side_controls_unit vs. tk interface

[Jim Kingdon]

> But that shouldn't be a problem, because all the modal handlers
> already have in_play and side_controls_unit tests already, and your
> change affects only command invocation.

Nyet.  See aux_build_2, aux_fire_at, aux_give_unit, and aux_move_to.
Unless I'm missing something obvious, of course, which is possible.

> If you're too annoyed to make this additional change, just say so and
> I'll take care of it.

It might be better for all involved at this point :-).  Assuming you
are willing and get around to it....