In Backbone 0.3.3, the Controller routes specs passed.
In Backbone 0.5.3, Router spec 67 fails. (They do pass in IE7 and IE8)
Here's the content of the failing spec:
Backbone.Router: Router: routes (query) (2, 0, 2)
Diff: "mandel" undefined
Diff: "a=b&c=d" undefined
@tbranyen informed me that Backbone.js only supports IE7+...
BUT this isn't clearly documented anywhere, so we need to fix that. tagging this ticket as "documentation"
@jashkenas Agreed. The issue was worth noting, but not important enough for me to provide a fix.