src/HOL/BNF/Tools/bnf_ctr_sugar.ML

 val safe_elim_attrs = @{attributes [elim!]};
 val iff_attrs = @{attributes [iff]};
 val induct_simp_attrs = @{attributes [induct_simp]};
 val nitpick_attrs = @{attributes [nitpick_simp]};
 val simp_attrs = @{attributes [simp]};
-val code_nitpick_simp_attrs = Code.add_default_eqn_attrib :: nitpick_attrs @ simp_attrs;
+val code_nitpick_simp_simp_attrs = Code.add_default_eqn_attrib :: nitpick_attrs @ simp_attrs;
 
 fun unflat_lookup eq xs ys = map (fn xs' => permute_like eq xs xs' ys);
 
 fun mk_half_pairss' _ ([], []) = []
   | mk_half_pairss' indent (x :: xs, _ :: ys) =

 
         val exhaust_case_names_attr = Attrib.internal (K (Rule_Cases.case_names exhaust_cases));
         val cases_type_attr = Attrib.internal (K (Induct.cases_type dataT_name));
 
         val notes =
-          [(caseN, case_thms, code_nitpick_simp_attrs),
+          [(caseN, case_thms, code_nitpick_simp_simp_attrs),
            (case_congN, [case_cong_thm], []),
            (case_convN, case_conv_thms, []),
            (collapseN, safe_collapse_thms, simp_attrs),
            (discN, nontriv_disc_thms, simp_attrs),
            (discIN, nontriv_discI_thms, []),

            (distinctN, distinct_thms, simp_attrs @ induct_simp_attrs),
            (exhaustN, [exhaust_thm], [exhaust_case_names_attr, cases_type_attr]),
            (expandN, expand_thms, []),
            (injectN, inject_thms, iff_attrs @ induct_simp_attrs),
            (nchotomyN, [nchotomy_thm], []),
-           (selN, all_sel_thms, code_nitpick_simp_attrs),
+           (selN, all_sel_thms, code_nitpick_simp_simp_attrs),
            (splitN, [split_thm], []),
            (split_asmN, [split_asm_thm], []),
            (splitsN, [split_thm, split_asm_thm], []),
            (weak_case_cong_thmsN, [weak_case_cong_thm], cong_attrs)]
           |> filter_out (null o #2)