Bug 5877 Rename package -> selection incorrect
1. select text in a .java file 2. rename the package of that file using the rename menu option 3. notice that the selection has moved Perhaps because selection index isn't updated when the .java file text changes to reflect the new package.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitEditor.java
String message= JavaEditorMessages.getFormattedString("CompilationUnitEditor.warning.save.delete", new Object[] { original.getName() });
			dialog.setMessage(message, IMessageProvider.WARNING);
		}
			
		if (dialog.open() == Dialog.CANCEL) {
			if (progressMonitor != null)
				progressMonitor.setCanceled(true);
			return;
		}
			
		IPath filePath= dialog.getResult();
		if (filePath == null) {
			if (progressMonitor != null)
				progressMonitor.setCanceled(true);
			return;
		}
			
		IWorkspace workspace= ResourcesPlugin.getWorkspace();
		IFile file= workspace.getRoot().getFile(filePath);
		final IEditorInput newInput= new FileEditorInput(file);
		
		WorkspaceModifyOperation op= new WorkspaceModifyOperation() {
			public void execute(final IProgressMonitor monitor) throws CoreException {
				getDocumentProvider().saveDocument(monitor, newInput, getDocumentProvider().getDocument(getEditorInput()), true);
			}
		};
		
		boolean success= false;
		try {