[postgis-tickets] [PostGIS] #4252: Revise gidx_merge behavior with unknown

[PostGIS]

#4252: Revise gidx_merge behavior with unknown
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  Reporter:  komzpa       |      Owner:  Komzpa
      Type:  enhancement  |     Status:  assigned
  Priority:  medium       |  Milestone:  PostGIS 3.0.0
 Component:  postgis      |    Version:  trunk
Resolution:               |   Keywords:
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Comment (by pramsey):

 We do need it, because otherwise there's no way to handle indexing empty
 geometries (correctly). In fact I think (have to check) our 2d index still
 chuffs on empty because it lacks a good way to flag an empty geometry.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4252#comment:1>
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