" Vim syntax file
" Language: Relax NG compact syntax
" Maintainer: Nikolai Weibull <[email protected]>
" Latest Revision: 2007-06-17

if exists("b:current_syntax")
finish
endif

let s:cpo_save = &cpo
set cpo&vim

setlocal iskeyword+=-,.

syn keyword rncTodo contained TODO FIXME XXX NOTE

syn region rncComment display oneline start='^\s*#' end='$'
\ contains=rncTodo,@Spell

syn match rncOperator display '[-|,&+?*~]'
syn match rncOperator display '\%(|&\)\=='
syn match rncOperator display '>>'

syn match rncNamespace display '\<\k\+:'

syn match rncQuoted display '\\\k\+\>'

syn match rncSpecial display '\\x{\x\+}'

syn region rncAnnotation transparent start='\[' end='\]'
\ contains=ALLBUT,rncComment,rncTodo

syn region rncLiteral display oneline start=+"+ end=+"+
\ contains=rncSpecial
syn region rncLiteral display oneline start=+'+ end=+'+
syn region rncLiteral display oneline start=+"""+ end=+"""+
\ contains=rncSpecial
syn region rncLiteral display oneline start=+'''+ end=+'''+

syn match rncDelimiter display '[{},()]'

syn keyword rncKeyword datatypes default div empty external grammar
syn keyword rncKeyword include inherit list mixed name namespace
syn keyword rncKeyword notAllowed parent start string text token

syn match rncIdentifier display '\k\+\_s*\%(=\|&=\||=\)\@='
\ nextgroup=rncOperator
syn keyword rncKeyword element attribute
\ nextgroup=rncIdName skipwhite skipempty
syn match rncIdName contained '\k\+'

hi def link rncTodo Todo
hi def link rncComment Comment
hi def link rncOperator Operator
hi def link rncNamespace Identifier
hi def link rncQuoted Special
hi def link rncSpecial SpecialChar
hi def link rncAnnotation Special
hi def link rncLiteral String
hi def link rncDelimiter Delimiter
hi def link rncKeyword Keyword
hi def link rncIdentifier Identifier
hi def link rncIdName Identifier

let b:current_syntax = "rnc"

let &cpo = s:cpo_save
unlet s:cpo_save