[Geocoding] [OpenStreetMap] #5025: Certain house numbers are not found

[OpenStreetMap]

#5025: Certain house numbers are not found
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  Reporter:  thefish1@…  |      Owner:  geocoding@…
      Type:  defect      |     Status:  new
  Priority:  minor       |  Milestone:
 Component:  nominatim   |    Version:
Resolution:              |   Keywords:  housenumbers address
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Comment (by skyper):

 Still a problem even with a simple housenumber on a node.
 https://nominatim.openstreetmap.org/search.php?q=Talhauser+Straße+54a,+Ebringen&viewbox=7.77%2C47.96%2C7.78%2C47.95

 This one works:
 https://nominatim.openstreetmap.org/search.php?q=Talhauser+Straße+16

 Street and associatedStreet relations are one solution within the data but
 they seem to be problematic in other ways.

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Ticket URL: <https://trac.openstreetmap.org/ticket/5025#comment:4>
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