# File lib/fakefs/file.rb, line 608
    def read(length = nil, buf = '')
      read_buf = super(length, buf)
      # change to binary only for ruby 1.9.3
      if read_buf.respond_to?(:force_encoding) && binary_mode?
        read_buf = read_buf.force_encoding('ASCII-8BIT')
      end
      read_buf
    end