id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
18863	split ways: false positive warnings about missing members	skyper	GerdP	"Follow up of #18596:
JeroenHoek in [ticket:18596#comment:93 comment 93]:
> Replying to skyper [ticket:18596#comment:92 comment 92]:
> > Found a false positive: see attached [attachment:josm_18596_false_positive.osm.bz2:ticket:18596 example] and split at node id:4518025255. There are at least the privious and next members present if ordered. Could it be that there is a problem when splitting the first way of a relation when above members are only stops and platforms ?
> 
> I've had a look, and it looks like relation CB 2 has its ways in the wrong order, causing this bug to pop up. It is correct that the split way operation cannot be sure of the direction, but it shouldn't offer to download in this case, because the neighbouring members are already known.
> 
> So two bugs really:
> 
> * Bus route CB 2 here is broken
> * The split-way command should not offer to download anything when the neighbouring members are known, but not connected

I even found a smaller example [attachment:josm_18596_false_positive_small.osm.bz2 file].

==== What steps will reproduce the problem?
1. load attached file
1. split ways at node (id:3872529672)

==== What is the expected result?
No warning as all needed members are downloaded

==== What happens instead?
A warning asking to download additional incomplete members

==== Please provide any additional information below. Attach a screenshot if possible.
The relations might be out of order but then JOSM cannot solve this problem and be silent.
For role `backward`/`forward` no additional members are needed as the proper order can be determined looking at the direction of the way to split.
 
{{{
Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2020-03-04 21:44:53 +0100 (Wed, 04 Mar 2020)
Revision:16038
Build-Date:2020-03-05 02:30:56
URL:https://josm.openstreetmap.de/svn/trunk
}}}
"	defect	closed	normal	20.05	Core	latest	fixed	template_report split way incomplete member warning	JeroenHoek GerdP