Re: Help needed: nnmaildir and expire-group parameter.

[Eric Abrahamsen]

Fernando de Morais <fernando.morais@academico.ifpb.edu.br> writes:

> Hello everyone,
>
> According to the manual[1][2], `nnmaildir' uses its own group parameters
> to handle expiration.
>
> Excepting `nnmail-expiry-wait(-function)' variables, to handle
> expiration per group, the user needs to set values for `expire-age' and
> `expire-group' parameters.  Ok, so considering the snippet below:
>
> #+begin_src emacs-lisp
>   (customize-set-variable 'gnus-parameters
>                           '("nnmaildir:inbox"
>                             (expire-age . 0)                   ; <-- Here
>                             (expire-group . "nnmaildir:trash"))) ; <-- Here
>   (customize-set-variable 'gnus-secondary-select-methods
>                           '((nntp "news.gwene.org")
>                             (nnmaildir ""
>                                        (directory "~/Mail/")
>                                        (target-prefix "")
>                                        (get-new-mail t))))
>   (customize-set-variable 'gnus-select-method '(nnnil ""))
>   (customize-set-variable 'gnus-total-expirable-newsgroups
>                           (regexp-opt '("nnmaildir:trash")))
> #+end_src

A quick check you can do is to evaluate (after Gnus has loaded):

(nnmaildir--param "nnmaildir:inbox" 'expire-age)

And see what that gives you. I'm not entirely sure that
"nnmaildir:inbox" is correct, and I wonder if the problem you're seeing
comes from the fact that your nnmaildir server has a blank string for a
name.

The real check would be to edebug `nnmaildir-request-expire-articles'
and see what it's doing. You may already be familiar with edebug; if not
then put point inside that function and hit "C-u C-M-x". The next time
expiry runs the process will halt and display this function, and you can
step through it with <SPC>. As point passes over various sexps, their
return value will be shown in the minibuffer. Look for the value of
"pgname", and the 'expire-age parameter, and later the 'expire-group
parameter. Something in there should jump out at you as "wrong".

(Apologies if you already know edebug.)

Eric