From 09da5f7263e1b8fd2a141e3e2f31c8aec9d7b295 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Tue, 1 Dec 2020 15:41:30 +0100
Subject: [PATCH] LibWeb: Hack the CSS parser to skip over UTF-8 BOM

This is a rather ugly hack that fixes CSS parsing on websites where we
get a stylesheet that starts with a BOM.
---
 Libraries/LibWeb/CSS/Parser/CSSParser.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Libraries/LibWeb/CSS/Parser/CSSParser.cpp b/Libraries/LibWeb/CSS/Parser/CSSParser.cpp
index ef1884e720..e407c52e6f 100644
--- a/Libraries/LibWeb/CSS/Parser/CSSParser.cpp
+++ b/Libraries/LibWeb/CSS/Parser/CSSParser.cpp
@@ -909,6 +909,11 @@ public:
 
     RefPtr<CSS::StyleSheet> parse_sheet()
     {
+        if (peek(0) == (char)0xef && peek(1) == (char)0xbb && peek(2) == (char)0xbf) {
+            // HACK: Skip UTF-8 BOM.
+            index += 3;
+        }
+
         while (index < css.length()) {
             parse_rule();
         }