[josm-dev] JOSM adds double ways to relations?

[Maarten Deen]

Frederik Ramm wrote:
> Hi,
> 
> Maarten Deen wrote:
>> I admit I haven't used relations in a while, so I'm quite surprised to see that 
>> JOSM now adds a way to a relation again if it was already in the relation. 
>> Previously, ways that were already in a relation did not get added again.
>> I this an intentional change?
> 
> Yes, this is because since 0.6 OpenStreetMap allows the same way to be 
> in the same relation twice (needed e.g. for a bus route that goes down a 
> spur and comes back).
> 
>> So now I've ended up with a relation with almost all ways double. Is there a 
>> quick and easy way to get all double ways removed from this relation?
> 
> Not yet I'm afraid.

That's a serious issue. I've seen that all the double ways appear in the "edit 
relation" box with "->->" or "<-<-" in the "linked" column. But if I then remove 
one of those lines, both ways get removed from the relation.
Surely that is not intentional?

Has someone already though of a "distinct" feature in the relation editor? 
Either a "remove double entries" or also a button "add selected distinct entries"?

I've managed to hack them out. The easy way I guess: select all ways in the 
relation, add some bogus tag, remove all ways from the segment, select all ways 
with the bogus tag and add them to the relation.
But I don't think that should be the way forward.

Maarten