Checkouts? Or just light bound branches?

[Jan Hudec]

On Fri, Jan 27, 2006 at 08:45:41 +1100, Robert Collins wrote:
> On Thu, 2006-01-26 at 22:30 +0100, Jan Hudec wrote:
> > On Fri, Jan 27, 2006 at 08:24:29 +1100, Robert Collins wrote:
> > > On Thu, 2006-01-26 at 15:15 -0500, Aaron Bentley wrote:
> > > > -----BEGIN PGP SIGNED MESSAGE-----
> > > > Hash: SHA1
> > > > 
> > > > It somewhat bothers me that checkouts and branches both have the concept
> > > > of last-revision.  Considering that revision-history is the only concept
> > > > that Branches represent, there's a lot of overlap.
> > > 
> > > Hmm. Well Branches represent the sequence, checkouts the point in time,
> > > IMO.
> > 
> > When revision-history goes away (as I assume is still the plan), they will be
> > the same.
> 
> Not at all: checkouts will still have files on disk that represent the
> instant the user is at, branches which are at arbitrary urls will not
> have files on disk - though they can generate the content for the
> -basis- tree.
> 
> If you wanted to say that Branch will be the basis tree and checkout the
> active tree, that might make sense.

Sounds like a confusion of terms.

What you call 'checkout' already exists, 'Working Tree', is, indeed,
differnt thing than a branch. However each working tree needs to know
what it's basis is. If it lives alongside a branch (as it always does so
far), it's basis is the current revision of that branch.

However as far as I understood, 'checkout' was supposed to mean a
working tree dislocated from the branch. But because that means there
can be several working trees for a single branch, each has to remember
which revision it was checked out from. So it's not *just* a WorkingTree
- it additionally has a current revision.

Now if current revision wholly defines a branch, well, than checkout has
a branch. Which means it is no longer dislocated -- and there is no need
for the term. It becomes just a bound branch with a working tree and
dislocated storage.

-- 
						 Jan 'Bulb' Hudec <bulb at ucw.cz>
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