From b6692bb26ce954b1a210c9a0d2438c55e38ddb9e Mon Sep 17 00:00:00 2001
From: Cyrille David <cyrille@qonto.eu>
Date: Wed, 29 Jan 2020 16:51:41 +0100
Subject: [PATCH 1/2] Add a failing test

---
 tests/tokenizer-tests.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tests/tokenizer-tests.ts b/tests/tokenizer-tests.ts
index 98538f1..00b7a0e 100644
--- a/tests/tokenizer-tests.ts
+++ b/tests/tokenizer-tests.ts
@@ -228,6 +228,12 @@ QUnit.test('The title element content is always text', function(assert) {
   assert.deepEqual(tokens, [startTag('title'), chars('"hey <b>there</b><!-- comment -->'), endTag('title')]);
 });
 
+// https://github.com/emberjs/ember.js/issues/18530
+QUnit.test('Title element content is not text', function(assert) {
+  let tokens = tokenize("<Title><!-- hello --></Title>");
+  assert.deepEqual(tokens, [startTag('title'), comment(' hello '), endTag('title')]);
+});
+
 // https://html.spec.whatwg.org/multipage/semantics.html#the-style-element
 QUnit.test('The style element content is always text', function(assert) {
   let tokens = tokenize("<style>&quot;hey <b>there</b><!-- comment --></style>");

From d7c91befad14dd52a4868dc9091d47fb7f48f923 Mon Sep 17 00:00:00 2001
From: Cyrille David <cyrille@qonto.eu>
Date: Wed, 29 Jan 2020 16:55:02 +0100
Subject: [PATCH 2/2] Do not lowercase to match opening / closing tags

---
 src/evented-tokenizer.ts | 4 ++--
 tests/tokenizer-tests.ts | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/evented-tokenizer.ts b/src/evented-tokenizer.ts
index 80d0b4b..6d6f78b 100644
--- a/src/evented-tokenizer.ts
+++ b/src/evented-tokenizer.ts
@@ -115,7 +115,7 @@ export default class EventedTokenizer {
   }
 
   private isIgnoredEndTag(): boolean {
-    let tag = this.tagNameBuffer.toLowerCase();
+    let tag = this.tagNameBuffer;
 
     return (tag === 'title' && this.input.substring(this.index, this.index + 8) !== '</title>') ||
       (tag === 'style' && this.input.substring(this.index, this.index + 8) !== '</style>') ||
@@ -146,7 +146,7 @@ export default class EventedTokenizer {
 
     data() {
       let char = this.peek();
-      let tag = this.tagNameBuffer.toLowerCase();
+      let tag = this.tagNameBuffer;
 
       if (char === '<' && !this.isIgnoredEndTag()) {
         this.delegate.finishData();
diff --git a/tests/tokenizer-tests.ts b/tests/tokenizer-tests.ts
index 00b7a0e..486098d 100644
--- a/tests/tokenizer-tests.ts
+++ b/tests/tokenizer-tests.ts
@@ -231,7 +231,7 @@ QUnit.test('The title element content is always text', function(assert) {
 // https://github.com/emberjs/ember.js/issues/18530
 QUnit.test('Title element content is not text', function(assert) {
   let tokens = tokenize("<Title><!-- hello --></Title>");
-  assert.deepEqual(tokens, [startTag('title'), comment(' hello '), endTag('title')]);
+  assert.deepEqual(tokens, [startTag('Title'), comment(' hello '), endTag('Title')]);
 });
 
 // https://html.spec.whatwg.org/multipage/semantics.html#the-style-element