diff -r 54a3db2ed201 -r 903bb1495239 src/HOL/Library/Code_Prolog.thy
--- a/src/HOL/Library/Code_Prolog.thy	Wed Jun 17 10:57:11 2015 +0200
+++ b/src/HOL/Library/Code_Prolog.thy	Wed Jun 17 11:03:05 2015 +0200
@@ -2,7 +2,7 @@
     Author:     Lukas Bulwahn, TUM 2010
 *)
 
-section {* Code generation of prolog programs *}
+section \<open>Code generation of prolog programs\<close>
 
 theory Code_Prolog
 imports Main
@@ -11,10 +11,10 @@
 
 ML_file "~~/src/HOL/Tools/Predicate_Compile/code_prolog.ML"
 
-section {* Setup for Numerals *}
+section \<open>Setup for Numerals\<close>
 
-setup {* Predicate_Compile_Data.ignore_consts [@{const_name numeral}] *}
+setup \<open>Predicate_Compile_Data.ignore_consts [@{const_name numeral}]\<close>
 
-setup {* Predicate_Compile_Data.keep_functions [@{const_name numeral}] *}
+setup \<open>Predicate_Compile_Data.keep_functions [@{const_name numeral}]\<close>
 
 end