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From: David Bremner <david@tethera.net>
To: Eirik Byrkjeflot Anonsen <eirik@eirikba.org>,
 Alvaro Herrera <alvherre@alvh.no-ip.org>, Tomi Ollila <tomi.ollila@iki.fi>
Cc: notmuch@notmuchmail.org
Subject: Re: notmuch ignoring alot of emails
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Date: Tue, 19 Nov 2019 16:18:11 -0400
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Eirik Byrkjeflot Anonsen <eirik@eirikba.org> writes:

> Then I can really only see three alternatives:
>
> 1. Ignore any "From " lines that aren't followed by something that looks
>    like it could reasonably be a mail header (as Tomi suggested). My
>    suspicion is that this would eliminate almost all false positives.
>    (Outside of mailing lists discussing mboxes, at least.)

This seems more hopeful to me than relying on Content-Length. I tried
(but failed) to quickly understand what GMime is doing to decide if
something is an mbox, but it seems possible that Jeff S (GMime
maintainer) might be receptive to something along those lines.

There is a GMIME_FORMAT_MBOX, but maybe something like
GMIME_FORMAT_RFC4155 could specify a stricter mbox format were each
"message" should be roughly RFC2822 formatted.