From ddc5ec642da599da5b942a174407bcd5ae32c673 Mon Sep 17 00:00:00 2001
From: Andrew Balholm <andybalholm@gmail.com>
Date: Thu, 10 Nov 2011 08:09:54 +1100
Subject: [PATCH] html: don't emit text token for empty raw text elements.

Pass tests1.dat, test 99:
<script></script></div><title></title><p><p>

| <html>
|   <head>
|     <script>
|     <title>
|   <body>
|     <p>
|     <p>

Also pass tests through test 105:
<ul><li><ul></li><li>a</li></ul></li></ul>

R=nigeltao
CC=golang-dev
https://golang.org/cl/5373043
---
 src/pkg/html/parse_test.go | 3 ++-
 src/pkg/html/token.go      | 6 ++++--
 2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/src/pkg/html/parse_test.go b/src/pkg/html/parse_test.go
index 14863da79f6..8cef0fa8e36 100644
--- a/src/pkg/html/parse_test.go
+++ b/src/pkg/html/parse_test.go
@@ -133,7 +133,7 @@ func TestParser(t *testing.T) {
 		n int
 	}{
 		// TODO(nigeltao): Process all the test cases from all the .dat files.
-		{"tests1.dat", 99},
+		{"tests1.dat", 106},
 		{"tests2.dat", 0},
 		{"tests3.dat", 0},
 	}
@@ -213,4 +213,5 @@ var renderTestBlacklist = map[string]bool{
 	// More cases of <a> being reparented:
 	`<a href="blah">aba<table><a href="foo">br<tr><td></td></tr>x</table>aoe`: true,
 	`<a><table><a></table><p><a><div><a>`:                                     true,
+	`<a><table><td><a><table></table><a></tr><a></table><a>`:                  true,
 }
diff --git a/src/pkg/html/token.go b/src/pkg/html/token.go
index 2c138227b10..78a240a66f1 100644
--- a/src/pkg/html/token.go
+++ b/src/pkg/html/token.go
@@ -552,8 +552,10 @@ func (z *Tokenizer) Next() TokenType {
 	z.data.end = z.raw.end
 	if z.rawTag != "" {
 		z.readRawOrRCDATA()
-		z.tt = TextToken
-		return z.tt
+		if z.data.end > z.data.start {
+			z.tt = TextToken
+			return z.tt
+		}
 	}
 	z.textIsRaw = false
 
