Valid C++

auto my_coroutine = [] do -> std::future<int> {
int i = ([<-]std::foo()).size();
return i [<-]std::bar();
}

Removing #include will never happen.
Even if headers go extinct, its used for
#including arbitrary text data files: example->

char* pass=
#include "password.txt"
;
int a[]={
#include "array.data"
}