boost::unicode::compose
// In header: <boost/unicode/compose.hpp> template<typename Range, typename OutputIterator, typename... T> OutputIterator compose(const Range & range, OutputIterator out, const T & ...);
Eagerly evaluates boost::unicode::composer until the whole input range range has been treated, copying the result to out and returning the past-the-end output iterator.
boost::unicode::composer
range
out