Deleting messages when entering a folder

[Brian Nelson]

I would like mutt to delete messages older than a certain date when
entering my mailing list folders, in other words executing the
function:

delete-pattern ~d >2w

Is there a way to use folder hooks to execute a function?  It seems as
though hooks only run commands, and only macros use functions.  Is
this true, or am I just confused?

Thanks.

-- 
Brian Nelson <[EMAIL PROTECTED]>