--- a/src/Pure/Thy/sessions.scala Thu Apr 20 15:00:32 2017 +0200
+++ b/src/Pure/Thy/sessions.scala Thu Apr 20 17:34:31 2017 +0200
@@ -310,6 +310,7 @@
object Selection
{
val empty: Selection = Selection()
+ val all: Selection = Selection(all_sessions = true)
}
sealed case class Selection(