Attached is a patch to paste.registry.StackedObjectProxy that:
 proxies __nonzero__
allows empty and False objects to be used as default values, including None

The constructor behavior is changed slightly- if default= is provided, the value will be used as the default, including default=None. If default= is omitted, there will be no default and TypeError is raised as usual for an empty stack.

-Jason

Attachment: paste.registry.nonzero.patch
Description: Binary data

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