There is no way to create a PathBuf from an OsString without copying

[lilyball]

PathBuf doesn't expose any methods that can be used to create a PathBuf from an OsString (or anything convertible to an OsString) without copying. This seems like an unnecessary limitation.

/cc @aturon

[aturon]

Yep, just an oversight.

[LukasKalbertodt]

Just add fn from_os_string(_: OsString) -> PathBuf to PathBuf? That seems too easy...

[alexcrichton]

I think that this would probably be done by changing the AsOsStr bound on PathBuf::new instead to IntoOsString as one may also wish to construct a PathBuf from a String for example.

[retep998]

cc me. I need this.

[lilyball]

Nominating, I think this should be done before 1.0 as it may be a confusing omission.

[pnkfelix]

1.0 beta, P-backcompat-libs (but only b/c @aturon said he's got a patch ready to go)