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