From mboxrd@z Thu Jan  1 00:00:00 1970
From: Junio C Hamano <gitster@pobox.com>
Subject: Re: [PATCH 0/4] Submodule Groups
Date: Thu, 21 Jan 2016 14:25:56 -0800
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Junio C Hamano <gitster@pobox.com> writes:

> I suspect that we will end up needing to support both styles.  The
> latter style is easier when you want to express a larger set as a
> collection of groups, e.g.
> ...
> might be a way to say "the default group includes everything in the
> 'development-tools' or 'editors' group, plus 'frotz' module, but do
> not include modules in the xyzzy group" or something like that.

I forgot to say that I personally do not think we need to support
such synthetic groups from day one.