[PostGIS] #6132: ST_LineMerge turns a set of fully-noded simple lines into a non-simple line

[PostGIS]

#6132: ST_LineMerge turns a set of fully-noded simple lines into a non-simple line
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  Reporter:  strk     |      Owner:  pramsey
      Type:  defect   |     Status:  new
  Priority:  medium   |  Milestone:  PostGIS 3.7.0
 Component:  postgis  |    Version:  3.6.x
Resolution:           |   Keywords:
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Comment (by strk):

 I've tested the attached testcase linemerge.sql against GEOS-3.10.8dev-
 CAPI-1.16.7 and current GEOS main: the problem persists.
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/6132#comment:1>
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