From 9600a9ea0bfd522becd73af38b05aefac65e2f82 Mon Sep 17 00:00:00 2001
From: Lonami Exo <totufals@hotmail.com>
Date: Sat, 28 Oct 2017 19:17:18 +0200
Subject: [PATCH] Fix markdown parsing failing if delimiter was last character

---
 telethon/extensions/markdown.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/telethon/extensions/markdown.py b/telethon/extensions/markdown.py
index d3581cf9..2e5a899c 100644
--- a/telethon/extensions/markdown.py
+++ b/telethon/extensions/markdown.py
@@ -84,8 +84,10 @@ def parse(message, delimiters=None):
                     current = Mode.NONE
                 break
 
-        offset += emojiness(message[i])
-        i += 1
+        if i < len(message):
+            offset += emojiness(message[i])
+            i += 1
+
     if result and not isinstance(result[-1], tuple):
         result.pop()
     return message, result