Should not display multiple warnings when the affected elements are the same

[naoliv]

Validated the attached file and see how we get two Overlapping Identical Natural Areas warnings.
Note that the 2 warnings are about the same elements.

Could JOSM group such warnings and display only one message when the affected objects are the same? (regardless if the message is about "object A and B" or "object B and A", since the order doesn't matter here)

JOSM:

Build-Date:2016-03-14 20:32:04
Revision:9993
Is-Local-Build:true

Identification: JOSM/1.5 (9993 SVN en) Linux Debian GNU/Linux unstable (sid)
Memory Usage: 765 MB / 3641 MB (342 MB allocated, but free)
Java version: 1.8.0_72-internal-b15, Oracle Corporation, OpenJDK 64-Bit Server VM
VM arguments: [-Dawt.useSystemAAFontSettings=on]
Dataset consistency test: No problems found

[Don-vip]

The warning is thrown from geometry.mapcss:

/* see ticket #9556 */
area:closed:areaStyle[tag("natural") = parent_tag("natural")] ⧉ area:closed:areaStyle[natural] {
  throwWarning: tr("Overlapping Identical Natural Areas");
}

any idea how to solve that?

[Don-vip]

Ticket #9821 has been marked as a duplicate of this ticket.

[Don-vip]

In 11493/josm:

see #12627, see #14289 - add non regression unit tests

[GerdP]

In 15064/josm:

fix #12627,#14287,#14289,#17695

• let CrossingFinder and ContainsFinder find all objects instead of stopping at first match
• if objects are selected, make sure that ContainsFinder is called for enclosing objects which are not in the selection
• enable corresponding unit tests

Draw back: MapCSSTagChecker is a bit slower.

[simon04]

In 17622/josm:

see #12627 - Extract TestError.isSimilar