Hi,

I tried to make a document in Malayalam, an Indian language. However, the ligatures don't form as expected. 

A minimal example is 

\mainlanguage[ml] 

\definefontfamily [malayalam] [ss] [Rachana] [features=malayalam-one]

\definefontfeature[default] [mode=node,kern=yes, liga=yes,tlig=yes, ccmp=yes,language=dflt, protrusion=quality, expansion=quality]

\setupbodyfont [malayalam]

\starttext

അദ്ധ്യായം

\stoptext

What setting am I missing?

The expected form is show in libre office with the same text and font, attached as an image

The sequence of Malayalam characters used is 

U+0D05 U+0D26 U+0D4D U+0D27 U+0D4DU+0D2F U+0D3E U+0D2F U+0D02

Thanks,

ajith