Returning to original target after NoPassive "error"

[Christopher Bongaarts]

When using isPassive, if you use a SessionInitiator with a target URL 
(e.g. /Shibboleth.sso/Login?target=...) it works if the login succeeds 
(i.e. the user has already authenticated and SSO kicks in).  If it 
fails, the redirectErrors URL is invoked, but I didn't see the target 
URL show up anywhere.

Is there a way to recover that target URL from the redirectErrors 
handler so the handler can in effect say:

if error = NoPassive
then
   redirect to <target>
else
   display error

-- 
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