Strange command-line redraw on 3.1.1

Strange command-line redraw on 3.1.1

[Adam R. Paul]

Hello,

	I'm seeing the following odd redrawing occurring in zsh 3.1.1 on SCO
OpenServer 5.0.4 (using vi keybindings):

if I enter:

13:11 ~
!87 $?=0 % for i in hrm ; do ; echo $i ; done                    adamp@gargoyle

then type:

<esc>kIecho 'ack!';<return>

I see on my screen:

13:13 ~
!88 $?=0 % echo 'ack!for i in hrm ; do ; echo $i ; done          adamp@gargoyle
13:13 ~
!88 $?=0 % echo 'ack!'for i in hrm ; do ; echo $i ; done
13:13 ~
!88 $?=0 % echo 'ack!';for i in hrm ; do ; echo $i ; done
13:13 ~
!88 $?=0 % echo 'ack!';
ack!
hrm

All but the output of the command I see _while_ typing, ie, as soon as I type
the closing ' it redraws, again when i type ; etc.

Any ideas?

Thanks,
	_Adam

-----
Adam R. Paul   !  SCO Engineering
adamp@sco.com  !  from std import disclaimer