Offlineimap and gnus custom flags

[Alberto Luaces]

Hi,

I'm doing IMAP backups for my accounts at my mail provider with
offlineimap.

Out of curiosity, I wanted to see how the message flags were stored in
the resultant maildir folder. However, only messages flagged as
important have the `F' mark in the last part of the file name of the
message. I couldn't find if offlineimap is storing properly other custom
flags like `gnus-expire', since I found nothing special in those
messages.

Those of you running a local IMAP server, can you check how is it
storing custom flags like the ones issued by gnus?

Thanks!

-- 
Alberto