Is the last read byte matches the Char production?

Property definitions

saxophonit $ XophonLexer :: is_xml_char
	# Is the last read byte matches the `Char` production?
	fun is_xml_char:Bool do
		# TODO: Handle code points above 0x7F.
		return last_char >= 32 or
				last_char == 9 or
				last_char == 10
	end
lib/saxophonit/lexer.nit:61,2--67,4