pack-objects: Allow missing base objects when creating thin packs
If we are building a thin pack and one of the base objects we would consider for deltification is missing its OK, the other side already has that base object. We may be able to get a delta from another object, or we can simply send the new object whole (no delta). This change allows a shallow clone to store only the objects which are unique to it, as well as the boundary commit and its trees, but avoids storing the boundary blobs. This special form of a shallow clone is able to represent just the difference between two trees. Pack objects change suggested by Nicolas Pitre. Signed-off-by: NShawn O. Pearce <spearce@spearce.org> Acked-by: NNicolas Pitre <nico@cam.org> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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t/t5306-pack-nobase.sh
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