Hi, list! I've tested Harfbuzz with some examples from Devanagari and Chinese and I only get garbled text and replacement characters. MWE:

\usemodule[fonts-plugins]
\definefontfeature[harf]
[mode=plug,
features=harfbuzz,
shaper=native,
% script=deva ?
]
\starttext

% Other fonts make no difference

\definedfont[file:FreeSerif.ttf*harf at 12pt]
\startlines
एक
दश
शत
सहस्र
लक्ष
कोटि
शङ्कु
महाशङ्कु
वृन्द
महावृन्द
पद्म
महापद्म
खर्व
महाखर्व
समुद्र
ओघ
महौघ
\stoplines
\stoptext

And no, my question isn't about not using ConTeXt "devanagari-one" or "devanagari-two" features. Overall, Indic scripts just worked most times once the Harfbuzz plugin was enabled (either using a custom libharfbuzz or the system's one). Thank you in advance.

Jairo