old_contents: from som.primitives.primitives import Primitives
  from som.vmobjects.primitive   import Primitive
  
  
  def _asString(ivkbl, frame, interpreter):
      rcvr = frame.pop()
      frame.push(interpreter.get_universe().new_string(rcvr.get_embedded_string()))
  
  
  def _equals(ivkbl, frame, interpreter):
      op1 = frame.pop()
      op2 = frame.pop()  # rcvr
      universe = interpreter.get_universe()
      if op1 == op2:
          frame.push(universe.trueObject)
      else:
          frame.push(universe.falseObject)
  
  
  class SymbolPrimitives(Primitives):
  
      def install_primitives(self):
          self._install_instance_primitive(Primitive("asString", self._universe,
                                                     _asString))
          self._install_instance_primitive(Primitive("=", self._universe, _equals), False)
  
new_contents: from som.primitives.primitives import Primitives
  from som.vmobjects.primitive   import Primitive
  
  
  def _asString(ivkbl, frame, interpreter):
      rcvr = frame.pop()
      frame.push(interpreter.get_universe().new_string(rcvr.get_embedded_string()))
  
  
  def _equals(ivkbl, frame, interpreter):
      op1 = frame.pop()
      op2 = frame.pop()  # rcvr
      universe = interpreter.get_universe()
      if op1 is op2:
          frame.push(universe.trueObject)
      else:
          frame.push(universe.falseObject)
  
  
  class SymbolPrimitives(Primitives):
  
      def install_primitives(self):
          self._install_instance_primitive(Primitive("asString", self._universe,
                                                     _asString))
          self._install_instance_primitive(Primitive("=", self._universe, _equals), False)
  
subject: Fix Symbol equality to be reference equal