[OSM-dev] duplicate segments

[Artem Pavlenko]

Hello ,

As a attempt to imporove text labels rendering on OSM I was looking at the 
original data and I found _lots_ of cases like this:

 <?xml version="1.0" encoding="UTF-8"?>
<osm version="0.3" generator="OpenStreetMap server">
  <way id="4253585" timestamp="2007-01-27 15:00:40">
    <seg id="21468107"/>
    <seg id="21468110"/>
    <seg id="21468110"/>
    <tag k="highway" v="unclassified"/>
    <tag k="created_by" v="YahooApplet 1.0"/>
    <tag k="name" v="Southampton Place"/>
  </way>
</osm>

Note there are duplicate segments. I was trying to use JOSM to fix this but in 
JOSM I can only see two segments for this particular way. 

What is the best way to fix this? 
Can we have some constraint on master OSM database to ensure ways don't have 
duplicate segments? Can OSM editors (prior uploading) check this? 


Cheers,
Artem