Grub adds an empty but active line when detecting another OS which has non-UTF-8 data in its name

Binary package hint: grub2

I have another OS (Windows) recognised by grub2 :

nicolas@lightening-storm:~$ sudo update-grub
[sudo] password for nicolas:
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-2.6.31-11-generic
Found initrd image: /boot/initrd.img-2.6.31-11-generic
Found linux image: /boot/vmlinuz-2.6.31-10-generic
Found initrd image: /boot/initrd.img-2.6.31-10-generic
Found memtest86+ image: /boot/memtest86+.bin
Found Microsoft Windows XP �dition familiale on /dev/sda1
Found Windows NT/2000/XP on /dev/sda3
done

But as you can see the "É" of "Édition familiale" (family edition in english) is from another charset and leads grub to add an empty line in the list of the OS to choose on boot (empty line because of no text displayed, but there is a line !), but I can choose this empty line and this is the one which allows me to start Windows.

It's annoying as it's hard to guess that the empty line can start Windows if you don't know this...

It occurs with French edition of Windows, but maybe with any OS name which has hyphens in its name.

ProblemType: Bug
Architecture: i386
CheckboxSubmission: e118220d3d8d9933f55f82b805f8d7a6
CheckboxSystem: 0886efe3e95f2342b20ae33cd4eb5c2a
Date: Mon Sep 28 13:51:41 2009
DistroRelease: Ubuntu 9.10
Package: grub-pc 1.97~beta3-1ubuntu6
ProcEnviron:
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-11.36-generic
SourcePackage: grub2
Tags: ubuntu-unr
Uname: Linux 2.6.31-11-generic i686