boost::text::v1::words
// 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> unspecified words(I first, S last, WordPropFunc word_prop = WordPropFunc{}, WordBreakFunc word_break = WordBreakFunc{});