bug#67070: 29.1; broken keybindings with emacs 29

[Eli Zaretskii <eliz@gnu.org>]

> From: Enrico Scholz <enrico.scholz@ensc.de>
> Date: Sat, 11 Nov 2023 11:32:26 +0100
> 
> Emacs 29 seems to inject always a 'super' key event after 'meta'.
> E.g. when I try to press 'M-x', emacs reports
> 
> | M-s-x is undefined
> 
> Ditto with any other key combination which involves 'meta'.
> 
> Things work as expected with emacs 28.3 and before.
> 
> 
> My ~/.Xmodmap is
> 
> ---
> keycode 12  = 3 numbersign section
> keycode 20  = minus underscore ssharp
> keycode 26  = e E EuroSign
> keycode 54  = c C cent
> keycode 34  = bracketleft braceleft udiaeresis
> keycode 47  = semicolon   colon     odiaeresis
> keycode 48  = apostrophe  quotedbl  adiaeresis
> keycode 28  = t T XF86Time
> 
> keycode 66  = Control_L
> 
> !keycode 37  = Mode_switch Caps_Lock
> keycode 37  = Mode_switch
> keycode 133  = Alt_L
> keycode 64 = Meta_L
> 
> !keycode 108 = Mode_switch
> keycode 108 = Meta_R Meta_R
> keycode 134 = Meta_R
> keycode 135 = Alt_R
> 
> clear Mod1
> clear Mod4
> clear Lock
> clear control
> add Lock = Caps_Lock
> add control = Control_L Control_R
> add Mod1 = Alt_L Alt_R
> add Mod4 = Meta_L Meta_R
> 
> keycode 67 = F1 F1
> keycode 68 = F2 F2
> keycode 69 = F3 F3
> keycode 70 = F4 F4
> keycode 71 = F5 F5
> keycode 72 = F6 F6
> keycode 73 = F7 F7
> keycode 74 = F8 F8
> keycode 75 = F9 F9
> !keycode 76 = F10 F10
> keycode 95 = F11 F11
> keycode 96 = F12 F12
> ---

Thanks.

Po Lu, any comments or suggestions?