Class LinePtr

Fleece/Support/diff_match_patch.hh:636–641

   */
 protected:
  struct LinePtr : std::pair<typename string_t::const_pointer, size_t> {
    LinePtr() =default;
    LinePtr(typename string_t::const_pointer p, size_t n) : std::pair<typename string_t::const_pointer, size_t>(p, n) {}
    bool operator<(const LinePtr& p) const
      { return this->second < p.second? true : this->second > p.second? false : string_t::traits_type::compare(this->first, p.first, this->second) < 0; }
  };
  struct Lines : std::vector<LinePtr> { string_t text1, text2; };

  static void diff_linesToChars(string_t &text1, string_t &text2, Lines& lineArray) {