--- a/src/HOL/MiniML/Maybe.ML Tue Dec 16 15:17:26 1997 +0100
+++ b/src/HOL/MiniML/Maybe.ML Tue Dec 16 17:58:03 1997 +0100
@@ -18,17 +18,17 @@
(* expansion of option_bind *)
goalw thy [option_bind_def] "P(option_bind res f) = \
\ ((res = None --> P None) & (!s. res = Some s --> P(f s)))";
-br split_option_case 1;
+by (rtac split_option_case 1);
qed "split_option_bind";
goal thy
"((option_bind m f) = None) = ((m=None) | (? p. m = Some p & f p = None))";
-by(simp_tac (simpset() addsplits [split_option_bind]) 1);
+by (simp_tac (simpset() addsplits [split_option_bind]) 1);
qed "option_bind_eq_None";
Addsimps [option_bind_eq_None];
(* auxiliary lemma *)
goal Maybe.thy "(y = Some x) = (Some x = y)";
-by( simp_tac (simpset() addsimps [eq_sym_conv]) 1);
+by ( simp_tac (simpset() addsimps [eq_sym_conv]) 1);
qed "rotate_Some";