redirect.internal with parameters?

I have this spyce page (pageA) which in some situations wants to
display a different spyce page (pageB).  In particular, if the user
requests pageA and isn't logged in (which can be figured out by
looking at a cookie), I want to display pageB, which has the whole
"login or register as a new user" rigamarole.

In the process of figuring out that the user needs to log in, pageA
will have collected certain data -- say a string called message, which
might contain something like "Your username and password do not match"
or "Your cookie has expired and you've been logged out... for your own
good!" or something.

So it seems like I have two options:

  redirect.internal('pageB')
  # no way to pass message, but pageB's parent template is respected

  include.spyce('pageB', context=message)
  raise spyceDone
  # passed message, but pageB's parent template is not respected

Is  this some option that allows me to pass in message and also have
pageB's parent template executed?


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