Am Wed, 4 Dec 2019 20:10:13 -0500 schrieb Jairo A. del Rio:
I want to know if it's possible use HarfTeX/LuaHBTeX with ConTeXt (MKIV), ... Although this is pretty easy with LaTeX:
\usepackage{harfload} \setmainfont{font}[RawFeature={mode=harf}]
unrelated to your question but this is no longer the recommended way to use harf mode in latex. After some discussion the latex team decided to build lualatex next year over luahbtex. For testing purpose lualatex-dev already now uses luahbtex. harftex has been archived and its development has stopped. The harfload code has been integrated into luaotfload. Also fontspec has been updated and offers keys to activate harf mode. So your document should look like this: \documentclass{article} \usepackage{fontspec} \setmainfont{font}[Renderer=Harfbuzz] ... This requires a current luaotfload and you should use lualatex-dev to compile it. -- Ulrike Fischer https://www.troubleshooting-tex.de/