class OpenStruct

def method_missing(mid, *args) # :nodoc:

:nodoc: 
def method_missing(mid, *args) # :nodoc:
  mname = mid.id2name
  len = args.length
  if mname.chomp!('=')
    if len != 1
      raise ArgumentError, "wrong number of arguments (#{len} for 1)", caller(1)
    end
    modifiable[new_ostruct_member(mname)] = args[0]
  elsif len == 0
    @table[mid]
  else
    err = NoMethodError.new "undefined method `#{mid}' for #{self}", mid, args
    err.set_backtrace caller(1)
    raise err
  end
end