--- a/src/HOL/Mirabelle/ex/Ex.thy Sun Sep 23 19:59:53 2018 +0200
+++ b/src/HOL/Mirabelle/ex/Ex.thy Sun Sep 23 20:33:35 2018 +0200
@@ -3,7 +3,7 @@
ML \<open>
val rc = Isabelle_System.bash
- "cd \"$ISABELLE_HOME/src/HOL/Analysis\"; isabelle mirabelle arith Inner_Product.thy";
+ "cd \"$ISABELLE_HOME/src/HOL/Analysis\"; if isabelle build -n \"$MIRABELLE_LOGIC\"; then isabelle mirabelle arith Inner_Product.thy; fi";
if rc <> 0 then error ("Mirabelle example failed: " ^ string_of_int rc)
else ();
\<close> \<comment> \<open>some arbitrary small test case\<close>