Bo Chen wrote on Wed, Mar 06, 2013 at 10:14:41 -0500: > I am very curious why the server needs to re-compute the skip-delta. Is > there any rule to guide the server which pristine version to be delta-ed > against? To optimize the delta (specifically, to optimize the storage for > the delta)? >
See notes/skip-deltas in trunk. The delta base is not the immediate previous revision in order to reduce the delta chain length needed for reconstructing a random revision of the file from O(log H) to O(H), for a file with H revisions.