src/features/ss05-tt.fea


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# /t/t => /t/t.1  (horizonal stem on left side cut short)

featureNames { name "tt ligatures"; };

lookup sub_tt {
  # glyphs that when followed by SUB_TT_SRC triggers substitution of the 2nd glyph
  @SUB_TT_PREV1 = [
    f
    r
    t tbar tcaron tccurl tcedilla
    tcircumflexbelow tcommaaccent tcurl tdieresis
    tdotaccent tdotbelow tlinebelow tpalatalhook trthook
    t.1
  ];
  @SUB_TT_SRC = [
    t
  ];
  sub @SUB_TT_PREV1 @SUB_TT_SRC' lookup sub_tt2;
} sub_tt;