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Subject: Re: [boost] A proposal for superproject structure and testing
From: Andrey Semashev (andrey.semashev_at_[hidden])
Date: 2013-12-09 14:41:25

On Monday 09 December 2013 19:29:59 Alexander Lamaison wrote:
> Vladimir Prus <ghost_at_[hidden]> writes:
> > On 09.12.2013 21:17, Alexander Lamaison wrote:
> >> Because, if so, that's not possible with git. Branches are just
> >> nicknames for particular commits. They can come and go pretty much as
> >> they please without disrupting other things. Submodules reference a
> >> _commit_ and the commits remain in the repository regardless of what
> >> happens to the branches.
> >
> > Then what does 'git gc' do?
> Good point. I forgot about this. So, in general, the referenced
> submodule needs to include the commit in _some_ branch for the
> superproject to definitely reference a valid commit.
> However, I think the discussion was about a commit already merged to the
> submodule's master branch, so gc won't touch it.

Not necessarily. In my example a boost release (i.e. a tagged commit to the
superproject's master) references a commit in a submodule branch that is
neither develop nor master. That branch may never be merged to develop or

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