`std::filesystem::path` [passes](http://eel.is/c++draft/filesystems#fs.path.construct-6) `std::locale` objects as opposed to `codecvt` facets. We can support both, using `std::use_facet<codecvt_type>(loc)`.
std::filesystem::pathpassesstd::localeobjects as opposed tocodecvtfacets. We can support both, usingstd::use_facet<codecvt_type>(loc).