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1 " Language: Dot
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2 " Filenames: *.dot
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3 " Maintainer: Markus Mottl <markus.mottl@gmail.com>
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4 " URL: http://www.ocaml.info/vim/syntax/dot.vim
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5 " Last Change: 2021 Mar 24 - better attr + escape string matching, new keywords (Farbod Salamat-Zadeh)
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6 " 2011 May 17 - improved identifier matching + two new keywords
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7 " 2001 May 04 - initial version
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7
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8
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9 " For version 5.x: Clear all syntax items
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10 " For version 6.x: Quit when a syntax file was already loaded
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11 if version < 600
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12 syntax clear
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13 elseif exists("b:current_syntax")
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14 finish
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15 endif
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16
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17 let s:keepcpo = &cpo
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18 set cpo&vim
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19
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20 " Errors
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21 syn match dotParErr ")"
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22 syn match dotBrackErr "]"
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23 syn match dotBraceErr "}"
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24
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25 " Enclosing delimiters
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26 syn region dotEncl transparent matchgroup=dotParEncl start="(" matchgroup=dotParEncl end=")" contains=ALLBUT,dotParErr
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27 syn region dotEncl transparent matchgroup=dotBrackEncl start="\[" matchgroup=dotBrackEncl end="\]" contains=ALLBUT,dotBrackErr
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28 syn region dotEncl transparent matchgroup=dotBraceEncl start="{" matchgroup=dotBraceEncl end="}" contains=ALLBUT,dotBraceErr
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29
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30 " Comments
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31 syn region dotComment start="//" end="$" contains=dotComment,dotTodo
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32 syn region dotComment start="/\*" end="\*/" contains=dotComment,dotTodo
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33 syn keyword dotTodo contained TODO FIXME XXX
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34
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35 " Strings
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36 syn region dotString start=+"+ skip=+\\\\\|\\"+ end=+"+
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37
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38 " Escape strings
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39 syn match dotEscString /\v\\(N|G|E|T|H|L)/ containedin=dotString
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40 syn match dotEscString /\v\\(n|l|r)/ containedin=dotString
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41
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42 " General keywords
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43 syn keyword dotKeyword graph digraph subgraph node edge strict
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44
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45 " Node, edge and graph attributes
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46 syn keyword dotType _background area arrowhead arrowsize arrowtail bb bgcolor
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47 \ center charset class clusterrank color colorscheme comment compound
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48 \ concentrate constraint Damping decorate defaultdist dim dimen dir
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49 \ diredgeconstraints distortion dpi edgehref edgetarget edgetooltip
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50 \ edgeURL epsilon esep fillcolor fixedsize fontcolor fontname fontnames
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51 \ fontpath fontsize forcelabels gradientangle group head_lp headclip
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52 \ headhref headlabel headport headtarget headtooltip headURL height href
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53 \ id image imagepath imagepos imagescale inputscale K label label_scheme
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54 \ labelangle labeldistance labelfloat labelfontcolor labelfontname
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55 \ labelfontsize labelhref labeljust labelloc labeltarget labeltooltip
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56 \ labelURL landscape layer layerlistsep layers layerselect layersep
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57 \ layout len levels levelsgap lhead lheight lp ltail lwidth margin
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58 \ maxiter mclimit mindist minlen mode model mosek newrank nodesep
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59 \ nojustify normalize notranslate nslimit nslimit1 ordering orientation
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60 \ outputorder overlap overlap_scaling overlap_shrink pack packmode pad
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61 \ page pagedir pencolor penwidth peripheries pin pos quadtree quantum
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62 \ rank rankdir ranksep ratio rects regular remincross repulsiveforce
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63 \ resolution root rotate rotation samehead sametail samplepoints scale
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64 \ searchsize sep shape shapefile showboxes sides size skew smoothing
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65 \ sortv splines start style stylesheet tail_lp tailclip tailhref
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66 \ taillabel tailport tailtarget tailtooltip tailURL target tooltip
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67 \ truecolor URL vertices viewport voro_margin weight width xdotversion
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68 \ xlabel xlp z
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69
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70 " Special chars
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71 syn match dotKeyChar "="
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72 syn match dotKeyChar ";"
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73 syn match dotKeyChar "->"
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74 syn match dotKeyChar "--"
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75
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76 " Identifier
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77 syn match dotIdentifier /\<\w\+\(:\w\+\)\?\>/
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78
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79 " Synchronization
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80 syn sync minlines=50
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81 syn sync maxlines=500
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82
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83 " Define the default highlighting.
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84 " For version 5.7 and earlier: only when not done already
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85 " For version 5.8 and later: only when an item doesn't have highlighting yet
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86 if version >= 508 || !exists("did_dot_syntax_inits")
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87 if version < 508
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88 let did_dot_syntax_inits = 1
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89 command -nargs=+ HiLink hi link <args>
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90 else
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91 command -nargs=+ HiLink hi def link <args>
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92 endif
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93
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94 HiLink dotParErr Error
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95 HiLink dotBraceErr Error
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96 HiLink dotBrackErr Error
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97
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98 HiLink dotComment Comment
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99 HiLink dotTodo Todo
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100
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101 HiLink dotParEncl Keyword
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102 HiLink dotBrackEncl Keyword
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103 HiLink dotBraceEncl Keyword
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104
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105 HiLink dotKeyword Keyword
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106 HiLink dotType Type
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107 HiLink dotKeyChar Keyword
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108
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109 HiLink dotString String
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110 HiLink dotEscString Keyword
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111 HiLink dotIdentifier Identifier
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112
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113 delcommand HiLink
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114 endif
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115
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116 let b:current_syntax = "dot"
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117
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118 let &cpo = s:keepcpo
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119 unlet s:keepcpo
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120
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121 " vim: ts=8
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