new file mode 100644
--- /dev/null
+++ b/runtime/syntax/racc.vim
@@ -0,0 +1,138 @@
+" Vim default file
+" Language:         Racc input file
+" Maintainer:       Nikolai Weibull <nikolai+work.vim@bitwi.se>
+" Latest Revision:  2005-06-29
+
+if exists("b:current_syntax")
+  finish
+endif
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+syn keyword raccTodo        contained TODO FIXME XXX NOTE
+
+syn region  raccComment     matchgroup=raccComment start='/\*' end='\*/'
+                            \ contains=raccTodo,@Spell
+syn region  raccComment     matchgroup=raccComment start='#' end='$'
+                            \ contains=raccTodo,@Spell
+
+syn region  raccClass       transparent matchgroup=raccKeyword
+                            \ start='\<class\>' end='\<rule\>'he=e-4
+                            \ contains=raccComment,raccPrecedence,
+                            \ raccTokenDecl,raccExpect,raccOptions,raccConvert,
+                            \ raccStart,
+
+syn region  raccPrecedence  transparent matchgroup=raccKeyword
+                            \ start='\<prechigh\>' end='\<preclow\>'
+                            \ contains=raccComment,raccPrecSpec
+
+syn keyword raccPrecSpec    contained nonassoc left right
+                            \ nextgroup=raccPrecToken,raccPrecString skipwhite
+                            \ skipnl
+
+syn match   raccPrecToken   contained '\<\u[A-Z0-9]*\>'
+                            \ nextgroup=raccPrecToken,raccPrecString skipwhite
+                            \ skipnl
+
+syn region  raccPrecString  matchgroup=raccPrecString start=+"+
+                            \ skip=+\\\\\|\\"+ end=+"+
+                            \ contains=raccSpecial
+                            \ nextgroup=raccPrecToken,raccPrecString skipwhite
+                            \ skipnl
+syn region  raccPrecString  matchgroup=raccPrecString start=+'+
+                            \ skip=+\\\\\|\\'+ end=+'+ contains=raccSpecial
+                            \ nextgroup=raccPrecToken,raccPrecString skipwhite
+                            \ skipnl
+
+syn keyword raccTokenDecl   contained token
+                            \ nextgroup=raccTokenR skipwhite skipnl
+
+syn match   raccTokenR      contained '\<\u[A-Z0-9]*\>'
+                            \ nextgroup=raccTokenR skipwhite skipnl
+
+syn keyword raccExpect      contained expect
+                            \ nextgroup=raccNumber skipwhite skipnl
+
+syn match   raccNumber      contained '\<\d\+\>'
+
+syn keyword raccOptions     contained options
+                            \ nextgroup=raccOptionsR skipwhite skipnl
+
+syn keyword raccOptionsR    contained omit_action_call result_var
+                            \ nextgroup=raccOptionsR skipwhite skipnl
+
+syn region  raccConvert     transparent contained matchgroup=raccKeyword
+                            \ start='\<convert\>' end='\<end\>'
+                            \ contains=raccComment,raccConvToken skipwhite
+                            \ skipnl
+
+syn match   raccConvToken   contained '\<\u[A-Z0-9]*\>'
+                            \ nextgroup=raccString skipwhite skipnl
+
+syn keyword raccStart       contained start
+                            \ nextgroup=raccTargetS skipwhite skipnl
+
+syn match   raccTargetS     contained '\<\l[a-z0-9]*\>'
+
+syn match   raccSpecial     contained '\\["'\\]'
+
+syn region  raccString      matchgroup=raccString start=+"+ skip=+\\\\\|\\"+
+                            \ end=+"+ contains=raccSpecial
+syn region  raccString      matchgroup=raccString start=+'+ skip=+\\\\\|\\'+
+                            \ end=+'+ contains=raccSpecial
+
+syn region  raccRules       transparent matchgroup=raccKeyword start='\<rule\>'
+                            \ end='\<end\>' contains=raccComment,raccString,
+                            \ raccNumber,raccToken,raccTarget,raccDelimiter,
+                            \ raccAction
+
+syn match   raccTarget      contained '\<\l[a-z0-9]*\>'
+
+syn match   raccDelimiter   contained '[:|]'
+
+syn match   raccToken       contained '\<\u[A-Z0-9]*\>'
+
+syn include @raccRuby       syntax/ruby.vim
+
+syn region  raccAction      transparent matchgroup=raccDelimiter
+                            \ start='{' end='}' contains=@raccRuby
+
+syn region  raccHeader      transparent matchgroup=raccPreProc
+                            \ start='^---- header.*' end='^----'he=e-4
+                            \ contains=@raccRuby
+
+syn region  raccInner       transparent matchgroup=raccPreProc
+                            \ start='^---- inner.*' end='^----'he=e-4
+                            \ contains=@raccRuby
+
+syn region  raccFooter      transparent matchgroup=raccPreProc
+                            \ start='^---- footer.*' end='^----'he=e-4
+                            \ contains=@raccRuby
+
+hi def link raccTodo        Todo
+hi def link raccComment     Comment
+hi def link raccPrecSpec    Type
+hi def link raccPrecToken   raccToken
+hi def link raccPrecString  raccString
+hi def link raccTokenDecl   Keyword
+hi def link raccToken       Identifier
+hi def link raccTokenR      raccToken
+hi def link raccExpect      Keyword
+hi def link raccNumber      Number
+hi def link raccOptions     Keyword
+hi def link raccOptionsR    Identifier
+hi def link raccConvToken   raccToken
+hi def link raccStart       Keyword
+hi def link raccTargetS     Type
+hi def link raccSpecial     special
+hi def link raccString      String
+hi def link raccTarget      Type
+hi def link raccDelimiter   Delimiter
+hi def link raccPreProc     PreProc
+hi def link raccKeyword     Keyword
+
+let b:current_syntax = "racc"
+
+let &cpo = s:cpo_save
+unlet s:cpo_save