make commandhandler case insensitive

telegram/ext/commandhandler.py

@@ -86,9 +86,9 @@ class CommandHandler(Handler):
             _str = str  # Python 3
 
         if isinstance(command, _str):
-            self.command = [command]
+            self.command = [command.lower()]
         else:
-            self.command = command
+            self.command = [x.lower() for x in command]
         self.filters = filters
         self.allow_edited = allow_edited
         self.pass_args = pass_args
@@ -117,7 +117,7 @@ class CommandHandler(Handler):
                 else:
                     res = self.filters(message)
 
-                return res and (message.text.startswith('/') and command[0] in self.command
+                return res and (message.text.startswith('/') and command[0].lower() in self.command
                                 and command[1].lower() == message.bot.username.lower())
             else:
                 return False

tests/test_updater.py

@@ -271,6 +271,19 @@ class UpdaterTest(BaseTest, unittest.TestCase):
         sleep(.1)
         self.assertTrue(None is self.received_message)
 
+        # case insensitivity
+        self.reset()
+        message = Message(0, user, None, None, text="/Test", bot=bot)
+        queue.put(Update(update_id=0, message=message))
+        sleep(.1)
+        self.assertTrue(self.received_message, '/Test')
+        handler = CommandHandler('Test', self.telegramHandlerTest)
+        self.updater.dispatcher.add_handler(handler)
+        message = Message(0, user, None, None, text="/test", bot=bot)
+        queue.put(Update(update_id=0, message=message))
+        sleep(.1)
+        self.assertTrue(self.received_message, '/test')
+
         # Remove handler
         d.remove_handler(handler)
         handler = CommandHandler('test', self.telegramHandlerEditedTest, allow_edited=False)