From fbdd79a8dba56ad8d7425f3a9c3db1dfdd1d8968 Mon Sep 17 00:00:00 2001
From: Simon Forman <sforman@hushmail.com>
Date: Fri, 9 Apr 2021 17:04:54 -0700
Subject: [PATCH] Integer division only please.

---
 joy/library.py | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/joy/library.py b/joy/library.py
index 72516a0..c5d7429 100644
--- a/joy/library.py
+++ b/joy/library.py
@@ -70,8 +70,7 @@ ALIASES = (
     ('and', ['&']),
     ('bool', ['truthy']),
     ('mul', ['*']),
-    ('floordiv', ['/floor', '//']),
-    ('truediv', ['/', 'div']),
+    ('floordiv', ['/floor', '//', '/', 'div']),
     ('mod', ['%', 'rem', 'remainder', 'modulus']),
     ('eq', ['=']),
     ('ge', ['>=']),
@@ -1165,7 +1164,10 @@ def dip(stack, expression, dictionary):
              ... Q x
 
     '''
-    (quote, (x, stack)) = stack
+    try:
+        (quote, (x, stack)) = stack
+    except ValueError:
+        raise StackUnderflowError
     expression = (x, expression)
     return stack, concat(quote, expression), dictionary
 
@@ -1425,7 +1427,7 @@ for F in (
     BinaryBuiltinWrapper(operator.mul),
     BinaryBuiltinWrapper(operator.pow),
     BinaryBuiltinWrapper(operator.sub),
-    BinaryBuiltinWrapper(operator.truediv),
+##    BinaryBuiltinWrapper(operator.truediv),
 
     UnaryBuiltinWrapper(bool),
     UnaryBuiltinWrapper(operator.not_),