Comment 2 for bug 545125

See also bug 435905 and bug 482436, which if not actually dupes seem pretty close. It's very annoying when the comment contains a traceback.

fwiw code reviews currently seem to get this right, or at least better (eg <https://code.edge.launchpad.net/~vila/bzr/config-modify/+merge/37513>): text wraps only when the window is too narrow to show the whole thing.