To: notmuch@notmuchmail.org
From: Rainer M Krug <R.M.Krug@gmail.com>
Subject: Re: gmail label support in offlineimap - update
Date: Thu, 29 Nov 2012 09:57:45 +0100
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Cc: Jeremy Nickurak <public-not-much-kexSNQTsIoD754YsiR0rpA@plane.gmane.org>,
	notmuch <public-notmuch-gxuj+Tv9EO5zyzON3hdc1g@plane.gmane.org>
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On 28/11/12 19:09, David Bremner wrote:
> Jeremy Nickurak <not-much@trk.nickurak.ca> writes:
> 
> 
>> The other direction sounds like it would be trickier though, since there's no obvious way to
>> say "what notmuch tags have changed since time X?". Is this something that notmuch could
>> provide?
> 
> Not currently, but there have been patches proposed; see e.g.
> 
> id:1323796305-28789-1-git-send-email-schnouki@schnouki.net
> 
>> Alternatively, would it be a good idea to give notmuch a tags-changed hook, so that an
>> external tool could be called on a tag change? That sounds like would solve this problem,
>> keep the gmail/imap logic safely away from notmuch, and probably provide some really
>> interesting other opportunities for automation of things by tags.
> 
> See the thread at
> 
> id:1342503373-16979-1-git-send-email-dominik@with-h.at
> 
> for some patches and discussion.

I think a "tag changed hook" could solve both problems - when there would be an additional "messge
changed" hook: the "message changed" hook could be used to add the x-headers to the notmuch
database, and the "tag changed" hook could do the inverse, i.e. update the x-headers in the message.

This would be a clean approach, which could be used for many things.

Cheers,

Rainer

> 

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