id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
20019	Warn about direction=forward/backward on invalid nodes.	skyper	GerdP	"==== What steps will reproduce the problem?
1. Have an child end node or a child middle node of more than one way with `[high|rail|water]way]` and `^[.+:]?direction$=[forward|backward]`
1. run validator

==== What is the expected result?
A warning about invalid values of direction for the geometry

==== What happens instead?
No warning

==== Please provide any additional information below. Attach a screenshot if possible.
See #20013 for the origin.

Replying to [ticket:20013#comment:8 Klumbumbus]:
> I think the validator should warn if a node with direction=* is
> - on a ways first/last node (possible in mapcss)
> - belongs to two different highway=* ways (not possible in mapcss)

* Only warn about values `forward` and `backward`. Other values are valid.
* Include `railway` and `waterway` in both test.

{{{
Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2020-10-31 01:21:14 +0100 (Sat, 31 Oct 2020)
Revision:17288
Build-Date:2020-10-31 02:30:50
URL:https://josm.openstreetmap.de/svn/trunk
}}}"	enhancement	assigned	normal	20.11	Core validator			template_report direction node