Revert "Merge pull request #68 from tinbotu/fix/only-kumagai-knows"
Revert "Merge pull request #68 from tinbotu/fix/only-kumagai-knows"

This reverts commit f8e5824851493b1f1e2d0d24a5915c1fdc9c60cc, reversing
changes made to 7af7b9d8b8c39eeb92385943556753a9f531900b.

tinbotu/sub,tinbotu/sub