qmk_firmware/keyboards/ergodox_ez/keymaps/bocaj/config.h

#ifndef USERSPACE_CONFIG_H
  #define USERSPACE_CONFIG_H

  #ifndef QMK_KEYS_PER_SCAN
    #define QMK_KEYS_PER_SCAN 4
  #endif // QMK KEYS PER SCAN

  // this makes it possible to do rolling combos (zx) with keys that
  // convert to other keys on hold (z becomes ctrl when you hold it,
  // and when this option isn't enabled, z rapidly followed by x
  // actually sends Ctrl-x. That's bad.)
  #define IGNORE_MOD_TAP_INTERRUPT
  #define PERMISSIVE_HOLD
  #undef PREVENT_STUCK_MODIFIERS

  // Disable action_get_macro and fn_actions, since we don't use these
  // and it saves on space in the firmware.
  #define NO_ACTION_MACRO
  #define NO_ACTION_FUNCTION

#endif // !USERSPACE_CONFIG_H