Comment 114 for bug 221112

I don't know what your fix is, but it seems to work, here is my output:

// pressing left Ctrl

KeyPress event, serial 36, synthetic NO, window 0x4400001,
    root 0x1a7, subw 0x0, time 4885397, (45,174), root:(1474,224),
    state 0x10, keycode 37 (keysym 0xffe3, Control_L), same_screen YES,
    XLookupString gives 0 bytes:
    XmbLookupString gives 0 bytes:
    XFilterEvent returns: False

// pressing space

KeyPress event, serial 36, synthetic NO, window 0x4400001,
    root 0x1a7, subw 0x0, time 4885613, (45,174), root:(1474,224),
    state 0x14, keycode 65 (keysym 0x20, space), same_screen YES,
    XLookupString gives 1 bytes: (00) ""
    XmbLookupString gives 1 bytes: (00) ""
    XFilterEvent returns: False

// releasing space

KeyRelease event, serial 36, synthetic NO, window 0x4400001,
    root 0x1a7, subw 0x0, time 4885732, (45,174), root:(1474,224),
    state 0x14, keycode 65 (keysym 0x20, space), same_screen YES,
    XLookupString gives 1 bytes: (00) ""
    XFilterEvent returns: False

// releasing control

KeyRelease event, serial 36, synthetic NO, window 0x4400001,
    root 0x1a7, subw 0x0, time 4885877, (45,174), root:(1474,224),
    state 0x14, keycode 37 (keysym 0xffe3, Control_L), same_screen YES,
    XLookupString gives 0 bytes:
    XFilterEvent returns: False

------------------ pressing only space : ------------------

KeyPress event, serial 36, synthetic NO, window 0x4400001,
    root 0x1a7, subw 0x0, time 4886421, (45,174), root:(1474,224),
    state 0x10, keycode 65 (keysym 0x20, space), same_screen YES,
    XLookupString gives 1 bytes: (20) " "
    XmbLookupString gives 1 bytes: (20) " "
    XFilterEvent returns: False

KeyRelease event, serial 36, synthetic NO, window 0x4400001,
    root 0x1a7, subw 0x0, time 4886517, (45,174), root:(1474,224),
    state 0x10, keycode 65 (keysym 0x20, space), same_screen YES,
    XLookupString gives 1 bytes: (20) " "
    XFilterEvent returns: False