Shopify/batman — pull request #439 by pvande (2012-05-25 04:45:28+00:00)
Title: Partial fix for #438 -- correctly reset filter args.

The filter arguments used to skip assigning to 'args' if there were none; unfortunately
because the 'args' variable was lifted to a higher scope, that meant that arguments got
propagated forward from previous calls. This change cleans up that logic, so that all
filters set an appropriate argument list.