Linking by Message-ID

[Max Nikulin]

On 05/04/2022 13:14, Ihor Radchenko wrote:
> Karl Fogel writes:
>
> > > >    From: Ihor Radchenko
> > > >    Subject: Re: Removing obsolete function
> > > >    `org-truely-invisible-p'.
> > > >    To: Karl Fogel
> > > >    Cc: Org Mode
> > > >    Date: Sun, 19 Dec 2021 17:14:32 +0800
> > > >    Message-ID: <87h7b5rm6f.fsf@localhost>
> > >
> > > I usually just leave an ML link in such cases:
> > > https://orgmode.org/list/87h7b5rm6f.fsf@localhost
> >
> > As long as the ML link contains the Message-ID, as appears to be
> > the case here, yeah.  Mailing list archives can move, which causes
> > links to suddenly stop working.  But if the Message-ID is in the
> > link, then (with a little extra work) one can always find the
> > message in the new archive.
> >
> > (The reason I typically include more is to make things as easy as
> > possible for those who are searching in a local archive using
> > their regular mailreader.  But I can switch to the above way if
> > you'd prefer.)
>
> FYI, I do not know an easy way to search mailing list archives by
> Message-ID. Message-ID itself does not even provide information which
> mailing list it is referring to (maybe it is e.g. Emacs devel).
> That's why I prefer links - they can often be found using archive.org if
> nothing.
>
> On the other hand, extra information would not heart. In addition to
> link.

A link to a message in the local storage of a regular mail reader should 
have mid: scheme, e.g. mid:87h7b5rm6f.fsf@localhost
https://tools.ietf.org/html/rfc2392
RFC 2392 - Content-ID and Message-ID Uniform Resource Locators

Unfortunately the only way to specify mail list is the text around the link.

Mail-archive promises Message-ID resolver 
https://mid.mail-archive.com/... but it does not work for emacs-orgmode. 
Gmane has the org mail list archive and allows access using Message-ID 
from an arbitrary mail list:

    w3m -m 'nntp://news.gmane.io/87h7b5rm6f.fsf@localhost'

However I consider https://list.orgmode.org/MID links as more friendly 
for users unaware of possible ways to obtain some message using its 
Message-ID.