Sorting the summary

[Eric Larson <eric@ionrock.org>]

I started using offlineimap to sync an imap mailbox but the way
offlineimap gets the mail messages seems to put them in random order
in the wl sumary. I'm wondering if there is a good way to
automatically sort by the date when starting the summary mode. 

I did try writing a hook using wl-summary-sort-by-date and
wl-summary-sort but both seemed to accept an array of messages (at
least that was my theory). 

Any ideas?

Thanks!

Eric Larson