[rz/sz causes stair-casing of text when invoked from a newer tip]
> That older version of rz/sz doesn't do termios, I'm sure.  Since the old 
> tip didn't, either, it wasn't a problem.  If you have source, you should 
> find it and recompile, making sure that it uses POSIX termios for 
> handling tty's.

But the same rz/sz causes no problems when used with my old
tip binary under otherwise identical conditions!

> > I also see identical stair-casing with GNU smalltalk 1.1.1 with the
> > readline library too.
> 
> This is another case of the same.  For some reason, the readline 
> configure script doesn't properly tweak things so that termios is used.  
> I had fixed this, once, but promptly lost my changes and never got the 
> motivation to fix it again.

Right - it uses termio instead, which should still work.
Maybe this is related to this message:

    From: Jim Rees <rees@umich.edu>
    To: port-i386@NetBSD.ORG
    Date: Thu, 21 Mar 1996 16:33:50 -0500
    Subject: lost OPOST

    If I call ioctl(TIOCGETP) on a tty followed by a ioctl(TIOCSETP), the OPOST
    bit gets turned off.  I'm told there is a fix for this but I can't find it
    in the bugs database.  Can someone point me to it?

-- 
Brian de Alwis - Fourth Year CS student at the University of Waterloo
-- bsdealwis@uwaterloo.ca, bl489@torfree.net, bdealwis@sunsite.unc.edu --
      "Maybe this world is another planet's Hell." - Aldous Huxley