+
+#data
+
+|
+|
+|
+|
+|
+
+#data
+
+|
+|
+|
+|
+|
+|
+|
+|
+
+#data
+123
45
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,30): unexpected-end-tag
+(1,35): adoption-agency-1.3
+#document
+|
+|
+|
+|
+| "1"
+|
+| id="A"
+| "2"
+|
+| id="B"
+| "3"
+|
+| id="A"
+|
+| id="B"
+| "4"
+|
+| id="B"
+| "5"
+
+#data
+
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,10): unexpected-start-tag-implies-table-voodoo
+(1,11): unexpected-character-implies-table-voodoo
+(1,15): unexpected-cell-in-table-body
+(1,30): unexpected-implied-end-tag-in-table-view
+#document
+|
+|
+|
+|
+| "1"
+|
+| "3"
+|
+|
+|
+|
+| "2"
+
+#data
+
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,8): unexpected-character-implies-table-voodoo
+(1,12): unexpected-cell-in-table-body
+(1,22): unexpected-character-implies-table-voodoo
+#document
+|
+|
+|
+| "AC"
+|
+#errors
+(1,9): expected-doctype-but-got-end-tag
+(1,9): unexpected-end-tag-before-html
+(1,13): unexpected-end-tag-before-html
+(1,18): unexpected-end-tag-before-html
+(1,22): unexpected-end-tag-before-html
+(1,26): unexpected-end-tag-before-html
+(1,35): unexpected-end-tag-before-html
+(1,39): unexpected-end-tag-before-html
+(1,47): unexpected-end-tag-before-html
+(1,52): unexpected-end-tag-before-html
+(1,58): unexpected-end-tag-before-html
+(1,64): unexpected-end-tag-before-html
+(1,72): unexpected-end-tag-before-html
+(1,79): unexpected-end-tag-before-html
+(1,88): unexpected-end-tag-before-html
+(1,93): unexpected-end-tag-before-html
+(1,98): unexpected-end-tag-before-html
+(1,103): unexpected-end-tag-before-html
+(1,108): unexpected-end-tag-before-html
+(1,113): unexpected-end-tag-before-html
+(1,118): unexpected-end-tag-before-html
+(1,130): unexpected-end-tag-after-body
+(1,130): unexpected-end-tag-treated-as
+(1,134): unexpected-end-tag
+(1,140): unexpected-end-tag
+(1,148): unexpected-end-tag
+(1,155): unexpected-end-tag
+(1,163): unexpected-end-tag
+(1,172): unexpected-end-tag
+(1,180): unexpected-end-tag
+(1,185): unexpected-end-tag
+(1,190): unexpected-end-tag
+(1,195): unexpected-end-tag
+(1,203): unexpected-end-tag
+(1,210): unexpected-end-tag
+(1,217): unexpected-end-tag
+(1,225): unexpected-end-tag
+(1,230): unexpected-end-tag
+(1,238): unexpected-end-tag
+(1,244): unexpected-end-tag
+(1,251): unexpected-end-tag
+(1,258): unexpected-end-tag
+(1,269): unexpected-end-tag
+(1,279): unexpected-end-tag
+(1,287): unexpected-end-tag
+(1,296): unexpected-end-tag
+(1,300): unexpected-end-tag
+(1,305): unexpected-end-tag
+(1,310): unexpected-end-tag
+(1,320): unexpected-end-tag
+(1,331): unexpected-end-tag
+(1,339): unexpected-end-tag
+(1,347): unexpected-end-tag
+(1,355): unexpected-end-tag
+(1,365): end-tag-too-early
+(1,378): end-tag-too-early
+(1,387): end-tag-too-early
+(1,393): end-tag-too-early
+(1,399): end-tag-too-early
+(1,404): end-tag-too-early
+(1,415): end-tag-too-early
+(1,425): end-tag-too-early
+(1,432): end-tag-too-early
+(1,437): end-tag-too-early
+(1,442): end-tag-too-early
+(1,447): unexpected-end-tag
+(1,454): unexpected-end-tag
+(1,460): unexpected-end-tag
+(1,467): unexpected-end-tag
+(1,476): end-tag-too-early
+(1,486): end-tag-too-early
+(1,495): end-tag-too-early
+(1,513): expected-eof-but-got-end-tag
+(1,513): unexpected-end-tag
+(1,520): unexpected-end-tag
+(1,529): unexpected-end-tag
+(1,537): unexpected-end-tag
+(1,547): unexpected-end-tag
+(1,557): unexpected-end-tag
+(1,568): unexpected-end-tag
+(1,579): unexpected-end-tag
+(1,590): unexpected-end-tag
+(1,599): unexpected-end-tag
+(1,611): unexpected-end-tag
+(1,622): unexpected-end-tag
+#document
+|
+|
+|
+|
+
+#data
+
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,20): unexpected-end-tag-implies-table-voodoo
+(1,20): unexpected-end-tag
+(1,24): unexpected-end-tag-implies-table-voodoo
+(1,24): unexpected-end-tag
+(1,29): unexpected-end-tag-implies-table-voodoo
+(1,29): unexpected-end-tag
+(1,33): unexpected-end-tag-implies-table-voodoo
+(1,33): unexpected-end-tag
+(1,37): unexpected-end-tag-implies-table-voodoo
+(1,37): unexpected-end-tag
+(1,46): unexpected-end-tag-implies-table-voodoo
+(1,46): unexpected-end-tag
+(1,50): unexpected-end-tag-implies-table-voodoo
+(1,50): unexpected-end-tag
+(1,58): unexpected-end-tag-implies-table-voodoo
+(1,58): unexpected-end-tag
+(1,63): unexpected-end-tag-implies-table-voodoo
+(1,63): unexpected-end-tag
+(1,69): unexpected-end-tag-implies-table-voodoo
+(1,69): end-tag-too-early
+(1,75): unexpected-end-tag-implies-table-voodoo
+(1,75): unexpected-end-tag
+(1,83): unexpected-end-tag-implies-table-voodoo
+(1,83): unexpected-end-tag
+(1,90): unexpected-end-tag-implies-table-voodoo
+(1,90): unexpected-end-tag
+(1,99): unexpected-end-tag-implies-table-voodoo
+(1,99): unexpected-end-tag
+(1,104): unexpected-end-tag-implies-table-voodoo
+(1,104): end-tag-too-early
+(1,109): unexpected-end-tag-implies-table-voodoo
+(1,109): end-tag-too-early
+(1,114): unexpected-end-tag-implies-table-voodoo
+(1,114): end-tag-too-early
+(1,119): unexpected-end-tag-implies-table-voodoo
+(1,119): end-tag-too-early
+(1,124): unexpected-end-tag-implies-table-voodoo
+(1,124): end-tag-too-early
+(1,129): unexpected-end-tag-implies-table-voodoo
+(1,129): end-tag-too-early
+(1,136): unexpected-end-tag-in-table-row
+(1,141): unexpected-end-tag-implies-table-voodoo
+(1,141): unexpected-end-tag-treated-as
+(1,145): unexpected-end-tag-implies-table-voodoo
+(1,145): unexpected-end-tag
+(1,151): unexpected-end-tag-implies-table-voodoo
+(1,151): unexpected-end-tag
+(1,159): unexpected-end-tag-implies-table-voodoo
+(1,159): unexpected-end-tag
+(1,166): unexpected-end-tag-implies-table-voodoo
+(1,166): unexpected-end-tag
+(1,174): unexpected-end-tag-implies-table-voodoo
+(1,174): unexpected-end-tag
+(1,183): unexpected-end-tag-implies-table-voodoo
+(1,183): unexpected-end-tag
+(1,196): unexpected-end-tag
+(1,201): unexpected-end-tag
+(1,206): unexpected-end-tag
+(1,214): unexpected-end-tag
+(1,221): unexpected-end-tag
+(1,228): unexpected-end-tag
+(1,236): unexpected-end-tag
+(1,241): unexpected-end-tag
+(1,249): unexpected-end-tag
+(1,255): unexpected-end-tag
+(1,262): unexpected-end-tag
+(1,269): unexpected-end-tag
+(1,280): unexpected-end-tag
+(1,290): unexpected-end-tag
+(1,298): unexpected-end-tag
+(1,307): unexpected-end-tag
+(1,311): unexpected-end-tag
+(1,316): unexpected-end-tag
+(1,321): unexpected-end-tag
+(1,331): unexpected-end-tag
+(1,342): unexpected-end-tag
+(1,350): unexpected-end-tag
+(1,358): unexpected-end-tag
+(1,366): unexpected-end-tag
+(1,376): end-tag-too-early
+(1,389): end-tag-too-early
+(1,398): end-tag-too-early
+(1,404): end-tag-too-early
+(1,410): end-tag-too-early
+(1,415): end-tag-too-early
+(1,426): end-tag-too-early
+(1,436): end-tag-too-early
+(1,443): end-tag-too-early
+(1,448): end-tag-too-early
+(1,453): end-tag-too-early
+(1,458): unexpected-end-tag
+(1,465): unexpected-end-tag
+(1,471): unexpected-end-tag
+(1,478): unexpected-end-tag
+(1,487): end-tag-too-early
+(1,497): end-tag-too-early
+(1,506): end-tag-too-early
+(1,524): expected-eof-but-got-end-tag
+(1,524): unexpected-end-tag
+(1,531): unexpected-end-tag
+(1,540): unexpected-end-tag
+(1,548): unexpected-end-tag
+(1,558): unexpected-end-tag
+(1,568): unexpected-end-tag
+(1,579): unexpected-end-tag
+(1,590): unexpected-end-tag
+(1,601): unexpected-end-tag
+(1,610): unexpected-end-tag
+(1,622): unexpected-end-tag
+(1,633): unexpected-end-tag
+#document
+|
+|
+|
+|
+|
+|
+|
+
+#data
+
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(1,10): eof-in-frameset
+#document
+|
+|
+|
diff --git a/tests/data/tree-construction/tests10.dat b/tests/data/tree-construction/tests10.dat
new file mode 100644
index 00000000..3b311e4e
--- /dev/null
+++ b/tests/data/tree-construction/tests10.dat
@@ -0,0 +1,853 @@
+#data
+
+
+#data
+
+|
+
+#data
+
+
+#data
+
+|
+
+#data
+
+|
+|
+
+#data
+
+#errors
+(1,33) foster-parenting-start-tag
+#document
+|
+|
+|
+|
+|
+|
+
+#data
+
+#errors
+(1,33) foster-parenting-start-tag
+#document
+|
+|
+|
+|
+|
+|
+| "foo"
+|
+
+#data
+
+#errors
+(1,33) foster-parenting-start-tag
+#document
+|
+|
+|
+|
+|
+|
+| "foo"
+|
+| "bar"
+|
+
+#data
+
+#errors
+(1,40) foster-parenting-start-tag
+#document
+|
+|
+|
+|
+|
+|
+| "foo"
+|
+| "bar"
+|
+|
+
+#data
+
+#errors
+(1,44) foster-parenting-start-tag
+#document
+|
+|
+|
+|
+|
+|
+| "foo"
+|
+| "bar"
+|
+|
+|
+
+#data
+
+#errors
+#document
+|
+|
+|
+|
+|
+|
+|
+|
+|
+|
+| "foo"
+|
+| "bar"
+
+#data
+
+#errors
+#document
+|
+|
+|
+|
+|
+|
+|
+|
+|
+|
+| "foo"
+|
+| "bar"
+|
+| "baz"
+
+#data
+
+#errors
+#document
+|
+|
+|
+|
+|
+|
+|
+|
+| "foo"
+|
+| "bar"
+|
+| "baz"
+
+#data
+
quux
+#errors
+(1,65) unexpected-html-element-in-foreign-content
+#document
+|
+|
+|
+|
+|
+|
+|
+|
+| "foo"
+|
+| "bar"
+|
+| "baz"
+|
+| "quux"
+
+#data
+
quux
+#errors
+(1,73) unexpected-end-tag
+(1,73) expected-one-end-tag-but-got-another
+#document
+|
+|
+|
+|
+|
+|
+|
+|
+| "foo"
+|
+| "bar"
+| "baz"
+|
+| "quux"
+
+#data
+
quux
+#errors
+(1,43) foster-parenting-start-tag svg
+(1,66) unexpected HTML-like start tag token in foreign content
+(1,66) foster-parenting-start-tag
+(1,67) foster-parenting-character
+(1,68) foster-parenting-character
+(1,69) foster-parenting-character
+#document
+|
+|
+|
+|
+|
+|
+| "foo"
+|
+| "bar"
+|
+| "baz"
+|
+|
+|
+| "quux"
+
+#data
+
quux
+#errors
+1:70: ERROR: Start tag 'p' isn't allowed here. Currently open tags: html, body, table, tbody, tr, td, select, svg.
+1:76: ERROR: End tag 'table' isn't allowed here. Currently open tags: html, body, table, tbody, tr, td, select.
+#document
+|
+|
+|
+|
+|
+|
+|
+|
+|
+|
+|
+| "foo"
+|
+| "bar"
+|
+| "baz"
+|
+| "quux"
+
+#data
+
quux
+#errors
+1:29: ERROR: Start tag 'select' isn't allowed here. Currently open tags: html, body, table.
+1:37: ERROR: Start tag 'svg' isn't allowed here. Currently open tags: html, body, table, select.
+1:62: ERROR: Start tag 'p' isn't allowed here. Currently open tags: html, body, table, select, svg.
+1:62: ERROR: Start tag 'p' isn't allowed here. Currently open tags: html, body, table, select.
