/foo/..              -> /            <- Fixed
/foo/../bar          -> /bar         <- Still works
foo/..               ->              <- Should be . (?)
foo/../bar           -> bar          <- Still works
..                   ->              <- Should be ..
../foo               -> foo          <- Should be ../foo
../foo/bar           -> foo/bar      <- Should be ../foo/bar
foo/bar/../..        ->              <- Should be . (?)
/foo/bar/../..       -> /            <- Fixed
/foo/bar/../../moo   -> /moo         <- Still works
{...}/etc/passwd     -> /etc/passwd  <- Still works