anchor.diff:               grammar = [{name = "e"
                            args = []
                            body = PSeq ([{omit = false
  -                                        rule = PToken ("N", (16, 17))
  +                                        rule = PToken ("N", (16, 17, ""))
                                           binding = None
                                           checker = None}; {omit = false
  -                                                          rule = PToken ("G", (27, 28))
  +                                                          rule = PToken ("G", (27, 28, ""))
                                                             binding = None
                                                             checker = None}],None)
                            _public = true
  
positive.code:                 grammar = [{name = "e"
                              args = []
                              body = PSeq ([{omit = false
                                             rule = PToken ("R", (28, 29))
                                             binding = None
                                             checker = None}],None)
                              _public = true
  
negative.code:              grammar = [{name = "e"
                           args = []
                           body = PSeq ([{omit = false
                                          rule = PToken ("N", (16, 17, ""))
                                          binding = None
                                          checker = None}; {omit = false
                                                            rule = PToken ("H", (38, 39, ""))
                                                            binding = None
                                                            checker = None}],None)
                           _public = true
  