std::filesystem::path::format

enum format {
    native_format,
    generic_format,
    auto_format
};

(since C++17)

Determines how string representations of pathnames are interpreted by the constructors of std::filesystem::path that accept strings.

Name	Explanation
`native_format`	Native pathname format
`generic_format`	Generic pathname format
`auto_format`	Implementation-defined pathname format, auto-detected where possible

On POSIX systems, there is no difference between native and generic format.