anchor.diff:                      Any ->
                           ct:pal("Failed: Stacktrace ~p~n",
                                  [util:get_stacktrace()]),
  -                        ?ct_fail("~s evaluated to \"~w\" which is "
  +                        ?ct_fail("~s evaluated to \"~.0p\" which is "
                                  "not the expected ~s~n",
                                  [??Actual, Any, ??ExpectedPattern])
                   end
  
positive.code:                                     after
                                          0 -> no_message
                                      end,
                                  ?ct_fail("expected message ~s but got \"~w\"~n", [??MsgPattern, ActualMessage])
                          end
                      MsgPattern -> ok
                  after
  
negative.code:                             after
                                  0 -> no_message
                              end,
                          ?ct_fail("expected message ~s but got \"~.0p\"~n", [??MsgPattern, ActualMessage])
                  end
          end()).
  -define(expect_message(MsgPattern), ?expect_message_timeout(MsgPattern, 1000)).
  