From 1f0e8845e806e446d39625e21ecdcb0d1c5a8b57 Mon Sep 17 00:00:00 2001
From: Michael Becker <alcexhim@gmail.com>
Date: Fri, 16 Aug 2019 15:00:35 -0400
Subject: [PATCH] Automatically prepend the XML preprocessor directive if not
 present so we generate well-formed XML documents

---
 .../DataFormats/Markup/XML/XMLDataFormat.cs                  | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/CSharp/Libraries/UniversalEditor.Essential/DataFormats/Markup/XML/XMLDataFormat.cs b/CSharp/Libraries/UniversalEditor.Essential/DataFormats/Markup/XML/XMLDataFormat.cs
index e0063bbd..394b5d55 100644
--- a/CSharp/Libraries/UniversalEditor.Essential/DataFormats/Markup/XML/XMLDataFormat.cs
+++ b/CSharp/Libraries/UniversalEditor.Essential/DataFormats/Markup/XML/XMLDataFormat.cs
@@ -940,6 +940,11 @@ namespace UniversalEditor.DataFormats.Markup.XML
 					WriteStartTag(mvarCompensateTopLevelTagName);
 				}
 
+				if (!(mom.Elements.Count > 0 && mom.Elements [0] is MarkupPreprocessorElement && (mom.Elements [0] as MarkupPreprocessorElement).FullName == "xml"))
+				{
+					tw.WriteLine ("<?xml version=\"1.0\" encoding=\"UTF-8\" ?>");
+				}
+
 				foreach (MarkupElement element in mom.Elements)
 				{
 					WriteElement(element, 0);