On Thursday, 4. October 2007, Josh Sled wrote:
> Wolfram Schlich <wschlich@gentoo.org> writes:
> > * Donnie Berkholz <dberkholz@gentoo.org> [2007-10-03 19:12]:
> >> On 12:43 Wed 03 Oct     , Wolfram Schlich wrote:
> >> > And *please*, don't send such mails to this
> >> > list *and* to my address in addition.
> >>
> >> You can add a procmail rule to detect duplicates using a cache and
> >> checking Message-Id, with formail. Examples of this are all over
> >> the place. It's a useful rule to have for many reasons besides
> >> this.
> >
> > Yeah, but it's unpredictable *which* one of the two mails makes
> > it first onto my system, thus the one *not* sent to the list might
>
> Sigh.
>
> It is the same message, addressed To/Cc: you and/or the list, no
> matter which one is delivered first.  So just put all list(+private)
> filtering before personal filtering.

That doesn't work when filtering for List-Id headers which can be nicely 
used with regex matching like so:

# Gentoo lists
:0
* ^List-Id: .*[<]gentoo-\/[^.]+
.gentoo.gentoo-$MATCH/


Robert