From f3db5e882e7a2a68b41bcb231908bdfb29c35cc9 Mon Sep 17 00:00:00 2001
From: Ruud Poutsma <Ruud.Poutsma@priva.com>
Date: Fri, 9 Oct 2020 19:47:16 +0200
Subject: [PATCH] fix FencedCodeBlock

---
 src/Markdig.Tests/RoundtripSpecs/TestFencedCodeBlock.cs | 1 +
 src/Markdig/Parsers/FencedCodeBlockParser.cs            | 2 ++
 src/Markdig/Renderers/Normalize/CodeBlockRenderer.cs    | 2 ++
 3 files changed, 5 insertions(+)

diff --git a/src/Markdig.Tests/RoundtripSpecs/TestFencedCodeBlock.cs b/src/Markdig.Tests/RoundtripSpecs/TestFencedCodeBlock.cs
index 87428c7f..0fe7d799 100644
--- a/src/Markdig.Tests/RoundtripSpecs/TestFencedCodeBlock.cs
+++ b/src/Markdig.Tests/RoundtripSpecs/TestFencedCodeBlock.cs
@@ -17,6 +17,7 @@ namespace Markdig.Tests.RoundtripSpecs
         [TestCase("\n\n```\nc\n```\n")]
         [TestCase("\n\n```\nc\n```\n\n")]
 
+        [TestCase(" ```\nc\n````")]
         [TestCase("```\nc\n````")]
         [TestCase("p\n\n```\nc\n```")]
         public void Test(string value)
diff --git a/src/Markdig/Parsers/FencedCodeBlockParser.cs b/src/Markdig/Parsers/FencedCodeBlockParser.cs
index 694837c5..37640903 100644
--- a/src/Markdig/Parsers/FencedCodeBlockParser.cs
+++ b/src/Markdig/Parsers/FencedCodeBlockParser.cs
@@ -4,6 +4,7 @@
 
 using Markdig.Helpers;
 using Markdig.Syntax;
+using System.ComponentModel;
 
 namespace Markdig.Parsers
 {
@@ -30,6 +31,7 @@ namespace Markdig.Parsers
             {
                 IndentCount = processor.Indent,
                 LinesBefore = processor.UseLinesBefore(),
+                BeforeWhitespace = processor.PopBeforeWhitespace(processor.Start - 1)
             };
         }
 
diff --git a/src/Markdig/Renderers/Normalize/CodeBlockRenderer.cs b/src/Markdig/Renderers/Normalize/CodeBlockRenderer.cs
index 074641ac..8bc13cca 100644
--- a/src/Markdig/Renderers/Normalize/CodeBlockRenderer.cs
+++ b/src/Markdig/Renderers/Normalize/CodeBlockRenderer.cs
@@ -21,6 +21,7 @@ namespace Markdig.Renderers.Normalize
             renderer.RenderLinesBefore(obj);
             if (obj is FencedCodeBlock fencedCodeBlock)
             {
+                renderer.Write(obj.BeforeWhitespace);
                 var opening = new string(fencedCodeBlock.FencedChar, fencedCodeBlock.OpeningFencedCharCount);
                 renderer.Write(opening);
 
@@ -59,6 +60,7 @@ namespace Markdig.Renderers.Normalize
                 renderer.WriteLeafRawLines(obj, true);
                 var closing = new string(fencedCodeBlock.FencedChar, fencedCodeBlock.ClosingFencedCharCount);
                 renderer.Write(closing);
+                renderer.Write(obj.AfterWhitespace);
             }
             else
             {