From: Robert Horn <rjhorn@alum.mit.edu>
To: Tomi Ollila <tomi.ollila@iki.fi>, Austin Clements <amdragon@MIT.EDU>
Subject: Re: Using procmail to set tags
In-Reply-To: <m21umllfuk.fsf@guru.guru-group.fi>
References: <m3vcjyl4kg.fsf@quad.robs.office> <20120515132238.GO11804@mit.edu>
	<m21umllfuk.fsf@guru.guru-group.fi>
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Date: Fri, 18 May 2012 10:48:08 -0400
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Tomi Ollila <tomi.ollila@iki.fi> writes:

> On Tue, May 15 2012, Austin Clements <amdragon@MIT.EDU> wrote:
>   * execute notmuch new
>   * use the environment variables in post-new hook 
>       (notmuch tags $NEW_TAGS -new tag:new)
>
Thanks to all, that gave me enough hints to make progress.

It looks like adding a new tag in the config, "needsProcessing", and
then a post-new hook to a script that I write should do the job.
Instead of dealing an even more complex and arcane procmail setup, I
write a script that runs as the post-new hook.  I'm finding the "new"
flagging works correctly for simple mail drop from postfix, so the extra
flag will work.  I don't want to work off "new" because that's also
useful for mail reading and other uses.  The post-new hook can start by
finding the emails that are tagged "needsProcessing", parse and tag them
appropriately, and remove the needsProcessing tag.  It just needs to
start with a query and be written to work on all the messages found, so it
doesn't matter how many are new.

At the moment it looks like a simple python script using the notmuch
library binding may be easiest. If not, there are other tools to do the
job.

R Horn
rjhorn@alum.mit.edu