[Orgmode] Hiding deadlines for completed (but not DONE) tasks

[Giorgio Valoti]

Hi, 
by default, a task with a deadline shows up in the agenda until is marked DONE. 
Reading the docs it seems there’s no way to specify other statuses to ignore. I 
use some other states, like CANCELLED or CLOSED that I’d like to hide as well. 
Is there a way to do this? 

Thank you in advance
--
Giorgio Valoti