Any updates on the `List-Id` indexing feature?

[Ciprian Dorin Craciun]

On Wed, Apr 29, 2020 at 8:08 PM David Bremner <david at tethera.net> wrote:
> > I've also read the FAQ:
> > * https://notmuchmail.org/faq/#index8h2
>
> Oops, that needs to be updated.
>
> It is implemented. See notmuch-config(1), under "index.header"


That's perfect.  However the `search-terms` man pages doesn't say how
it should be used.

Should I gather (from the `config` manpage) that these "prefixes"
should always start with a upper-case letter, as in: `notmuch search
-- 'List:some-id'`?

Thanks,
Ciprian.