From aac1f267d7fc015ca5ecdf3f049bf56d72cd19a1 Mon Sep 17 00:00:00 2001
From: Tulir Asokan <tulir@maunium.net>
Date: Wed, 25 Mar 2020 21:26:17 +0200
Subject: [PATCH] Fix exception when running subcommand without enough
 arguments

---
 maubot/handlers/command.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/maubot/handlers/command.py b/maubot/handlers/command.py
index 6687bf9..4b11f47 100644
--- a/maubot/handlers/command.py
+++ b/maubot/handlers/command.py
@@ -164,7 +164,8 @@ class CommandHandler:
     @property
     def __mb_prefix__(self) -> str:
         if self.__mb_parent__:
-            return f"{self.__mb_parent__.__mb_prefix__} {self.__mb_name__}"
+            return (f"!{self.__mb_parent__.__mb_get_name__(self.__bound_instance__)} "
+                    f"{self.__mb_name__}")
         return f"!{self.__mb_name__}"
 
     @property