[variable-reference-name-substitution.html]
  [var() name comes from another var()]
    expected: FAIL

  [var() name comes from a chain of var()s]
    expected: FAIL

  [invalid substituted name falls back]
    expected: FAIL

  [unset name-providing var() falls back]
    expected: FAIL

  [whitespace around substituted name]
    expected: FAIL

  [name argument substituting to nothing falls back]
    expected: FAIL

  [multi-token substituted name falls back]
    expected: FAIL

  [dimension-token substituted name falls back]
    expected: FAIL

  [string substituted name falls back]
    expected: FAIL

  [-- as substituted name falls back]
    expected: FAIL

  [{}-wrapped literal name argument]
    expected: FAIL

  [{}-wrapped substituted name argument]
    expected: FAIL

  [{}-wrapped name argument with whitespace]
    expected: FAIL

  [{}-wrapped name argument with fallback]
    expected: FAIL

  [var() name comes from attr()]
    expected: FAIL

  [var() name from attr() that is not a name falls back]
    expected: FAIL

  [var() name comes from if()]
    expected: FAIL

  [var() name comes from random-item()]
    expected: FAIL

  [substituted name resolves a registered property]
    expected: FAIL

  [substituted name of a guaranteed-invalid registered property uses the fallback]
    expected: FAIL

  [fallback of an unparsed name is not syntax checked]
    expected: FAIL