From 6edac456584ae52cc91767b8b756b1eae91a0f41 Mon Sep 17 00:00:00 2001
From: Mahdi Zand <80402823+mzand111@users.noreply.github.com>
Date: Tue, 10 Dec 2024 18:52:19 +0300
Subject: [PATCH] Update MarkdownHeaderTextSplitter.cs

This change prevents errors when the markdown file includes lines that start with # but have no following characters.
---
 .../Abstractions/src/Text/MarkdownHeaderTextSplitter.cs       | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Splitters/Abstractions/src/Text/MarkdownHeaderTextSplitter.cs b/src/Splitters/Abstractions/src/Text/MarkdownHeaderTextSplitter.cs
index cf551724..18a4b706 100644
--- a/src/Splitters/Abstractions/src/Text/MarkdownHeaderTextSplitter.cs
+++ b/src/Splitters/Abstractions/src/Text/MarkdownHeaderTextSplitter.cs
@@ -122,6 +122,8 @@ private bool IsHeader(string line, out int len)
         len = 0;
         foreach (var header in _headersToSplitOn)
         {
+            if (line.Length <= header.Length + 1)
+                return false;//Empty lines starting with #s should not be considered as headers. Removing this line would result in exceptions in that conditions
             if (line.Trim().StartsWith(header, StringComparison.Ordinal) && line[header.Length] == ' ')
             {
                 len = header.Length;
@@ -131,4 +133,4 @@ private bool IsHeader(string line, out int len)
 
         return false;
     }
-}
\ No newline at end of file
+}