Duplicate target sequence but different replacement glyphs in ligature substitutions in 'dlig' feature: {alefMaksura-ar meem-ar.fina}

hi all, what shall i do in those 2 cases, MakeOTF error.

You’ve got two entries in your dlig feature like this:

sub a b by ligatureA
sub a b by ligatureB

The layout engine wouldn’t know which ligature to use, so it’s an error.

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