regexp_match() in validator.mapcss should allow placeholders

[andygol]

Related to #17669

What steps will reproduce the problem?

/* Excessive ";" symbol at the end of the value */
*[/(phone|fax)/][/(phone|fax)/ =~ /^(.+); *$/] {
    throwWarning: tr("{0}", "{0.value}");
    group: tr("Empty value after \";\"");
    fixAdd: concat("{0.key}=", get(regexp_match("^(.+); *$", "{0.value}"), 1));
}

run this rule against POI with contact:phone=+380 4594 57 441;+380 4594 57 442; or fax=+380 4594 57 441; or similar tags

What is the expected result?

Value without trailing ; symbol

• contact:phone=+380 4594 57 441;+380 4594 57 442
• fax=+380 4594 57 441

What happens instead?

Tested tag disappears as regexp_match() with placeholder "{0.value}" returns null.

This behaviour is very similar to the case of using tag("{0.key}"), if we use placeholder instead of explicit key

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

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2022-04-04 22:26:00 +0200 (Mon, 04 Apr 2022)
Revision:18427
Build-Date:2022-04-05 01:30:55
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (18427 uk) Mac OS X 12.4
OS Build number: macOS 12.4 (21F79)
Memory Usage: 508 MB / 8192 MB (280 MB allocated, but free)
Java version: 18+36-2087, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Look and Feel: com.apple.laf.AquaLookAndFeel
Screen: Display 1 1512×982 (scaling 2.00×2.00)
Maximum Screen Size: 1512×982
Best cursor sizes: 16×16→16×16, 32×32→32×32
System property file.encoding: UTF-8
System property sun.jnu.encoding: UTF-8
Locale info: uk_UA
Numbers with default locale: 1234567890 -> 1234567890
Program arguments: [--debug]
Dataset consistency test: No problems found

[taylor.smock]

Closed as duplicate of #17669.
It looks like fixing #17669 will fix this ticket.

[taylor.smock]

In 18757/josm:

Fix #17669, #22096: Allow placeholders in more locations in MapCSS