anchor.diff:    parseReadyForQuery(list, offset) {
       if (offset + 5 < list.length) {
         _backEndStatus = list[offset + 5];
  -      p(["_backEndStatus", _backEndStatus]);
       } else {
         throw "The BackendKeyData response was too short.";
       }
  
positive.code:       columnCount--;
        offset += 18;
      }
      fn(ff);
      return offset;
    }
  
    parseQueryResponse(list) {
  
negative.code:     return MoreSys.memchr(address, 0, len) - address;
    }
  
    parseRowDescription(list, queryResults) {
      var len = list.length;
      if (len < 7) {
        throw "RowDescription response is too short.";
  