8-bit is not latin-1
(Xemacs keyboard events corresponding to) X keysym codes 0x80 .. 0xff
should not be interpreted as latin-1 characters by
`self-insert-command'.
In particular, `ascii-character' property of `agrave' and like should
not be set while handling MappingNotify x event. Instead, some other
interpretation (according to some other 8-bit coding) is desired.
Is there a way to specify that to xemacs with mule?