Bug 78317 Compare plug-in gets loaded by LocalHistoryActionGroup
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/compare/JavaCompareWithEditionAction.java
private static final String BUNDLE_NAME= "org.eclipse.jdt.internal.ui.compare.CompareWithEditionAction"; 
	
	
	public JavaCompareWithEditionAction() {
		super(false);
	}	
	
	public void run(ISelection selection) {
		
		String errorTitle= CompareMessages.getString("CompareWithHistory.title"); 
		String errorMessage= CompareMessages.getString("CompareWithHistory.internalErrorMessage"); 
				
		IMember input= getEditionElement(selection);
		if (input == null) {
			String invalidSelectionMessage= CompareMessages.getString("CompareWithHistory.invalidSelectionMessage"); 
			MessageDialog.openInformation(getShell(), errorTitle, invalidSelectionMessage);
			return;
		}
		
		IFile file= getFile(input);
		if (file == null) {
			MessageDialog.openError(getShell(), errorTitle, errorMessage);