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Feature request - add Save SubTree option to the node popup menu.

See original GitHub issue

Suppose I want to analyze a subtree. I sometime copy it and paste in Notepad++, because I could then leverage search in Notepad++, which is more powerful than the built-in search.

However, this does not work well for very large subtrees:

Unexpected exception. Sorry about that.

Please Ctrl+C to copy this text and file an issue at https://github.com/KirillOsenkov/MSBuildStructuredLog/issues/new

System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
   at System.Text.StringBuilder.ToString()
   at ICSharpCode.AvalonEdit.Highlighting.HtmlClipboard.CreateHtmlFragment(IDocument document, IHighlighter highlighter, ISegment segment, HtmlOptions options)
   at ICSharpCode.AvalonEdit.Editing.Selection.CreateHtmlFragment(HtmlOptions options)
   at ICSharpCode.AvalonEdit.Editing.Selection.CreateDataObject(TextArea textArea)
   at ICSharpCode.AvalonEdit.Editing.EditingCommandHandler.CopySelectedText(TextArea textArea)
   at ICSharpCode.AvalonEdit.Editing.EditingCommandHandler.OnCopy(Object target, ExecutedRoutedEventArgs args)
   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.Input.RoutedCommand.ExecuteImpl(Object parameter, IInputElement target, Boolean userInitiated)
   at StructuredLogViewer.Controls.TextViewerControl.copyMenu_Click(Object sender, RoutedEventArgs e) in C:\MSBuildStructuredLog\src\StructuredLogViewer\Controls\TextViewerControl.xaml.cs:line 264
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.Controls.MenuItem.InvokeClickAfterRender(Object arg)
   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)

Having this option solves the problem.