From a7f89e10051fa9f959b9eb6e0bbfe769a765fd3b Mon Sep 17 00:00:00 2001
From: bnewbold <bnewbold@robocracy.org>
Date: Thu, 20 Dec 2012 02:22:37 +0100
Subject: correct execute fallthrough case

---
 sexpr.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sexpr.py b/sexpr.py
index 60d565f..baea66e 100755
--- a/sexpr.py
+++ b/sexpr.py
@@ -128,7 +128,7 @@ def execute(sexpr, t):
         if sexpr['cval'] == 'l':
             return execute(sexpr['lval'], t) << execute(sexpr['rval'], t)
         raise Exception("unexpected binary: %s" % sexpr['cval'])
-    pass
+    raise Exception("execute: unknown operator: %s" % sexpr['type'])
 
 def play(machine):
     t = 0
-- 
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