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- " Vim syntax file
- " Language: SGN
- " Maintainer: fr33domlover <fr33domlover@riseup.net>
- " Last Change: 2015-03-30
- " Roughly based on the EBNF syntax file by Hans Fugal.
- " Bugs
- " - Multi-line rules don't work
- " Quit when a syntax file was already loaded
- if version < 600
- syntax clear
- elseif exists("b:current_syntax")
- finish
- endif
- syn match sgnNonTerminal /[a-zA-Z]/ skipwhite nextgroup=sgnSeparator
- syn match sgnSeparator "=" contained skipwhite skipempty nextgroup=sgnProduction
- syn match sgnProduction /.\+/ contained skipwhite skipempty contains=sgnOperator,sgnDelimiter,sgnTerminal,sgnExplanation,sgnComment,sgnRange,sgnOccurences,sgnUnicodeChar
- syn region sgnExplanation start=~/~ end=~/~ contained
- syn region sgnTerminal start=/"/ end=/"/ contained
- syn region sgnTerminal start=/'/ end=/'/ contained
- syn match sgnUnicodeChar /\\x[0-9a-fA-F]\+/ contained
- syn region sgnRange start=/\[/ skip=/\\\]/ end=/\]/ contained
- syn match sgnOperator /[|\-*+?!]/ contained
- syn match sgnOccurences /#[0-9]\+\(-[0-9]\+\)\?/ contained
- syn match sgnDelimiter /[()]/
- syn keyword sgnTodo TODO FIXME XXX contained
- syn match sgnComment /--.*/ contains=sgnTodo
- hi link sgnExplanation Statement
- hi link sgnNonTerminal Identifier
- hi link sgnTerminal String
- hi link sgnUnicodeChar SpecialChar
- hi link sgnRange Constant
- hi link sgnOperator Operator
- hi link sgnOccurences Number
- hi link sgnDelimiter Delimiter
- hi link sgnTodo Todo
- hi link sgnComment Comment
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