lilypond-book and space in filename

[Renaud Flavigny]

Hi

I met an issue with lilypond-book 2.11.49 with Windows XP SP2

When I try to compile the lytex file including some \lilypondfile tag, I 
got the following messages

Microsoft Windows XP [version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

D:\renaud\Ma musique\CahierDeChants>lilypond-book ChantsDynamiques.lytex
lilypond-book.py (GNU LilyPond) 2.11.49
Reading ChantsDynamiques.lytex...
lilypond-book.py: warning: cannot find \begin{document} in LaTeX document
Dissecting...
Writing snippets...
Processing...
Running lilypond...GNU LilyPond 2.11.49
erreur de programmation : file name not normalized: D:\renaud\Ma
poursuite ; croisons les doigts.
Erreur : fichier non trouv├® : ┬½ D:\renaud\Ma ┬╗ (chemin de chargement 
: « G:/
Program Files/LilyPond/usr/share/lilypond/current/fonts/svg/;G:/Program 
Files/Li
lyPond/usr/share/lilypond/current/fonts/type1/;G:/Program 
Files/LilyPond/usr/sha
re/lilypond/current/fonts/otf/;G:/Program 
Files/LilyPond/usr/share/lilypond/curr
ent/scm;G:/Program 
Files/LilyPond/usr/share/lilypond/current/ps;G:/Program Files
/LilyPond/usr/share/lilypond/current/ly;D:\\renaud\\Ma 
musique\\CahierDeChants;
┬╗)
command failed: lilypond --formats=ps -dbackend=eps  -I  "D:\\renaud\\Ma 
musique
\\CahierDeChants" --formats=eps  -deps-box-padding=3.000000  
-dread-file-list -d
no-strip-output-dir D:\renaud\Ma 
musique\CahierDeChants\snippet-names-494871759.
ly
Child returned 1

D:\renaud\Ma musique\CahierDeChants>

The warning for the missing \begin is normal because the file is a part 
of a larger document.

I think the command failed because of the presence of a white space in 
the file name but it was'nt a problem with lilypond 2.10.33

Is there a way to work with spaces in files name with lilypond 2.11.49 ? 
I did'nt find any indication in official documentation.

Thank's for help
Renaud