D:\>perl -MCGI -le"print CGI->new->Dump" a=b%00c d=e a= a=Q
<ul>
<li><strong>a</strong></li>
<ul>
<li>b c</li>
<li></li>
<li>Q</li>
</ul>
<li><strong>d</strong></li>
<ul>
<li>e</li>
</ul>
</ul>


D:\>perl -MCGI -le"print CGI->new->self_url" "a=b%00c&d=e&a=&a=Q"
http://localhost?a=b%00c;a=;a=Q;d=e

D:\>perl -MCGI -MData::Dumper -le"print Data::Dumper->new([ CGI->new ]
+)->Useqq(1)->Indent(1)->Dump" a=b%00c d=e a= a=Q
$VAR1 = bless( {
  ".parameters" => [
    "a",
    "d"
  ],
  "use_tempfile" => 1,
  ".charset" => "ISO-8859-1",
  ".fieldnames" => {},
  "param" => {
    "a" => [
      "b\0c",
      "",
      "Q"
    ],
    "d" => [
      "e"
    ]
  },
  "escape" => 1
}, 'CGI' );



D:\>
D:\>
D:\>
[download]