Peter Geoghegan <pg(at)heroku(dot)com> writes:
> I just noticed that the release notes mention char(n) as affected.
> That's not actually true, because char(n) SortSupport only came in
> 9.6. The Wiki page now shows this, which may be the most important
> place, but ideally we'd fix this in the release notes. I guess it's
> too late.
Well, too late for 9.5.2 anyway. It still makes sense to correct that
text for future releases. I'm inclined to wait a little bit though and
see what other improvements become apparent. For instance, I think the
point about non-first index columns not being affected is of greater
weight than you seem to place on it.
regards, tom lane