Re: deleting instead of expiring mail

[Adrian Lanz <lanz@wsl.ch>]

On Don 26 Feb 2015 (15:17:06 +0100) Adrian Lanz writes:

> Help, I am suddenly loosing old mails - they are deleted instead of
> expired (for some 3 weeks now). I am on Gnus v5.13.
>
> I am not aware of any changes in my configuration. Possibly, I may have
> experimented with a nnvirtual group (nnvirtual "^nnfolder\\+mail.*$")
>

[...]

>
> My relevant entries since always are:
>
>   (setq-default nnmail-expiry-wait-function
> 		(lambda (group)
> 		  (cond ((string= group "spam.mail") 5)
> 			((string= group "root@sampling") 5)
> 			(t 30)))
> 		gnus-total-expirable-newsgroups "nnfolder\\+mail:.*"
> 		gnus-mark-copied-or-moved-articles-as-expirable t
> 		nnmail-expiry-target 'nnmail-fancy-expiry-target
> 		nnmail-fancy-expiry-targets
> 		'(("xref" "spam\\.mail:[01-9]" "nnml+expired:spam.%Y")
> 		  (to-from "root@sampling" "nnml+expired:sampling-root-%Y")
> 		  (to-from "et\\.com" "nnml+expired:et-%Y")
> 		  (to-from "ws\\.com" "nnml+expired:ws-%Y")
> 		  (to-from ".*" "nnml+expired:other-%Y"))))
>
>
>   (setq-default gnus-select-method '(nnnil "")
> 	        gnus-secondary-select-methods
> 	        `((nntp "news.gmane.org")
> 		  (nnfolder "mail"
>                             [...]
> 			    (nnfolder-get-new-mail t)
> 			    (nnfolder-inhibit-expiry nil))
>
>    		  (nnml "expired"
>                         [...]
> 		        (nnml-get-new-mail nil)
> 		        (nnml-inhibit-expiry t))
>
>
> And, expiry of spam and sampling-root continuous to work as expected,
> but the (important!) mails in the other groups in nnfolder+mail:* get
> lost!

Ok, I see what is happening, but I am completely lost why and whether it
is a bug or a bad configuration from my side.

The old and always bahaviour: Entering a normal mail group, reading an
article and quitting the group, marks the article as read showing the
"O" mark when re-entering the group - expiry to the archive works as
intended (after 30 days)

With a virtual group to ease checking unread mails across all the mail
groups (nnvirtual "^nnfolder\\+mail.*$") the following happens: entering
this virtual group (without even reading any articles) and leaving it,
marks all read articles in all mail groups as expirable with a visible
"E" mark, and articles get deleted (after 7 days, I think) instead of
expired (moved) to the archive after 30 days

Is this intended? How can I avoid the virtual group annul the expiry
process?

Best, Adrian.