Re: [mp2] ModPerl::PerlRun changes behaviour of header(), breaking some CGI scripts

[Dondi M. Stroma]

This sounds like a CGI.pm issue.  PerlRun doesn't alter the behavior
of CGI::header.  You should report this on the RT bug tracker for
CGI.pm.
- Perrin

That's exactly what it is. I ran into this problem about a year ago (I was 
saving the header to a variable for printing later) and it took me awhile to 
figure out why it stopped working when I started using it under mod_perl as 
a Registry script.  Here's part of the CGI.pm code for header():

   if ($MOD_PERL and not $nph) {
       $self->r->send_cgi_header($header);
       return '';
   }