Li-Fan Chen says to YSITD https://www.ptt.cc/bbs/gossiping/M.1539511358.A.6F0.html?fbclid=IwAR1LDME0iVblUrrRFuX-aO-kY1oxDlUkWiTXbDmj-DP-jzzV37FefuVNIIo 這程式的作者一定是 GitHub user