Function template prev_grapheme

Function template prev_grapheme_break

boost::text::v1::prev_grapheme_break

Synopsis

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


template<code_point_range R> 
  std::ranges::borrowed_iterator_t< R > 
  prev_grapheme_break(R && r, std::ranges::iterator_t< R > it);

Description

Finds the nearest grapheme break at or before before it. If it == range.begin(), that is returned. Otherwise, the first code point of the grapheme that it is within is returned (even if it is already at the first code point of a grapheme).