From d82e9468f0f26991dcd67dbb8c3696d6c31bc31d Mon Sep 17 00:00:00 2001
From: Dan <14043624+delivrance@users.noreply.github.com>
Date: Thu, 28 May 2020 15:43:42 +0200
Subject: [PATCH] Strip whitespace characters from the end of the message but
 preserve closing tags

---
 pyrogram/client/parser/html.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/pyrogram/client/parser/html.py b/pyrogram/client/parser/html.py
index d614fb2f..35dd770c 100644
--- a/pyrogram/client/parser/html.py
+++ b/pyrogram/client/parser/html.py
@@ -111,10 +111,11 @@ class HTML:
         self.client = client
 
     def parse(self, text: str):
-        text = utils.add_surrogates(text)
+        # Strip whitespace characters from the end of the message, but preserve closing tags
+        text = re.sub(r"\s*(</[\w\W]*>)\s*$", r"\1", text)
 
         parser = Parser(self.client)
-        parser.feed(text)
+        parser.feed(utils.add_surrogates(text))
         parser.close()
 
         if parser.tag_entities: