// In header: <boost/text/word_break.hpp>


template<code_point_iter I, std::sentinel_for< I > S, 
         word_prop_func WordPropFunc = word_prop_callable, 
         word_break_func WordBreakFunc = untailored_word_break> 
  utf32_view< I > 
  word(I first, I it, S last, WordPropFunc const & word_prop = WordPropFunc{}, 
       WordBreakFunc const & word_break = WordBreakFunc{});