namespace boost {
  namespace text {
    template<code_point_iter I, std::sentinel_for< I > S, 
             searcher_break_func< I, S > BreakFunc> 
      struct boyer_moore_collation_searcher;
    template<code_point_iter I, std::sentinel_for< I > S, 
             searcher_break_func< I, S > BreakFunc> 
      struct boyer_moore_horspool_collation_searcher;
    template<code_point_iter I, std::sentinel_for< I > S = I> 
      struct collation_search_result;
    struct cp_break;
    template<code_point_iter I, std::sentinel_for< I > S, 
             searcher_break_func< I, S > BreakFunc> 
      struct simple_collation_searcher;
    namespace v1 {
      template<code_point_iter I, std::sentinel_for< I > S, 
               searcher< I, S > Searcher> 
        collation_search_result< I > collation_search(I, S, Searcher const &);
      template<code_point_range R, searcher< I, S > Searcher> 
        unspecified collation_search(R &&, Searcher const &);
      template<code_point_iter I, std::sentinel_for< I > S> 
        unspecified make_simple_collation_searcher(I, S, 
                                                   collation_table const &, 
                                                   collation_flags = collation_flags::none);
      template<code_point_iter I, std::sentinel_for< I > S, 
               searcher_break_func BreakFunc> 
        unspecified make_simple_collation_searcher(I, S, BreakFunc, 
                                                   collation_table const &, 
                                                   collation_flags = collation_flags::none);
      template<code_point_range R> 
        unspecified make_simple_collation_searcher(R &&, 
                                                   collation_table const &, 
                                                   collation_flags = collation_flags::none);
      template<code_point_range R, searcher_break_func BreakFunc> 
        unspecified make_simple_collation_searcher(R &&, BreakFunc, 
                                                   collation_table const &, 
                                                   collation_flags = collation_flags::none);
      template<code_point_iter I, std::sentinel_for< I > S> 
        unspecified make_boyer_moore_horspool_collation_searcher(I, S, 
                                                                 collation_table const &, 
                                                                 collation_flags = collation_flags::none);
      template<code_point_iter I, std::sentinel_for< I > S, 
               searcher_break_func BreakFunc> 
        unspecified make_boyer_moore_horspool_collation_searcher(I, S, 
                                                                 BreakFunc, 
                                                                 collation_table const &, 
                                                                 collation_flags = collation_flags::none);
      template<code_point_range R> 
        unspecified make_boyer_moore_horspool_collation_searcher(R &&, 
                                                                 collation_table const &, 
                                                                 collation_flags = collation_flags::none);
      template<code_point_range R, searcher_break_func BreakFunc> 
        unspecified make_boyer_moore_horspool_collation_searcher(R &&, 
                                                                 BreakFunc, 
                                                                 collation_table const &, 
                                                                 collation_flags = collation_flags::none);
      template<code_point_iter I, std::sentinel_for< I > S> 
        unspecified make_boyer_moore_collation_searcher(I, S, 
                                                        collation_table const &, 
                                                        collation_flags = collation_flags::none);
      template<code_point_iter I, std::sentinel_for< I > S, 
               searcher_break_func BreakFunc> 
        unspecified make_boyer_moore_collation_searcher(I, S, BreakFunc, 
                                                        collation_table const &, 
                                                        collation_flags = collation_flags::none);
      template<code_point_range R> 
        unspecified make_boyer_moore_collation_searcher(R &&, 
                                                        collation_table const &, 
                                                        collation_flags = collation_flags::none);
      template<code_point_range R, searcher_break_func BreakFunc> 
        unspecified make_boyer_moore_collation_searcher(R &&, BreakFunc, 
                                                        collation_table const &, 
                                                        collation_flags = collation_flags::none);
      template<code_point_iter I1, std::sentinel_for< I1 > S1, 
               code_point_iter I2, std::sentinel_for< I2 > S2, 
               searcher_break_func BreakFunc> 
        collation_search_result< I1 > 
        collation_search(I1, S1, I2, S2, BreakFunc, collation_table const &, 
                         collation_flags = collation_flags::none);
      template<code_point_range R1, code_point_range R2, 
               searcher_break_func BreakFunc> 
        unspecified collation_search(R1 &&, R2 &&, BreakFunc, 
                                     collation_table const &, 
                                     collation_flags = collation_flags::none);
      template<code_point_iter I1, std::sentinel_for< I1 > S1, 
               code_point_iter I2, std::sentinel_for< I2 > S2> 
        collation_search_result< I1 > 
        collation_search(I1, S1, I2, S2, collation_table const &, 
                         collation_flags = collation_flags::none);
      template<code_point_range R1, code_point_range R2> 
        unspecified collation_search(R1 &&, R2 &&, collation_table const &, 
                                     collation_flags = collation_flags::none);
    }
  }
}namespace std {
  namespace ranges {
  }
}