--- a/src/Pure/PIDE/document.scala Tue Jul 22 22:18:50 2014 +0200
+++ b/src/Pure/PIDE/document.scala Wed Jul 23 10:02:19 2014 +0200
@@ -167,9 +167,16 @@
case class Edits[A, B](edits: List[A]) extends Edit[A, B]
case class Deps[A, B](header: Header) extends Edit[A, B]
case class Perspective[A, B](required: Boolean, visible: B, overlays: Overlays) extends Edit[A, B]
+
+
+ /* perspective */
+
type Perspective_Text = Perspective[Text.Edit, Text.Perspective]
type Perspective_Command = Perspective[Command.Edit, Command.Perspective]
+ val empty_perspective_text: Perspective_Text =
+ Perspective(false, Text.Perspective.empty, Overlays.empty)
+
/* commands */