Changset manager: Discussion tab: Problem with sorting by date

[skyper]

What steps will reproduce the problem?

1. Open ​changeset #85329869 in changeset manager
2. Open Discussion tab in lower half
3. Sort by date twice

What is the expected result?

The same order as before sorting

What happens instead?

The order is messed up and the first comment is not in first place.

Please provide any additional information below. Attach a screenshot if possible.

Looks like the time is upside-down for each day.

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2020-11-26 22:24:27 +0100 (Thu, 26 Nov 2020)
Revision:17364
Build-Date:2020-11-27 02:30:53
URL:https://josm.openstreetmap.de/svn/trunk

[GerdP]

In 17370/josm:

fix #20165: Changset manager: Discussion tab: Problem with sorting by date

• implement special sorter for date

Cannot use automatically created row sorter because it uses Object.toString() for sorting and the format returned by Date.toString() (e.g. "Sat May 30 08:54:31 CEST 2020") is not usable for sorting.