/usr/share/vim/vim80/syntax/jgraph.vim is in vim-runtime 2:8.0.1453-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 | " Vim syntax file
" Language: jgraph (graph plotting utility)
" Maintainer: Jonas Munsin jmunsin@iki.fi
" Last Change: 2003 May 04
" this syntax file is not yet complete
" quit when a syntax file was already loaded
if exists("b:current_syntax")
finish
endif
syn case match
" comments
syn region jgraphComment start="(\* " end=" \*)"
syn keyword jgraphCmd newcurve newgraph marktype
syn keyword jgraphType xaxis yaxis
syn keyword jgraphType circle box diamond triangle x cross ellipse
syn keyword jgraphType xbar ybar text postscript eps none general
syn keyword jgraphType solid dotted dashed longdash dotdash dodotdash
syn keyword jgraphType dotdotdashdash pts
"integer number, or floating point number without a dot. - or no -
syn match jgraphNumber "\<-\=\d\+\>"
"floating point number, with dot - or no -
syn match jgraphNumber "\<-\=\d\+\.\d*\>"
"floating point number, starting with a dot - or no -
syn match jgraphNumber "\-\=\.\d\+\>"
" Define the default highlighting.
" Only when an item doesn't have highlighting yet
hi def link jgraphComment Comment
hi def link jgraphCmd Identifier
hi def link jgraphType Type
hi def link jgraphNumber Number
let b:current_syntax = "jgraph"
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