# File rexml/source.rb, line 81
  def encoding(str)
			if str=~/^\376\377/
				'UTF16'  #unicode big endian
			elsif str=~/^\377\376/
				'UNILE' #unicode litle endian
			elsif str=~/([\300-\377][\200-\277])/  
				#not a guaranteed test won't detect random pairs
				'UTF8'
			else
				'ASC'
			end
		end