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" Vim syntax file
" Language: Graphviz program
" Maintainer: Matthew Fernandez <matthew.fernandez@gmail.com>
" Last Change: Tue, 28 Jul 2020 17:20:44 -0700
if exists("b:current_syntax")
finish
endif
let s:cpo_save = &cpo
set cpo&vim
syn keyword gvArg ARGC ARGV
syn keyword gvBeg BEGIN BEG_G N E END END_G
syn keyword gvFunc
\ graph fstsubg isDirect isStrict isSubg nEdges nNodes nxtsubg subg
\ degreeOf fstnode indegreeOf isNode isSubnode node nxtnode nxtnode_sg
\ outDegreeOf subnode
\ edge edge_sg fstedge fstedge_sg fstin fstin_sg fstout fstout_sg isEdge
\ isEdge_sg isSubedge nxtedge nxtedge_sg nxtin nxtin_sg nxtout nxtout_sg opp
\ subedge
\ freadG fwriteG readG write[] writeG
\ aget aset clone cloneG compOf copy[] copyA delete[] fstAttr getDflt hasAttr
\ induce isAttr isIn kindOf lock[] nxtAttr setDflt
\ canon gsub html index ishtml length llOf match[] rindex split[] sprintf
\ sscanf strcmp sub substr tokens tolower toupper urOf xOf yOf
\ closeF openF print[] printf scanf readL
\ atan2 cos exp log MAX MIN pow sin[] sqrt
\ in[] unset
\ colorx exit[] rand srand system
syn keyword gvCons
\ NULL TV_bfs TV_dfs TV_en TV_flat TV_fwd TV_ne TV_prepostdfs TV_prepostfwd
\ TV_prepostrev TV_postdfs TV_postfwd tv_postrev TV_rev
syn keyword gvType char double float int long unsigned void
\ string
\ edge_t graph_t node_t obj_t
syn match gvVar
\ "\$\(\(F\|G\|NG\|O\|T\|tgtname\|tvedge\|tvnext\|tvroot\|tvtype\)\>\)\?\(\<\)\@!"
syn keyword gvWord break continue else for forr if return switch while
" numbers adapted from c.vim's cNumbers and friends
syn match gvNums transparent "\<\d\|\.\d" contains=gvNumber,gvFloat,gvOctal
syn match gvNumber contained "\d\+\(u\=l\{0,2}\|ll\=u\)\>"
syn match gvNumber contained "0x\x\+\(u\=l\{0,2}\|ll\=u\)\>"
syn match gvOctal contained "0\o\+\(u\=l\{0,2}\|ll\=u\)\>" contains=gvOctalZero
syn match gvOctalZero contained "\<0"
syn match gvFloat contained "\d\+f"
syn match gvFloat contained "\d\+\.\d*\(e[-+]\=\d\+\)\=[fl]\="
syn match gvFloat contained "\.\d\+\(e[-+]\=\d\+\)\=[fl]\=\>"
syn match gvFloat contained "\d\+e[-+]\=\d\+[fl]\=\>"
syn region gvString start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=gvFormat,gvSpecial extend
syn region gvString start="'" skip="\\\\\|\\'" end="'" contains=gvFormat,gvSpecial extend
" adapted from c.vim's cFormat for c_no_c99
syn match gvFormat "%\(\d\+\$\)\=[-+' #0*]*\(\d*\|\*\|\*\d\+\$\)\(\.\(\d*\|\*\|\*\d\+\$\)\)\=\([hlL]\|ll\)\=\([bdiuoxXDOUfeEgGcCsSpn]\|\[\^\=.[^]]*\]\)" contained
syn match gvSpecial "\\." contained
syn region gvCComment start="//" skip="\\$" end="$" keepend
syn region gvCPPComment start="#" skip="\\$" end="$" keepend
syn region gvCXXComment start="/\*" end="\*/" fold
hi def link gvArg Identifier
hi def link gvBeg Keyword
hi def link gvFloat Number
hi def link gvFunc Identifier
hi def link gvCons Number
hi def link gvNumber Number
hi def link gvType Type
hi def link gvVar Statement
hi def link gvWord Keyword
hi def link gvString String
hi def link gvFormat Special
hi def link gvSpecial Special
hi def link gvCComment Comment
hi def link gvCPPComment Comment
hi def link gvCXXComment Comment
let b:current_syntax = "gvpr"
let &cpo = s:cpo_save
unlet s:cpo_save
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