text: /**
   * Marlin 3D Printer Firmware
   * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
   *
   * Based on Sprinter and grbl.
   * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
   *
   * This program is free software: you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program.  If not, see <https://www.gnu.org/licenses/>.
   *
   */
  
  #include "../../inc/MarlinConfig.h"
  
  #if BOTH(SDCARD_SORT_ALPHA, SDSORT_GCODE)
  
  #include "../gcode.h"
  #include "../../sd/cardreader.h"
  
  /**
   * M34: Set SD Card Sorting Options
   */
  void GcodeSuite::M34() {
    if (parser.seen('S')) card.setSortOn(parser.value_bool());
    if (parser.seenval('F')) {
      const int v = parser.value_long();
      card.setSortFolders(v < 0 ? -1 : v > 0 ? 1 : 0);
    }
    //if (parser.seen('R')) card.setSortReverse(parser.value_bool());
  }
  
  #endif // SDCARD_SORT_ALPHA && SDSORT_GCODE
  