[GH-2137] bug: Make ST_LineMerge return merged lines instead of original when there are more than one #2469
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petern48
changed the title
jiayuasu
approved these changes
Nov 2, 2025
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Is this PR related to a ticket?
[GH-XXX] my subject. Closes JTS's org.locationtech.jts.operation.linemerge.LineSequencer is useful #2137What changes were proposed in this PR?
The previous behavior would return the original input if the merged result wasn't a single linestring. This PR returns the merged linestrings even if there is more than one, which corresponds to PostGIS behavior.
How was this patch tested?
Fixed old tests and added a new one.
Did this PR include necessary documentation updates?