Suppress validator warning for amenity within amenity for school

[zelonewolf@…]

In cases where two different schools share a common grounds, it is typical practice to tag the overall grounds with an amenity=school polygon. The overall grounds are either unnamed, or tagged with a name=* for the name of the overall complex. The tagging scheme is supported by renderers as well; Carto renders amenity=school with landuse-style rendering.

Each school is then represented by individual amenity=school nodes with each schools name=* and other details.

This tagging scheme, which is in use, currently raises an "amenity within amenity" warning in the validator. This validator finding has prompted a currently controversial[1] proposal[2] to introduce new tagging, ostensibly for the reason of making the validator finding go away. Rather, it would be more appropriate for JOSM to suppress this warning for cases of amenity=school, amenity=college, and amenity=university -- OR limit the warning to cases where the name=* is identical between the node and the grounds.

A test case is attached demonstrating this behavior.

[1] See proposal talk page and current tagging mailing list discussion
[2] ​https://wiki.openstreetmap.org/wiki/Proposed_features/Multiple_schools_on_one_ground

[zelonewolf@…]

Test case demonstrating the problem.

[zelonewolf@…]

Link to discussion on this topic in the OSM US Slack: ​https://osmus.slack.com/archives/C2VJAJCS0/p1617586445365200

[zelonewolf@…]

Link to discussion on this topic in the Germany forum: ​https://forum.openstreetmap.org/viewtopic.php?id=70642

[skyper]

I think it is much better to have two different tags than starting to allow certain amenity=* inside the same tag. So I am not a fan of changing this rule.