#data
<isindex>
#errors
(1,9): expected-doctype-but-got-start-tag
(1,9): expected-closing-tag-but-got-eof
#document
| <html>
| <head>
| <body>
| <isindex>
#data
<isindex name="A" action="B" prompt="C" foo="D">
#errors
(1,48): expected-doctype-but-got-start-tag
(1,48): expected-closing-tag-but-got-eof
#document
| <html>
| <head>
| <body>
| <isindex>
| action="B"
| foo="D"
| name="A"
| prompt="C"
#data
<form><isindex>
#errors
(1,6): expected-doctype-but-got-start-tag
(1,15): expected-closing-tag-but-got-eof
#document
| <html>
| <head>
| <body>
| <form>
| <isindex>
#data
<!doctype html><isindex>x</isindex>x
#errors
#document
| <!DOCTYPE html>
| <html>
| <head>
| <body>
| <isindex>
| "x"
| "x"