  x Document
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.35.html:1:1]
 1 | <!doctype html><p><math><mtext><p><h1>
   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.35.html:1:1]
 1 | <!doctype html><p><math><mtext><p><h1>
   : ^^^^^^^^^^^^^^^
   `----
  x DocumentType
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.35.html:1:1]
 1 | <!doctype html><p><math><mtext><p><h1>
   : ^^^^^^^^^^^^^^^
   `----
  x Child
  x Element
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.35.html:1:1]
 1 | <!doctype html><p><math><mtext><p><h1>
   :                ^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.35.html:1:1]
 1 | <!doctype html><p><math><mtext><p><h1>
   :                ^^^^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.35.html:1:1]
 1 | <!doctype html><p><math><mtext><p><h1>
   :                   ^^^^^^^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.35.html:1:1]
 1 | <!doctype html><p><math><mtext><p><h1>
   :                   ^^^^^^^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.35.html:1:1]
 1 | <!doctype html><p><math><mtext><p><h1>
   :                         ^^^^^^^^^^^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.35.html:1:1]
 1 | <!doctype html><p><math><mtext><p><h1>
   :                         ^^^^^^^^^^^^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.35.html:1:1]
 1 | <!doctype html><p><math><mtext><p><h1>
   :                                ^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.35.html:1:1]
 1 | <!doctype html><p><math><mtext><p><h1>
   :                                ^^^
   `----
  x Child
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.35.html:1:1]
 1 | <!doctype html><p><math><mtext><p><h1>
   :                                   ^^^^
   `----
  x Element
   ,-[$DIR/tests/html5lib-tests-fixture/tests19_dat.35.html:1:1]
 1 | <!doctype html><p><math><mtext><p><h1>
   :                                   ^^^^
   `----
