Validator message doesn't display values from selectors with regexp anymore

[Klumbumbus]

What steps will reproduce the problem?

valildate a node tagged with parking=surface only

What is the expected result?

missing tag - parking without amenity=parking|parking_space|parking_entrance|motorcycle_parking

What happens instead?

missing tag - parking without amenity=

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

This is a regression of r15990. Simply revert that change?

The rule in combinations.mapcss is

*[parking                      ][amenity!~/^(parking|parking_space|parking_entrance|motorcycle_parking)$/][parking!=yes][parking!=no],
way[cutline                    ][man_made!=cutline],
*[bunker_type                  ][military!=bunker] {
  throwWarning: tr("{0} without {1}", "{0.key}", "{1.tag}");
  group: tr("missing tag");
}

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2020-04-10 19:22:21 +0200 (Fri, 10 Apr 2020)
Build-Date:2020-04-11 01:30:44
Revision:16251
Relative:URL: ^/trunk

Identification: JOSM/1.5 (16251 de) Windows 10 64-Bit
OS Build number: Windows 10 Pro 1909 (18363)
Memory Usage: 1031 MB / 1820 MB (605 MB allocated, but free)
Java version: 1.8.0_241-b07, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: \Display0 1680x1050
Maximum Screen Size: 1680x1050
VM arguments: [-Djava.security.manager, -Djava.security.policy=file:<java.home>\lib\security\javaws.policy, -DtrustProxy=true, -Djnlpx.home=<java.home>\bin, -Djnlpx.origFilenameArg=C:\Program Files (x86)\josm-latest.jnlp, -Djnlpx.remove=false, -Djava.util.Arrays.useLegacyMergeSort=true, -Djnlpx.heapsize=NULL,2048m, -Djnlpx.splashport=62702, -Djnlpx.jvm=<java.home>\bin\javaw.exe]
Dataset consistency test: No problems found

[GerdP]

I see the expected "missing tag - parking without amenity="

[Klumbumbus]

Sorry I mixed it up "What is the expected result?" and "What happens instead?" Fixed the description.