mapcss join_list() doesn't work correctly

[Klumbumbus]

I tried working with join_list() but I didn't get the wanted result. While the example from ticket:8170#comment:12 works, I face problems with the following examples:

(the wanted result is "ab, cd")

node {
    text: join_list(", ", list (ab, cd));
}

or

node {
    mylist: list(ab, cd);
}

node {
    text: join_list(", ", prop(mylist));
}

results in "Keyword{ab}, Keyword{cd}"

node {
    mylist: list(ab, cd);
}

node {
    text: join_list(", ", mylist);
}

displays nothing

(using eval() doesn't help)

URL:http://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2017-03-27 22:10:42 +0200 (Mon, 27 Mar 2017)
Build-Date:2017-03-28 01:32:15
Revision:11784
Relative:URL: ^/trunk

Identification: JOSM/1.5 (11784 de) Windows 10 64-Bit
Memory Usage: 1720 MB / 3641 MB (501 MB allocated, but free)
Java version: 1.8.0_121-b13, 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-mehr-RAM.jnlp, -Djnlpx.remove=true, -Djava.util.Arrays.useLegacyMergeSort=true, -Djnlpx.heapsize=1024m,4096m, -Djnlpx.splashport=53776, -Djnlpx.jvm=<java.home>\bin\javaw.exe]
Dataset consistency test: No problems found

Plugins:
+ AddrInterpolation (33160)
+ DirectDownload (33160)
+ DirectUpload (33182)
+ FastDraw (33182)
+ HouseNumberTaggingTool (33160)
+ Mapillary (v1.4.2)
+ OpeningHoursEditor (33185)
+ Tracer2 (33004)
+ alignways (33182)
+ apache-commons (32994)
+ apache-http (32699)
+ buildings_tools (33004)
+ contourmerge (1030)
+ editgpx (33004)
+ imagery-xml-bounds (33004)
+ imagery_offset_db (33004)
+ jogl (1.0.46)
+ log4j (32699)
+ measurement (33088)
+ osm-obj-info (1484152384)
+ photo_geotagging (33088)
+ photoadjust (33088)
+ reltoolbox (33088)
+ reverter (33088)
+ tag2link (33035)
+ tageditor (33021)
+ tagging-preset-tester (33004)
+ terracer (33088)
+ turnlanes-tagging (254)
+ turnrestrictions (33088)
+ undelete (32699)
+ utilsplugin2 (33182)
+ wikipedia (33098)

Tagging presets:
+ https://josm.openstreetmap.de/josmfile?page=Presets/OneClick&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/StolpersteineLight&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/NewTags&zip=1
+ %UserProfile%\Documents\OSM\JOSMSVN\data\defaultpresets.xml
+ https://raw.githubusercontent.com/yopaseopor/traffic_signs_preset_JOSM/master/DE.zip
+ https://josm.openstreetmap.de/josmfile?page=Presets/Industrial&zip=1
+ http://somewhere.dk/email/josm/source.xml

Map paint styles:
+ %UserProfile%\Documents\OSM\JOSMSVN\styles\standard\elemstyles.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/HiDPISupport&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Coloured_Streets&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Maxspeed&zip=1
- %UserProfile%\Documents\OSM\eigene styles\maxspeed\maxspeed_2.8_01 zeige richtungspfeile.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/Lane_and_Road_Attributes&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/sac_scale&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/ShowID&zip=1
- %UserProfile%\Documents\OSM\eigene styles\PriorityRoad\PriorityRoad_1.0.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/LayerChecker&zip=1
- %UserProfile%\Documents\OSM\eigene styles\layer checker\layer checker_1.2.mapcss
- %UserProfile%\Documents\OSM\TestNew\newicons.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/Surface&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/ParkingLanes&style&zip=1
- %UserProfile%\Documents\OSM\patches\old MPs\dataquality.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/Sidewalks&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Cycleways&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Osmc&style&zip=1
- https://raw.githubusercontent.com/species/josm-preset-wheelchair/master/sidewalks_kerbs.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/LitObjects&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Lit&style&zip=1
- %UserProfile%\Documents\OSM\eigene styles\Tourenplanung.mapcss
- %UserProfile%\Documents\OSM\eigene styles\SpecificBuildingValues\SpecificBuildingValues.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/Coloured_buildings&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Modified&zip=1
- https://github.com/bastik/mapcss-tools/raw/osm/mapnik2mapcss/osm-results/mapnik.zip
- %UserProfile%\Documents\OSM\eigene styles\area-symbol.zip
- http://www.freietonne.de/ft_icons/josm/FreieTonne_rules_presets_zip.php
- https://josm.openstreetmap.de/josmfile?page=Styles/NewHighwayColors&zip=1
- http://www.openrailwaymap.org/styles/standard.zip
- https://josm.openstreetmap.de/josmfile?page=Styles/MaxspeedIcons&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/DestinationSignRelation&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/ParkingLanes&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Incline&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/PTStops&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/AdvertisingStyle&zip=1
- https://www.dropbox.com/s/qo3ai47fpv241jf/Styles_Fixme_and_Notes.zip?raw=1
- https://github.com/gmgeo/osmic-josm-style/archive/master.zip
- https://josm.openstreetmap.de/josmfile?page=Styles/hazmat&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Coloured_Suburb&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Coloured_Postcode&zip=1
+ %UserProfile%\Documents\OSM\eigene styles\recycling materials\recycling materials 1.01.mapcss

Validator rules:
+ https://raw.githubusercontent.com/<user.name>n-a-bauer/josm-validators/master/mtb.validator.mapcss
+ %UserProfile%\Documents\OSM\TestNew\new.validator.mapcss
+ https://josm.openstreetmap.de/josmfile?page=Rules/GermanySpecific&zip=1
- %UserProfile%\Documents\OSM\TestNew\germ.validator.mapcss
+ https://josm.openstreetmap.de/josmfile?page=Rules/CzechRepublicAddressSystem&zip=1

Last errors/warnings:
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- E: Fehler beim Laden des Bildes 'Zeichen_261.svg'
- W: Mappaint style "standard" (recyclinglocal) icon "Zeichen_261.svg" not found.

[Klumbumbus]

just a little background information: I'm trying to create a mappaint style like this:

[Don-vip]

If you want "ab, cd" this is the way to go:

node {
    text: join_list(", ", list ("ab", "cd"));
}

But I assume you don't want hardcoded values :) Can you please share the real mapcss rule you're trying to achieve?

[Klumbumbus]

Thanks for this hint. It seems I can now build my code.

I tested so many code possibilities but somehow missed the right syntax :)

[Klumbumbus]

The result is at Styles/RecyclingMaterials

[bastiK]

nice :)