Ben Boeckel via Modules <modules_at_[hidden]> writes:

> This is fine because `import <hello/core.hpp>;` is semantically the
> same as `#include <hello/core.hpp>` *for the purposes of preprocessing*.

I don't think this is correct. There is at least the difference
in macro isolation. Consider:

#define NDEBUG
#include <hello/core.hpp> // Affected by NDEBUG.

And:

#define NDEBUG
import <hello/core.hpp>; // Isolated from NDEBUG.