message: Add the no match test case for `====` ligatures
diff: @@ -199,14 +199,7 @@ const firaCases: Context[] = [
  fira('::=', [1614, 1614, 1054], [[0, 3]]),
  fira('.?', [1614, 1086], [[0, 2]]),
  - // TODO: this replacement should be possible with only a context of 0-3, but
  - // there is a zero-length substitution for all four characters to prevent
  - // the ==> sequence from becoming a ligature before we get to the
  - // replacement for the ===. What's unclear is whether it's safe to exclude
  - // zero-length substitutions from the context without breaking certain
  - // glyphs. Leaving this as is for now because it should always yield the
  - // right result (even if it's a little conservative).
  - fira('===>', [1614, 1614, 1486, 1148], [[0, 4]])
  + fira('====', [1146, 1146, 1146, 1146], []), // Expect: No matches
  ];
  const iosevkaCases: Context[] = [
  