Method set_debug_format

include/fmt/base.h:2369–2371

            FMT_ENABLE_IF(U == type::string_type || U == type::cstring_type ||
                          U == type::char_type)>
  FMT_CONSTEXPR void set_debug_format(bool set = true) {
    specs_.set_type(set ? presentation_type::debug : presentation_type::none);
  }

  template <typename FormatContext>
  FMT_CONSTEXPR auto format(const T& val, FormatContext& ctx) const