+1:65: ERROR: Character tokens aren't legal here
+1:66: ERROR: Character tokens aren't legal here
+1:67: ERROR: Character tokens aren't legal here
+#document
+|
+|
+|
+|
+|
+|
+|
+| "foo"
+|
+| "bar"
+|
+| "baz"
+|
+|
+| "quux"
+
+#data
+
foo bar baz
+#errors
+(1,40) expected-eof-but-got-start-tag
+(1,63) unexpected-html-element-in-foreign-content
+#document
+|
+|
+|
+|
+|
+|
+| "foo"
+|
+| "bar"
+|
+| "baz"
+
+#data
+
foo bar baz
+#errors
+(1,33) unexpected-start-tag-after-body
+(1,56) unexpected-html-element-in-foreign-content
+#document
+|
+|
+|
+|
+|
+|
+| "foo"
+|
+| "bar"
+|
+| "baz"
+
+#data
+
+#errors
+(1,30) unexpected-start-tag-in-frameset
+(1,33) unexpected-start-tag-in-frameset
+(1,37) unexpected-end-tag-in-frameset
+(1,40) unexpected-start-tag-in-frameset
+(1,44) unexpected-end-tag-in-frameset
+(1,47) unexpected-start-tag-in-frameset
+(1,53) unexpected-start-tag-in-frameset
+(1,53) eof-in-frameset
+#document
+|
+|
+|
+|
+
+#data
+
+#errors
+(1,41) unexpected-start-tag-after-frameset
+(1,44) unexpected-start-tag-after-frameset
+(1,48) unexpected-end-tag-after-frameset
+(1,51) unexpected-start-tag-after-frameset
+(1,55) unexpected-end-tag-after-frameset
+(1,58) unexpected-start-tag-after-frameset
+(1,64) unexpected-start-tag-after-frameset
+#document
+|
+|
+|
+|
+
+#data
+
+| xlink href="foo"
+
+#data
+
+|
+| xlink href="foo"
+| xml lang="en"
+
+#data
+
+|
+| xlink href="foo"
+| xml lang="en"
+
+#data
+
+|
+| xlink href="foo"
+| xml lang="en"
+| "bar"
+
+#data
+
+#errors
+(1,5) expected-doctype-but-got-start-tag
+(1,12) unexpected-end-tag
+(1,12) unexpected-end-tag
+(1,12) expected-closing-tag-but-got-eof
+#document
+|
+|
+|
+|
+
+#data
+
a
+#errors
+(1,5) expected-doctype-but-got-start-tag
+(1,16) unexpected-end-tag
+(1,16) end-tag-too-early
+#document
+|
+|
+|
+|
+|
+| "a"
+
+#data
+a
+#errors
+(1,5) expected-doctype-but-got-start-tag
+(1,22) unexpected-end-tag
+(1,22) end-tag-too-early
+#document
+|
+|
+|
+|
+|
+|
+| "a"
+
+#data
+
+#errors
+(1,5) expected-doctype-but-got-start-tag
+(1,22) unexpected-end-tag
+(1,28) expected-closing-tag-but-got-eof
+#document
+|
+|
+|
+|
+|
+|
+|
+
+#data
+a
+#errors
+(1,5) expected-doctype-but-got-start-tag
+(1,43) unexpected-end-tag
+(1,43) end-tag-too-early
+(1,44) expected-closing-tag-but-got-eof
+#document
+|
+|
+|
+|
+|
+|
+|
+|
+| "a"
+
+#data
+a
+#errors
+(1,5) expected-doctype-but-got-start-tag
+(1,40) end-tag-too-early
+(1,41) expected-closing-tag-but-got-eof
+#document
+|
+|
+|
+|
+|
+|
+|
+|
+| "a"
+
+#data
+a
+#errors
+(1,40) unexpected-html-element-in-foreign-content
+(1,41) expected-closing-tag-but-got-eof
+#document
+|
+|
+|
+|
+|
+|
+|
+|
+|
+| "a"
+
+#data
+a
+#errors
+(1,35) unexpected-html-element-in-foreign-content
+(1,36) expected-closing-tag-but-got-eof
+#document
+|
+|
+|
+|
+|
+|
+|
+|
+| "a"
+
+#data
+
+#errors
+(1,32) expected-closing-tag-but-got-eof
+#document
+|
+|
+|
+|
+|
+|
+|
+|
+
+#data
+
<p>
+#errors
+(1,33) expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <svg svg>
+| <svg title>
+| <p>
+
+#data
+<div><svg><path><foreignObject><p></foreignObject><p>
+#errors
+(1,5) expected-doctype-but-got-start-tag
+(1,50) unexpected-end-tag
+(1,53) expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <div>
+| <svg svg>
+| <svg path>
+| <svg foreignObject>
+| <p>
+| <p>
+
+#data
+<math><mi><div><object><div><span></span></div></object></div></mi><mi>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,71) expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <math math>
+| <math mi>
+| <div>
+| <object>
+| <div>
+| <span>
+| <math mi>
+
+#data
+<math><mi><svg><foreignObject><div><div></div></div></foreignObject></svg></mi><mi>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,83) expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <math math>
+| <math mi>
+| <svg svg>
+| <svg foreignObject>
+| <div>
+| <div>
+| <math mi>
+
+#data
+<svg><script></script><path>
+#errors
+(1,5) expected-doctype-but-got-start-tag
+(1,28) expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <svg svg>
+| <svg script>
+| <svg path>
+
+#data
+<table><svg></svg><tr>
+#errors
+(1,7) expected-doctype-but-got-start-tag
+(1,12) unexpected-start-tag-implies-table-voodoo
+(1,22) eof-in-table
+#document
+| <html>
+| <head>
+| <body>
+| <svg svg>
+| <table>
+| <tbody>
+| <tr>
+
+#data
+<math><mi><mglyph>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,18) expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <math math>
+| <math mi>
+| <math mglyph>
+
+#data
+<math><mi><malignmark>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,22) expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <math math>
+| <math mi>
+| <math malignmark>
+
+#data
+<math><mo><mglyph>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,18) expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <math math>
+| <math mo>
+| <math mglyph>
+
+#data
+<math><mo><malignmark>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,22) expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <math math>
+| <math mo>
+| <math malignmark>
+
+#data
+<math><mn><mglyph>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,18) expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <math math>
+| <math mn>
+| <math mglyph>
+
+#data
+<math><mn><malignmark>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,22) expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <math math>
+| <math mn>
+| <math malignmark>
+
+#data
+<math><ms><mglyph>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,18) expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <math math>
+| <math ms>
+| <math mglyph>
+
+#data
+<math><ms><malignmark>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,22) expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <math math>
+| <math ms>
+| <math malignmark>
+
+#data
+<math><mtext><mglyph>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,21) expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <math math>
+| <math mtext>
+| <math mglyph>
+
+#data
+<math><mtext><malignmark>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,25) expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <math math>
+| <math mtext>
+| <math malignmark>
+
+#data
+<math><annotation-xml><svg></svg></annotation-xml><mi>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,54) expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <math math>
+| <math annotation-xml>
+| <svg svg>
+| <math mi>
+
+#data
+<math><annotation-xml><svg><foreignObject><div><math><mi></mi></math><span></span></div></foreignObject><path></path></svg></annotation-xml><mi>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,144) expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <math math>
+| <math annotation-xml>
+| <svg svg>
+| <svg foreignObject>
+| <div>
+| <math math>
+| <math mi>
+| <span>
+| <svg path>
+| <math mi>
+
+#data
+<math><annotation-xml><svg><foreignObject><math><mi><svg></svg></mi><mo></mo></math><span></span></foreignObject><path></path></svg></annotation-xml><mi>
+#errors
+(1,6) expected-doctype-but-got-start-tag
+(1,153) expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <math math>
+| <math annotation-xml>
+| <svg svg>
+| <svg foreignObject>
+| <math math>
+| <math mi>
+| <svg svg>
+| <math mo>
+| <span>
+| <svg path>
+| <math mi>
diff --git a/tests/data/tree-construction/tests11.dat b/tests/data/tree-construction/tests11.dat
new file mode 100644
index 00000000..b9901e79
--- /dev/null
+++ b/tests/data/tree-construction/tests11.dat
@@ -0,0 +1,523 @@
+#data
+<!DOCTYPE html><body><svg attributeName='' attributeType='' baseFrequency='' baseProfile='' calcMode='' clipPathUnits='' diffuseConstant='' edgeMode='' filterUnits='' glyphRef='' gradientTransform='' gradientUnits='' kernelMatrix='' kernelUnitLength='' keyPoints='' keySplines='' keyTimes='' lengthAdjust='' limitingConeAngle='' markerHeight='' markerUnits='' markerWidth='' maskContentUnits='' maskUnits='' numOctaves='' pathLength='' patternContentUnits='' patternTransform='' patternUnits='' pointsAtX='' pointsAtY='' pointsAtZ='' preserveAlpha='' preserveAspectRatio='' primitiveUnits='' refX='' refY='' repeatCount='' repeatDur='' requiredExtensions='' requiredFeatures='' specularConstant='' specularExponent='' spreadMethod='' startOffset='' stdDeviation='' stitchTiles='' surfaceScale='' systemLanguage='' tableValues='' targetX='' targetY='' textLength='' viewBox='' viewTarget='' xChannelSelector='' yChannelSelector='' zoomAndPan=''></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <svg svg>
+| attributeName=""
+| attributeType=""
+| baseFrequency=""
+| baseProfile=""
+| calcMode=""
+| clipPathUnits=""
+| diffuseConstant=""
+| edgeMode=""
+| filterUnits=""
+| glyphRef=""
+| gradientTransform=""
+| gradientUnits=""
+| kernelMatrix=""
+| kernelUnitLength=""
+| keyPoints=""
+| keySplines=""
+| keyTimes=""
+| lengthAdjust=""
+| limitingConeAngle=""
+| markerHeight=""
+| markerUnits=""
+| markerWidth=""
+| maskContentUnits=""
+| maskUnits=""
+| numOctaves=""
+| pathLength=""
+| patternContentUnits=""
+| patternTransform=""
+| patternUnits=""
+| pointsAtX=""
+| pointsAtY=""
+| pointsAtZ=""
+| preserveAlpha=""
+| preserveAspectRatio=""
+| primitiveUnits=""
+| refX=""
+| refY=""
+| repeatCount=""
+| repeatDur=""
+| requiredExtensions=""
+| requiredFeatures=""
+| specularConstant=""
+| specularExponent=""
+| spreadMethod=""
+| startOffset=""
+| stdDeviation=""
+| stitchTiles=""
+| surfaceScale=""
+| systemLanguage=""
+| tableValues=""
+| targetX=""
+| targetY=""
+| textLength=""
+| viewBox=""
+| viewTarget=""
+| xChannelSelector=""
+| yChannelSelector=""
+| zoomAndPan=""
+
+#data
+<!DOCTYPE html><BODY><SVG ATTRIBUTENAME='' ATTRIBUTETYPE='' BASEFREQUENCY='' BASEPROFILE='' CALCMODE='' CLIPPATHUNITS='' DIFFUSECONSTANT='' EDGEMODE='' FILTERUNITS='' GLYPHREF='' GRADIENTTRANSFORM='' GRADIENTUNITS='' KERNELMATRIX='' KERNELUNITLENGTH='' KEYPOINTS='' KEYSPLINES='' KEYTIMES='' LENGTHADJUST='' LIMITINGCONEANGLE='' MARKERHEIGHT='' MARKERUNITS='' MARKERWIDTH='' MASKCONTENTUNITS='' MASKUNITS='' NUMOCTAVES='' PATHLENGTH='' PATTERNCONTENTUNITS='' PATTERNTRANSFORM='' PATTERNUNITS='' POINTSATX='' POINTSATY='' POINTSATZ='' PRESERVEALPHA='' PRESERVEASPECTRATIO='' PRIMITIVEUNITS='' REFX='' REFY='' REPEATCOUNT='' REPEATDUR='' REQUIREDEXTENSIONS='' REQUIREDFEATURES='' SPECULARCONSTANT='' SPECULAREXPONENT='' SPREADMETHOD='' STARTOFFSET='' STDDEVIATION='' STITCHTILES='' SURFACESCALE='' SYSTEMLANGUAGE='' TABLEVALUES='' TARGETX='' TARGETY='' TEXTLENGTH='' VIEWBOX='' VIEWTARGET='' XCHANNELSELECTOR='' YCHANNELSELECTOR='' ZOOMANDPAN=''></SVG>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <svg svg>
+| attributeName=""
+| attributeType=""
+| baseFrequency=""
+| baseProfile=""
+| calcMode=""
+| clipPathUnits=""
+| diffuseConstant=""
+| edgeMode=""
+| filterUnits=""
+| glyphRef=""
+| gradientTransform=""
+| gradientUnits=""
+| kernelMatrix=""
+| kernelUnitLength=""
+| keyPoints=""
+| keySplines=""
+| keyTimes=""
+| lengthAdjust=""
+| limitingConeAngle=""
+| markerHeight=""
+| markerUnits=""
+| markerWidth=""
+| maskContentUnits=""
+| maskUnits=""
+| numOctaves=""
+| pathLength=""
+| patternContentUnits=""
+| patternTransform=""
+| patternUnits=""
+| pointsAtX=""
+| pointsAtY=""
+| pointsAtZ=""
+| preserveAlpha=""
+| preserveAspectRatio=""
+| primitiveUnits=""
+| refX=""
+| refY=""
+| repeatCount=""
+| repeatDur=""
+| requiredExtensions=""
+| requiredFeatures=""
+| specularConstant=""
+| specularExponent=""
+| spreadMethod=""
+| startOffset=""
+| stdDeviation=""
+| stitchTiles=""
+| surfaceScale=""
+| systemLanguage=""
+| tableValues=""
+| targetX=""
+| targetY=""
+| textLength=""
+| viewBox=""
+| viewTarget=""
+| xChannelSelector=""
+| yChannelSelector=""
+| zoomAndPan=""
+
+#data
+<!DOCTYPE html><body><svg attributename='' attributetype='' basefrequency='' baseprofile='' calcmode='' clippathunits='' diffuseconstant='' edgemode='' filterunits='' filterres='' glyphref='' gradienttransform='' gradientunits='' kernelmatrix='' kernelunitlength='' keypoints='' keysplines='' keytimes='' lengthadjust='' limitingconeangle='' markerheight='' markerunits='' markerwidth='' maskcontentunits='' maskunits='' numoctaves='' pathlength='' patterncontentunits='' patterntransform='' patternunits='' pointsatx='' pointsaty='' pointsatz='' preservealpha='' preserveaspectratio='' primitiveunits='' refx='' refy='' repeatcount='' repeatdur='' requiredextensions='' requiredfeatures='' specularconstant='' specularexponent='' spreadmethod='' startoffset='' stddeviation='' stitchtiles='' surfacescale='' systemlanguage='' tablevalues='' targetx='' targety='' textlength='' viewbox='' viewtarget='' xchannelselector='' ychannelselector='' zoomandpan=''></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <svg svg>
+| attributeName=""
+| attributeType=""
+| baseFrequency=""
+| baseProfile=""
+| calcMode=""
+| clipPathUnits=""
+| diffuseConstant=""
+| edgeMode=""
+| filterUnits=""
+| filterres=""
+| glyphRef=""
+| gradientTransform=""
+| gradientUnits=""
+| kernelMatrix=""
+| kernelUnitLength=""
+| keyPoints=""
+| keySplines=""
+| keyTimes=""
+| lengthAdjust=""
+| limitingConeAngle=""
+| markerHeight=""
+| markerUnits=""
+| markerWidth=""
+| maskContentUnits=""
+| maskUnits=""
+| numOctaves=""
+| pathLength=""
+| patternContentUnits=""
+| patternTransform=""
+| patternUnits=""
+| pointsAtX=""
+| pointsAtY=""
+| pointsAtZ=""
+| preserveAlpha=""
+| preserveAspectRatio=""
+| primitiveUnits=""
+| refX=""
+| refY=""
+| repeatCount=""
+| repeatDur=""
+| requiredExtensions=""
+| requiredFeatures=""
+| specularConstant=""
+| specularExponent=""
+| spreadMethod=""
+| startOffset=""
+| stdDeviation=""
+| stitchTiles=""
+| surfaceScale=""
+| systemLanguage=""
+| tableValues=""
+| targetX=""
+| targetY=""
+| textLength=""
+| viewBox=""
+| viewTarget=""
+| xChannelSelector=""
+| yChannelSelector=""
+| zoomAndPan=""
+
+#data
+<!DOCTYPE html><body><math attributeName='' attributeType='' baseFrequency='' baseProfile='' calcMode='' clipPathUnits='' diffuseConstant='' edgeMode='' filterUnits='' glyphRef='' gradientTransform='' gradientUnits='' kernelMatrix='' kernelUnitLength='' keyPoints='' keySplines='' keyTimes='' lengthAdjust='' limitingConeAngle='' markerHeight='' markerUnits='' markerWidth='' maskContentUnits='' maskUnits='' numOctaves='' pathLength='' patternContentUnits='' patternTransform='' patternUnits='' pointsAtX='' pointsAtY='' pointsAtZ='' preserveAlpha='' preserveAspectRatio='' primitiveUnits='' refX='' refY='' repeatCount='' repeatDur='' requiredExtensions='' requiredFeatures='' specularConstant='' specularExponent='' spreadMethod='' startOffset='' stdDeviation='' stitchTiles='' surfaceScale='' systemLanguage='' tableValues='' targetX='' targetY='' textLength='' viewBox='' viewTarget='' xChannelSelector='' yChannelSelector='' zoomAndPan=''></math>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <math math>
+| attributename=""
+| attributetype=""
+| basefrequency=""
+| baseprofile=""
+| calcmode=""
+| clippathunits=""
+| diffuseconstant=""
+| edgemode=""
+| filterunits=""
+| glyphref=""
+| gradienttransform=""
+| gradientunits=""
+| kernelmatrix=""
+| kernelunitlength=""
+| keypoints=""
+| keysplines=""
+| keytimes=""
+| lengthadjust=""
+| limitingconeangle=""
+| markerheight=""
+| markerunits=""
+| markerwidth=""
+| maskcontentunits=""
+| maskunits=""
+| numoctaves=""
+| pathlength=""
+| patterncontentunits=""
+| patterntransform=""
+| patternunits=""
+| pointsatx=""
+| pointsaty=""
+| pointsatz=""
+| preservealpha=""
+| preserveaspectratio=""
+| primitiveunits=""
+| refx=""
+| refy=""
+| repeatcount=""
+| repeatdur=""
+| requiredextensions=""
+| requiredfeatures=""
+| specularconstant=""
+| specularexponent=""
+| spreadmethod=""
+| startoffset=""
+| stddeviation=""
+| stitchtiles=""
