Re: 2.18.0 Regression: packing performance and effectiveness

Junio C Hamano [off-list ref] writes:

Imagine that you create a delta and set its size (which happens to
fit in the entry) and then create another whose size does not fit in
the entry.  How does oe_delta_size() know not to look at
pack->delta_size[] and instead look at e->delta_size_ when it wants
to know the delta for the first one?  IOW, shouldn't there be a
"backfill" procedure when oe_set_delta_size() notices that we now
switch to pack->delta_size[] array?

Ah, ignore this.  That is what happens in the prepare_ thing.