This does not work. Nothing obvious will. This is an acknowledged issue that they are opting never to resolve. Here's a relevant issue on their bug tracker that has been open for four years: http://jira.atlassian.com/browse/CONF-6405

It wouldn't be nearly as infuriating if it weren't caused by such a terrible design decision (using doubled backslashes for line breaks when the backslash is your only escape char) in the first place.