anchor.diff:      )
       ;
   
  -CHARLITERAL
  +CHAR_LITERAL
       :   '`' ( ~ NonCharacterChars | EscapeSequence ) '`'
       ;
   
  
positive.code:     :    '`' | '\\' | '\t' | '\n' | '\f' | '\r' | '\b'
      ;
  
  QUOTEDLITERAL
      :   '\'' QuotedLiteralPart '\''
      ;
  
  
negative.code:     BASE;
      CALL_EXPR;
      CASE_LIST;
      CLASS_BODY;
      CLASS_DECL;
      CONDITION;
  