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-rw-r--r--neb/__init__.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/neb/__init__.py b/neb/__init__.py
index bfbea19..b48b8f9 100644
--- a/neb/__init__.py
+++ b/neb/__init__.py
@@ -26,6 +26,8 @@ def syntaxFunc(symbol, env, ns):
if isinstance(env_func, MultiFunction):
env_func.register(func)
env.register(symbol.name, env_func)
+ else:
+ raise InterpretPanic(symbol, "not a multifunc!")
else:
mf = MultiFunction(symbol.name)
mf.register(func)