Bug 20040 java editor: undo does not work correctly
20020612 .create new class .'override methods...' - add clone() .undo .redo .undo the plain text editor does not exhibit this mis-behavior you're left with garbage like (pressing undo/redo more times produces even more garbage): public class Dfg { r.clone(); //<<GARBAGE } //<<GARBAGE }
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitEditor.java
private ITextSelection fRememberedSelection;
	
	private int fRememberedElementOffset;
	
	
	private GenerateActionGroup fGenerateActionGroup;
	private CompositeActionGroup fContextMenuGroup;
	
	/**
	 * Creates a new compilation unit editor.
	 */
	public CompilationUnitEditor() {
		super();
		setDocumentProvider(JavaPlugin.getDefault().getCompilationUnitDocumentProvider());
		setEditorContextMenuId("#CompilationUnitEditorContext"); 
		setRulerContextMenuId("#CompilationUnitRulerContext"); 
		setOutlinerContextMenuId("#CompilationUnitOutlinerContext"); 
		
		fSavePolicy= null;
			
		fJavaEditorErrorTickUpdater= new JavaEditorErrorTickUpdater(this);
	}
	
	/*
	 * @see AbstractTextEditor#createActions()
	 */
	protected void createActions() {
		
		super.createActions();
		Action action= new TextOperationAction(JavaEditorMessages.getResourceBundle(), "CorrectionAssistProposal.", this, JavaCorrectionSourceViewer.CORRECTIONASSIST_PROPOSALS);