Function format_to

extlibs/fmt/include/fmt/format.h:3373–3379

template <typename S, typename... Args, std::size_t SIZE = inline_buffer_size,
          typename Char = enable_if_t<internal::is_string<S>::value, char_t<S>>>
inline typename buffer_context<Char>::iterator format_to(
    basic_memory_buffer<Char, SIZE>& buf, const S& format_str, Args&&... args) {
  internal::check_format_string<Args...>(format_str);
  using context = buffer_context<Char>;
  return internal::vformat_to(buf, to_string_view(format_str),
                              make_format_args<context>(args...));
}

template <typename OutputIt, typename Char = char>
using format_context_t = basic_format_context<OutputIt, Char>;