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div {
  a: unquote("foo");
  b: unquote("I'm a \"fashion\" \"expert\".");
  c: unquote(\"wha);
  d: unquote("column1\tcolumn2");
  e: unquote(23+1);
  f: percentage(.37);
  g: type-of(null);
  // h: hello + null;
  j: length(null);
  k: nth(1 2 3, 2);
  l: join(a, b, auto);
  m: zip(a b c, 1 2);
  n: min(1, 2%, 3px);
}