Hallo Stuart,

On Thu, 9 Sep 2004 10:54:10 +0100GMT (9-9-2004, 11:54 +0200, where I
live), you wrote:

SM> Filters are driving me potty.

Don't despair.

SM> I belong to a mailing list for Pentax camera owners. This list has
SM> a lot of messages a day but I am only interested in messages that
SM> are about my camera,

That's understandable.

SM> namely a "*ist D" - a stupid name I know.

But a nice camera

SM> However, what I really want to do, is delete any messages
SM> that do not contain these.

ACK

SM> However, having removed the virtual folder and create a new filter
SM> on the inbox using the same criteria I find I get NO matches!!

I guess that you had a filter in place that moved Pentax messages to
another folder. Now if you follow that with a filter that will be
triggered by a subselection of the same messages it won't do that,
unless you set the option 'continue processing with other filters'
(both v2 and v3) or when you make the second filter a subfilter for
the first (v3 only)

As you're looking for something that'll work for both v2 and v3, you
could try this:

Filter1:
Sender contains list-address
AND message source does not contain  *ist d
AND message source does not contain  *istd
Action move to trash

Filter2:
Sender contains list-address
Action move to folder

Filters are processed top down in the sorting office.
As filter1 processes every list message without '*ist d' and '*istd'
the only list messages that filter2 will see are those with either one
or both of these strings. So filter2 doesn't need to be more specific
than this.

When you'd change the order of these two filters, this solution
wouldn't work anymore, because filter2 picked all of the messages,
therefore letting filter1 run dry. To prevent this you'd need to set
'continue processing with other filters' on filter2 and you'd need to
set the source folder for filter1 to the target folder of filter2.

Changing the order would have two disadvantages.
1: Most of your list messages will be processed twice by a filter,
   this takes time
2: Your filters are getting more complicated
3: Even though they're deleted from your list folder, the unwanted
   list messages will be copied to your list folder and therefore
   they'll take space until the next time you're compressing that
   folder.

Note: Most people tend to skip on characters that are neither letter
nor number (hardly anybody on this list talks about 'The Bat!') and
unless Pentax owners differ on this point (what I cannot imagine,
myself owning a Pentax as secondary camera) they'll tend to skip the
asterix, so you could do that too.



-- 
Groetjes, Roelof

The Bat! 3.0.0.8
Windows XP 5.1 Build 2600 Service Pack 1
1 pop3 account, server on LAN

Disclaimer: Any opinion stated in this message is not necessarily shared by my budgies 
or rabbits.

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