\csname ifharfloadloaded\endcsname \let\ifharfloadloaded\endinput \ifdefined\ProvidesPackage \RequirePackage{luaotfload} \ProvidesPackage{harfload}[2019/08/10 v0.4.0 Unicode text layout system] \else \input luaotfload.sty \fi \directlua{require('harf-luaotfload')}