From e25a83d03e97edf0d8474ad41ed2edd0a63b19fc Mon Sep 17 00:00:00 2001
From: Andrew Balholm <andybalholm@gmail.com>
Date: Wed, 14 Dec 2011 21:40:31 +1100
Subject: [PATCH] html: close <button> element before opening a new one

Pass tests6.dat, test 13:
<button><button>

| <html>
|   <head>
|   <body>
|     <button>
|     <button>

Also pass tests through test 25:
<table><colgroup>foo

R=nigeltao
CC=golang-dev
https://golang.org/cl/5487072
---
 src/pkg/html/parse.go      | 5 +++++
 src/pkg/html/parse_test.go | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/src/pkg/html/parse.go b/src/pkg/html/parse.go
index 74578c2b227..6618600a153 100644
--- a/src/pkg/html/parse.go
+++ b/src/pkg/html/parse.go
@@ -734,6 +734,11 @@ func inBodyIM(p *parser) bool {
 		case "plaintext":
 			p.popUntil(buttonScopeStopTags, "p")
 			p.addElement(p.tok.Data, p.tok.Attr)
+		case "button":
+			p.popUntil(defaultScopeStopTags, "button")
+			p.reconstructActiveFormattingElements()
+			p.addElement(p.tok.Data, p.tok.Attr)
+			p.framesetOK = false
 		case "optgroup", "option":
 			if p.top().Data == "option" {
 				p.oe.pop()
diff --git a/src/pkg/html/parse_test.go b/src/pkg/html/parse_test.go
index 0eba283b985..f44bf6304ba 100644
--- a/src/pkg/html/parse_test.go
+++ b/src/pkg/html/parse_test.go
@@ -172,7 +172,7 @@ func TestParser(t *testing.T) {
 		{"tests3.dat", -1},
 		{"tests4.dat", -1},
 		{"tests5.dat", -1},
-		{"tests6.dat", 13},
+		{"tests6.dat", 26},
 	}
 	for _, tf := range testFiles {
 		f, err := os.Open("testdata/webkit/" + tf.filename)
