Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> Though the new code will put empty index pages into the free-space map,
> will it also shrink the index file to remove those pages?
If there are free pages at the end, yes --- but it won't move pages
around. This is about the same story as for plain VACUUM ...
regards, tom lane