[postgis-tickets] [PostGIS] #4939: Add possibility to merge lines without changing order of points.

[PostGIS]

#4939: Add possibility to merge lines without changing order of points.
-------------------------+---------------------------
 Reporter:  evgen        |      Owner:  pramsey
     Type:  enhancement  |     Status:  new
 Priority:  medium       |  Milestone:  PostGIS 3.1.3
Component:  postgis      |    Version:  2.5.x
 Keywords:               |
-------------------------+---------------------------
 There is a great function ST_LineMerge. But it could reverse lines in
 multiline to connect them. E.g.

 `
 SELECT ST_AsText(ST_LineMerge(
 ST_GeomFromText('MULTILINESTRING((-29 -27,1 2),(-29 -27,-45 -33),(-45
 -33,-46 -32))'))
 );
 `
 returns `LINESTRING(1 2,-29 -27,-45 -33,-46 -32)` but it could be
 `MULTILINESTRING((-29 -27,1 2),(-29 -27,-45 -33,-46 -32))'`.

 I process one way roads. When I merge them I'd like to keep point order to
 know original direction of that segments.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4939>
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