[Dovecot] Quick question on sieve

[LuKreme]

I have a procmail recipe that does the majority of my heavy lifting for my mailing lists. It's pretty straightforward, but as I understand it, this isn't something sieve can do:

# [  ] contains a space and a tab
:0
* 9876543210^0 ^(List-Id:.*<|X-Mailing-List:[  ]*)\/[-A-z0-9_+]+
* 9876543210^0 ^(List-Post:[  ]*(<mailto:)?|List-Owner:[  ]*(<mailto:)?owner-)\/[-A-Z0-9_+]+
* 9876543210^0 ^(Sender:[  ]*owner-|X-BeenThere:[  ]*|Delivered-To:[  ]*mailing list )\/[-A-Za-z0-9_+]+
* 9876543210^0 ^Sender:.* List"? <(mailto:)?\/[-A-Z0-9_+]+
{ LISTNAME=$MATCH }

Basically, it checks the headers for any one of the headers

List-ID:
List-Post:
List-Owner:
Sender: owner-
X-BeenThere:
Delivered-To:
Sender:.*List

and parses out the name of the list, writing it to the LISTNAME variable 

For the vast majority of mailing lists the message is then written to

.$LISTNAME/

This means that, by default, a new mailing list is automatically sorted to its own mailbox without my doing anything at all.

Is this something hat Sieve can do? Does it have variable assignment?

-- 
<div id="me"><div id="Dennis Miller>It's just my opinion. I could be
wrong.</div>But I'm not.</div>