Comment #3 on issue 2476 by [email protected]: using blanks in -doptions values http://code.google.com/p/lilypond/issues/detail?id=2476
It does not work in all OSs (in fact, it does not work on any shell I know except Windows cmd.exe), and I have _no_ idea whatsoever why you should think so. Most certainly the link to the discussion you give does not contain _anything_ to suggest that.
