Validator error for manhole=plain

[pyrog]

Validator display "Valeur de la propriété inconnue - La valeur 'plain' de la clé 'manhole' est inconnue, peut-être s'agit-il d'une des 'drain' ?"
​way 623185031

The tag manhole=plain is documented in the [wiki ​https://wiki.openstreetmap.org/wiki/Key:manhole]

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: 2019-11-06 00:36:45 +0100 (Wed, 06 Nov 2019)
Build-Date:2019-11-06 02:30:56
Revision:15519
Relative:URL: ^/trunk

Identification: JOSM/1.5 (15519 fr) Mac OS X 10.14.6
OS Build number: Mac OS X 10.14.6 (18G95)
Memory Usage: 995 MB / 1820 MB (444 MB allocated, but free)
Java version: 1.8.0_221-b11, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: Display 69732928 1280x800
Maximum Screen Size: 1280x800
VM arguments: [-Djava.security.policy=file:<java.home>/lib/security/javaws.policy, -DtrustProxy=true, -Djnlpx.home=<java.home>/bin, -Djava.security.manager, -Djnlpx.origFilenameArg=${HOME}/Library/Application Support/Oracle/Java/Deployment/cache/6.0/31/583aa85f-4a297e61, -Djnlpx.remove=false, -Dsun.awt.warmup=true, -Djava.util.Arrays.useLegacyMergeSort=true, -Djnlpx.heapsize=NULL,2048m, -Dmacosx.jnlpx.dock.name=JOSM (development version), -Dmacosx.jnlpx.dock.icon=${HOME}/Library/Application Support/Oracle/Java/Deployment/cache/6.0/25/4c122699-72a21903.icns, -Djnlp.application.href=https://josm.openstreetmap.de/download/josm-latest.jnlp , -Djnlpx.jvm="<java.home>/bin/java"]
Dataset consistency test: No problems found

Plugins:
+ CADTools (1008)
+ PicLayer (35104)
+ SeaMapEditor (34908)
+ apache-commons (35092)
+ apache-http (34908)
+ cadastre-fr (35194)
+ ejml (35122)
+ geotools (35169)
+ jaxb (35014)
+ jna (34908)
+ jts (35122)
+ opendata (35179)
+ reverter (35084)
+ tag2link (35149)
+ utilsplugin2 (35177)

Tagging presets:
+ https://josm.openstreetmap.de/josmfile?page=Presets/Towers&zip=1
+ https://raw.githubusercontent.com/OpenNauticalChart/josm/master/INT-1-preset.xml
+ https://josm.openstreetmap.de/josmfile?page=Presets/Telecom&zip=1

Validator rules:
+ https://github.com/Jungle-Bus/transport_mapcss/raw/gh-pages/transport.validator.zip
+ ${HOME}/Downloads/Rules_Pictures.validator.mapcss

Last errors/warnings:
- W: Identifiant de territoire inconnu: UK
- W: Identifiant de territoire inconnu: UK
- W: Identifiant de territoire inconnu: UK
- W: Identifiant de territoire inconnu: UK
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out

[Klumbumbus]

The value "plain" doesn't make sense, as the value of the key manhole describes to which "infrastructure" (gas, water,...) the manhole leads. If the cover has an inscription or not is independent from this. So we should better warn about man_hole=plain and suggest to use a better value.

[Klumbumbus]

In 15530/josm:

see #18334, see #17947 - warn about manhole=unknown and manhole=plain

[pyrog]

I understand that if there is no inscription on the cover, you couldn't know witch is the infrastructure below.
So that's explain the existence of this value.

[Klumbumbus]

You could know from your local knowledge. If you don't know then you should simply ommit the key manhole=*.

[mdk]

What is about mahole=yes (used 5758 times). This value also describes no infrastructure.

[Klumbumbus]

In 15532/josm:

fix #18334, see #17947 - warn about manhole=yes and don't warn about manhole=plain looks like manhole=drain