Dear Sawada-san,
> Thank you for the patch. The changes look reasonable to me. Can we add
> some regression tests for that?
>
Yeah it should be added. I think it is enough to add the first scenario. Done in
100_bugs.pl.
I also ran pgindent/pgperltidy. Because of self-reviewing the version became v4.
Best regards,
Hayato Kuroda
FUJITSU LIMITED