From 962949008fb79158dc95a6f9dc3752bf02689256 Mon Sep 17 00:00:00 2001
From: Lonami Exo <totufals@hotmail.com>
Date: Sun, 23 Jun 2019 21:35:33 +0200
Subject: [PATCH] Add new message entities to markdown/html parsers

---
 telethon/extensions/html.py     | 15 ++++++++++++++-
 telethon/extensions/markdown.py |  4 +++-
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/telethon/extensions/html.py b/telethon/extensions/html.py
index 12b8cc3c..1ea81029 100644
--- a/telethon/extensions/html.py
+++ b/telethon/extensions/html.py
@@ -10,7 +10,8 @@ from .. import helpers
 from ..tl.types import (
     MessageEntityBold, MessageEntityItalic, MessageEntityCode,
     MessageEntityPre, MessageEntityEmail, MessageEntityUrl,
-    MessageEntityTextUrl, MessageEntityMentionName
+    MessageEntityTextUrl, MessageEntityMentionName,
+    MessageEntityUnderline, MessageEntityStrike, MessageEntityBlockquote
 )
 
 
@@ -46,6 +47,12 @@ class HTMLToTelegramParser(HTMLParser):
             EntityType = MessageEntityBold
         elif tag == 'em' or tag == 'i':
             EntityType = MessageEntityItalic
+        elif tag == 'u':
+            EntityType = MessageEntityUnderline
+        elif tag == 'del' or tag == 's':
+            EntityType = MessageEntityStrike
+        elif tag == 'blockquote':
+            EntityType = MessageEntityBlockquote
         elif tag == 'code':
             try:
                 # If we're in the middle of a <pre> tag, this <code> tag is
@@ -162,6 +169,12 @@ def unparse(text, entities):
             html.append('<em>{}</em>'.format(entity_text))
         elif entity_type == MessageEntityCode:
             html.append('<code>{}</code>'.format(entity_text))
+        elif entity_type == MessageEntityUnderline:
+            html.append('<u>{}</u>'.format(entity_text))
+        elif entity_type == MessageEntityStrike:
+            html.append('<del>{}</del>'.format(entity_text))
+        elif entity_type == MessageEntityBlockquote:
+            html.append('<blockquote>{}</blockquote>'.format(entity_text))
         elif entity_type == MessageEntityPre:
             if entity.language:
                 html.append(
diff --git a/telethon/extensions/markdown.py b/telethon/extensions/markdown.py
index b63dc234..8b94c0f5 100644
--- a/telethon/extensions/markdown.py
+++ b/telethon/extensions/markdown.py
@@ -9,12 +9,14 @@ from ..helpers import add_surrogate, del_surrogate, strip_text
 from ..tl import TLObject
 from ..tl.types import (
     MessageEntityBold, MessageEntityItalic, MessageEntityCode,
-    MessageEntityPre, MessageEntityTextUrl, MessageEntityMentionName
+    MessageEntityPre, MessageEntityTextUrl, MessageEntityMentionName,
+    MessageEntityStrike
 )
 
 DEFAULT_DELIMITERS = {
     '**': MessageEntityBold,
     '__': MessageEntityItalic,
+    '~~': MessageEntityStrike,
     '`': MessageEntityCode,
     '```': MessageEntityPre
 }