[no subject]

[Kent M. Pitman <KMP at MIT-MC>]

I don't see why (Y-OR-N-P ...) must have a bidirectional stream. Why can't
you have it pick the ttycons of the given file object to do the operations
which would otherwise be the wrong direction. i.e., I think that
(Y-OR-N-P TYI) and (Y-OR-N-P TYO) are perfectly well-defined. I hate using
T as a file object and I think having to define an SFA that just pretends to
be TYI/TYO (yes, I know there are some already written but it's still a silly
overhead) is unreasonable.