In Windows the regular paths (
C:\foo) are supported by all programs,
but have lots of bizarre restrictions for backwards compatibility with MS-DOS.
There are also Windows NT UNC paths (
\\?\C:\foo), which are more robust and with fewer gotchas,
but are rarely supported by Windows programs. Even Microsoft's own!
This crate converts Windows UNC paths to the MS-DOS-compatible format whenever possible, but leaves UNC paths as-is when they can't be unambiguously expressed in a simpler way. This allows legacy programs to access all paths they can possibly access, and doesn't break any paths for UNC-aware programs.
In Rust the worst UNC offender is the
fs::canonicalize() function. This crate provides
a drop-in replacement for it that returns paths you'd expect.
On non-Windows platforms these functions leave paths unmodified, so it's safe to use them unconditionally for all platforms.