Replace Matrix mentions with Telegram mentions (ping)

.gitignore

@@ -122,6 +122,9 @@ Session.vim
 tags
 
 
+#VSCode
+.vscode
+
 ### macOS ###
 *.DS_Store
 .AppleDouble

telematrix/__init__.py

@@ -12,6 +12,7 @@ from datetime import datetime
 from time import time
 from urllib.parse import unquote, quote, urlparse, parse_qs
 from io import BytesIO
+import re
 
 from PIL import Image
 from aiohttp import web, ClientSession
@@ -97,6 +98,7 @@ def format_matrix_msg(form, username, content):
     :return: The formatted string.
     """
     if 'format' in content and content['format'] == 'org.matrix.custom.html':
+        re.sub("<a href=\"https://matrix.to/#/@telegram_([0-9]+):{}\">(.+?)</a>".format(MATRIX_HOST_BARE), "<a href=\"tg://user?id=\\1\">\\2</a>", content['formatted_body'])
         sanitized = sanitize_html(content['formatted_body'])
         return html.escape(form).format(username, sanitized), 'HTML'
     else: