Question about a recipe..

Ages ago, you all were kind enough to give me a nifty recipe stanza to
sort multiple lists from the same domain:

(other beginning .procmailrc stuff)
LISTS='(List1|List2)'
(stanzas...)

:0
*$ ^TO_(.*\<)?\/$LISTS@($HOSTCLASS[.])*(domain|altdomain)[.]org\>
*  MATCH ?? ^^\/[^(_at_)]+
*$ LISTS ?? ()[(|]\/$\MATCH[|)]
*  MATCH ?? ^^\/[^|)]+

{
   LOG = "($MATCH Mailing List)$NL"

   :0A
   .ListHost.$MATCH/
}
(more stanzas...)

My question here is...

I'd like to expand $LISTS to be:

LISTS='((List1|List2)(-request))'

This doesn't work.. neither does '(List1|List2)(-request)'

I've also tried modding the recipe, which also doesn't work:

*$ ^TO_(.*\<)?\/$LISTS(-request)@($HOSTCLASS[.])*(domain|altdomain)[.]org\>

What on Earth am I missing here? I'm feeling quite.. well.. stupid.

Thanks in advance!
Best,
--Glenn

-- 
"They that can give up essential liberty to obtain a little temporary 
safety deserve neither liberty nor safety." 
          ~Benjamin Franklin, Historical Review of Pennsylvania, 1759


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