+| surfacescale=""
+| systemlanguage=""
+| tablevalues=""
+| targetx=""
+| targety=""
+| textlength=""
+| viewbox=""
+| viewtarget=""
+| xchannelselector=""
+| ychannelselector=""
+| zoomandpan=""
+
+#data
+<!DOCTYPE html><body><svg contentScriptType='' contentStyleType='' externalResourcesRequired='' filterRes=''></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <svg svg>
+| contentscripttype=""
+| contentstyletype=""
+| externalresourcesrequired=""
+| filterres=""
+
+#data
+<!DOCTYPE html><body><svg CONTENTSCRIPTTYPE='' CONTENTSTYLETYPE='' EXTERNALRESOURCESREQUIRED='' FILTERRES=''></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <svg svg>
+| contentscripttype=""
+| contentstyletype=""
+| externalresourcesrequired=""
+| filterres=""
+
+#data
+<!DOCTYPE html><body><svg contentscripttype='' contentstyletype='' externalresourcesrequired='' filterres=''></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <svg svg>
+| contentscripttype=""
+| contentstyletype=""
+| externalresourcesrequired=""
+| filterres=""
+
+#data
+<!DOCTYPE html><body><math contentScriptType='' contentStyleType='' externalResourcesRequired='' filterRes=''></math>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <math math>
+| contentscripttype=""
+| contentstyletype=""
+| externalresourcesrequired=""
+| filterres=""
+
+#data
+<!DOCTYPE html><body><svg><altGlyph /><altGlyphDef /><altGlyphItem /><animateColor /><animateMotion /><animateTransform /><clipPath /><feBlend /><feColorMatrix /><feComponentTransfer /><feComposite /><feConvolveMatrix /><feDiffuseLighting /><feDisplacementMap /><feDistantLight /><feFlood /><feFuncA /><feFuncB /><feFuncG /><feFuncR /><feGaussianBlur /><feImage /><feMerge /><feMergeNode /><feMorphology /><feOffset /><fePointLight /><feSpecularLighting /><feSpotLight /><feTile /><feTurbulence /><foreignObject /><glyphRef /><linearGradient /><radialGradient /><textPath /></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <svg svg>
+| <svg altGlyph>
+| <svg altGlyphDef>
+| <svg altGlyphItem>
+| <svg animateColor>
+| <svg animateMotion>
+| <svg animateTransform>
+| <svg clipPath>
+| <svg feBlend>
+| <svg feColorMatrix>
+| <svg feComponentTransfer>
+| <svg feComposite>
+| <svg feConvolveMatrix>
+| <svg feDiffuseLighting>
+| <svg feDisplacementMap>
+| <svg feDistantLight>
+| <svg feFlood>
+| <svg feFuncA>
+| <svg feFuncB>
+| <svg feFuncG>
+| <svg feFuncR>
+| <svg feGaussianBlur>
+| <svg feImage>
+| <svg feMerge>
+| <svg feMergeNode>
+| <svg feMorphology>
+| <svg feOffset>
+| <svg fePointLight>
+| <svg feSpecularLighting>
+| <svg feSpotLight>
+| <svg feTile>
+| <svg feTurbulence>
+| <svg foreignObject>
+| <svg glyphRef>
+| <svg linearGradient>
+| <svg radialGradient>
+| <svg textPath>
+
+#data
+<!DOCTYPE html><body><svg><altglyph /><altglyphdef /><altglyphitem /><animatecolor /><animatemotion /><animatetransform /><clippath /><feblend /><fecolormatrix /><fecomponenttransfer /><fecomposite /><feconvolvematrix /><fediffuselighting /><fedisplacementmap /><fedistantlight /><feflood /><fefunca /><fefuncb /><fefuncg /><fefuncr /><fegaussianblur /><feimage /><femerge /><femergenode /><femorphology /><feoffset /><fepointlight /><fespecularlighting /><fespotlight /><fetile /><feturbulence /><foreignobject /><glyphref /><lineargradient /><radialgradient /><textpath /></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <svg svg>
+| <svg altGlyph>
+| <svg altGlyphDef>
+| <svg altGlyphItem>
+| <svg animateColor>
+| <svg animateMotion>
+| <svg animateTransform>
+| <svg clipPath>
+| <svg feBlend>
+| <svg feColorMatrix>
+| <svg feComponentTransfer>
+| <svg feComposite>
+| <svg feConvolveMatrix>
+| <svg feDiffuseLighting>
+| <svg feDisplacementMap>
+| <svg feDistantLight>
+| <svg feFlood>
+| <svg feFuncA>
+| <svg feFuncB>
+| <svg feFuncG>
+| <svg feFuncR>
+| <svg feGaussianBlur>
+| <svg feImage>
+| <svg feMerge>
+| <svg feMergeNode>
+| <svg feMorphology>
+| <svg feOffset>
+| <svg fePointLight>
+| <svg feSpecularLighting>
+| <svg feSpotLight>
+| <svg feTile>
+| <svg feTurbulence>
+| <svg foreignObject>
+| <svg glyphRef>
+| <svg linearGradient>
+| <svg radialGradient>
+| <svg textPath>
+
+#data
+<!DOCTYPE html><BODY><SVG><ALTGLYPH /><ALTGLYPHDEF /><ALTGLYPHITEM /><ANIMATECOLOR /><ANIMATEMOTION /><ANIMATETRANSFORM /><CLIPPATH /><FEBLEND /><FECOLORMATRIX /><FECOMPONENTTRANSFER /><FECOMPOSITE /><FECONVOLVEMATRIX /><FEDIFFUSELIGHTING /><FEDISPLACEMENTMAP /><FEDISTANTLIGHT /><FEFLOOD /><FEFUNCA /><FEFUNCB /><FEFUNCG /><FEFUNCR /><FEGAUSSIANBLUR /><FEIMAGE /><FEMERGE /><FEMERGENODE /><FEMORPHOLOGY /><FEOFFSET /><FEPOINTLIGHT /><FESPECULARLIGHTING /><FESPOTLIGHT /><FETILE /><FETURBULENCE /><FOREIGNOBJECT /><GLYPHREF /><LINEARGRADIENT /><RADIALGRADIENT /><TEXTPATH /></SVG>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <svg svg>
+| <svg altGlyph>
+| <svg altGlyphDef>
+| <svg altGlyphItem>
+| <svg animateColor>
+| <svg animateMotion>
+| <svg animateTransform>
+| <svg clipPath>
+| <svg feBlend>
+| <svg feColorMatrix>
+| <svg feComponentTransfer>
+| <svg feComposite>
+| <svg feConvolveMatrix>
+| <svg feDiffuseLighting>
+| <svg feDisplacementMap>
+| <svg feDistantLight>
+| <svg feFlood>
+| <svg feFuncA>
+| <svg feFuncB>
+| <svg feFuncG>
+| <svg feFuncR>
+| <svg feGaussianBlur>
+| <svg feImage>
+| <svg feMerge>
+| <svg feMergeNode>
+| <svg feMorphology>
+| <svg feOffset>
+| <svg fePointLight>
+| <svg feSpecularLighting>
+| <svg feSpotLight>
+| <svg feTile>
+| <svg feTurbulence>
+| <svg foreignObject>
+| <svg glyphRef>
+| <svg linearGradient>
+| <svg radialGradient>
+| <svg textPath>
+
+#data
+<!DOCTYPE html><body><math><altGlyph /><altGlyphDef /><altGlyphItem /><animateColor /><animateMotion /><animateTransform /><clipPath /><feBlend /><feColorMatrix /><feComponentTransfer /><feComposite /><feConvolveMatrix /><feDiffuseLighting /><feDisplacementMap /><feDistantLight /><feFlood /><feFuncA /><feFuncB /><feFuncG /><feFuncR /><feGaussianBlur /><feImage /><feMerge /><feMergeNode /><feMorphology /><feOffset /><fePointLight /><feSpecularLighting /><feSpotLight /><feTile /><feTurbulence /><foreignObject /><glyphRef /><linearGradient /><radialGradient /><textPath /></math>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <math math>
+| <math altglyph>
+| <math altglyphdef>
+| <math altglyphitem>
+| <math animatecolor>
+| <math animatemotion>
+| <math animatetransform>
+| <math clippath>
+| <math feblend>
+| <math fecolormatrix>
+| <math fecomponenttransfer>
+| <math fecomposite>
+| <math feconvolvematrix>
+| <math fediffuselighting>
+| <math fedisplacementmap>
+| <math fedistantlight>
+| <math feflood>
+| <math fefunca>
+| <math fefuncb>
+| <math fefuncg>
+| <math fefuncr>
+| <math fegaussianblur>
+| <math feimage>
+| <math femerge>
+| <math femergenode>
+| <math femorphology>
+| <math feoffset>
+| <math fepointlight>
+| <math fespecularlighting>
+| <math fespotlight>
+| <math fetile>
+| <math feturbulence>
+| <math foreignobject>
+| <math glyphref>
+| <math lineargradient>
+| <math radialgradient>
+| <math textpath>
+
+#data
+<!DOCTYPE html><body><svg><solidColor /></svg>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <svg svg>
+| <svg solidcolor>
diff --git a/tests/data/tree-construction/tests12.dat b/tests/data/tree-construction/tests12.dat
new file mode 100644
index 00000000..63107d27
--- /dev/null
+++ b/tests/data/tree-construction/tests12.dat
@@ -0,0 +1,62 @@
+#data
+<!DOCTYPE html><body><p>foo<math><mtext><i>baz</i></mtext><annotation-xml><svg><desc><b>eggs</b></desc><g><foreignObject><P>spam<TABLE><tr><td><img></td></table></foreignObject></g><g>quux</g></svg></annotation-xml></math>bar
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| "foo"
+| <math math>
+| <math mtext>
+| <i>
+| "baz"
+| <math annotation-xml>
+| <svg svg>
+| <svg desc>
+| <b>
+| "eggs"
+| <svg g>
+| <svg foreignObject>
+| <p>
+| "spam"
+| <table>
+| <tbody>
+| <tr>
+| <td>
+| <img>
+| <svg g>
+| "quux"
+| "bar"
+
+#data
+<!DOCTYPE html><body>foo<math><mtext><i>baz</i></mtext><annotation-xml><svg><desc><b>eggs</b></desc><g><foreignObject><P>spam<TABLE><tr><td><img></td></table></foreignObject></g><g>quux</g></svg></annotation-xml></math>bar
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| "foo"
+| <math math>
+| <math mtext>
+| <i>
+| "baz"
+| <math annotation-xml>
+| <svg svg>
+| <svg desc>
+| <b>
+| "eggs"
+| <svg g>
+| <svg foreignObject>
+| <p>
+| "spam"
+| <table>
+| <tbody>
+| <tr>
+| <td>
+| <img>
+| <svg g>
+| "quux"
+| "bar"
diff --git a/tests/data/tree-construction/tests14.dat b/tests/data/tree-construction/tests14.dat
new file mode 100644
index 00000000..a08b7649
--- /dev/null
+++ b/tests/data/tree-construction/tests14.dat
@@ -0,0 +1,75 @@
+#data
+<!DOCTYPE html><html><body><xyz:abc></xyz:abc>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <xyz:abc>
+
+#data
+<!DOCTYPE html><html><body><xyz:abc></xyz:abc><span></span>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <xyz:abc>
+| <span>
+
+#data
+<!DOCTYPE html><html><html abc:def=gh><xyz:abc></xyz:abc>
+#errors
+(1,38): non-html-root
+#document
+| <!DOCTYPE html>
+| <html>
+| abc:def="gh"
+| <head>
+| <body>
+| <xyz:abc>
+
+#data
+<!DOCTYPE html><html xml:lang=bar><html xml:lang=foo>
+#errors
+(1,53): non-html-root
+#document
+| <!DOCTYPE html>
+| <html>
+| xml:lang="bar"
+| <head>
+| <body>
+
+#data
+<!DOCTYPE html><html 123=456>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| 123="456"
+| <head>
+| <body>
+
+#data
+<!DOCTYPE html><html 123=456><html 789=012>
+#errors
+(1,43): non-html-root
+#document
+| <!DOCTYPE html>
+| <html>
+| 123="456"
+| 789="012"
+| <head>
+| <body>
+
+#data
+<!DOCTYPE html><html><body 789=012>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| 789="012"
diff --git a/tests/data/tree-construction/tests15.dat b/tests/data/tree-construction/tests15.dat
new file mode 100644
index 00000000..93d06a87
--- /dev/null
+++ b/tests/data/tree-construction/tests15.dat
@@ -0,0 +1,216 @@
+#data
+<!DOCTYPE html><p><b><i><u></p> <p>X
+#errors
+(1,31): unexpected-end-tag
+(1,36): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <b>
+| <i>
+| <u>
+| <b>
+| <i>
+| <u>
+| " "
+| <p>
+| "X"
+
+#data
+<p><b><i><u></p>
+<p>X
+#errors
+(1,3): expected-doctype-but-got-start-tag
+(1,16): unexpected-end-tag
+(2,4): expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <p>
+| <b>
+| <i>
+| <u>
+| <b>
+| <i>
+| <u>
+| "
+"
+| <p>
+| "X"
+
+#data
+<!doctype html></html> <head>
+#errors
+(1,29): expected-eof-but-got-start-tag
+(1,29): unexpected-start-tag-ignored
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| " "
+
+#data
+<!doctype html></body><meta>
+#errors
+(1,28): unexpected-start-tag-after-body
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <meta>
+
+#data
+<html></html><!-- foo -->
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <body>
+| <!-- foo -->
+
+#data
+<!doctype html></body><title>X
+#errors
+(1,29): unexpected-start-tag-after-body
+#document
+|
+|
+|
+|
+|
+| "X"
+
+#data
+<!doctype html><table> X<meta></table>
+#errors
+(1,23): foster-parenting-character
+(1,24): foster-parenting-character
+(1,30): foster-parenting-start-character
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| " X"
+| <meta>
+| <table>
+
+#data
+<!doctype html><table> x</table>
+#errors
+(1,23): foster-parenting-character
+(1,24): foster-parenting-character
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| " x"
+| <table>
+
+#data
+<!doctype html><table> x </table>
+#errors
+(1,23): foster-parenting-character
+(1,24): foster-parenting-character
+(1,25): foster-parenting-character
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| " x "
+| <table>
+
+#data
+<!doctype html><table><tr> x</table>
+#errors
+(1,27): foster-parenting-character
+(1,28): foster-parenting-character
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| " x"
+| <table>
+| <tbody>
+| <tr>
+
+#data
+<!doctype html><table>X<style> <tr>x </style> </table>
+#errors
+(1,23): foster-parenting-character
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| "X"
+| <table>
+| <style>
+| " <tr>x "
+| " "
+
+#data
+<!doctype html><div><table><a>foo</a> <tr><td>bar</td> </tr></table></div>
+#errors
+(1,30): foster-parenting-start-tag
+(1,31): foster-parenting-character
+(1,32): foster-parenting-character
+(1,33): foster-parenting-character
+(1,37): foster-parenting-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <div>
+| <a>
+| "foo"
+| <table>
+| " "
+| <tbody>
+| <tr>
+| <td>
+| "bar"
+| " "
+
+#data
+<frame></frame></frame><frameset><frame><frameset><frame></frameset><noframes></frameset><noframes>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,7): unexpected-start-tag-ignored
+(1,15): unexpected-end-tag
+(1,23): unexpected-end-tag
+(1,33): unexpected-start-tag
+(1,99): expected-named-closing-tag-but-got-eof
+(1,99): eof-in-frameset
+#document
+| <html>
+| <head>
+| <frameset>
+| <frame>
+| <frameset>
+| <frame>
+| <noframes>
+| "</frameset><noframes>"
+
+#data
+<!DOCTYPE html><object></html>
+#errors
+(1,30): expected-body-in-scope
+(1,30): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <object>
diff --git a/tests/data/tree-construction/tests16.dat b/tests/data/tree-construction/tests16.dat
new file mode 100644
index 00000000..05f34c13
--- /dev/null
+++ b/tests/data/tree-construction/tests16.dat
@@ -0,0 +1,2602 @@
+#data
+<!doctype html><script>
+#errors
+(1,23): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| <body>
+
+#data
+<!doctype html><script>a
+#errors
+(1,24): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "a"
+| <body>
+
+#data
+<!doctype html><script><
+#errors
+(1,24): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<"
+| <body>
+
+#data
+<!doctype html><script></
+#errors
+(1,25): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "</"
+| <body>
+
+#data
+<!doctype html><script></S
+#errors
+(1,26): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "</S"
+| <body>
+
+#data
+<!doctype html><script></SC
+#errors
+(1,27): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "</SC"
+| <body>
+
+#data
+<!doctype html><script></SCR
+#errors
+(1,28): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "</SCR"
+| <body>
+
+#data
+<!doctype html><script></SCRI
+#errors
+(1,29): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "</SCRI"
+| <body>
+
+#data
+<!doctype html><script></SCRIP
+#errors
+(1,30): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "</SCRIP"
+| <body>
+
+#data
+<!doctype html><script></SCRIPT
+#errors
+(1,31): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "</SCRIPT"
+| <body>
+
+#data
+<!doctype html><script></SCRIPT
+#errors
+(1,32): expected-attribute-name-but-got-eof
+(1,32): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:33) eof-in-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| <body>
+
+#data
+<!doctype html><script></s
+#errors
+(1,26): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "</s"
+| <body>
+
+#data
+<!doctype html><script></sc
+#errors
+(1,27): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "</sc"
+| <body>
+
+#data
+<!doctype html><script></scr
+#errors
+(1,28): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "</scr"
+| <body>
+
+#data
+<!doctype html><script></scri
+#errors
+(1,29): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "</scri"
+| <body>
+
+#data
+<!doctype html><script></scrip
+#errors
+(1,30): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "</scrip"
+| <body>
+
+#data
+<!doctype html><script></script
+#errors
+(1,31): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "</script"
+| <body>
+
+#data
+<!doctype html><script></script
+#errors
+(1,32): expected-attribute-name-but-got-eof
+(1,32): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:33) eof-in-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| <body>
+
+#data
+<!doctype html><script><!
