From ebedc6829d4ecc74b85b80bfc68aac602e32c6fd Mon Sep 17 00:00:00 2001
From: Alexandre Mutel <alexandre_mutel@live.com>
Date: Fri, 28 Dec 2018 10:30:37 +0100
Subject: [PATCH] Fix IndexOutOfRangeException while parsing fenced code block
 with a single trailing space (#276)

---
 src/Markdig.Tests/TestParser.cs              | 7 +++++++
 src/Markdig/Parsers/FencedBlockParserBase.cs | 2 +-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/Markdig.Tests/TestParser.cs b/src/Markdig.Tests/TestParser.cs
index b7b86c5a..6ba9e231 100644
--- a/src/Markdig.Tests/TestParser.cs
+++ b/src/Markdig.Tests/TestParser.cs
@@ -27,6 +27,13 @@ namespace Markdig.Tests
             TestSpec(input, "<p>9&amp;ddr;&amp;*&amp;ddr;&amp;de��__</p>");
         }
 
+        [Test]
+        public void TestInvalidCodeEscape()
+        {
+            var input = "```**Header**	";
+            var html = Markdown.ToHtml(input);
+        }
+
         [Test]
         public void TestEmphasisAndHtmlEntity()
         {
diff --git a/src/Markdig/Parsers/FencedBlockParserBase.cs b/src/Markdig/Parsers/FencedBlockParserBase.cs
index 690866bf..109152a6 100644
--- a/src/Markdig/Parsers/FencedBlockParserBase.cs
+++ b/src/Markdig/Parsers/FencedBlockParserBase.cs
@@ -94,7 +94,7 @@ namespace Markdig.Parsers
 
                 // Skip any spaces after info string
                 firstSpace++;
-                while (true)
+                while (firstSpace <= line.End)
                 {
                     c = line[firstSpace];
                     if (c.IsSpaceOrTab())