Actipro crash during multi-line select and enter

Hi,

I'm facing a crash issue, if I select multi-line and press enter key.

The steps to reproduce the problem

1. Open the Actipro SampleApplication and 12-Indent Provider

The editor has the following context (Make sure the last line is an empty line.)

/*
In this sample we've built an indent provider service for the language that will auto-indent
when the end user presses Enter. It will indent a tab stop level if pressing Enter after
a '{' character.

If the caret is immediately in between a curly brace pair when pressing Enter, the close
curly brace will be moved to the line after the caret.

The indent provider also watches text changes and will auto-outdent a '}' character when typed.
*/

function Add(x, y) {
return x + y;

// Type a '}' character on the next line to see how the character is outdented

}

function Increment(x) {
return (x + 1);
}

function IncrementAndMultiply(x, y) {
// This function calls another function
var result;
result = Increment(x);
return result * y;
}

2. Select portion of function Increment(x) as following. (Make sure the selected lastline ( } ) is fully selected)

Increment(x) {
	return (x + 1);
}

3. Press entry key in the keyboard

4. Application crash with the Exception "ArgumentOutofRangeException".
StackTrace: 
at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)
at #BZc.#EZc.#sxj(Int32 #4Te, Int32 #0Te, Int32 #1Te, Boolean #txj, Nullable'1 #uxj)
at #BZc.#EZc.#B6c(Object #xhb, TextSnapshotChangedEventArgs #yhb)
at System.EventHandler'1.Invoke(Object sender, TEventArgs e)
at ActiproSoftware.Text.Implementation.TextDocumentBase.OnTextChanged(TextSnapshotChangedEventArgs e)
at ActiproSoftware.Text.Implementation.TextDocumentBase.#O7c(#g7b #g7b)
at ActiproSoftware.Windows.Controls.SyntaxEditor.Primitives.EditorView.BasicReplaceSelectedText(ITextChangeType type, String text, IEditorViewTextChangeOptions options)
at ActiproSoftware.Windows.Controls.SyntaxEditor.Primitives.EditorView.ExecuteEditAction(IEditAction action)
at ActiproSoftware.Windows.Controls.SyntaxEditor.Implementation.EditActionBase.#Bfc(Object #xhb, ExecutedRoutedEventArgs #yhb)
at System.Windows.Input.CommandBinding.OnExecuted(Object sender, ExecutedRoutedEventArgs e)
at System.Windows.Input.CommandManager.ExecuteCommandBinding(Object sender, ExecutedRoutedEventArgs e, CommandBinding commandBinding)
at System.Windows.Input.CommandManager.FindCommandBinding(CommandBindingCollection commandBindings, Object sender, RoutedEventArgs e, ICommand command, Boolean execute)
at System.Windows.Input.CommandManager.FindCommandBinding(Object sender, RoutedEventArgs e, ICommand command, Boolean execute)
at System.Windows.Input.CommandManager.OnExecuted(Object sender, ExecutedRoutedEventArgs e)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
at System.Windows.Input.RoutedCommand.ExecuteImpl(Object parameter, IInputElement target, Boolean userInitiated)
at System.Windows.Input.CommandManager.TranslateInput(IInputElement targetElement, InputEventArgs inputEventArgs)
at System.Windows.UIElement.OnKeyDownThunk(Object sender, KeyEventArgs e)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
at System.Windows.Interop.HwndKeyboardInputProvider.ProcessKeyAction(MSG& msg, Boolean& handled)
at System.Windows.Interop.HwndSource.CriticalTranslateAccelerator(MSG& msg, ModifierKeys modifiers)
at System.Windows.Interop.HwndSource.OnPreprocessMessage(Object param)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg)
at System.Windows.Interop.HwndSource.OnPreprocessMessageThunk(MSG& msg, Boolean& handled)
at System.Windows.Interop.ThreadMessageEventHandler.Invoke(MSG& msg, Boolean& handled)
at System.Windows.Interop.ComponentDispatcherThread.RaiseThreadMessage(MSG& msg)
at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
at System.Windows.Application.RunDispatcher(Object ignore)
at System.Windows.Application.RunInternal(Window window)
at ActiproSoftware.SampleBrowser.WindowsApp.Main() in c:\Users\nbanukh\Documents\Actipro Software\WPF-Controls\v16.1.0633\SampleBrowser\obj\Debug\SampleBrowser\WindowsApp.g.cs:line 0
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()


Message:

Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index