Method grow_buffer

ext/include/cppformat/format.h:1455–1459

Grows the buffer by n characters and returns a pointer to the newly allocated area.

  // Grows the buffer by n characters and returns a pointer to the newly
  // allocated area.
  CharPtr grow_buffer(std::size_t n) {
    std::size_t size = buffer_.size();
    buffer_.resize(size + n);
    return internal::make_ptr(&buffer_[size], n);
  }

  // Prepare a buffer for integer formatting.
  CharPtr prepare_int_buffer(unsigned num_digits,