Merge branch 'embeddedLanguages' into regexParsing4

src/Workspaces/Core/Portable/EmbeddedLanguages/Common/EmbeddedDiagnostic.cs

@@ -27,7 +27,7 @@ public EmbeddedDiagnostic(string message, TextSpan span)
         }
 
         public override bool Equals(object obj)
-            => obj is EmbeddedDiagnostic rd && Equals(rd);
+            => obj is EmbeddedDiagnostic diagnostic && Equals(diagnostic);
 
         public bool Equals(EmbeddedDiagnostic other)
             => Message == other.Message &&

src/Workspaces/Core/Portable/EmbeddedLanguages/Common/EmbeddedSyntaxNode.cs

@@ -43,8 +43,8 @@ protected EmbeddedSyntaxNode(TSyntaxKind kind)
             Kind = kind;
         }
 
-        public abstract int ChildCount { get; }
-        public abstract EmbeddedSyntaxNodeOrToken<TSyntaxKind, TNode> ChildAt(int index);
+        internal abstract int ChildCount { get; }
+        internal abstract EmbeddedSyntaxNodeOrToken<TSyntaxKind, TNode> ChildAt(int index);
 
         public TextSpan GetSpan()
         {