anchor.diff:                  "String-Spec::implode"
                   "String-Spec::explode"
                   "String-Spec::|!length|"
  -                "String-Spec::|!@-2|"
  +                "String-Spec::@-2"
                   "String-Spec::|!@|"
                   "String-Spec::sub-2"
                   "String-Spec::sub"
  
positive.code:       (append '("STRING-SPEC::implode"
                  "STRING-SPEC::explode"
                  "STRING-SPEC::|!length|"
                  "STRING-SPEC::|!@-2|"
                  "STRING-SPEC::|!@|"
                  "STRING-SPEC::sub-2"
                  "STRING-SPEC::sub"
                  "STRING-SPEC::subFromTo-3"
                  "STRING-SPEC::subFromTo"
                  "STRING-SPEC::++-2"
                  "STRING-SPEC::!++"
                  "STRING-SPEC::|!forall?-1-1|"
                  "STRING-SPEC::|!forall?|"
                  "STRING-SPEC::|!exists?-1-1|"
                  "STRING-SPEC::|!exists?|"
                  "STRING-SPEC::map-1-1"
                  "STRING-SPEC::|!map|"
                  "STRING-SPEC::flatten"
  
negative.code:                 "String-Spec::subFromTo"
                  "String-Spec::++-2"
                  "String-Spec::!++"
                  "String-Spec::forall?-1-1"
                  "String-Spec::forall?"
                  "String-Spec::exists?-1-1"
                  "String-Spec::exists?"
                  "String-Spec::map-1-1"
                  "String-Spec::|!map|"
                  "String-Spec::flatten"
  