Dear collected list wisdom, I think I'm hitting a wall here: my module's filter needs to replace the running request with the configured error page for that error (all in the 4xx range). The error is detected before any content is pushed down the bucket line. Setting the request's status will produce the correct HTTP status line but (of course?) it won't send the error document as configured in the server's configuration. Any ideas?
TIA Ralf Mattes