- if oldnode.lat != curnode.lat || oldnode.lon != curnode.lon || oldnode.tags != curnode.tags
- # node has changed: if it's in other ways, give it a new id
- if curnode.ways - [way_id]
- id = -1
- reuse = false
- end
+ # if node has changed and it's in other ways, give it a new id
+ if !curnode.ways.all?(way_id) && (oldnode.lat != curnode.lat || oldnode.lon != curnode.lon || oldnode.tags != curnode.tags)
+ id = -1
+ reuse = false