+#errors
+(1,25): expected-script-data-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!"
+| <body>
+
+#data
+<!doctype html><script><!a
+#errors
+(1,26): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!a"
+| <body>
+
+#data
+<!doctype html><script><!-
+#errors
+(1,26): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!-"
+| <body>
+
+#data
+<!doctype html><script><!-a
+#errors
+(1,27): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!-a"
+| <body>
+
+#data
+<!doctype html><script><!--
+#errors
+(1,27): expected-named-closing-tag-but-got-eof
+(1,27): unexpected-eof-in-text-mode
+#new-errors
+(1:28) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--"
+| <body>
+
+#data
+<!doctype html><script><!--a
+#errors
+(1,28): expected-named-closing-tag-but-got-eof
+(1,28): unexpected-eof-in-text-mode
+#new-errors
+(1:29) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--a"
+| <body>
+
+#data
+<!doctype html><script><!--<
+#errors
+(1,28): expected-named-closing-tag-but-got-eof
+(1,28): unexpected-eof-in-text-mode
+#new-errors
+(1:29) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<"
+| <body>
+
+#data
+<!doctype html><script><!--<a
+#errors
+(1,29): expected-named-closing-tag-but-got-eof
+(1,29): unexpected-eof-in-text-mode
+#new-errors
+(1:30) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<a"
+| <body>
+
+#data
+<!doctype html><script><!--</
+#errors
+(1,29): expected-named-closing-tag-but-got-eof
+(1,29): unexpected-eof-in-text-mode
+#new-errors
+(1:30) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--</"
+| <body>
+
+#data
+<!doctype html><script><!--</script
+#errors
+(1,35): expected-named-closing-tag-but-got-eof
+(1,35): unexpected-eof-in-text-mode
+#new-errors
+(1:36) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--</script"
+| <body>
+
+#data
+<!doctype html><script><!--</script
+#errors
+(1,36): expected-attribute-name-but-got-eof
+(1,36): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:37) eof-in-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--"
+| <body>
+
+#data
+<!doctype html><script><!--<s
+#errors
+(1,29): expected-named-closing-tag-but-got-eof
+(1,29): unexpected-eof-in-text-mode
+#new-errors
+(1:30) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<s"
+| <body>
+
+#data
+<!doctype html><script><!--<script
+#errors
+(1,34): expected-named-closing-tag-but-got-eof
+(1,34): unexpected-eof-in-text-mode
+#new-errors
+(1:35) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script"
+| <body>
+
+#data
+<!doctype html><script><!--<script
+#errors
+(1,35): eof-in-script-in-script
+(1,35): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:36) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script "
+| <body>
+
+#data
+<!doctype html><script><!--<script <
+#errors
+(1,36): eof-in-script-in-script
+(1,36): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:37) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script <"
+| <body>
+
+#data
+<!doctype html><script><!--<script <a
+#errors
+(1,37): eof-in-script-in-script
+(1,37): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:38) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script <a"
+| <body>
+
+#data
+<!doctype html><script><!--<script </
+#errors
+(1,37): eof-in-script-in-script
+(1,37): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:38) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script </"
+| <body>
+
+#data
+<!doctype html><script><!--<script </s
+#errors
+(1,38): eof-in-script-in-script
+(1,38): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:39) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script </s"
+| <body>
+
+#data
+<!doctype html><script><!--<script </script
+#errors
+(1,43): eof-in-script-in-script
+(1,43): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:44) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script </script"
+| <body>
+
+#data
+<!doctype html><script><!--<script </scripta
+#errors
+(1,44): eof-in-script-in-script
+(1,44): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:45) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script </scripta"
+| <body>
+
+#data
+<!doctype html><script><!--<script </script
+#errors
+(1,44): expected-named-closing-tag-but-got-eof
+(1,44): unexpected-eof-in-text-mode
+#new-errors
+(1:45) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script </script "
+| <body>
+
+#data
+<!doctype html><script><!--<script </script>
+#errors
+(1,44): expected-named-closing-tag-but-got-eof
+(1,44): unexpected-eof-in-text-mode
+#new-errors
+(1:45) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script </script>"
+| <body>
+
+#data
+<!doctype html><script><!--<script </script/
+#errors
+(1,44): expected-named-closing-tag-but-got-eof
+(1,44): unexpected-eof-in-text-mode
+#new-errors
+(1:45) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script </script/"
+| <body>
+
+#data
+<!doctype html><script><!--<script </script <
+#errors
+(1,45): expected-named-closing-tag-but-got-eof
+(1,45): unexpected-eof-in-text-mode
+#new-errors
+(1:46) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script </script <"
+| <body>
+
+#data
+<!doctype html><script><!--<script </script <a
+#errors
+(1,46): expected-named-closing-tag-but-got-eof
+(1,46): unexpected-eof-in-text-mode
+#new-errors
+(1:47) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script </script <a"
+| <body>
+
+#data
+<!doctype html><script><!--<script </script </
+#errors
+(1,46): expected-named-closing-tag-but-got-eof
+(1,46): unexpected-eof-in-text-mode
+#new-errors
+(1:47) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script </script </"
+| <body>
+
+#data
+<!doctype html><script><!--<script </script </script
+#errors
+(1,52): expected-named-closing-tag-but-got-eof
+(1,52): unexpected-eof-in-text-mode
+#new-errors
+(1:53) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script </script </script"
+| <body>
+
+#data
+<!doctype html><script><!--<script </script </script
+#errors
+(1,53): expected-attribute-name-but-got-eof
+(1,53): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:54) eof-in-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script </script "
+| <body>
+
+#data
+<!doctype html><script><!--<script </script </script/
+#errors
+(1,53): unexpected-EOF-after-solidus-in-tag
+(1,53): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:54) eof-in-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script </script "
+| <body>
+
+#data
+<!doctype html><script><!--<script </script </script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script </script "
+| <body>
+
+#data
+<!doctype html><script><!--<script -
+#errors
+(1,36): eof-in-script-in-script
+(1,36): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:37) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script -"
+| <body>
+
+#data
+<!doctype html><script><!--<script -a
+#errors
+(1,37): eof-in-script-in-script
+(1,37): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:38) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script -a"
+| <body>
+
+#data
+<!doctype html><script><!--<script -<
+#errors
+(1,37): eof-in-script-in-script
+(1,37): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:38) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script -<"
+| <body>
+
+#data
+<!doctype html><script><!--<script --
+#errors
+(1,37): eof-in-script-in-script
+(1,37): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:38) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script --"
+| <body>
+
+#data
+<!doctype html><script><!--<script --a
+#errors
+(1,38): eof-in-script-in-script
+(1,38): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:39) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script --a"
+| <body>
+
+#data
+<!doctype html><script><!--<script --<
+#errors
+(1,38): eof-in-script-in-script
+(1,38): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:39) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script --<"
+| <body>
+
+#data
+<!doctype html><script><!--<script -->
+#errors
+(1,38): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script -->"
+| <body>
+
+#data
+<!doctype html><script><!--<script --><
+#errors
+(1,39): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script --><"
+| <body>
+
+#data
+<!doctype html><script><!--<script --></
+#errors
+(1,40): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script --></"
+| <body>
+
+#data
+<!doctype html><script><!--<script --></script
+#errors
+(1,46): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script --></script"
+| <body>
+
+#data
+<!doctype html><script><!--<script --></script
+#errors
+(1,47): expected-attribute-name-but-got-eof
+(1,47): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:48) eof-in-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script -->"
+| <body>
+
+#data
+<!doctype html><script><!--<script --></script/
+#errors
+(1,47): unexpected-EOF-after-solidus-in-tag
+(1,47): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:48) eof-in-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script -->"
+| <body>
+
+#data
+<!doctype html><script><!--<script --></script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script -->"
+| <body>
+
+#data
+<!doctype html><script><!--<script><\/script>--></script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script><\/script>-->"
+| <body>
+
+#data
+<!doctype html><script><!--<script></scr'+'ipt>--></script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script></scr'+'ipt>-->"
+| <body>
+
+#data
+<!doctype html><script><!--<script></script><script></script></script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script></script><script></script>"
+| <body>
+
+#data
+<!doctype html><script><!--<script></script><script></script>--><!--</script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script></script><script></script>--><!--"
+| <body>
+
+#data
+<!doctype html><script><!--<script></script><script></script>-- ></script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script></script><script></script>-- >"
+| <body>
+
+#data
+<!doctype html><script><!--<script></script><script></script>- -></script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script></script><script></script>- ->"
+| <body>
+
+#data
+<!doctype html><script><!--<script></script><script></script>- - ></script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script></script><script></script>- - >"
+| <body>
+
+#data
+<!doctype html><script><!--<script></script><script></script>-></script>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script></script><script></script>->"
+| <body>
+
+#data
+<!doctype html><script><!--<script>--!></script>X
+#errors
+(1,49): expected-named-closing-tag-but-got-eof
+(1,49): unexpected-EOF-in-text-mode
+#new-errors
+(1:50) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script>--!></script>X"
+| <body>
+
+#data
+<!doctype html><script><!--<scr'+'ipt></script>--></script>
+#errors
+(1,59): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<scr'+'ipt>"
+| <body>
+| "-->"
+
+#data
+<!doctype html><script><!--<script></scr'+'ipt></script>X
+#errors
+(1,57): expected-named-closing-tag-but-got-eof
+(1,57): unexpected-eof-in-text-mode
+#new-errors
+(1:58) eof-in-script-html-comment-like-text
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| "<!--<script></scr'+'ipt></script>X"
+| <body>
+
+#data
+<!doctype html><style><!--<style></style>--></style>
+#errors
+(1,52): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <style>
+| "<!--<style>"
+| <body>
+| "-->"
+
+#data
+<!doctype html><style><!--</style>X
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <style>
+| "<!--"
+| <body>
+| "X"
+
+#data
+<!doctype html><style><!--...</style>...--></style>
+#errors
+(1,51): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <style>
+| "<!--..."
+| <body>
+| "...-->"
+
+#data
+<!doctype html><style><!--<br><html xmlns:v="urn:schemas-microsoft-com:vml"><!--[if !mso]><style></style>X
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <style>
+| "<!--<br><html xmlns:v="urn:schemas-microsoft-com:vml"><!--[if !mso]><style>"
+| <body>
+| "X"
+
+#data
+<!doctype html><style><!--...<style><!--...--!></style>--></style>
+#errors
+(1,66): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <style>
+| "<!--...<style><!--...--!>"
+| <body>
+| "-->"
+
+#data
+<!doctype html><style><!--...</style><!-- --><style>@import ...</style>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <style>
+| "<!--..."
+| <!-- -->
+| <style>
+| "@import ..."
+| <body>
+
+#data
+<!doctype html><style>...<style><!--...</style><!-- --></style>
+#errors
+(1,63): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <style>
+| "...<style><!--..."
+| <!-- -->
+| <body>
+
+#data
+<!doctype html><style>...<!--[if IE]><style>...</style>X
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <style>
+| "...<!--[if IE]><style>..."
