Tests/feaLib/data/GPOS_2b.fea

@PUNC = [comma semicolon period];

feature kern {
  pos [A] @PUNC 1;
  pos [B C] [comma] 2;
  pos [D E F] [comma] 3;
  pos [D E F] [semicolon period] 4;
  pos [G] @PUNC <5 5 5 5>;
} kern;