A working hack:
in /usr/share/X11/xkb/symbols/us
under:
change key <AB10> to:
This generates:
/? = Right Shift
Shift + /? = question mark
AltG + /? = slash
in /usr/share/X11/xkb/symbols/us
under:
Code:
name[Group1]= "English (US)";
change key <AB10> to:
Code:
key <AB10> {[ Shift_R, question, slash ]};
This generates:
/? = Right Shift
Shift + /? = question mark
AltG + /? = slash