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From: Kai.Grossjohann@CS.Uni-Dortmund.DE
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Subject: Re: M-x gnus-filter-mail-at-warp-10 (was: Re: Pre-Processed maiil splitting under Gnus?)
Date: 12 Jan 1999 18:35:19 +0100
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Asymptotically Approaching Relaxation <feoh@cosmic.com> writes:

  > (setq nnmail-split-methods
  > 	'(("mail.imagine" ".*owner-imagine@MAELSTROM\.STJOHNS\.EDU")
  > 	("mail.mesa" "Return-Path:.*mesa.*.BR.*")
  > 	("mail.kaffe" "Sender:.*kaffe@w3\.org")
  > 	("mail.0xdeadbeef" ".*0xdeadbeef@substance\.abuse\.blackdown\.org")
  > 	("mail.0xdeadbeef" "To:.*0xdeadbeef@substance.abuse.blackdown.org")
  > 	("mail.linux-kernel" "linux-kernel@vger\.rutgers\.edu")
  > 	("mail.linux-smp" "linux-smp@vger\.rutgers\.edu")
  > 	("mail.linux-net" "linux-net@vger\.rutgers\.edu")
  > 	("mail.linux-gcc" "linux-gcc@vger\.rutgers\.edu")
  > 	("mail.linux-svgalib" "linux-svgalib@vger\.rutgers\.edu")
  > 	("mail.linux-tape" "linux-tape@vger\.rutgers\.edu")
  > 	("mail.linux-scsi" "linux-scsi@vger\.rutgers\.edu")

I'm sure that these can be made faster by always using the header name
(a number of these don't have headers), and by prefixing the header
name with "^" (which means at beginning of line).

To be specific: the "mail.kaffe" regex could be
"^Sender:.*kaffe@w3.org".

Also, note that the Lisp reader expands "\." to "." so "foo\.bar" and
"foo.bar" are the same.  If you want to match a dot, use "\\.".

kai
-- 
Just because I'm paranoid doesn't mean they're not out there to get me!