Take this nice path: /tmp (note the leading slash). This is an absolute path on Unix derivates but a drive-relative path on a Windows box. Drive-relative paths are resolved by prepending the drive of the current directory, not the entire current directory.
This notation of a drive-relative path is not well-known, even among Windows users, and in particular not easy going for cross-platform Java tools. A Java developer usually assumes that a path is either (directory-)relative or absolute.
To avoid unnecessary complications as seen on our own multi-OS CI grid (cf. dev@ thread CI Grid, Windows and Paths) and as reported by users (e.g.
MECLIPSE-404), the core should not only align directory-relative paths but also resolve drive-relative paths.