[Geocoding] [OpenStreetMap] #4683: limit=1 gives no results. But without this parameter or with limit=2 all is fine

[OpenStreetMap]

#4683: limit=1 gives no results. But without this parameter or with limit=2 all is
fine
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  Reporter:  karussell  |      Owner:  geocoding@…
      Type:  defect     |     Status:  new
  Priority:  major      |  Milestone:
 Component:  nominatim  |    Version:
Resolution:             |   Keywords:
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Comment (by lonvia):

 The linked_place_id is the culprit here. The search for places does not
 take it into account but gets the limit. The subsequent lookup in the
 placex table does look at linked_place_id and reduce the already limited
 results further.

 The easiest fix I can see is to internally work with a limit that is twice
 the requested limit. That should cover the worst case scenario but also
 doubles the work load in the worst case. Any other ideas?

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Ticket URL: <https://trac.openstreetmap.org/ticket/4683#comment:1>
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