Discrepancy between file_id_involved and compare_tree

[Robert Collins]

On Mon, 2006-02-06 at 17:49 -0500, Aaron Bentley wrote:
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> Due to a bug in my Tree Transform work, I discovered a discrepancy
> between file_id_involved and compare_tree: A file whose state is
> reverted will not be detected by compare_tree, but it will be detected
> by file_id_involved.
> 
> I believe this is correct; file_id_involved should detect more file_ids
> than a tree comparison.  Here's a test case to show it.

I think this means that the contract of compare_tree is being
misunderstood my various people [myself included at one point]. Perhaps
we can make it clearer, and add an api for 'compare_revision' or some
such that will include all the metadata in the deltas. I.e. the revision
changed, the properties that changed, the last-modification revision id
on files and dirs etc etc etc.

Rob

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