--- a/src/HOL/Main.thy Mon Dec 28 19:23:15 2015 +0100
+++ b/src/HOL/Main.thy Mon Dec 28 21:47:32 2015 +0100
@@ -35,7 +35,7 @@
hide_fact (open) id_bnf_def type_definition_id_bnf_UNIV
-no_syntax (xsymbols)
+no_syntax
"_INF1" :: "pttrns \<Rightarrow> 'b \<Rightarrow> 'b" ("(3\<Sqinter>_./ _)" [0, 10] 10)
"_INF" :: "pttrn \<Rightarrow> 'a set \<Rightarrow> 'b \<Rightarrow> 'b" ("(3\<Sqinter>_\<in>_./ _)" [0, 0, 10] 10)
"_SUP1" :: "pttrns \<Rightarrow> 'b \<Rightarrow> 'b" ("(3\<Squnion>_./ _)" [0, 10] 10)