HelenOS sources
KC_SPACE 141 uspace/app/bdsh/cmds/modules/cat/cat.c if (kev->key == KC_ENTER || kev->key == KC_SPACE ||
KC_SPACE 92 uspace/drv/hid/adb-kbd/ctl.c [0x31] = KC_SPACE,
KC_SPACE 123 uspace/drv/hid/atkbd/atkbd.c [0x29] = KC_SPACE,
KC_SPACE 89 uspace/drv/hid/usbhid/kbd/conv.c [0x2c] = KC_SPACE,
KC_SPACE 115 uspace/drv/hid/xtkbd/xtkbd.c [0x39] = KC_SPACE,
KC_SPACE 1412 uspace/lib/vt/src/vt100.c vt100_key(vt, 0, KC_SPACE, c);
KC_SPACE 196 uspace/srv/hid/input/ctl/stty.c 0, KC_SPACE, 0x20, GSP_END,
KC_SPACE 219 uspace/srv/hid/input/ctl/sun.c [0x79] = KC_SPACE,
KC_SPACE 174 uspace/srv/hid/input/layout/ar.c [KC_SPACE] = ' ',
KC_SPACE 203 uspace/srv/hid/input/layout/cz.c [KC_SPACE] = ' ',
KC_SPACE 182 uspace/srv/hid/input/layout/fr_azerty.c [KC_SPACE] = ' ',
KC_SPACE 183 uspace/srv/hid/input/layout/us_dvorak.c [KC_SPACE] = ' ',
KC_SPACE 177 uspace/srv/hid/input/layout/us_qwerty.c [KC_SPACE] = ' ',
HelenOS homepage, sources at GitHub