xspf ws m3u relative path

c:\d\e\z.xspf that contains file:///f.mp4

Not found c:\d\e\f.mp4 by commands:

cd c:\vlc\

vlc.exe c:\d\e\z.xspf

And played c:\d\e\f.mp4 by commands:

cd c:\d\e

c:\vlc\vlc.exe c:\d\e\z.xspf

But c:\d\e\z.m3u that contains:

#EXTM3U

#EXTINF:-1, F

f.mp4

---

Played c:\d\e\f.mp4 by commands: cd c:\vlc
vlc.exe c:\d\e\z.m3u

Please add this feature to .xspf files as it is done for .m3u files.