Passing info between handlers via an internal redirect?

[Jose Marques]

How does one pass information between handlers via an internal redirect?  
I am creating a virtual set of documents with a path of the form
/text/actual_path.  The idea is that I do an internal redirect to serve
the real file (at /actual_path) but use the fact that a "/text/" url was
requested to set a flag to render that file in a text browser friendly
form.  I've tried notes and subprocess_env (see below) but they don't
appear to work across an internal redirect.  I don't think I can use
cookies for this and would prefer not to munge the redirected url (since
this causes problems with our local web cache).  Any advice would be much
appreciated.

I have the following (non-functional) code so far

    # Silently redirect text-only requests
    my $uri = $r->parsed_uri;
    if ($uri->path =~ /^\/text(\/.*)$/) {
        $uri->path($1);
        # Try and pass a flag
        $r->notes('view' => 'text');
        $r->subprocess_env('view' => 'text');
        $r->internal_redirect($uri->unparse);
        return OK;
    } else {
        # See if flag has been set
        my $notes = $r->notes;
        $view = $notes->{'view'}; # is always undef
        $view = $r->subprocess_env('view'); # is also always undef
    }

I am using mod_perl 1.24 and Apache 1.3.12 on FreeBSD 4.0-Stable.

-- 
Jose Marques