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-rw-r--r--lib/puppet/interface/action_builder.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/puppet/interface/action_builder.rb b/lib/puppet/interface/action_builder.rb
index afc49e945..0bf4f1408 100644
--- a/lib/puppet/interface/action_builder.rb
+++ b/lib/puppet/interface/action_builder.rb
@@ -69,5 +69,6 @@ class Puppet::Interface::ActionBuilder
@face = face
@action = Puppet::Interface::Action.new(face, name)
instance_eval(&block)
+ @action.when_invoked or raise ArgumentError, "actions need to know what to do when_invoked; please add the block"
end
end