id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
22564	level=* should have numbers only with optional .5 increments	ivanbranco	team	"[https://osmose.openstreetmap.fr/it/issue/d7699408-42c2-ee05-0f86-b51255339e6c Osmose], that uses the [https://josm.openstreetmap.de/browser/josm/trunk/resources/data/validator/numeric.mapcss JOSM numeric validator], complains about ''level=0-4'', but this tagging is allowed in the [https://wiki.openstreetmap.org/wiki/Simple_Indoor_Tagging Simple Indoor Tagging]: ''""Use a semicolon to separate the levels covered by the stairs, escalator, or elevator, or define a level range. For example, level=0;1 or level=0-1 could be used on some stairs that connect levels 0 and 1. Stairs connecting levels 2 and 4 would be tagged level=2;3;4 or level=2-4 – regardless whether level 3 can be accessed from these stairs.""''

So the validator should allow this tagging as well (at least with stairs, escalators and elevators).
"	defect	closed	normal		Core validator		duplicate	josm validator numeric level stairs osmose indoor