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
* a boolean indicating success.  If <code>false</code> is returned then the
     * wizard will not close.
     */
    public boolean finish() {
        if (!super.finish())
            return false;
        clearProviderCache();
        return true;
    }
    /**
     *	Answer the root FileSystemElement that represents the contents of the
     *	currently-specified .zip file.  If this FileSystemElement is not
     *	currently defined then create and return it.
     */
    protected FileSystemElement getFileSystemTree() {
        if (getRoot() != null)
            return getRoot();
        ZipFile sourceFile = getSpecifiedSourceFile();
        if (sourceFile == null)
            return null;
        ZipFileStructureProvider provider = getStructureProvider(sourceFile);
        return selectFiles(provider.getRoot(), provider);
    }
    /**
     *	Answer the string to display as the label for the source specification field
     */
    protected String getSourceLabel() {
        return DataTransferMessages.getString("ZipExport.destinationLabel"); 
    }
    /**