bug#65068: 29.1; xkb-interception interaction causes problems with key combinations

[Po Lu]

Alexander Prähauser <alexander.praehauser@gmx.at> writes:

> It works! Thanks so much! Finally I can transition to the new Emacs
> version! Say, can you write a high-level summary about what you did so
> I can send it to the Stumpwm-people?

The remedy is disabling non-standard behavior imposed by the XFree86 XKB
library, through changing the ControlFallback X library control:

#ifdef XkbLC_ControlFallback
  XkbSetXlibControls (dpyinfo->display, XkbLC_ControlFallback, 0);
#endif /* XkbLC_ControlFallback */

Otherwise, XLookupString (and XmbLookupString) endeavor to locate an
ASCII character within a different group if ControlMask is set and the
standard means of keycode mapping produce a function key.  In your case,
the keycode array for AC11 still assigned ASCII characters to groups 2
through 4; consequently, group 2 would be consulted in lieu of the key
event's effective group.

I'm closing this bug as fixed; Eli, do you object to installing a
three-line fix incorporating only the code quoted in this e-mail on
emacs-29?