+| <body>
+| "X"
+
+#data
+<!doctype html><title><!--<title> -->
+#errors
+(1,52): unexpected-end-tag
+#document
+|
+|
+|
+|
+| "<!--<title>"
+| <body>
+| "-->"
+
+#data
+<!doctype html><title></title>
+#errors
+#document
+|
+|
+|
+|
+| " "
+|
+
+#data
+foo/title><link></head><body>X
+#errors
+(1,52): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <title>
+| "foo/title><link></head><body>X"
+| <body>
+
+#data
+<!doctype html><noscript><!--<noscript></noscript>--></noscript>
+#errors
+(1,64): unexpected-end-tag
+#script-on
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <noscript>
+| "<!--<noscript>"
+| <body>
+| "-->"
+
+#data
+<!doctype html><noscript><!--<noscript></noscript>--></noscript>
+#errors
+#script-off
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <noscript>
+| <!-- <noscript></noscript> -->
+| <body>
+
+#data
+<!doctype html><noscript><!--</noscript>X<noscript>--></noscript>
+#errors
+#script-on
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <noscript>
+| "<!--"
+| <body>
+| "X"
+| <noscript>
+| "-->"
+
+#data
+<!doctype html><noscript><!--</noscript>X<noscript>--></noscript>
+#errors
+#script-off
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <noscript>
+| <!-- </noscript>X<noscript> -->
+| <body>
+
+#data
+<!doctype html><noscript><iframe></noscript>X
+#errors
+#script-on
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <noscript>
+| "<iframe>"
+| <body>
+| "X"
+
+#data
+<!doctype html><noscript><iframe></noscript>X
+#errors
+ * (1,34) unexpected token in head noscript
+ * (1,46) unexpected EOF
+#script-off
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <noscript>
+| <body>
+| <iframe>
+| "</noscript>X"
+
+#data
+<!doctype html><noframes><!--<noframes></noframes>--></noframes>
+#errors
+(1,64): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <noframes>
+| "<!--<noframes>"
+| <body>
+| "-->"
+
+#data
+<!doctype html><noframes><body><script><!--...</script></body></noframes></html>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <noframes>
+| "<body><script><!--...</script></body>"
+| <body>
+
+#data
+<!doctype html><textarea><!--<textarea></textarea>--></textarea>
+#errors
+(1,64): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <textarea>
+| "<!--<textarea>"
+| "-->"
+
+#data
+<!doctype html><textarea></textarea></textarea>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <textarea>
+| "</textarea>"
+
+#data
+<!doctype html><textarea><</textarea>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <textarea>
+| "<"
+
+#data
+<!doctype html><textarea>a<b</textarea>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <textarea>
+| "a<b"
+
+#data
+<!doctype html><iframe><!--<iframe></iframe>--></iframe>
+#errors
+(1,56): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <iframe>
+| "<!--<iframe>"
+| "-->"
+
+#data
+<!doctype html><iframe>...<!--X->...<!--/X->...</iframe>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <iframe>
+| "...<!--X->...<!--/X->..."
+
+#data
+<!doctype html><xmp><!--<xmp></xmp>--></xmp>
+#errors
+(1,44): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <xmp>
+| "<!--<xmp>"
+| "-->"
+
+#data
+<!doctype html><noembed><!--<noembed></noembed>--></noembed>
+#errors
+(1,60): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <noembed>
+| "<!--<noembed>"
+| "-->"
+
+#data
+<script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,8): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| <body>
+
+#data
+<script>a
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,9): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "a"
+| <body>
+
+#data
+<script><
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,9): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "<"
+| <body>
+
+#data
+<script></
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,10): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "</"
+| <body>
+
+#data
+<script></S
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,11): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "</S"
+| <body>
+
+#data
+<script></SC
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,12): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "</SC"
+| <body>
+
+#data
+<script></SCR
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,13): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "</SCR"
+| <body>
+
+#data
+<script></SCRI
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,14): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "</SCRI"
+| <body>
+
+#data
+<script></SCRIP
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,15): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "</SCRIP"
+| <body>
+
+#data
+<script></SCRIPT
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,16): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "</SCRIPT"
+| <body>
+
+#data
+<script></SCRIPT
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,17): expected-attribute-name-but-got-eof
+(1,17): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:18) eof-in-tag
+#document
+| <html>
+| <head>
+| <script>
+| <body>
+
+#data
+<script></s
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,11): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "</s"
+| <body>
+
+#data
+<script></sc
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,12): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "</sc"
+| <body>
+
+#data
+<script></scr
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,13): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "</scr"
+| <body>
+
+#data
+<script></scri
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,14): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "</scri"
+| <body>
+
+#data
+<script></scrip
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,15): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "</scrip"
+| <body>
+
+#data
+<script></script
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,16): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "</script"
+| <body>
+
+#data
+<script></script
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,17): expected-attribute-name-but-got-eof
+(1,17): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:18) eof-in-tag
+#document
+| <html>
+| <head>
+| <script>
+| <body>
+
+#data
+<script><!
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,10): expected-script-data-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "<!"
+| <body>
+
+#data
+<script><!a
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,11): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "<!a"
+| <body>
+
+#data
+<script><!-
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,11): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "<!-"
+| <body>
+
+#data
+<script><!-a
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,12): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "<!-a"
+| <body>
+
+#data
+<script><!--
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,12): expected-named-closing-tag-but-got-eof
+(1,12): unexpected-eof-in-text-mode
+#new-errors
+(1:13) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--"
+| <body>
+
+#data
+<script><!--a
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,13): expected-named-closing-tag-but-got-eof
+(1,13): unexpected-eof-in-text-mode
+#new-errors
+(1:14) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--a"
+| <body>
+
+#data
+<script><!--<
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,13): expected-named-closing-tag-but-got-eof
+(1,13): unexpected-eof-in-text-mode
+#new-errors
+(1:14) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<"
+| <body>
+
+#data
+<script><!--<a
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,14): expected-named-closing-tag-but-got-eof
+(1,14): unexpected-eof-in-text-mode
+#new-errors
+(1:15) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<a"
+| <body>
+
+#data
+<script><!--</
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,14): expected-named-closing-tag-but-got-eof
+(1,14): unexpected-eof-in-text-mode
+#new-errors
+(1:15) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--</"
+| <body>
+
+#data
+<script><!--</script
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,20): expected-named-closing-tag-but-got-eof
+(1,20): unexpected-eof-in-text-mode
+#new-errors
+(1:21) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--</script"
+| <body>
+
+#data
+<script><!--</script
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,21): expected-attribute-name-but-got-eof
+(1,21): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:22) eof-in-tag
+#document
+| <html>
+| <head>
+| <script>
+| "<!--"
+| <body>
+
+#data
+<script><!--<s
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,14): expected-named-closing-tag-but-got-eof
+(1,14): unexpected-eof-in-text-mode
+#new-errors
+(1:15) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<s"
+| <body>
+
+#data
+<script><!--<script
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,19): expected-named-closing-tag-but-got-eof
+(1,19): unexpected-eof-in-text-mode
+#new-errors
+(1:20) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script"
+| <body>
+
+#data
+<script><!--<script
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,20): eof-in-script-in-script
+(1,20): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:21) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script "
+| <body>
+
+#data
+<script><!--<script <
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,21): eof-in-script-in-script
+(1,21): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:22) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script <"
+| <body>
+
+#data
+<script><!--<script <a
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,22): eof-in-script-in-script
+(1,22): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:23) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script <a"
+| <body>
+
+#data
+<script><!--<script </
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,22): eof-in-script-in-script
+(1,22): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:23) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script </"
+| <body>
+
+#data
+<script><!--<script </s
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,23): eof-in-script-in-script
+(1,23): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:24) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script </s"
+| <body>
+
+#data
+<script><!--<script </script
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,28): eof-in-script-in-script
+(1,28): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:29) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script </script"
+| <body>
+
+#data
+<script><!--<script </scripta
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,29): eof-in-script-in-script
+(1,29): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:30) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script </scripta"
+| <body>
+
+#data
+<script><!--<script </script
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,29): expected-named-closing-tag-but-got-eof
+(1,29): unexpected-eof-in-text-mode
+#new-errors
+(1:30) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script </script "
+| <body>
+
+#data
+<script><!--<script </script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,29): expected-named-closing-tag-but-got-eof
+(1,29): unexpected-eof-in-text-mode
+#new-errors
+(1:30) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script </script>"
+| <body>
+
+#data
+<script><!--<script </script/
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,29): expected-named-closing-tag-but-got-eof
+(1,29): unexpected-eof-in-text-mode
+#new-errors
+(1:30) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script </script/"
+| <body>
+
+#data
+<script><!--<script </script <
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,30): expected-named-closing-tag-but-got-eof
+(1,30): unexpected-eof-in-text-mode
+#new-errors
+(1:31) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script </script <"
+| <body>
+
+#data
+<script><!--<script </script <a
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,31): expected-named-closing-tag-but-got-eof
+(1,31): unexpected-eof-in-text-mode
+#new-errors
+(1:32) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script </script <a"
+| <body>
+
+#data
+<script><!--<script </script </
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,31): expected-named-closing-tag-but-got-eof
+(1,31): unexpected-eof-in-text-mode
+#new-errors
+(1:32) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script </script </"
+| <body>
+
+#data
+<script><!--<script </script </script
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,37): expected-named-closing-tag-but-got-eof
+(1,37): unexpected-eof-in-text-mode
+#new-errors
+(1:38) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script </script </script"
+| <body>
+
+#data
+<script><!--<script </script </script
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,38): expected-attribute-name-but-got-eof
+(1,38): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:39) eof-in-tag
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script </script "
+| <body>
+
+#data
+<script><!--<script </script </script/
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,38): unexpected-EOF-after-solidus-in-tag
+(1,38): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:39) eof-in-tag
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script </script "
+| <body>
+
+#data
+<script><!--<script </script </script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script </script "
+| <body>
+
+#data
+<script><!--<script -
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,21): eof-in-script-in-script
+(1,21): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:22) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script -"
+| <body>
+
+#data
+<script><!--<script -a
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,22): eof-in-script-in-script
+(1,22): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:23) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script -a"
+| <body>
+
+#data
+<script><!--<script --
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,22): eof-in-script-in-script
+(1,22): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:23) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script --"
+| <body>
+
+#data
+<script><!--<script --a
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,23): eof-in-script-in-script
+(1,23): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:24) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script --a"
+| <body>
+
+#data
+<script><!--<script -->
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,23): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script -->"
+| <body>
+
+#data
+<script><!--<script --><
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,24): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script --><"
+| <body>
+
+#data
+<script><!--<script --></
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,25): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script --></"
+| <body>
+
+#data
+<script><!--<script --></script
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,31): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script --></script"
+| <body>
+
+#data
+<script><!--<script --></script
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,32): expected-attribute-name-but-got-eof
+(1,32): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:33) eof-in-tag
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script -->"
+| <body>
+
+#data
+<script><!--<script --></script/
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,32): unexpected-EOF-after-solidus-in-tag
+(1,32): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:33) eof-in-tag
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script -->"
+| <body>
+
+#data
+<script><!--<script --></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script -->"
+| <body>
+
+#data
+<script><!--<script><\/script>--></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script><\/script>-->"
+| <body>
+
+#data
+<script><!--<script></scr'+'ipt>--></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script></scr'+'ipt>-->"
+| <body>
+
+#data
+<script><!--<script></script><script></script></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script></script><script></script>"
+| <body>
+
+#data
+<script><!--<script></script><script></script>--><!--</script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script></script><script></script>--><!--"
+| <body>
+
+#data
+<script><!--<script></script><script></script>-- ></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script></script><script></script>-- >"
+| <body>
+
+#data
+<script><!--<script></script><script></script>- -></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script></script><script></script>- ->"
+| <body>
+
+#data
+<script><!--<script></script><script></script>- - ></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script></script><script></script>- - >"
+| <body>
+
+#data
+<script><!--<script></script><script></script>-></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script></script><script></script>->"
+| <body>
+
+#data
+<script><!--<script>--!></script>X
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,34): expected-named-closing-tag-but-got-eof
+(1,34): unexpected-eof-in-text-mode
+#new-errors
+(1:35) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script>--!></script>X"
+| <body>
+
+#data
+<script><!--<scr'+'ipt></script>--></script>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,44): unexpected-end-tag
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<scr'+'ipt>"
+| <body>
+| "-->"
+
+#data
+<script><!--<script></scr'+'ipt></script>X
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,42): expected-named-closing-tag-but-got-eof
+(1,42): unexpected-eof-in-text-mode
+#new-errors
+(1:43) eof-in-script-html-comment-like-text
+#document
+| <html>
+| <head>
+| <script>
+| "<!--<script></scr'+'ipt></script>X"
+| <body>
+
+#data
+<style><!--<style></style>--></style>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,37): unexpected-end-tag
+#document
+| <html>
+| <head>
+| <style>
+| "<!--<style>"
+| <body>
+| "-->"
+
+#data
+<style><!--</style>X
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <style>
+| "<!--"
+| <body>
+| "X"
+
+#data
+<style><!--...</style>...--></style>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,36): unexpected-end-tag
+#document
+| <html>
+| <head>
+| <style>
+| "<!--..."
+| <body>
+| "...-->"
+
+#data
+<style><!--<br><html xmlns:v="urn:schemas-microsoft-com:vml"><!--[if !mso]><style></style>X
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <style>
+| "<!--<br><html xmlns:v="urn:schemas-microsoft-com:vml"><!--[if !mso]><style>"
+| <body>
+| "X"
+
+#data
+<style><!--...<style><!--...--!></style>--></style>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,51): unexpected-end-tag
+#document
+| <html>
+| <head>
+| <style>
+| "<!--...<style><!--...--!>"
+| <body>
+| "-->"
+
+#data
+<style><!--...</style><!-- --><style>@import ...</style>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <style>
+| "<!--..."
+| <!-- -->
+| <style>
+| "@import ..."
+| <body>
+
+#data
+<style>...<style><!--...</style><!-- --></style>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,48): unexpected-end-tag
+#document
+| <html>
+| <head>
+| <style>
+| "...<style><!--..."
+| <!-- -->
+| <body>
+
+#data
+<style>...<!--[if IE]><style>...</style>X
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <style>
+| "...<!--[if IE]><style>..."
+| <body>
+| "X"
+
+#data
+<title><!--<title> -->
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,37): unexpected-end-tag
+#document
+|
+|
+|
+| "<!--<title>"
+| <body>
+| "-->"
+
+#data
+<title></title>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+|
+|
+|
+| " "
+|
+
+#data
+foo/title><link></head><body>X
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,37): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <title>
+| "foo/title><link></head><body>X"
+| <body>
+
+#data
+<noscript><!--<noscript></noscript>--></noscript>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(1,49): unexpected-end-tag
+#script-on
+#document
+| <html>
+| <head>
+| <noscript>
+| "<!--<noscript>"
+| <body>
+| "-->"
+
+#data
+<noscript><!--<noscript></noscript>--></noscript>
+#errors
+ * (1,11) missing DOCTYPE
+#script-off
+#document
+| <html>
+| <head>
+| <noscript>
+| <!-- <noscript></noscript> -->
+| <body>
+
+#data
+<noscript><!--</noscript>X<noscript>--></noscript>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+#script-on
+#document
+| <html>
+| <head>
+| <noscript>
+| "<!--"
+| <body>
+| "X"
+| <noscript>
+| "-->"
+
+#data
+<noscript><!--</noscript>X<noscript>--></noscript>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+#script-off
+#document
+| <html>
+| <head>
+| <noscript>
+| <!-- </noscript>X<noscript> -->
+| <body>
+
+#data
+<noscript><iframe></noscript>X
+#errors
+(1,10): expected-doctype-but-got-start-tag
+#script-on
+#document
+| <html>
+| <head>
+| <noscript>
+| "<iframe>"
+| <body>
+| "X"
+
+#data
+<noscript><iframe></noscript>X
+#errors
+ * (1,11) missing DOCTYPE
+ * (1,19) unexpected token in head noscript
+ * (1,31) unexpected EOF
+#script-off
+#document
+| <html>
+| <head>
+| <noscript>
+| <body>
+| <iframe>
+| "</noscript>X"
+
+#data
+<noframes><!--<noframes></noframes>--></noframes>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(1,49): unexpected-end-tag
+#document
+| <html>
+| <head>
+| <noframes>
+| "<!--<noframes>"
+| <body>
+| "-->"
+
+#data
+<noframes><body><script><!--...</script></body></noframes></html>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <noframes>
+| "<body><script><!--...</script></body>"
+| <body>
+
+#data
+<textarea><!--<textarea></textarea>--></textarea>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(1,49): unexpected-end-tag
+#document
+| <html>
+| <head>
+| <body>
+| <textarea>
+| "<!--<textarea>"
+| "-->"
+
+#data
+<textarea></textarea></textarea>
+#errors
+(1,10): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <body>
+| <textarea>
+| "</textarea>"
+
+#data
+<iframe><!--<iframe></iframe>--></iframe>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,41): unexpected-end-tag
+#document
+| <html>
+| <head>
+| <body>
+| <iframe>
+| "<!--<iframe>"
+| "-->"
+
+#data
+<iframe>...<!--X->...<!--/X->...</iframe>
+#errors
+(1,8): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <body>
+| <iframe>
+| "...<!--X->...<!--/X->..."
