Comment 17 for bug 829980

Since the upstart-udev-bridge currently does not support extended characters (as evinced by this bug), no Upstart jobs can be relying on such characters. Therefore following the precedent set by upower...

http://bazaar.launchpad.net/~ubuntu-branches/ubuntu/oneiric/upower/oneiric/view/head:/src/linux/up-device-supply.c#L485

... we'll change the bridge to discard extended characters until there is a proven need to support extended (maybe utf-8?) characters.