Heikki Linnakangas <heikki.linnakangas@enterprisedb.com> writes:
> Now that think about this more, I don't see either how that check in
> EvalPlanQual could ever be true.
It's there primarily to make the tuple chain chasing code the same
as in other places. Whether it happens to be dead code today because of
arcane details of the usage of EvalPlanQual isn't very interesting.
(I'm unconvinced that it is dead code, but even if it is it'd be folly
to remove it.)
regards, tom lane