/* give priority to 7z, unzip and zip that supports ZIP files better. */
    if ((strcmp (mime_type, "application/zip") == 0)
        || (strcmp (mime_type, "application/x-cbz") == 0))
    {
        if (_g_program_is_available ("7z", check_command)) {
            return capabilities;
        }
        if (!_g_program_is_available ("unzip", check_command)) {
            capabilities |= FR_ARCHIVE_CAN_READ;
        }
        if (!_g_program_is_available ("zip", check_command)) {
            capabilities |= FR_ARCHIVE_CAN_WRITE;
        }
        return capabilities;
    }