font-family-override doesn't work in Windows

[Bertalan Fodor]

V 2.7.30
Font-family-override doesn't work:

%% Generated by lilypond-book.py
%% Options: [linewidth=160\mm,alt=[image of 
music],printfilename,indent=0\mm,texidoc]

#(set! toplevel-score-handler print-score-with-defaults)
#(set! toplevel-music-handler (lambda (p m)
                               (print-score-with-defaults
                                p (scorify-music m p))))

#(ly:set-option (quote no-point-and-click))
#(define inside-lilypond-book #t)
#(define version-seen? #t)







% ****************************************************************
% Start cut-&-pastable-section 
% ****************************************************************

\paper {
 #(define dump-extents #t)
 
 linewidth = 160\mm
 indent = 0\mm
}

\layout {
 
}



% ****************************************************************
% ly snippet:
% ****************************************************************
\sourcefilename "font-family-override.ly"
\header {

 texidoc = "The default font families for text can be
 overridden with @code{make-pango-font-tree}"

}

\version "2.7.13"

\paper  {
 % change for other default global staff size. 
 myStaffSize = #20
 
 #(define fonts
   (make-pango-font-tree "Times New Roman"
                         "Nimbus Sans"
                         "Luxi Mono"

;;     "Helvetica"
;;     "Courier"

    (/ myStaffSize 20)))
}

\relative {

 c'^\markup { roman: foo \bold bla \italic bar \italic \bold baz }
 c'_\markup {
   \override #'(font-family . sans)
   {
     sans: foo \bold bla \italic bar \italic \bold baz
   }
 }
 c'^\markup {
   \override #'(font-family . typewriter)
   {
     mono: foo \bold bla \italic bar \italic \bold baz
   }
 }
}  



% ****************************************************************
% end ly snippet
% ****************************************************************