don't attempt recursion when the subcmd is, in fact, an empty string (i.e. text was '[]')

Module.py

@@ -225,7 +225,7 @@ class Module(object):
 
         attempt = what
 
-        if start_idx == -1 or end_idx == -1:
+        if start_idx == -1 or end_idx == -1 or len(subcmd) == 0:
             # no nested commands at all if replypath is a real value, so don't do a damn thing
             if replypath is not None:
                 return attempt