[Monotone-devel] Re: Delta storage

[Bruce Stephens]

Zbynek Winkler <address@hidden> writes:

[...]

> Given a revision B and C does it matter if you say "we store B->C"  or
> "B<-C"? In both cases once you have one of the revisions you can
> reconstruct the other. No? The only difference would be where it
> starts...

Not all deltas are reversible.  If the delta B->C says "delete lines
38-57", then that doesn't let you construct the delta C->B.  (monotone
stores binary deltas of the xdelta form, I believe, but I think the
same sort of thing can happen in those.)

[...]