From 6202a0ab323c02150a2f265f6b46395d4455a1c7 Mon Sep 17 00:00:00 2001
From: Andreas Kling <awesomekling@gmail.com>
Date: Thu, 17 Oct 2019 23:54:27 +0200
Subject: [PATCH] LibHTML: Only accumulate Text children's content in inline
 stylesheets

Some inline stylesheets use HTML comments like "<!--blah blah-->".
The HTML parser currently generates a comment child node of the <style>
element whenever this happens, and we don't want the comment itself to
be interpreted as part of the stylesheet.
---
 Libraries/LibHTML/DOM/HTMLStyleElement.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Libraries/LibHTML/DOM/HTMLStyleElement.cpp b/Libraries/LibHTML/DOM/HTMLStyleElement.cpp
index d527b58dcf..e4f71012b8 100644
--- a/Libraries/LibHTML/DOM/HTMLStyleElement.cpp
+++ b/Libraries/LibHTML/DOM/HTMLStyleElement.cpp
@@ -1,5 +1,7 @@
+#include <AK/StringBuilder.h>
 #include <LibHTML/DOM/Document.h>
 #include <LibHTML/DOM/HTMLStyleElement.h>
+#include <LibHTML/DOM/Text.h>
 #include <LibHTML/Parser/CSSParser.h>
 
 HTMLStyleElement::HTMLStyleElement(Document& document, const String& tag_name)
@@ -13,7 +15,12 @@ HTMLStyleElement::~HTMLStyleElement()
 
 void HTMLStyleElement::inserted_into(Node& new_parent)
 {
-    m_stylesheet = parse_css(text_content());
+    StringBuilder builder;
+    for_each_child([&](auto& child) {
+        if (is<Text>(child))
+            builder.append(to<Text>(child).text_content());
+    });
+    m_stylesheet = parse_css(builder.to_string());
     if (m_stylesheet)
         document().add_sheet(*m_stylesheet);
     HTMLElement::inserted_into(new_parent);