BUG #17924: Inverted behavior of "Date" and "Reverse Date" when searching a mailbox archive

The following bug has been logged on the website:

Bug reference:      17924
Logged by:          Hans Buschmann
Email address:      buschmann@nidsa.net
PostgreSQL version: Unsupported/Unknown
Operating system:   Postgres Website Mailing List search
Description:        

I recently did a search on pgsql-hackers.

When changing the order of the result set from "Rank" to "Reverse Date" I
observed that "Date" gives the results from newest to oldest while "Reverse
Date" gives them from oldest to newest.

This seems to me a mismatch and quite confusing.

The semantics of Date and Reverse Date should be corrected (exchanged)

Any thoughts?

Hans Buschmann