I suspect it's just Aoineko being fancy. Please could we have a plain old comma instead?
I didn't made any aesthetic change. It was just a bug. The file is shared on the french wikipedia at this address : http://fr.wikipedia.org/wiki/Wikip%E9dia:LanguageFr.php I asked everybody if they were ok with this new version before to send it. By the way the old version was " à " but I put ", " like Tarquin suggested. You are free to change.
Aoineko