#data
<button>1</foo>
#errors
(1,8): expected-doctype-but-got-start-tag
(1,15): unexpected-end-tag
(1,15): expected-closing-tag-but-got-eof
#document
| <html>
| <head>
| <body>
| <button>
| "1"
#data
<foo>1<p>2</foo>
#errors
(1,5): expected-doctype-but-got-start-tag
(1,16): unexpected-end-tag
(1,16): expected-closing-tag-but-got-eof
#document
| <html>
| <head>
| <body>
| <foo>
| "1"
| <p>
| "2"
#data
<dd>1</foo>
#errors
(1,4): expected-doctype-but-got-start-tag
(1,11): unexpected-end-tag
#document
| <html>
| <head>
| <body>
| <dd>
| "1"
#data
<foo>1<dd>2</foo>
#errors
(1,5): expected-doctype-but-got-start-tag
(1,17): unexpected-end-tag
(1,17): expected-closing-tag-but-got-eof
#document
| <html>
| <head>
| <body>
| <foo>
| "1"
| <dd>
| "2"