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List:       procmail
Subject:    Re: can formail -D be used with other headers?
From:       PSE-L () mail ! professional ! org (Professional Software Engineering)
Date:       2003-11-21 21:17:51
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At 18:52 2003-11-21 +0000, John Conover wrote:

>Can formail -D be used with other headers, like checking In-Reply-To:
>or References: against an Message-ID: idcache?

Not 'zactly, though you can play some tricks if you preserve the original 
messageid, then CHANGE it, run formail, and then change it back.

As per the manpage, using -r tells it to use the envelope sender, but 
that's not what you're asking for here.

I certainly believe that it'd be nice to have advanced idcache options, 
including being able to specify a header (or provide the data directly on 
the commandline).  For instance, a series of mailing lists which I do mail 
administration for has a message identifier token for some web generated 
messages, sort of a signature of the body and author information, intended 
to track duplicates (when a user thinks their message didn't post and sends 
it again), but we don't use formail to cache that info.

At the point that you have to get a header content and rewrite a header in 
order to use formail, it becomes beneficial to just roll your own checking 
utility and do it right from the original message.

---
  Sean B. Straw / Professional Software Engineering

  Procmail disclaimer: <http://www.professional.org/procmail/disclaimer.html>
  Please DO NOT carbon me on list replies.  I'll get my copy from the list.


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