Bug 33897 [Import/Export] Export to .tar.gz or .tar.bz2
Right click a Java project. Choose "Export...". A window opens where you can choose between different export targets. There is no ".tar.gz" target or ".tar.bz2". I would like to have either one (or both). If I must choose one, I prefer ".tar.bz2", but I don't really have a strong opinion about it; ".tar.gz" would be fine as well. The reason I somewhat prefer bzip2 is that bzip2 makes files noticably smaller than gzip, and my impression is that gzip is slowly being outcompeted. A Linux-GTK implementation would be good enough for me, but it is possible that "Unix All" would be a better platform as other Unix users could probably be interested in this as well.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardZipFileImportPage1.java
private ZipFileStructureProvider providerCache;
    
    private static final String FILE_IMPORT_MASK = "*.jar;*.zip";
    
    private final static String STORE_SOURCE_NAMES_ID = "WizardZipFileImportPage1.STORE_SOURCE_NAMES_ID";
    private final static String STORE_IMPORT_ALL_RESOURCES_ID = "WizardZipFileImportPage1.STORE_IMPORT_ALL_ENTRIES_ID";
    private final static String STORE_OVERWRITE_EXISTING_RESOURCES_ID = "WizardZipFileImportPage1.STORE_OVERWRITE_EXISTING_RESOURCES_ID";
    private final static String STORE_SELECTED_TYPES_ID = "WizardZipFileImportPage1.STORE_SELECTED_TYPES_ID";
    /**
     *	Creates an instance of this class
     */
    public WizardZipFileImportPage1(IWorkbench aWorkbench,
            IStructuredSelection selection) {
        super("zipFileImportPage1", aWorkbench, selection);
        setTitle(DataTransferMessages.getString("ZipExport.exportTitle")); 
        setDescription(DataTransferMessages.getString("ZipImport.description")); 
    }
    /**
     * Called when the user presses the Cancel button. Return a boolean
     * indicating permission to close the wizard.
     */
    public boolean cancel() {
        clearProviderCache();
        return true;
    }
    /**
     * Clears the cached structure provider after first finalizing
     * it properly.
     */
    protected void clearProviderCache() {