Output of this test should match HTML5 (no strict SGML comment parsing).
Basic comments:
PASSED
Comment series:
PASSED
Dash runs:
PASSED PASSED PASSED
Empty comments:
PASSED PASSED PASSED
Multiple lines:
PASSED
Compatibility:
PASSED PASSED
White space after comment close:
Extra comment after markup declaration close:
FAILED: extra comment end and markup declaration close -->
PASSED (outer nested comment) -->