'except' tag in the turnrestrictions plugin

[angoca]

What steps will reproduce the problem?

1. When using the turnrestrictions plugin and selecting the exceptions for a given restriction, this plugin is introducing an undocumented key.
2. By checking the wiki documentation, I didn't find anything at ​https://wiki.openstreetmap.org/w/index.php?title=Key:except. This page redirects to Relation:restriction which is a general thing. Also, there are no Wiki pages for any tag combination with this key (i.e. except=bicycle). In other words, the plugin is using a non accepted key.
3. When looking at the talk page of Relation:retriction, this key has a lot of discussions and it seems it could create many issues.

In conclusion, this plugin should not introduce something that could create errors, or generate controversies.

What is the expected result?

Use another accepted tag, or do not provide this option until fully approved.

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

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2022-01-02 21:24:43 +0100 (Sun, 02 Jan 2022)
Build-Date:2022-01-02 20:26:19
Revision:18360
Relative:URL: ^/trunk

Identification: JOSM/1.5 (18360 en) Mac OS X 10.15.7
OS Build number: Mac OS X 10.15.7 (19H1713)
Memory Usage: 1177 MB / 3641 MB (548 MB allocated, but free)
Java version: 1.8.0_321-b07, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Look and Feel: com.apple.laf.AquaLookAndFeel
Screen: Display 69731270 1440×900 (scaling 1.00×1.00)
Maximum Screen Size: 1440×900
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: en_CO
Numbers with default locale: 1234567890 -> 1234567890
VM arguments: [-Djava.security.policy=file:<java.home>/lib/security/javaws.policy, -DtrustProxy=true, -Djnlpx.home=<java.home>/bin, -Djava.security.manager, -Djnlpx.origFilenameArg=${HOME}/Library/Application Support/Oracle/Java/Deployment/cache/6.0/56/1ee8cfb8-16e9d1de, -Djnlpx.remove=false, -Dsun.awt.warmup=true, -Djava.util.Arrays.useLegacyMergeSort=true, -Dmacosx.jnlpx.dock.name=JOSM, -Dmacosx.jnlpx.dock.icon=${HOME}/Library/Application Support/Oracle/Java/Deployment/cache/6.0/25/4c122699-7a1c6b48.icns, -Djnlp.application.href=https://josm.openstreetmap.de/download/josm.jnlp , -Djnlpx.jvm="<java.home>/bin/java"]
Dataset consistency test: No problems found

Plugins:
+ FastDraw (35893)
+ Mapillary (2.0.0-beta.2)
+ PicLayer (1.0.1)
+ apache-commons (35893)
+ apache-http (35893)
+ buildings_tools (35908)
+ continuosDownload (99)
+ ejml (35893)
+ geotools
+ imagery-xml-bounds (35893)
+ imagery_offset_db (35893)
+ jna (35893)
+ jts (35893)
+ log4j (35893)
+ photo_geotagging (35893)
+ tageditor (35893)
+ terracer (35893)
+ turnlanes-tagging (v0.0.5)
+ turnrestrictions (35893)
+ utilsplugin2 (35893)

Tagging presets:
+ https://josm.openstreetmap.de/josmfile?page=Presets/SITP-Transmilenio&zip=1

Validator rules:
+ https://raw.githubusercontent.com/MaptimeBogota/ColombianJosmValidator/main/Rules_Colombian-specific.validator.mapcss

Last errors/warnings:
- 50603.672 W: Crossing ways test skipped WaySegment [way=1024405705, lowerIndex=3]
- 50603.673 W: Crossing ways test skipped WaySegment [way=166080818, lowerIndex=0]
- 50603.673 W: Crossing ways test skipped WaySegment [way=166080818, lowerIndex=1]
- 50603.674 W: Crossing ways test skipped WaySegment [way=166080818, lowerIndex=2]
- 50603.674 W: Crossing ways test skipped WaySegment [way=166080818, lowerIndex=3]
- 50603.675 W: Crossing ways test skipped WaySegment [way=166080818, lowerIndex=4]
- 50603.675 W: Crossing ways test skipped WaySegment [way=166080818, lowerIndex=5]
- 50603.675 W: Crossing ways test skipped WaySegment [way=166080818, lowerIndex=6]
- 50603.676 W: Crossing ways test skipped WaySegment [way=166080818, lowerIndex=7]
- 50603.676 W: Crossing ways test skipped WaySegment [way=166080818, lowerIndex=8]

[angoca]

The except key is not used a lot:

• ​https://taginfo.openstreetmap.org/keys/?key=except#overview
• ​https://taginfo.openstreetmap.org/tags/?key=except&value=bicycle#overview

And Key:except redirect to restriction page, which means this is not correctly documented.

Also, an overpass turbo query does not show a lot of usage: ​https://overpass-turbo.eu/s/1gIl

[skyper]

I doubt that a wiki page for each value is useful and I already find many conflicts in the wiki because of these value pages. The key except exists since years and iD plus Vespucci support it.

The patch for #20833 would introduce it to JOSM core.

[mkoniecz]

Note: this spawned ​https://community.openstreetmap.org/t/wiki-page-for-each-tag/1471 discussion

[mkoniecz]

​https://wiki.openstreetmap.org/wiki/Talk:Wiki#Redundant_pages_for_%22building_block%22_tags was started on wiki, likely triggered by this thread

[aceman444]

The values of 'except' key are documented on the main 'restriction' key page. I don't think there a strict rule that each tag or key must have its own wiki page.