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Sender: Daniel Schoepe <daniel@schoepe.org>
From: Daniel Schoepe <daniel.schoepe@googlemail.com>
To: Thomas Schwinge <thomas@schwinge.name>
Subject: Re: [PATCH v2] emacs: Turn id:"<message-id>" elements into buttons
	for notmuch searches
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Date: Mon, 17 Oct 2011 15:43:18 +0200
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On Mon, 17 Oct 2011 15:11:47 +0200, Thomas Schwinge <thomas@schwinge.name> =
wrote:
> Ah, of course, right...  Yet, won't yours -- id:\"[^ ]+\" -- match too
> much in this example:
>=20
>     Bla, bla, see id:"some@thing"--"some famous quote" is bla.
>=20
> How about this one?  id:\(\"?\)[^[:space:]"]+\1

You're right, that isn't recognized correctly. According to RFC 822, the
domain part of a message id (which is just "<" addr-spec ">", where
addr-spec is the syntax for normal mail adresses) may contain double
quotes and any other characters if they are escaped with a \. I think
however, that we don't have to handle all those corner cases in a
feature that is merely for convenience, such as this.

In conclusion I think we should allow non-quoted id:..-links, but not
worry about people having escaped spaces or things like that in their
domain parts. What do you think?

Cheers,
Daniel

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