ref: 4e4e787ffc668f37caea7ec8cc00e817a4500772
parent: 2876acc163c86ba7cd1603e9b4ea3e2d559a8ae2
author: qwx <qwx@sciops.net>
date: Thu Oct 6 19:54:40 EDT 2022
update ft2 patch; better heuristics for detection, clean up works against latest merged code as well