Here's a bit of emacs-lisp I wrote to help me reduce the redundancy
between to-list in group-params and the definition of
nnmail-split-fancy: the latter is derived from the former.  There's
also a lot of fancy stuff if you need more complex rules.

Lars, I believe this could go into gnus now that I've got an
assignment to FSF on file.  If you agree with it, I'll write something
for the texinfo docs, and post it as a separate patch.

-- 
Alexandre Oliva http://www.dcc.unicamp.br/~oliva IC-Unicamp, Bra[sz]il
{oliva,Alexandre.Oliva}@dcc.unicamp.br  aoliva@{acm.org,computer.org}
oliva@{gnu.org,kaffe.org,{egcs,sourceware}.cygnus.com,samba.org}
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