add EnableVirtualSpace setting to options dialog

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/Options/BehaviorOptions.xaml

@@ -36,6 +36,9 @@
 				<CheckBox
 					IsChecked="{core:OptionBinding local:CodeEditorOptions.CutCopyWholeLine}"
 					Content="{core:Localize Dialog.Options.IDEOptions.TextEditor.Behaviour.CutCopyWholeLine}" />
+				<CheckBox
+					IsChecked="{core:OptionBinding local:CodeEditorOptions.EnableVirtualSpace}"
+					Content="{core:Localize Dialog.Options.IDEOptions.TextEditor.Behaviour.EnableVirtualSpace}" />
 				<CheckBox
 					IsChecked="{core:OptionBinding local:CodeEditorOptions.CtrlClickGoToDefinition}"
 					Content="{core:Localize Dialog.Options.IDEOptions.TextEditor.Behaviour.CtrlClickGotoDefinition}" />

src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/TextEditorOptions.cs

@@ -342,7 +342,7 @@ namespace ICSharpCode.AvalonEdit
 			set {
 				if (enableRectangularSelection != value) {
 					enableRectangularSelection = value;
-					OnPropertyChanged("AllowRectangularSelection");
+					OnPropertyChanged("EnableRectangularSelection");
 				}
 			}
 		}
@@ -358,7 +358,7 @@ namespace ICSharpCode.AvalonEdit
 			set {
 				if (enableTextDragDrop != value) {
 					enableTextDragDrop = value;
-					OnPropertyChanged("EnableTextDrag");
+					OnPropertyChanged("EnableTextDragDrop");
 				}
 			}
 		}