Re: command remapping problem

[Richard M. Stallman]

    >                                                    In that case, we have
    >     lost functionality in going to Emacs 22, because
    >     `substitute-key-definition' is unusable (at least with
    >     `self-insert-command'), for performance reasons.

Regardless of the advantages of command-remapping,
it is still a bug that this operation has become slow
to the point of unusability.

Could someone please investigate the slowness, and respond
with an explanation of the cause?