[Potlatch-dev] [OpenStreetMap] #3495: splitting way doesn't work on loops

[OpenStreetMap]

#3495: splitting way doesn't work on loops
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  Reporter:  tko        |       Owner:  potlatch-dev@…                
      Type:  defect     |      Status:  closed                        
  Priority:  minor      |   Milestone:                                
 Component:  potlatch2  |     Version:                                
Resolution:  fixed      |    Keywords:                                
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Changes (by stevage):

  * status:  new => closed
  * resolution:  => fixed


Comment:

 I've fixed the original bug in [25204]. Now that I've investigated the
 problem a bit, the cause of confusion is distinguishing the *node* (which
 is reused at a junction) from the node *index* (which is unique).

 A P-shaped way of length 10 that joins back to itself on node 5 is
 ambiguous when you click on that node: did you mean index 5, or index 9?
 Fortunately, pressing split resolves the ambiguity: you couldn't have
 wanted to split at index 9.

 In the case of a figure 8 (let's extend the previous example, and loop
 from index 5 back to 0, with a total length of 15), it's still ambiguous:
 when you click the junction and press split, did you mean index 5 or index
 9?

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Ticket URL: <http://trac.openstreetmap.org/ticket/3495#comment:4>
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