Hi,

At the end of many rules, I tend to clean up the variables that I have used by unsetting them. Later aide versions complain when you try to unset a variable that hasn't been set in the first place. This sounds like a nuisance for me. I'd like to have the semantics of @@undef like "after this statement, the variable is unset, no matter what, idempotently".

Please consider removing that warning or demoting it to DEBUG.

Greetings
Marc