hlindberg/puppet — pull request #30 by zaphod42 (2013-07-19 22:53:18+00:00)
Title: Add a lookup() function for injected values

The lookup() function will use the configured bindings and injector to
lookup a value. If one is not found, then nil is returned (which is undef
in the puppet language). Any errors from the injector are propogated out
to the caller.