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diff --git a/ext/ply/test/yacc_rr_unused.py b/ext/ply/test/yacc_rr_unused.py
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+# -----------------------------------------------------------------------------
+# yacc_rr_unused.py
+#
+# A grammar with reduce/reduce conflicts and a rule that never
+# gets reduced.
+# -----------------------------------------------------------------------------
+import sys
+
+if ".." not in sys.path: sys.path.insert(0,"..")
+import ply.yacc as yacc
+
+tokens = ('A', 'B', 'C')
+
+def p_grammar(p):
+ '''
+ rule1 : rule2 B
+ | rule2 C
+
+ rule2 : rule3 B
+ | rule4
+ | rule5
+
+ rule3 : A
+
+ rule4 : A
+
+ rule5 : A
+ '''
+
+yacc.yacc()