On Tue, Oct 30, 2018 at 10:18 AM Ulrike Fischer <news3@nililand.de> wrote:

According to the xelatex output in the following example both
variants are not correct. What would be needed would be the first
two glyphs from variant 1 (knd2 script) and the third from variant 2
(knda script).

dunno, but to start with at  least I visually see what's going on:

\showotfcomposition{file:notosanskannada-regular.ttf*kannada-testA at 48pt}{-1}{ಕ್ರ}

\showotfcomposition{file:notosanskannada-regular.ttf*kannada-testB at 48pt}{-1}{ಕ್ರ}