folder hook: delete old messages

[Kevin Coyner <kevin@xxxxxxxxxxxxx>]

For the longest time I successfully used a folder hook like this:

folder-hook =mutt-users "push '<delete-pattern>~r>5d!~F<enter>'"

so that any time I entered the mutt-users folder, messages older
than 5 days - that I had not marked as important - would be deleted.

I'm not sure when it stopped working, but now this folder hook does
not delete anything.

Any thoughts on what might be happening?

Using Mutt 1.5.13 connecting to an Imap server.

Thanks.

-- 
Kevin Coyner  GnuPG key: 1024D/8CE11941