HelenOS sources
KC_NMINUS 121 uspace/drv/hid/adb-kbd/ctl.c [0x4e] = KC_NMINUS,
KC_NMINUS 148 uspace/drv/hid/atkbd/atkbd.c [0x7b] = KC_NMINUS,
KC_NMINUS 136 uspace/drv/hid/usbhid/kbd/conv.c [0x56] = KC_NMINUS,
KC_NMINUS 141 uspace/drv/hid/xtkbd/xtkbd.c [0x4a] = KC_NMINUS,
KC_NMINUS 169 uspace/srv/hid/input/ctl/sun.c [0x47] = KC_NMINUS,
KC_NMINUS 178 uspace/srv/hid/input/layout/ar.c [KC_NMINUS] = '-',
KC_NMINUS 207 uspace/srv/hid/input/layout/cz.c [KC_NMINUS] = '-',
KC_NMINUS 186 uspace/srv/hid/input/layout/fr_azerty.c [KC_NMINUS] = '-',
KC_NMINUS 187 uspace/srv/hid/input/layout/us_dvorak.c [KC_NMINUS] = '-',
KC_NMINUS 181 uspace/srv/hid/input/layout/us_qwerty.c [KC_NMINUS] = '-',
HelenOS homepage, sources at GitHub