encoding=

# File lib/rexml/encoding.rb, line 6
    def encoding=(encoding)
      encoding = encoding.name if encoding.is_a?(Encoding)
      if encoding.is_a?(String)
        original_encoding = encoding
        encoding = find_encoding(encoding)
        unless encoding
          raise ArgumentError, "Bad encoding name #{original_encoding}"
        end
      end
      return false if defined?(@encoding) and encoding == @encoding
      if encoding
        @encoding = encoding.upcase
      else
        @encoding = 'UTF-8'
      end
      true
    end