[PostGIS] #5862: TopoGeo_add* silently corrupt topology: edge crosses edge, mixed face labeling in ring

[PostGIS]

#5862: TopoGeo_add* silently corrupt topology: edge crosses edge, mixed face
labeling in ring
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  Reporter:  Lars Aksel Opsahl  |      Owner:  strk
      Type:  defect             |     Status:  new
  Priority:  high               |  Milestone:
 Component:  topology           |    Version:  master
Resolution:                     |   Keywords:  robustness
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Comment (by strk):

 Maybe a function like `ST_SnappableItems(geom_to_test, snap_target_points,
 snap_tolerance)` could return locations from `geom_to_test` so they could
 be also printed on a map to help users deal with the problem
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5862#comment:16>
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