xiaoyafeng needs to figure out which module defines a WRAPPER setting, because its not Catalyst, and then probably needs to subclass that module....

update: now I see, its Catalyst::View::TT, and http://wiki.catalystframework.org/wiki/gettingstarted/howtos/template_wrappers recommends your approach.

I don't like this approach, I think if you want a different wrapper, you probably want a separate view subclass.