Patch Committed and CF Entry Closed
Fujita pushed the patch on 2025-05-14, confirming the fix is now in the tree. He did not extend the test coverage beyond his v2 patch (i.e., Zhenwei Shang's suggestion for comma/brace characters was not added), though he leaves the door open for future expansion. The PG20-1 commitfest entry (6695) and the associated v19 open item have both been closed.
No further technical discussion — this is a simple commit confirmation message with no new arguments or code changes.