Escape the nick when forming a regexp

hptoad.py

@@ -215,7 +215,7 @@ class Hptoad:
         futures = []
 
         # Has to be redone with the current bot nick.
-        call_regexp = re.compile("^%s[:,]" % self.bot_nick)
+        call_regexp = re.compile("^%s[:,]" % re.escape(self.bot_nick))
 
         for plugin in self.plugins.values():
             future = asyncio.async(plugin.call_chat_message(body, nick,