+
+#data
+<xmp><!--<xmp></xmp>--></xmp>
+#errors
+(1,5): expected-doctype-but-got-start-tag
+(1,29): unexpected-end-tag
+#document
+| <html>
+| <head>
+| <body>
+| <xmp>
+| "<!--<xmp>"
+| "-->"
+
+#data
+<noembed><!--<noembed></noembed>--></noembed>
+#errors
+(1,9): expected-doctype-but-got-start-tag
+(1,45): unexpected-end-tag
+#document
+| <html>
+| <head>
+| <body>
+| <noembed>
+| "<!--<noembed>"
+| "-->"
+
+#data
+<!doctype html><table>
+
+#errors
+(2,0): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <table>
+| "
+"
+
+#data
+<!doctype html><table><td><span><font></span><span>
+#errors
+(1,26): unexpected-cell-in-table-body
+(1,45): unexpected-end-tag
+(1,51): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <table>
+| <tbody>
+| <tr>
+| <td>
+| <span>
+| <font>
+| <font>
+| <span>
+
+#data
+<!doctype html><form><table></form><form></table></form>
+#errors
+(1,35): unexpected-end-tag-implies-table-voodoo
+(1,35): unexpected-end-tag
+(1,41): unexpected-form-in-table
+(1,56): unexpected-end-tag
+(1,56): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <form>
+| <table>
+| <form>
diff --git a/tests/data/tree-construction/tests17.dat b/tests/data/tree-construction/tests17.dat
new file mode 100644
index 00000000..1c472d1d
--- /dev/null
+++ b/tests/data/tree-construction/tests17.dat
@@ -0,0 +1,177 @@
+#data
+<!doctype html><table><tbody><select><tr>
+#errors
+(1,30): unexpected-start-tag
+(1,42): premature-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+| <table>
+| <tbody>
+| <tr>
+
+#data
+<!doctype html><table><tr><select><td>
+#errors
+(1,27): unexpected-start-tag
+(1,39): premature-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+| <table>
+| <tbody>
+| <tr>
+| <td>
+
+#data
+<!doctype html><table><tr><td><select><td>
+#errors
+(1,42): unexpected-table-element-start-tag-in-select-in-table
+(1,42): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <table>
+| <tbody>
+| <tr>
+| <td>
+| <select>
+| <td>
+
+#data
+<!doctype html><table><tr><th><select><td>
+#errors
+(1,42): unexpected-table-element-start-tag-in-select-in-table
+(1,42): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <table>
+| <tbody>
+| <tr>
+| <th>
+| <select>
+| <td>
+
+#data
+<!doctype html><table><caption><select><tr>
+#errors
+(1,43): unexpected-table-element-start-tag-in-select-in-table
+(1,43): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <table>
+| <caption>
+| <select>
+| <tbody>
+| <tr>
+
+#data
+<!doctype html><select><tr>
+#errors
+(1,27): unexpected-start-tag-in-select
+(1,27): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+
+#data
+<!doctype html><select><td>
+#errors
+(1,27): unexpected-start-tag-in-select
+(1,27): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+
+#data
+<!doctype html><select><th>
+#errors
+(1,27): unexpected-start-tag-in-select
+(1,27): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+
+#data
+<!doctype html><select><tbody>
+#errors
+(1,30): unexpected-start-tag-in-select
+(1,30): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+
+#data
+<!doctype html><select><thead>
+#errors
+(1,30): unexpected-start-tag-in-select
+(1,30): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+
+#data
+<!doctype html><select><tfoot>
+#errors
+(1,30): unexpected-start-tag-in-select
+(1,30): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+
+#data
+<!doctype html><select><caption>
+#errors
+(1,32): unexpected-start-tag-in-select
+(1,32): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+
+#data
+<!doctype html><table><tr></table>a
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <table>
+| <tbody>
+| <tr>
+| "a"
diff --git a/tests/data/tree-construction/tests18.dat b/tests/data/tree-construction/tests18.dat
new file mode 100644
index 00000000..a3bb69a1
--- /dev/null
+++ b/tests/data/tree-construction/tests18.dat
@@ -0,0 +1,572 @@
+#data
+<plaintext></plaintext>
+#errors
+11: Start tag seen without seeing a doctype first. Expected “<!DOCTYPE html>”.
+23: End of file seen and there were open elements.
+#document
+| <html>
+| <head>
+| <body>
+| <plaintext>
+| "</plaintext>"
+
+#data
+<!doctype html><plaintext></plaintext>
+#errors
+(1,38): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <plaintext>
+| "</plaintext>"
+
+#data
+<!doctype html><html><plaintext></plaintext>
+#errors
+44: End of file seen and there were open elements.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <plaintext>
+| "</plaintext>"
+
+#data
+<!doctype html><head><plaintext></plaintext>
+#errors
+44: End of file seen and there were open elements.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <plaintext>
+| "</plaintext>"
+
+#data
+<!doctype html><html><noscript><plaintext></plaintext>
+#errors
+42: Bad start tag in “plaintext” in “head”.
+54: End of file seen and there were open elements.
+#script-off
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <noscript>
+| <body>
+| <plaintext>
+| "</plaintext>"
+
+#data
+<!doctype html></head><plaintext></plaintext>
+#errors
+45: End of file seen and there were open elements.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <plaintext>
+| "</plaintext>"
+
+#data
+<!doctype html><body><plaintext></plaintext>
+#errors
+44: End of file seen and there were open elements.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <plaintext>
+| "</plaintext>"
+
+#data
+<!doctype html><table><plaintext></plaintext>
+#errors
+(1,33): foster-parenting-start-tag
+(1,46): foster-parenting-character
+(1,46): foster-parenting-character
+(1,46): foster-parenting-character
+(1,46): foster-parenting-character
+(1,46): foster-parenting-character
+(1,46): foster-parenting-character
+(1,46): foster-parenting-character
+(1,46): foster-parenting-character
+(1,46): foster-parenting-character
+(1,46): foster-parenting-character
+(1,46): foster-parenting-character
+(1,46): foster-parenting-character
+(1,46): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <plaintext>
+| "</plaintext>"
+| <table>
+
+#data
+<!doctype html><table><tbody><plaintext></plaintext>
+#errors
+(1,40): foster-parenting-start-tag
+(1,53): foster-parenting-character
+(1,53): foster-parenting-character
+(1,53): foster-parenting-character
+(1,53): foster-parenting-character
+(1,53): foster-parenting-character
+(1,53): foster-parenting-character
+(1,53): foster-parenting-character
+(1,53): foster-parenting-character
+(1,53): foster-parenting-character
+(1,53): foster-parenting-character
+(1,53): foster-parenting-character
+(1,53): foster-parenting-character
+(1,53): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <plaintext>
+| "</plaintext>"
+| <table>
+| <tbody>
+
+#data
+<!doctype html><table><tbody><tr><plaintext></plaintext>
+#errors
+(1,44): foster-parenting-start-tag
+(1,57): foster-parenting-character
+(1,57): foster-parenting-character
+(1,57): foster-parenting-character
+(1,57): foster-parenting-character
+(1,57): foster-parenting-character
+(1,57): foster-parenting-character
+(1,57): foster-parenting-character
+(1,57): foster-parenting-character
+(1,57): foster-parenting-character
+(1,57): foster-parenting-character
+(1,57): foster-parenting-character
+(1,57): foster-parenting-character
+(1,57): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <plaintext>
+| "</plaintext>"
+| <table>
+| <tbody>
+| <tr>
+
+#data
+<!doctype html><table><td><plaintext></plaintext>
+#errors
+(1,26): unexpected-cell-in-table-body
+(1,49): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <table>
+| <tbody>
+| <tr>
+| <td>
+| <plaintext>
+| "</plaintext>"
+
+#data
+<!doctype html><table><caption><plaintext></plaintext>
+#errors
+(1,54): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <table>
+| <caption>
+| <plaintext>
+| "</plaintext>"
+
+#data
+<!doctype html><table><colgroup><plaintext></plaintext>
+#errors
+(1,43): foster-parenting-start-tag
+(1,56): foster-parenting-character
+(1,56): foster-parenting-character
+(1,56): foster-parenting-character
+(1,56): foster-parenting-character
+(1,56): foster-parenting-character
+(1,56): foster-parenting-character
+(1,56): foster-parenting-character
+(1,56): foster-parenting-character
+(1,56): foster-parenting-character
+(1,56): foster-parenting-character
+(1,56): foster-parenting-character
+(1,56): foster-parenting-character
+55: End of file seen and there were open elements.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <plaintext>
+| "</plaintext>"
+| <table>
+| <colgroup>
+
+#data
+<!doctype html><select><plaintext></plaintext>X
+#errors
+1:48: ERROR: Premature end of file. Currently open tags: html, body, select, plaintext.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+| <plaintext>
+| "</plaintext>X"
+
+#data
+<!doctype html><table><select><plaintext>a<caption>b
+#errors
+1:23: ERROR: Start tag 'select' isn't allowed here. Currently open tags: html, body, table.
+1:31: ERROR: Start tag 'plaintext' isn't allowed here. Currently open tags: html, body, table, select.
+1:42: ERROR: Character tokens aren't legal here
+1:43: ERROR: Character tokens aren't legal here
+1:44: ERROR: Character tokens aren't legal here
+1:45: ERROR: Character tokens aren't legal here
+1:46: ERROR: Character tokens aren't legal here
+1:47: ERROR: Character tokens aren't legal here
+1:48: ERROR: Character tokens aren't legal here
+1:49: ERROR: Character tokens aren't legal here
+1:50: ERROR: Character tokens aren't legal here
+1:51: ERROR: Character tokens aren't legal here
+1:52: ERROR: Character tokens aren't legal here
+1:53: ERROR: Premature end of file. Currently open tags: html, body, table, select, plaintext.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+| <plaintext>
+| "a<caption>b"
+| <table>
+
+#data
+<!doctype html><template><plaintext>a</template>b
+#errors
+49: End of file seen and there were open elements.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <template>
+| content
+| <plaintext>
+| "a</template>b"
+| <body>
+
+#data
+<!doctype html><body></body><plaintext></plaintext>
+#errors
+39: Stray start tag “plaintext”.
+51: End of file seen and there were open elements.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <plaintext>
+| "</plaintext>"
+
+#data
+<!doctype html><frameset><plaintext></plaintext>
+#errors
+36: Stray start tag “plaintext”.
+48: Stray end tag “plaintext”.
+48: End of file seen and there were open elements.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+
+#data
+<!doctype html><frameset></frameset><plaintext></plaintext>
+#errors
+47: Stray start tag “plaintext”.
+59: Stray end tag “plaintext”.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+
+#data
+<!doctype html><body></body></html><plaintext></plaintext>
+#errors
+46: Stray start tag “plaintext”.
+58: End of file seen and there were open elements.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <plaintext>
+| "</plaintext>"
+
+#data
+<!doctype html><frameset></frameset></html><plaintext></plaintext>
+#errors
+54: Stray start tag “plaintext”.
+66: Stray end tag “plaintext”.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+
+#data
+<!doctype html><svg><plaintext>a</plaintext>b
+#errors
+45: End of file seen and there were open elements.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <svg svg>
+| <svg plaintext>
+| "a"
+| "b"
+
+#data
+<!doctype html><svg><title><plaintext>a</plaintext>b
+#errors
+52: End of file seen and there were open elements.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <svg svg>
+| <svg title>
+| <plaintext>
+| "a</plaintext>b"
+
+#data
+<!doctype html><table><tr><style></script></style>abc
+#errors
+(1,51): foster-parenting-character
+(1,52): foster-parenting-character
+(1,53): foster-parenting-character
+(1,53): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| "abc"
+| <table>
+| <tbody>
+| <tr>
+| <style>
+| "</script>"
+
+#data
+<!doctype html><table><tr><script></style></script>abc
+#errors
+(1,52): foster-parenting-character
+(1,53): foster-parenting-character
+(1,54): foster-parenting-character
+(1,54): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| "abc"
+| <table>
+| <tbody>
+| <tr>
+| <script>
+| "</style>"
+
+#data
+<!doctype html><table><caption><style></script></style>abc
+#errors
+(1,58): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <table>
+| <caption>
+| <style>
+| "</script>"
+| "abc"
+
+#data
+<!doctype html><table><td><style></script></style>abc
+#errors
+(1,26): unexpected-cell-in-table-body
+(1,53): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <table>
+| <tbody>
+| <tr>
+| <td>
+| <style>
+| "</script>"
+| "abc"
+
+#data
+<!doctype html><select><script></style></script>abc
+#errors
+(1,51): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+| <script>
+| "</style>"
+| "abc"
+
+#data
+<!doctype html><table><select><script></style></script>abc
+#errors
+1:23: ERROR: Start tag 'select' isn't allowed here. Currently open tags: html, body, table.
+1:56: ERROR: Character tokens aren't legal here
+1:57: ERROR: Character tokens aren't legal here
+1:58: ERROR: Character tokens aren't legal here
+1:59: ERROR: Premature end of file. Currently open tags: html, body, table, select.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+| <script>
+| "</style>"
+| "abc"
+| <table>
+
+#data
+<!doctype html><table><tr><select><script></style></script>abc
+#errors
+1:27: ERROR: Start tag 'select' isn't allowed here. Currently open tags: html, body, table, tbody, tr.
