Event bug calling eventTarget.on after eventTarget.after with an array

[solmsted]

This bug can be reproduced by passing an array with a single event name to eventTarget.after and then passing the same event name to eventTarget.on: http://jsbin.com/luyubaca/2/edit?js,output

This happens because after passes its type to on: https://github.com/yui/yui3/blob/master/src/event-custom/js/event-target.js#L867

Then on passes it to _parseType https://github.com/yui/yui3/blob/master/src/event-custom/js/event-target.js#L220

and _parseType is wrapped with Y.cached: https://github.com/yui/yui3/blob/master/src/event-custom/js/event-target.js#L59

and Y.cached treats arguments as strings so ['eventName'] matches 'eventName': https://github.com/yui/yui3/blob/master/src/yui/js/yui-core.js#L45