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From: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
To: Teemu Likonen <tlikonen@iki.fi>, Notmuch Mail <notmuch@notmuchmail.org>
Subject: Re: filtering headers from forwarded messages
Date: Sun, 03 Jan 2021 12:35:48 -0500	[thread overview]
Message-ID: <87lfd99b4b.fsf@fifthhorseman.net> (raw)
In-Reply-To: <87turylatz.fsf@iki.fi>


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On Sun 2021-01-03 09:48:56 +0200, Teemu Likonen wrote:
> But yes, it would be nice to filter headers like "Received", maybe
> "DKIM-Signature" and various unofficial headers starting with "X-".

Right, my current value of message-forward-ignored-headers is:

    ("^Content-Transfer-Encoding:" "^X-Gnus:" "^Received:"
     "^Return-Path:" "^X-Original-To:" "^Delivered-To:"
     "^X-Virus-Check-By:" "^Received-SPF:")

(i don't care to strip out DKIM-Signature headers because i see that as
part of the initial message injection into the SMTP system)

> For a quick first step I would probably try running "C-u M-|"
> (shell-command-on-region) in Emacs and pipe the forwarded message
> through command like this:
>
>     formail -I Received -I DKIM-Signature -I X-Whatever
>
> Probably after that I would integrate that shell command call in one
> Emacs command and then implement the functionality in Emacs Lisp. But so
> far I haven't cared enough.

This all sounds like it would work, but it seems like a lot of trouble
compared to fixing a regression.  this filtering worked just fine for
me before i upgraded to emacs 27.1.

I've filed a report about the regression with emacs upstream:
https://debbugs.gnu.org/45631

Thanks for helping me think through the details, Teemu.

   --dkg

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      reply	other threads:[~2021-01-03 17:51 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-20 18:50 filtering headers from forwarded messages Daniel Kahn Gillmor
2019-12-30 13:16 ` Teemu Likonen
2020-01-08 15:25   ` Daniel Kahn Gillmor
2020-01-16 20:20     ` Daniel Kahn Gillmor
2020-12-24 17:56       ` Daniel Kahn Gillmor
2020-12-30 10:46         ` Teemu Likonen
2020-12-31 22:39           ` Daniel Kahn Gillmor
2021-01-03  7:48             ` Teemu Likonen
2021-01-03 17:35               ` Daniel Kahn Gillmor [this message]

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