+ my $h = [ 'Content-Type', 'text/html; charset=UTF-8',
+ 'Content-Length', undef ];
+ my $gzf = gzf_maybe($h, $env) || PublicInbox::NoopFilter::new();
+ my $out = $gzf->zmore('<html><head><title>' .
+ 'public-inbox listing</title>' .
+ '</head><body><pre>');