Merge pull request #45 from ancho/feature/handle-command

use regex match to check if message starts with command

bot.py

@@ -111,9 +111,7 @@ class Bot:
     async def message_cb(self, room, event):
         # Figure out the command
         body = event.body
-        if len(body) == 0:
-            return
-        if body[0] != '!':
+        if not self.starts_with_command(body):
             return
 
         command = body.split().pop(0)
@@ -140,6 +138,11 @@ class Bot:
             await self.send_text(room,
                                  f"Sorry. I don't know what to do. Execute !help to get a list of available commands.")
 
+    @staticmethod
+    def starts_with_command(body):
+        """Checks if body starts with ! and has one or more letters after it"""
+        return re.match(r"^!\w.*", body) is not None
+
     async def invite_cb(self, room, event):
         room: MatrixRoom
         event: InviteEvent