# HG changeset patch
# User wenzelm
# Date 1385149017 -3600
# Node ID 39d91cac6e9176adcec8e5a7783a4868e01f8d6e
# Parent  31844ca390ada9e32b2372f2fa85099f3173d9df
tuned messages;

diff -r 31844ca390ad -r 39d91cac6e91 src/Pure/System/session.scala
--- a/src/Pure/System/session.scala	Fri Nov 22 20:28:49 2013 +0100
+++ b/src/Pure/System/session.scala	Fri Nov 22 20:36:57 2013 +0100
@@ -240,7 +240,7 @@
   {
     val header1 =
       if (thy_load.loaded_theories(name.theory))
-        header.error("Attempt to update loaded theory " + quote(name.theory))
+        header.error("Cannot update finished theory " + quote(name.theory))
       else header
     (name, Document.Node.Deps(header1))
   }
diff -r 31844ca390ad -r 39d91cac6e91 src/Pure/Thy/thy_info.ML
--- a/src/Pure/Thy/thy_info.ML	Fri Nov 22 20:28:49 2013 +0100
+++ b/src/Pure/Thy/thy_info.ML	Fri Nov 22 20:36:57 2013 +0100
@@ -140,7 +140,7 @@
 (* main loader actions *)
 
 fun remove_thy name = NAMED_CRITICAL "Thy_Info" (fn () =>
-  if is_finished name then error (loader_msg "attempt to change finished theory" [name])
+  if is_finished name then error (loader_msg "cannot update finished theory" [name])
   else
     let
       val succs = thy_graph String_Graph.all_succs [name];