Refresh bug in test 4

[Vinnie Shelton <shelton@xxxxxxxxxxxxxxxx>]

I've come across a bug in the refresh code for test4.

zsh -f
spacely% echo $ZSH_VERSION
3.0.1-test4
spacely% PS1="%B: %2c %w %T%(#.#.); %b"
: ~ Mon 21 14:44; ls -l SpecJava-0.3bin/

... output deleted...

Now type ^R-l

You end up with the following:

: ~ Mon 21 14:45; ls ls SpecJava-0.3bin/
bck-i-search: -l_


(This is on Solaris 2.5, in case that matters.)
It looks to me like the highlighting characters in the prompt are
confusing the display code.  I couldn't reproduce this without
fiddling with PS1.

--vin