Taskwarrior, delete old recurring tasks

Question

How do I remove all recurring tasks in taskwarrior that are completed before some date?

I tried:

task Nevena until:07/29/2014 uuids 

to get a list of those that fall before this date and collect their identifiers, so I could delete them to remove the command, but I did not get the expected results.

Answer 1

I found the answer by pulling my hair a little:

 task $(task uuids due.before:now) delete 

did the trick.

This worked because no matter what the date was, the completed tasks did not have a due date in the future, so this command left my current new tasks with deadlines intact.