Re: Easy comparisons between related trunks, branches, and tags

On Tue, 08 Nov 2005, Jim Blandy wrote:
> # Two directories are "parallel" if it makes sense to compare
> # corresponding files in them. A trunk and a branch or tag taken from
> # that trunk are parallel, as are two branches from the same trunk.

Yes, this definition of "parallel" is exactly the right way of looking
at the problem.

I think that Greg's idea of transformation rules required the two
directories to have a common ancestor (at which there would be a dirprop
describing the transformation rule), whereas your idea doesn't need
a common ancestor (placing the necessary dirprops at the "trunk" or
"branches/foobranch" or "vendor/release" level, not at the "project"
level).

I noticed two unsolved problems: If several branches are each declared
as parallel to the trunk, how do we know that the branches are also
parallel to each other? And how do we know how many directory
components are part of the branch specifier, as opposed to part of the
directory within the branch?

--apb (Alan Barrett)

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Received on Wed Nov 9 10:55:19 2005