OK. I will fix that. As I said on Jabber, Augeas 1.0.0 would now allow to perform this check without using a tempfile (using `store` and `retrieve`). However, I think it might not be a good idea to add a dependency on Augeas 1.0.0 (which was just released this month) and a yet-to-be-released version of `ruby-augeas`. Any thoughts?