xev

♓
jean-christophe@atelier ~> xev -event keyboard
Outer window is 0x4800001, inner window is 0x4800002

KeymapNotify event, serial 24, synthetic NO, window 0x0,
    keys:  0   0   0   0   16  0   0   0   0   0   0   0   0   0   0   0
           0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

KeyRelease event, serial 25, synthetic NO, window 0x4800001,
    root 0x1e2, subw 0x0, time 6515153, (-1051,52), root:(2522,140),
    state 0x10, keycode 36 (keysym 0xff0d, Return), same_screen YES,
"   XLookupString gives 1 bytes: (0d) "
    XFilterEvent returns: False

KeymapNotify event, serial 26, synthetic NO, window 0x0,
    keys:  226 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
           0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

KeymapNotify event, serial 26, synthetic NO, window 0x0,
    keys:  226 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
           0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

KeyPress event, serial 28, synthetic NO, window 0x4800001,
    root 0x1e2, subw 0x4800002, time 6523705, (52,46), root:(2457,404),
    state 0x10, keycode 108 (keysym 0xfe03, ISO_Level3_Shift), same_screen YES,
    XKeysymToKeycode returns keycode: 92
    XLookupString gives 0 bytes:
    XmbLookupString gives 0 bytes:
    XFilterEvent returns: False

KeyPress event, serial 28, synthetic NO, window 0x4800001,
    root 0x1e2, subw 0x4800002, time 6524049, (52,46), root:(2457,404),
    state 0x90, keycode 44 (keysym 0x100fdd5, UFDD5), same_screen YES,
    XLookupString gives 3 bytes: (ef b7 95) "﷕"
    XmbLookupString gives 3 bytes: (ef b7 95) "﷕"
    XFilterEvent returns: True

KeyRelease event, serial 28, synthetic NO, window 0x4800001,
    root 0x1e2, subw 0x4800002, time 6524201, (52,46), root:(2457,404),
    state 0x90, keycode 44 (keysym 0x100fdd5, UFDD5), same_screen YES,
    XLookupString gives 3 bytes: (ef b7 95) "﷕"
    XFilterEvent returns: False

KeyRelease event, serial 28, synthetic NO, window 0x4800001,
    root 0x1e2, subw 0x4800002, time 6524337, (52,46), root:(2457,404),
    state 0x90, keycode 108 (keysym 0xfe03, ISO_Level3_Shift), same_screen YES,
    XKeysymToKeycode returns keycode: 92
    XLookupString gives 0 bytes:
    XFilterEvent returns: False

KeyPress event, serial 28, synthetic NO, window 0x4800001,
    root 0x1e2, subw 0x4800002, time 6524809, (52,46), root:(2457,404),
    state 0x10, keycode 41 (keysym 0x65, e), same_screen YES,
    XLookupString gives 1 bytes: (65) "e"
    XmbLookupString gives 1 bytes: (65) "e"
    XFilterEvent returns: True

KeyPress event, serial 28, synthetic NO, window 0x4800001,
    root 0x1e2, subw 0x4800002, time 6524809, (52,46), root:(2457,404),
    state 0x10, keycode 0 (keysym 0x1001d49, U1D49), same_screen YES,
    XLookupString gives 0 bytes:
    XmbLookupString gives 3 bytes: (e1 b5 89) "ᵉ"
    XFilterEvent returns: False

KeyRelease event, serial 28, synthetic NO, window 0x4800001,
    root 0x1e2, subw 0x4800002, time 6524929, (52,46), root:(2457,404),
    state 0x10, keycode 41 (keysym 0x65, e), same_screen YES,
    XLookupString gives 1 bytes: (65) "e"
    XFilterEvent returns: False

KeymapNotify event, serial 28, synthetic NO, window 0x0,
    keys:  226 0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
           0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0