Comment 1 for bug 1192728

Full output if interested on what happens when you query unset configs in different ways.

PY JUJU:

2013-06-19 21:56:35,411: hook.output@INFO: all: {"log-level": "DEBUG"}
data-path:
data-path(json): null

JUJU-CORE:

2013-06-19 22:08:57 INFO juju context.go:221 worker/uniter: HOOK all: {"account-name":null,"autodiscover-a-query-string":null,"autodiscover-srv-query-string":null,"data-path":null,"exchange-interval":null,"http-proxy":null,"https-proxy":null,"include-manager-plugins":null,"log-dir":null,"log-level":"DEBUG","origin":null,"ping-interval":null,"ping-url":null,"registration-key":null,"script-users":null,"server-autodiscover":null,"ssl-public-key":null,"tags":null,"urgent-exchange-interval":null,"url":null}
2013-06-19 22:08:57 INFO juju context.go:221 worker/uniter: HOOK data-path:
2013-06-19 22:08:57 INFO juju context.go:221 worker/uniter: HOOK data-path(json): null