Bug 97523 [Import/Export] Get overwrite prompt before no resources selected prompt
3.1 RC1 - File > Export > Archive - clear any selected resources - enter an archive file name where the file already exists - Finish - it prompts to overwrite the file; choose Yes - it says "There are no resources currently selected for export" (OK) Should get the "no resources" prompt first, and not bother with the second one. Should check the other export wizards too.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardArchiveFileResourceExportPage1.java
if (resourcesToExport.size() > 0) {
            return executeExportOperation(new ArchiveFileExportOperation(null,
                    resourcesToExport, getDestinationValue()));
        }
        MessageDialog.openInformation(getContainer().getShell(),
                DataTransferMessages.DataTransfer_information,
                DataTransferMessages.FileExport_noneSelected);
        return false;
    }
    /**
     *	Answer the string to display in the receiver as the destination type
     */
    protected String getDestinationLabel() {
        return DataTransferMessages.ArchiveExport_destinationLabel;
    }
    /**
     *	Answer the contents of self's destination specification widget.  If this
     *	value does not have a suffix then add it first.
     */
    protected String getDestinationValue() {
        String idealSuffix = getOutputSuffix();
        String destinationText = super.getDestinationValue();
         
          
         
        
        if (destinationText.length() != 0
                && !destinationText.endsWith(File.separator)) {
            int dotIndex = destinationText.lastIndexOf('.');
            if (dotIndex != -1) {