nnmaildir question

[Katsumi Yamaoka <yamaoka@jpl.org>]

Hi,

I have a doubt whether nnmaildir actually supports the expiry-wait
group parameter and also the expiry-wait-function group parameter.
Info says in the Maildir section as follows:

`expire-age'
     An integer specifying the minimum age, in seconds, of an article
     before it will be expired, or the symbol `never' to specify that
     articles should never be expired.  If this parameter is not set,
     `nnmaildir' falls back to the usual
     `nnmail-expiry-wait'(`-function') variables (overrideable by the
     `expiry-wait'(`-function') group parameters.

However, the nnmaildir.el code doesn't seem to me to support
those group parameters.  Furthermore, Gnus doesn't support the
expiry-wait-function group parameter, AFAIK.  Did I misread?

(Although I've never used nnmaildir, I noticed it when
translating that Info section into Japanese.)