[boost] A string_view with null-terminator guarantee?

Hi Everyone, Would Boost libraries benefit from having a string_view-like type with the guarantee that the underlying character sequence is null-terminated? This could be as yet another Boost library, or as part of Boost.Core. Maybe Boost already has such a type somewhere? The need for such a type surfaces time and again. When a library needs to be passed both const char * and std::string cheaply, only to pass it down to low-level C-libraries later. We have seen one recently during the review of Boost.Sqlite. One is again proposed for standardization: wg21.link/p3655. Regards, &rzej;