  x Document
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.18.fragment_math_ms.html:1:1]
 1 | <b></b><mglyph/><i></i><malignmark/><u></u><ms/>X
   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
  x Element
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.18.fragment_math_ms.html:1:1]
 1 | <b></b><mglyph/><i></i><malignmark/><u></u><ms/>X
   : ^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.18.fragment_math_ms.html:1:1]
 1 | <b></b><mglyph/><i></i><malignmark/><u></u><ms/>X
   : ^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.18.fragment_math_ms.html:1:1]
 1 | <b></b><mglyph/><i></i><malignmark/><u></u><ms/>X
   :        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.18.fragment_math_ms.html:1:1]
 1 | <b></b><mglyph/><i></i><malignmark/><u></u><ms/>X
   :        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.18.fragment_math_ms.html:1:1]
 1 | <b></b><mglyph/><i></i><malignmark/><u></u><ms/>X
   :                 ^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.18.fragment_math_ms.html:1:1]
 1 | <b></b><mglyph/><i></i><malignmark/><u></u><ms/>X
   :                 ^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.18.fragment_math_ms.html:1:1]
 1 | <b></b><mglyph/><i></i><malignmark/><u></u><ms/>X
   :                        ^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.18.fragment_math_ms.html:1:1]
 1 | <b></b><mglyph/><i></i><malignmark/><u></u><ms/>X
   :                        ^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.18.fragment_math_ms.html:1:1]
 1 | <b></b><mglyph/><i></i><malignmark/><u></u><ms/>X
   :                                     ^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.18.fragment_math_ms.html:1:1]
 1 | <b></b><mglyph/><i></i><malignmark/><u></u><ms/>X
   :                                     ^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.18.fragment_math_ms.html:1:1]
 1 | <b></b><mglyph/><i></i><malignmark/><u></u><ms/>X
   :                                            ^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.18.fragment_math_ms.html:1:1]
 1 | <b></b><mglyph/><i></i><malignmark/><u></u><ms/>X
   :                                            ^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.18.fragment_math_ms.html:1:1]
 1 | <b></b><mglyph/><i></i><malignmark/><u></u><ms/>X
   :                                                 ^
   `----
  x Text
   ,-[$DIR/tests/html5lib-tests-fixture/foreign-fragment_dat.18.fragment_math_ms.html:1:1]
 1 | <b></b><mglyph/><i></i><malignmark/><u></u><ms/>X
   :                                                 ^
   `----
