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" Vim syntax file
" Language: Dot
" Filenames: *.dot
" Maintainer: Markus Mottl <markus.mottl@gmail.com>
" URL: http://www.ocaml.info/vim/syntax/dot.vim
" Last Change: 2011 May 17 - improved identifier matching + two new keywords
" 2001 May 04 - initial version
" 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
" Errors
syn match dotParErr ")"
syn match dotBrackErr "]"
syn match dotBraceErr "}"
" Enclosing delimiters
syn region dotEncl transparent matchgroup=dotParEncl start="(" matchgroup=dotParEncl end=")" contains=ALLBUT,dotParErr
syn region dotEncl transparent matchgroup=dotBrackEncl start="\[" matchgroup=dotBrackEncl end="\]" contains=ALLBUT,dotBrackErr
syn region dotEncl transparent matchgroup=dotBraceEncl start="{" matchgroup=dotBraceEncl end="}" contains=ALLBUT,dotBraceErr
" Comments
syn region dotComment start="//" end="$" contains=dotComment,dotTodo
syn region dotComment start="/\*" end="\*/" contains=dotComment,dotTodo
syn keyword dotTodo contained TODO FIXME XXX
" Strings
syn region dotString start=+"+ skip=+\\\\\|\\"+ end=+"+
" General keywords
syn keyword dotKeyword digraph node edge subgraph
" Graph attributes
syn keyword dotType center layers margin mclimit name nodesep nslimit
syn keyword dotType ordering page pagedir rank rankdir ranksep ratio
syn keyword dotType rotate size
" Node attributes
syn keyword dotType distortion fillcolor fontcolor fontname fontsize
syn keyword dotType height layer orientation peripheries regular
syn keyword dotType shape shapefile sides skew width
" Edge attributes
syn keyword dotType arrowhead arrowsize arrowtail constraint decorateP
syn keyword dotType dir headclip headlabel headport labelangle labeldistance
syn keyword dotType labelfontcolor labelfontname labelfontsize
syn keyword dotType minlen port_label_distance samehead sametail
syn keyword dotType tailclip taillabel tailport weight
" Shared attributes (graphs, nodes, edges)
syn keyword dotType color
" Shared attributes (graphs and edges)
syn keyword dotType bgcolor label URL
" Shared attributes (nodes and edges)
syn keyword dotType fontcolor fontname fontsize layer style
" Special chars
syn match dotKeyChar "="
syn match dotKeyChar ";"
syn match dotKeyChar "->"
" Identifier
syn match dotIdentifier /\<\w\+\(:\w\+\)\?\>/
" Synchronization
syn sync minlines=50
syn sync maxlines=500
" 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_dot_syntax_inits")
if version < 508
let did_dot_syntax_inits = 1
command -nargs=+ HiLink hi link <args>
else
command -nargs=+ HiLink hi def link <args>
endif
HiLink dotParErr Error
HiLink dotBraceErr Error
HiLink dotBrackErr Error
HiLink dotComment Comment
HiLink dotTodo Todo
HiLink dotParEncl Keyword
HiLink dotBrackEncl Keyword
HiLink dotBraceEncl Keyword
HiLink dotKeyword Keyword
HiLink dotType Type
HiLink dotKeyChar Keyword
HiLink dotString String
HiLink dotIdentifier Identifier
delcommand HiLink
endif
let b:current_syntax = "dot"
" vim: ts=8
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