOctalZero,cCppOut2,cCppSkip,cErrInBracket,cErrInParen,cOctalError,cCommentStartError,cParenError
+syn cluster yaccUnionGroup contains=yaccKey,cComment,yaccCurly,cType,cStructure,cStorageClass,yaccUnionCurly
+
+" Yacc stuff
+syn match yaccDelim "^\s*[:|;]"
+syn match yaccOper "@\d\+"
+
+syn match yaccKey "^\s*%\(token\|type\|left\|right\|start\|ident\|nonassoc\)\>"
+syn match yaccKey "\s%\(prec\|expect\)\>"
+syn match yaccKey "\$\(<[a-zA-Z_][a-zA-Z_0-9]*>\)\=[\$0-9]\+"
+syn keyword yaccKeyActn yyerrok yyclearin
+
+syn match yaccUnionStart "^%union" skipwhite skipnl nextgroup=yaccUnion
+syn region yaccUnion contained matchgroup=yaccCurly start="{" matchgroup=yaccCurly end="}" contains=@yaccUnionGroup
+syn region yaccUnionCurly contained matchgroup=yaccCurly start="{" matchgroup=yaccCurly end="}" contains=@yaccUnionGroup
+syn match yaccBrkt contained "[<>]"
+syn match yaccType "<[a-zA-Z_][a-zA-Z0-9_]*>" contains=yaccBrkt
+syn match yaccDefinition "^[A-Za-z][A-Za-z0-9_]*[ \t]*:"
+
+" special Yacc separators
+syn match yaccSectionSep "^[ \t]*%%"
+syn match yaccSep "^[ \t]*%{"
+syn match yaccSep "^[ \t]*%}"
+
+" I'd really like to highlight just the outer {}. Any suggestions???
+syn match yaccCurlyError "[{}]"
+syn region yaccAction matchgroup=yaccCurly start="{" end="}" contains=ALLBUT,@yaccActionGroup
+
+
+" Define the default highlighting.
+" For version 5.7 and earlier: only when not done already
+" For version 5.8 and later: only when an item doesn't have highlighting yet
+if version >= 508 || !exists("did_yacc_syn_inits")
+ if version < 508
+ let did_yacchdl_syn_inits = 1
+ command -nargs=+ HiLink hi link <args>
+ else
+ command -nargs=+ HiLink hi def link <args>
+ endif
+
+ " Internal yacc highlighting links
+ HiLink yaccBrkt yaccStmt
+ HiLink yaccKey yaccStmt
+ HiLink yaccOper yaccStmt
+ HiLink yaccUnionStart yaccKey
+
+ " External yacc highlighting links
+ HiLink yaccCurly Delimiter
+ HiLink yaccCurlyError Error
+ HiLink yaccDefinition Function
+ HiLink yaccDelim Function
+ HiLink yaccKeyActn Special
+ HiLink yaccSectionSep Todo
+ HiLink yaccSep Delimiter
+ HiLink yaccStmt Statement
+ HiLink yaccType Type
+
+ " since Bram doesn't like my Delimiter :|
+ HiLink Delimiter Type
+
+ delcommand HiLink
+endif
+
+let b:current_syntax = "yacc"
+
+" vim: ts=15