Unicode hex entry

[Séamas Ó Brógáin]

Detlef Lechner wrote:
> May be you could type
> xev Ctrl+Shift+U and report here if a small underlined letter u appears.
> And if you continue keying in '0012' if 'Caret-R' appears.

No, what I get is:

KeyPress event, serial 30, synthetic NO, window 0x2000001,
root 0x11c, subw 0x0, time 74331, (645,887), root:(708,953),
state 0x0, keycode 50 (keysym 0xffe1, Shift_L), same_screen YES,
XLookupString gives 0 bytes:
XmbLookupString gives 0 bytes:
XFilterEvent returns: False

KeyPress event, serial 33, synthetic NO, window 0x2000001,
root 0x11c, subw 0x0, time 74333, (645,887), root:(708,953),
state 0x1, keycode 37 (keysym 0xffe3, Control_L), same_screen YES,
XLookupString gives 0 bytes:
XmbLookupString gives 0 bytes:
XFilterEvent returns: False

KeyPress event, serial 33, synthetic NO, window 0x2000001,
root 0x11c, subw 0x0, time 78206, (645,887), root:(708,953),
state 0x5, keycode 30 (keysym 0x55, U), same_screen YES,
XLookupString gives 1 bytes: (15) "#"
XmbLookupString gives 1 bytes: (15) "#"
XFilterEvent returns: False

KeyRelease event, serial 33, synthetic NO, window 0x2000001,
root 0x11c, subw 0x0, time 78256, (645,887), root:(708,953),
state 0x5, keycode 30 (keysym 0x55, U), same_screen YES,
XLookupString gives 1 bytes: (15) "#"
XFilterEvent returns: False

KeyRelease event, serial 33, synthetic NO, window 0x2000001,
root 0x11c, subw 0x0, time 100831, (645,887), root:(708,953),
state 0x5, keycode 50 (keysym 0xffe1, Shift_L), same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False

KeyRelease event, serial 33, synthetic NO, window 0x2000001,
root 0x11c, subw 0x0, time 100835, (645,887), root:(708,953),
state 0x4, keycode 37 (keysym 0xffe3, Control_L), same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False

... except that where a hash (#) appears above it is actually a box 
showing the hex character number 0015.