Antonin Houska <ah(at)cybertec(dot)at> writes:
> The special case is that the path passed to add_path_precheck() has costs
> *equal to* those of the old_path. If pathkeys, outer rells and costs are the
> same, as summarized in the comment above, I expect add_path_precheck() to
> return false. Do I misread anything?
It does, so I don't see your point?
regards, tom lane