opscode/chef — pull request #2096 by adamedx (2014-09-20 15:17:46+00:00)
Title: guard_interpreter requires a command

Raises an exception if guard_interpreter is set (not :default) and we are not
given a command (i.e. we are given a block). This is not supported, as we pass
a command to an external interpreter.

Related to #1943