KG_ALT
if (shift_state & BIT(KG_ALT))
#define VC_ALTLOCK KG_ALT /* alt lock mode */
#define K_ALT K(KT_SHIFT,KG_ALT)
#define K_ALTLOCK K(KT_LOCK,KG_ALT)
#define K_ALT_SLOCK K(KT_SLOCK,KG_ALT)