For some technical reasons I had to replicate the functionality of std::tuple in my library. (see here: https://github.com/correaa/boost-multi?tab=readme-ov-file#formatting-fmt-pretty-printing) I would be nice that the features in fmt would work on any type that has `std::get<N>`, `std::tuple_size`, etc. in their interface. That is, if a type is tuple like then it could be printed as a tuple. (This will also work on any class for which [structured binding](https://en.cppreference.com/w/cpp/language/structured_binding) is implemented). ```cpp int main() { std::tuple<int, int> t1(1, 2); fmt::print( "{}", fmt::join(t1, "x") ); // prints 1 x 2 my_tuple<int, int> t2(1, 2); fmt::print( "{}", fmt::join(t2, "x") ); // doesn't work now } ``` Here it is a godbolt example: https://godbolt.org/z/Gof6f4oaE