Andrea Pappacoda writes ("Bug#1106071: [PATCH dgit v1] tag2upload: add 
pristine-tar metadata item"):
> Well, a .delta file represents a binary diff, so an empty binary diff 
> would result in no modifications to the tar file at all. We want to 
> support deltas which change things like the stored order of files in the 
> tarball, or empty directories. So I don't really know how to say this 
> other than

I think

> "the resulting tarball must be treesame to the named git  tree".

this phrase is perfect, for a spec.  It is very precise and says
exactly what we mean.

It would be worse to say the same thing again in different words.  In
specs that can lead to ambiguity if one of the descriptions can be
interpreted differently.

Ian.

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