+1:60: ERROR: Character tokens aren't legal here
+1:61: ERROR: Character tokens aren't legal here
+1:62: ERROR: Character tokens aren't legal here
+1:63: ERROR: Premature end of file. Currently open tags: html, body, table, tbody, tr, select.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+| <script>
+| "</style>"
+| "abc"
+| <table>
+| <tbody>
+| <tr>
+
+#data
+<!doctype html><frameset></frameset><noframes>abc
+#errors
+(1,49): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+| <noframes>
+| "abc"
+
+#data
+<!doctype html><frameset></frameset><noframes>abc</noframes><!--abc-->
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+| <noframes>
+| "abc"
+| <!-- abc -->
+
+#data
+<!doctype html><frameset></frameset></html><noframes>abc
+#errors
+(1,56): expected-named-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+| <noframes>
+| "abc"
+
+#data
+<!doctype html><frameset></frameset></html><noframes>abc</noframes><!--abc-->
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+| <noframes>
+| "abc"
+| <!-- abc -->
+
+#data
+<!doctype html><table><tr></tbody><tfoot>
+#errors
+(1,41): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <table>
+| <tbody>
+| <tr>
+| <tfoot>
+
+#data
+<!doctype html><table><td><svg></svg>abc<td>
+#errors
+(1,26): unexpected-cell-in-table-body
+(1,44): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <table>
+| <tbody>
+| <tr>
+| <td>
+| <svg svg>
+| "abc"
+| <td>
diff --git a/tests/data/tree-construction/tests19.dat b/tests/data/tree-construction/tests19.dat
new file mode 100644
index 00000000..20cdeabc
--- /dev/null
+++ b/tests/data/tree-construction/tests19.dat
@@ -0,0 +1,1398 @@
+#data
+<!doctype html><math><mn DefinitionUrl="foo">
+#errors
+(1,45): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <math math>
+| <math mn>
+| definitionURL="foo"
+
+#data
+<!doctype html><html></p><!--foo-->
+#errors
+(1,25): end-tag-after-implied-root
+#document
+| <!DOCTYPE html>
+| <html>
+| <!-- foo -->
+| <head>
+| <body>
+
+#data
+<!doctype html><head></head></p><!--foo-->
+#errors
+(1,32): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <!-- foo -->
+| <body>
+
+#data
+<!doctype html><body><p><pre>
+#errors
+(1,29): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <pre>
+
+#data
+<!doctype html><body><p><listing>
+#errors
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <listing>
+
+#data
+<!doctype html><p><plaintext>
+#errors
+(1,29): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <plaintext>
+
+#data
+<!doctype html><p><h1>
+#errors
+(1,22): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <h1>
+
+#data
+<!doctype html><isindex type="hidden">
+#errors
+(1,38): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <isindex>
+| type="hidden"
+
+#data
+<!doctype html><ruby><p><rp>
+#errors
+(1,28): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <ruby>
+| <p>
+| <rp>
+
+#data
+<!doctype html><ruby><div><span><rp>
+#errors
+(1,36): XXX-undefined-error
+(1,36): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <ruby>
+| <div>
+| <span>
+| <rp>
+
+#data
+<!doctype html><ruby><div><p><rp>
+#errors
+(1,33): XXX-undefined-error
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <ruby>
+| <div>
+| <p>
+| <rp>
+
+#data
+<!doctype html><ruby><p><rt>
+#errors
+(1,28): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <ruby>
+| <p>
+| <rt>
+
+#data
+<!doctype html><ruby><div><span><rt>
+#errors
+(1,36): XXX-undefined-error
+(1,36): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <ruby>
+| <div>
+| <span>
+| <rt>
+
+#data
+<!doctype html><ruby><div><p><rt>
+#errors
+(1,33): XXX-undefined-error
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <ruby>
+| <div>
+| <p>
+| <rt>
+
+#data
+<html><ruby>a<rb>b<rt></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <body>
+| <ruby>
+| "a"
+| <rb>
+| "b"
+| <rt>
+
+#data
+<html><ruby>a<rp>b<rt></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <body>
+| <ruby>
+| "a"
+| <rp>
+| "b"
+| <rt>
+
+#data
+<html><ruby>a<rt>b<rt></ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <body>
+| <ruby>
+| "a"
+| <rt>
+| "b"
+| <rt>
+
+#data
+<html><ruby>a<rtc>b<rt>c<rb>d</ruby></html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+| <html>
+| <head>
+| <body>
+| <ruby>
+| "a"
+| <rtc>
+| "b"
+| <rt>
+| "c"
+| <rb>
+| "d"
+
+#data
+<!doctype html><math/><foo>
+#errors
+(1,27): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <math math>
+| <foo>
+
+#data
+<!doctype html><svg/><foo>
+#errors
+(1,26): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <svg svg>
+| <foo>
+
+#data
+<!doctype html><div></body><!--foo-->
+#errors
+(1,27): expected-one-end-tag-but-got-another
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <div>
+| <!-- foo -->
+
+#data
+<!doctype html><h1><div><h3><span></h1>foo
+#errors
+(1,39): end-tag-too-early
+(1,42): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <h1>
+| <div>
+| <h3>
+| <span>
+| "foo"
+
+#data
+<!doctype html><p></h3>foo
+#errors
+(1,23): end-tag-too-early
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| "foo"
+
+#data
+<!doctype html><h3><li>abc</h2>foo
+#errors
+(1,31): end-tag-too-early
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <h3>
+| <li>
+| "abc"
+| "foo"
+
+#data
+<!doctype html><table>abc<!--foo-->
+#errors
+(1,23): foster-parenting-character
+(1,24): foster-parenting-character
+(1,25): foster-parenting-character
+(1,35): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| "abc"
+| <table>
+| <!-- foo -->
+
+#data
+<!doctype html><table> <!--foo-->
+#errors
+(1,34): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <table>
+| " "
+| <!-- foo -->
+
+#data
+<!doctype html><table> b <!--foo-->
+#errors
+(1,23): foster-parenting-character
+(1,24): foster-parenting-character
+(1,25): foster-parenting-character
+(1,35): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| " b "
+| <table>
+| <!-- foo -->
+
+#data
+<!doctype html><select><option><option>
+#errors
+(1,39): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+| <option>
+| <option>
+
+#data
+<!doctype html><select><option></optgroup>
+#errors
+(1,42): unexpected-end-tag-in-select
+(1,42): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+| <option>
+
+#data
+<!doctype html><dd><optgroup><dd>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <dd>
+| <optgroup>
+| <dd>
+
+#data
+<!doctype html><p><math><mi><p><h1>
+#errors
+(1,35): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <math math>
+| <math mi>
+| <p>
+| <h1>
+
+#data
+<!doctype html><p><math><mo><p><h1>
+#errors
+(1,35): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <math math>
+| <math mo>
+| <p>
+| <h1>
+
+#data
+<!doctype html><p><math><mn><p><h1>
+#errors
+(1,35): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <math math>
+| <math mn>
+| <p>
+| <h1>
+
+#data
+<!doctype html><p><math><ms><p><h1>
+#errors
+(1,35): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <math math>
+| <math ms>
+| <p>
+| <h1>
+
+#data
+<!doctype html><p><math><mtext><p><h1>
+#errors
+(1,38): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <math math>
+| <math mtext>
+| <p>
+| <h1>
+
+#data
+<!doctype html><frameset></noframes>
+#errors
+(1,36): unexpected-end-tag-in-frameset
+(1,36): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+
+#data
+<!doctype html><html c=d><body></html><html a=b>
+#errors
+(1,48): non-html-root
+#document
+| <!DOCTYPE html>
+| <html>
+| a="b"
+| c="d"
+| <head>
+| <body>
+
+#data
+<!doctype html><html c=d><frameset></frameset></html><html a=b>
+#errors
+(1,63): non-html-root
+#document
+| <!DOCTYPE html>
+| <html>
+| a="b"
+| c="d"
+| <head>
+| <frameset>
+
+#data
+<!doctype html><html><frameset></frameset></html><!--foo-->
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+| <!-- foo -->
+
+#data
+<!doctype html><html><frameset></frameset></html>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+| " "
+
+#data
+<!doctype html><html><frameset></frameset></html>abc
+#errors
+(1,50): expected-eof-but-got-char
+(1,51): expected-eof-but-got-char
+(1,52): expected-eof-but-got-char
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+
+#data
+<!doctype html><html><frameset></frameset></html><p>
+#errors
+(1,52): expected-eof-but-got-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+
+#data
+<!doctype html><html><frameset></frameset></html></p>
+#errors
+(1,53): expected-eof-but-got-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+
+#data
+<html><frameset></frameset></html><!doctype html>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,49): unexpected-doctype
+#document
+| <html>
+| <head>
+| <frameset>
+
+#data
+<!doctype html><body><frameset>
+#errors
+(1,31): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+
+#data
+<!doctype html><p><frameset><frame>
+#errors
+(1,28): unexpected-start-tag
+(1,35): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+| <frame>
+
+#data
+<!doctype html><p>a<frameset>
+#errors
+(1,29): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| "a"
+
+#data
+<!doctype html><p> <frameset><frame>
+#errors
+(1,29): unexpected-start-tag
+(1,36): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+| <frame>
+
+#data
+<!doctype html><pre><frameset>
+#errors
+(1,30): unexpected-start-tag
+(1,30): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <pre>
+
+#data
+<!doctype html><listing><frameset>
+#errors
+(1,34): unexpected-start-tag
+(1,34): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <listing>
+
+#data
+<!doctype html><li><frameset>
+#errors
+(1,29): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <li>
+
+#data
+<!doctype html><dd><frameset>
+#errors
+(1,29): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <dd>
+
+#data
+<!doctype html><dt><frameset>
+#errors
+(1,29): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <dt>
+
+#data
+<!doctype html><button><frameset>
+#errors
+(1,33): unexpected-start-tag
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <button>
+
+#data
+<!doctype html><applet><frameset>
+#errors
+(1,33): unexpected-start-tag
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <applet>
+
+#data
+<!doctype html><marquee><frameset>
+#errors
+(1,34): unexpected-start-tag
+(1,34): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <marquee>
+
+#data
+<!doctype html><object><frameset>
+#errors
+(1,33): unexpected-start-tag
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <object>
+
+#data
+<!doctype html><table><frameset>
+#errors
+(1,32): unexpected-start-tag-implies-table-voodoo
+(1,32): unexpected-start-tag
+(1,32): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <table>
+
+#data
+<!doctype html><area><frameset>
+#errors
+(1,31): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <area>
+
+#data
+<!doctype html><basefont><frameset>
+#errors
+(1,35): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <basefont>
+| <frameset>
+
+#data
+<!doctype html><bgsound><frameset>
+#errors
+(1,34): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <bgsound>
+| <frameset>
+
+#data
+<!doctype html><br><frameset>
+#errors
+(1,29): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <br>
+
+#data
+<!doctype html><embed><frameset>
+#errors
+(1,32): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <embed>
+
+#data
+<!doctype html><img><frameset>
+#errors
+(1,30): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <img>
+
+#data
+<!doctype html><input><frameset>
+#errors
+(1,32): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <input>
+
+#data
+<!doctype html><keygen><frameset>
+#errors
+(1,33): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <keygen>
+
+#data
+<!doctype html><wbr><frameset>
+#errors
+(1,30): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <wbr>
+
+#data
+<!doctype html><hr><frameset>
+#errors
+(1,29): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <hr>
+
+#data
+<!doctype html><textarea></textarea><frameset>
+#errors
+(1,46): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <textarea>
+
+#data
+<!doctype html><xmp></xmp><frameset>
+#errors
+(1,36): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <xmp>
+
+#data
+<!doctype html><iframe></iframe><frameset>
+#errors
+(1,42): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <iframe>
+
+#data
+<!doctype html><select></select><frameset>
+#errors
+(1,42): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+
+#data
+<!doctype html><svg></svg><frameset><frame>
+#errors
+(1,36): unexpected-start-tag
+(1,43): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+| <frame>
+
+#data
+<!doctype html><math></math><frameset><frame>
+#errors
+(1,38): unexpected-start-tag
+(1,45): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+| <frame>
+
+#data
+<!doctype html><svg><foreignObject><div> <frameset><frame>
+#errors
+(1,51): unexpected-start-tag
+(1,58): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+| <frame>
+
+#data
+<!doctype html><svg>a</svg><frameset><frame>
+#errors
+(1,37): unexpected-start-tag
+(1,44): unexpected-start-tag-ignored
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <svg svg>
+| "a"
+
+#data
+<!doctype html><svg> </svg><frameset><frame>
+#errors
+(1,37): unexpected-start-tag
+(1,44): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+| <frame>
+
+#data
+<html>aaa<frameset></frameset>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,19): unexpected-start-tag
+(1,30): unexpected-end-tag
+#document
+| <html>
+| <head>
+| <body>
+| "aaa"
+
+#data
+<html> a <frameset></frameset>
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,19): unexpected-start-tag
+(1,30): unexpected-end-tag
+#document
+| <html>
+| <head>
+| <body>
+| "a "
+
+#data
+<!doctype html><div><frameset>
+#errors
+(1,30): unexpected-start-tag
+(1,30): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+
+#data
+<!doctype html><div><body><frameset>
+#errors
+(1,26): unexpected-start-tag
+(1,36): unexpected-start-tag
+(1,36): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <div>
+
+#data
+<!doctype html><p><math></p>a
+#errors
+(1,28): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <math math>
+| "a"
+
+#data
+<!doctype html><p><math><mn><span></p>a
+#errors
+(1,38): unexpected-end-tag
+(1,39): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <math math>
+| <math mn>
+| <span>
+| <p>
+| "a"
+
+#data
+<!doctype html><math></html>
+#errors
+(1,28): unexpected-end-tag
+(1,28): expected-one-end-tag-but-got-another
+(1,28): unexpected-end-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <math math>
+
+#data
+<!doctype html><meta charset="ascii">
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <meta>
+| charset="ascii"
+| <body>
+
+#data
+<!doctype html><meta http-equiv="content-type" content="text/html;charset=ascii">
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <meta>
+| content="text/html;charset=ascii"
+| http-equiv="content-type"
+| <body>
+
+#data
+<!doctype html><head><!--aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa--><meta charset="utf8">
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <!-- aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa -->
+| <meta>
+| charset="utf8"
+| <body>
+
+#data
+<!doctype html><html a=b><head></head><html c=d>
+#errors
+(1,48): non-html-root
+#document
+| <!DOCTYPE html>
+| <html>
+| a="b"
+| c="d"
+| <head>
+| <body>
+
+#data
+<!doctype html><image/>
+#errors
+(1,23): image-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <img>
+
+#data
+<!doctype html>a<i>b<table>c<b>d</i>e</b>f
+#errors
+(1,28): foster-parenting-character
+(1,31): foster-parenting-start-tag
+(1,32): foster-parenting-character
