Merge branch 'devel' into feature/issue-8-invalid-entity-handling

# Conflicts:
#	src/AngleSharp.Xml.Tests/Tokenizer/XmlTokenization.cs

Author: kasthack

src/AngleSharp.Xml.Tests/Tokenizer/XmlTokenization.cs

@@ -211,5 +211,32 @@ public void XmlTokenizerTagWithInvalidReferenceSuppresses()
             Assert.AreEqual("baz", foo.Attributes[1].Key);
             Assert.AreEqual("123", foo.Attributes[1].Value);
         }
+
+        [Test]
+        public void XmlTokenizerTagThrowsWithADiamond()
+        {
+            var s = new TextSource("<foo bar=\"a < b\">");
+
+            var t = CreateTokenizer(s);
+            t.IsSuppressingErrors = false;
+            Assert.Throws<XmlParseException>(() => t.Get());
+        }
+
+        [Test]
+        public void XmlTokenizerTagSuppressesWithADiamond()
+        {
+            var s = new TextSource("<foo bar=\"a < b\">");
+            var t = CreateTokenizer(s);
+            t.IsSuppressingErrors = true;
+            var foo = t.Get() as XmlTagToken;
+
+            Assert.IsNotNull(foo);
+            Assert.AreEqual(XmlTokenType.StartTag, foo.Type);
+            Assert.IsFalse(foo.IsSelfClosing);
+            Assert.AreEqual("foo", foo.Name);
+            Assert.AreEqual(1, foo.Attributes.Count);
+            Assert.AreEqual("bar", foo.Attributes[0].Key);
+            Assert.AreEqual("a < b", foo.Attributes[0].Value);
+        }
     }
 }

src/AngleSharp.Xml/Parser/XmlTokenizer.cs

@@ -1062,7 +1062,7 @@ private XmlToken AttributeValue(XmlTagToken tag, Char quote)
                 if (c == Symbols.EndOfFile)
                     throw XmlParseError.EOF.At(GetCurrentPosition());
 
-                if (c == Symbols.LessThan)
+                if (c == Symbols.LessThan && !IsSuppressingErrors)
                     throw XmlParseError.XmlLtInAttributeValue.At(GetCurrentPosition());
 
                 if (c == Symbols.Ampersand)