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