+(1,36): foster-parenting-end-tag
+(1,36): adoption-agency-1.3
+(1,37): foster-parenting-character
+(1,41): foster-parenting-end-tag
+(1,42): foster-parenting-character
+(1,42): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| "a"
+| <i>
+| "bc"
+| <b>
+| "de"
+| "f"
+| <table>
+
+#data
+<!doctype html><table><i>a<b>b<div>c<a>d</i>e</b>f
+#errors
+(1,25): foster-parenting-start-tag
+(1,26): foster-parenting-character
+(1,29): foster-parenting-start-tag
+(1,30): foster-parenting-character
+(1,35): foster-parenting-start-tag
+(1,36): foster-parenting-character
+(1,39): foster-parenting-start-tag
+(1,40): foster-parenting-character
+(1,44): foster-parenting-end-tag
+(1,44): adoption-agency-1.3
+(1,44): adoption-agency-1.3
+(1,45): foster-parenting-character
+(1,49): foster-parenting-end-tag
+(1,49): adoption-agency-1.3
+(1,49): adoption-agency-1.3
+(1,50): foster-parenting-character
+(1,50): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <i>
+| "a"
+| <b>
+| "b"
+| <b>
+| <div>
+| <b>
+| <i>
+| "c"
+| <a>
+| "d"
+| <a>
+| "e"
+| <a>
+| "f"
+| <table>
+
+#data
+<!doctype html><i>a<b>b<div>c<a>d</i>e</b>f
+#errors
+(1,37): adoption-agency-1.3
+(1,37): adoption-agency-1.3
+(1,42): adoption-agency-1.3
+(1,42): adoption-agency-1.3
+(1,43): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <i>
+| "a"
+| <b>
+| "b"
+| <b>
+| <div>
+| <b>
+| <i>
+| "c"
+| <a>
+| "d"
+| <a>
+| "e"
+| <a>
+| "f"
+
+#data
+<!doctype html><table><i>a<b>b<div>c</i>
+#errors
+(1,25): foster-parenting-start-tag
+(1,26): foster-parenting-character
+(1,29): foster-parenting-start-tag
+(1,30): foster-parenting-character
+(1,35): foster-parenting-start-tag
+(1,36): foster-parenting-character
+(1,40): foster-parenting-end-tag
+(1,40): adoption-agency-1.3
+(1,40): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <i>
+| "a"
+| <b>
+| "b"
+| <b>
+| <div>
+| <i>
+| "c"
+| <table>
+
+#data
+<!doctype html><table><i>a<div>b<tr>c<b>d</i>e
+#errors
+(1,25): foster-parenting-start-tag
+(1,26): foster-parenting-character
+(1,31): foster-parenting-start-tag
+(1,32): foster-parenting-character
+(1,37): foster-parenting-character
+(1,40): foster-parenting-start-tag
+(1,41): foster-parenting-character
+(1,45): foster-parenting-end-tag
+(1,45): adoption-agency-1.3
+(1,46): foster-parenting-character
+(1,46): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <i>
+| "a"
+| <div>
+| "b"
+| <i>
+| "c"
+| <b>
+| "d"
+| <b>
+| "e"
+| <table>
+| <tbody>
+| <tr>
+
+#data
+<!doctype html><table><td><table><i>a<div>b<b>c</i>d
+#errors
+(1,26): unexpected-cell-in-table-body
+(1,36): foster-parenting-start-tag
+(1,37): foster-parenting-character
+(1,42): foster-parenting-start-tag
+(1,43): foster-parenting-character
+(1,46): foster-parenting-start-tag
+(1,47): foster-parenting-character
+(1,51): foster-parenting-end-tag
+(1,51): adoption-agency-1.3
+(1,51): adoption-agency-1.3
+(1,52): foster-parenting-character
+(1,52): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <table>
+| <tbody>
+| <tr>
+| <td>
+| <i>
+| "a"
+| <div>
+| <i>
+| "b"
+| <b>
+| "c"
+| <b>
+| "d"
+| <table>
+
+#data
+<!doctype html><body><bgsound>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <bgsound>
+
+#data
+<!doctype html><body><basefont>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <basefont>
+
+#data
+<!doctype html><a><b></a><basefont>
+#errors
+(1,25): adoption-agency-1.3
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <a>
+| <b>
+| <basefont>
+
+#data
+<!doctype html><a><b></a><bgsound>
+#errors
+(1,25): adoption-agency-1.3
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <a>
+| <b>
+| <bgsound>
+
+#data
+<!doctype html><figcaption><article></figcaption>a
+#errors
+(1,49): end-tag-too-early
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <figcaption>
+| <article>
+| "a"
+
+#data
+<!doctype html><summary><article></summary>a
+#errors
+(1,43): end-tag-too-early
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <summary>
+| <article>
+| "a"
+
+#data
+<!doctype html><p><a><plaintext>b
+#errors
+(1,32): unexpected-end-tag
+(1,33): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <a>
+| <plaintext>
+| <a>
+| "b"
+
+#data
+<!DOCTYPE html><div>a<a></div>b<p>c</p>d
+#errors
+(1,30): end-tag-too-early
+(1,40): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <div>
+| "a"
+| <a>
+| <a>
+| "b"
+| <p>
+| "c"
+| "d"
diff --git a/tests/data/tree-construction/tests2.dat b/tests/data/tree-construction/tests2.dat
new file mode 100644
index 00000000..9232edde
--- /dev/null
+++ b/tests/data/tree-construction/tests2.dat
@@ -0,0 +1,831 @@
+#data
+<!DOCTYPE html>Test
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| "Test"
+
+#data
+<textarea>test</div>test
+#errors
+(1,10): expected-doctype-but-got-start-tag
+(1,24): expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <textarea>
+| "test</div>test"
+
+#data
+<table><td>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,11): unexpected-cell-in-table-body
+(1,11): expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <table>
+| <tbody>
+| <tr>
+| <td>
+
+#data
+<table><td>test</tbody></table>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,11): unexpected-cell-in-table-body
+#document
+| <html>
+| <head>
+| <body>
+| <table>
+| <tbody>
+| <tr>
+| <td>
+| "test"
+
+#data
+<frame>test
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,7): unexpected-start-tag-ignored
+#document
+| <html>
+| <head>
+| <body>
+| "test"
+
+#data
+<!DOCTYPE html><frameset>test
+#errors
+(1,29): unexpected-char-in-frameset
+(1,29): unexpected-char-in-frameset
+(1,29): unexpected-char-in-frameset
+(1,29): unexpected-char-in-frameset
+(1,29): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+
+#data
+<!DOCTYPE html><frameset> te st
+#errors
+(1,29): unexpected-char-in-frameset
+(1,29): unexpected-char-in-frameset
+(1,29): unexpected-char-in-frameset
+(1,29): unexpected-char-in-frameset
+(1,29): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+| " "
+
+#data
+<!DOCTYPE html><frameset></frameset> te st
+#errors
+(1,29): unexpected-char-after-frameset
+(1,29): unexpected-char-after-frameset
+(1,29): unexpected-char-after-frameset
+(1,29): unexpected-char-after-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+| " "
+
+#data
+<!DOCTYPE html><frameset><!DOCTYPE html>
+#errors
+(1,40): unexpected-doctype
+(1,40): eof-in-frameset
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <frameset>
+
+#data
+<!DOCTYPE html><font><p><b>test</font>
+#errors
+(1,38): adoption-agency-1.3
+(1,38): adoption-agency-1.3
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <font>
+| <p>
+| <font>
+| <b>
+| "test"
+
+#data
+<!DOCTYPE html><dt><div><dd>
+#errors
+(1,28): end-tag-too-early
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <dt>
+| <div>
+| <dd>
+
+#data
+<script></x
+#errors
+(1,8): expected-doctype-but-got-start-tag
+(1,11): expected-named-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <script>
+| "</x"
+| <body>
+
+#data
+<table><plaintext><td>
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,18): unexpected-start-tag-implies-table-voodoo
+(1,22): foster-parenting-character-in-table
+(1,22): foster-parenting-character-in-table
+(1,22): foster-parenting-character-in-table
+(1,22): foster-parenting-character-in-table
+(1,22): eof-in-table
+#document
+| <html>
+| <head>
+| <body>
+| <plaintext>
+| "<td>"
+| <table>
+
+#data
+<plaintext></plaintext>
+#errors
+(1,11): expected-doctype-but-got-start-tag
+(1,23): expected-closing-tag-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+| <plaintext>
+| "</plaintext>"
+
+#data
+<!DOCTYPE html><table><tr>TEST
+#errors
+(1,30): foster-parenting-character-in-table
+(1,30): foster-parenting-character-in-table
+(1,30): foster-parenting-character-in-table
+(1,30): foster-parenting-character-in-table
+(1,30): eof-in-table
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| "TEST"
+| <table>
+| <tbody>
+| <tr>
+
+#data
+<!DOCTYPE html><body t1=1><body t2=2><body t3=3 t4=4>
+#errors
+(1,37): unexpected-start-tag
+(1,53): unexpected-start-tag
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| t1="1"
+| t2="2"
+| t3="3"
+| t4="4"
+
+#data
+</b test
+#errors
+(1,8): eof-in-attribute-name
+(1,8): expected-doctype-but-got-eof
+#new-errors
+(1:9) eof-in-tag
+#document
+| <html>
+| <head>
+| <body>
+
+#data
+<!DOCTYPE html></b test<b &=&>X
+#errors
+(1,24): invalid-character-in-attribute-name
+(1,32): named-entity-without-semicolon
+(1,33): attributes-in-end-tag
+(1,33): unexpected-end-tag-before-html
+#new-errors
+(1:24) unexpected-character-in-attribute-name
+(1:33) missing-semicolon-after-character-reference
+(1:33) end-tag-with-attributes
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| "X"
+
+#data
+<!doctypehtml><scrIPt type=text/x-foobar;baz>X</SCRipt
+#errors
+(1,9): need-space-after-doctype
+(1,54): expected-named-closing-tag-but-got-eof
+#new-errors
+(1:10) missing-whitespace-before-doctype-name
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <script>
+| type="text/x-foobar;baz"
+| "X</SCRipt"
+| <body>
+
+#data
+&
+#errors
+(1,1): expected-doctype-but-got-chars
+#document
+| <html>
+| <head>
+| <body>
+| "&"
+
+#data
+&#
+#errors
+(1,2): expected-numeric-entity
+(1,2): expected-doctype-but-got-chars
+#new-errors
+(1:3) absence-of-digits-in-numeric-character-reference
+#document
+| <html>
+| <head>
+| <body>
+| "&#"
+
+#data
+&#X
+#errors
+(1,3): expected-numeric-entity
+(1,3): expected-doctype-but-got-chars
+#new-errors
+(1:4) absence-of-digits-in-numeric-character-reference
+#document
+| <html>
+| <head>
+| <body>
+| "&#X"
+
+#data
+&#x
+#errors
+(1,3): expected-numeric-entity
+(1,3): expected-doctype-but-got-chars
+#new-errors
+(1:4) absence-of-digits-in-numeric-character-reference
+#document
+| <html>
+| <head>
+| <body>
+| "&#x"
+
+#data
+-
+#errors
+(1,4): numeric-entity-without-semicolon
+(1,4): expected-doctype-but-got-chars
+#new-errors
+(1:5) missing-semicolon-after-character-reference
+#document
+| <html>
+| <head>
+| <body>
+| "-"
+
+#data
+&x-test
+#errors
+(1,2): expected-doctype-but-got-chars
+#document
+| <html>
+| <head>
+| <body>
+| "&x-test"
+
+#data
+<!doctypehtml><p><li>
+#errors
+(1,9): need-space-after-doctype
+#new-errors
+(1:10) missing-whitespace-before-doctype-name
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <li>
+
+#data
+<!doctypehtml><p><dt>
+#errors
+(1,9): need-space-after-doctype
+#new-errors
+(1:10) missing-whitespace-before-doctype-name
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <dt>
+
+#data
+<!doctypehtml><p><dd>
+#errors
+(1,9): need-space-after-doctype
+#new-errors
+(1:10) missing-whitespace-before-doctype-name
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <dd>
+
+#data
+<!doctypehtml><p><form>
+#errors
+(1,9): need-space-after-doctype
+(1,23): expected-closing-tag-but-got-eof
+#new-errors
+(1:10) missing-whitespace-before-doctype-name
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| <form>
+
+#data
+<!DOCTYPE html><p></P>X
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <p>
+| "X"
+
+#data
+&
+#errors
+(1,4): named-entity-without-semicolon
+(1,4): expected-doctype-but-got-chars
+#new-errors
+(1:5) missing-semicolon-after-character-reference
+#document
+| <html>
+| <head>
+| <body>
+| "&"
+
+#data
+&AMp;
+#errors
+(1,3): expected-named-entity
+(1,3): expected-doctype-but-got-chars
+#new-errors
+(1:5) unknown-named-character-reference
+#document
+| <html>
+| <head>
+| <body>
+| "&AMp;"
+
+#data
+<!DOCTYPE html><html><head></head><body><thisISasillyTESTelementNameToMakeSureCrazyTagNamesArePARSEDcorrectLY>
+#errors
+(1,110): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <thisisasillytestelementnametomakesurecrazytagnamesareparsedcorrectly>
+
+#data
+<!DOCTYPE html>X</body>X
+#errors
+(1,24): unexpected-char-after-body
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| "XX"
+
+#data
+<!DOCTYPE html><!-- X
+#errors
+(1,21): eof-in-comment
+#new-errors
+(1:22) eof-in-comment
+#document
+| <!DOCTYPE html>
+| <!-- X -->
+| <html>
+| <head>
+| <body>
+
+#data
+<!DOCTYPE html><table><caption>test TEST</caption><td>test
+#errors
+(1,54): unexpected-cell-in-table-body
+(1,58): expected-closing-tag-but-got-eof
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <table>
+| <caption>
+| "test TEST"
+| <tbody>
+| <tr>
+| <td>
+| "test"
+
+#data
+<!DOCTYPE html><select><option><optgroup>
+#errors
+(1,41): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+| <option>
+| <optgroup>
+
+#data
+<!DOCTYPE html><select><optgroup><option></optgroup><option><select><option>
+#errors
+1:61: ERROR: Start tag 'select' isn't allowed here. Currently open tags: html, body, select, option.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+| <optgroup>
+| <option>
+| <option>
+| <option>
+
+#data
+<!DOCTYPE html><select><optgroup><option><optgroup>
+#errors
+(1,51): eof-in-select
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+| <optgroup>
+| <option>
+| <optgroup>
+
+#data
+<!DOCTYPE html><datalist><option>foo</datalist>bar
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <datalist>
+| <option>
+| "foo"
+| "bar"
+
+#data
+<!DOCTYPE html><font><input><input></font>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <font>
+| <input>
+| <input>
+
+#data
+<!DOCTYPE html><!-- XXX - XXX -->
+#errors
+#document
+| <!DOCTYPE html>
+| <!-- XXX - XXX -->
+| <html>
+| <head>
+| <body>
+
+#data
+<!DOCTYPE html><!-- XXX - XXX
+#errors
+(1,29): eof-in-comment
+#new-errors
+(1:30) eof-in-comment
+#document
+| <!DOCTYPE html>
+| <!-- XXX - XXX -->
+| <html>
+| <head>
+| <body>
+
+#data
+<!DOCTYPE html><!-- XXX - XXX - XXX -->
+#errors
+#document
+| <!DOCTYPE html>
+| <!-- XXX - XXX - XXX -->
+| <html>
+| <head>
+| <body>
+
+#data
+<!DOCTYPE html> <!DOCTYPE html>
+#errors
+Line: 1 Col: 31 Unexpected DOCTYPE. Ignored.
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+
+#data
+test
+test
+#errors
+(2,4): expected-doctype-but-got-chars
+#document
+| <html>
+| <head>
+| <body>
+| "test
+test"
+
+#data
+<!DOCTYPE html><body><title>test</body>
+#errors
+#document
+|
+|
+|
+|
+|
+| "test</body>"
+
+#data
+<!DOCTYPE html><body><title>X
+| "X"
+| <meta>
+| name="z"
+| <link>
+| rel="foo"
+| <style>
+| "
+x { content:"</style" } "
+
+#data
+<!DOCTYPE html><select><optgroup></optgroup></select>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+| <select>
+| <optgroup>
+
+#data
+
+
+#errors
+(2,1): expected-doctype-but-got-eof
+#document
+| <html>
+| <head>
+| <body>
+
+#data
+<!DOCTYPE html> <html>
+#errors
+#document
+| <!DOCTYPE html>
+| <html>
+| <head>
+| <body>
+
+#data
+<!DOCTYPE html><script>
+</script> <title>x
+#errors
+#document
+|
+|
+|
+|
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,21): unexpected-start-tag-out-of-my-head
+#document
+|
+|
+|
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,28): unexpected-start-tag-out-of-my-head
+(1,52): unexpected-start-tag-out-of-my-head
+#document
+|
+|
+|
+#errors
+(1,6): expected-doctype-but-got-start-tag
+#document
+|
+|
+|
+|
+| "x"
+| x
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+|
+|
+| --> x
+#errors
+(1,7): expected-doctype-but-got-start-tag
+(1,34): unexpected-end-tag
+#document
+|
+|
+| x
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+|
+|
+| x
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+|
+|
+| x
+#errors
+(1,7): expected-doctype-but-got-start-tag
+#document
+|
+|
+|
+#errors
+#document
+|
+|
+|
+|
+|
+| ddd
+#errors
+(1,6): expected-doctype-but-got-start-tag
+(1,21): unexpected-start-tag-out-of-my-head
+#document
+|
+|
+|
+|
+|
+|