module REXML
	module XMLTokens
		NCNAME_STR= '[\w_:][-\w\d._]*'
		NAME_STR= "(?:#{NCNAME_STR}:)?#{NCNAME_STR}"

		NAMECHAR = '[-\w\d\._:]'
		NAME = "([\\w_:]#{NAMECHAR}*)"
		NMTOKEN = "(?:#{NAMECHAR})+"
		NMTOKENS = "#{NMTOKEN}(\\s+#{NMTOKEN})*"
		REFERENCE = "(?:&#{NAME};|&#\\d+;|&#x[0-9a-fA-F]+;)"
		#REFERENCE = "(?:#{ENTITYREF}|#{CHARREF})"
		#ENTITYREF = "&#{NAME};"
		#CHARREF = "&#\\d+;|&#x[0-9a-fA-F]+;"
	end
end
