Might it be possible it is CGI.pm that is doing it?   I see code in CGI.pm 
    # set charset to the safe ISO-8859-1
    $self->charset('ISO-8859-1');

[download]
The CGI.pm docs suggest that you can set the charset output in the header by using 
  print $query->header( -type=>'text/html',
                        -charset=>'EUC-JP');

[download]
but of course CGI::Application wants you to set headers using its routine 
  $webapp->header_props(-type=>'text/html', -charset=>'EUC-JP');

[download]
From reading the docs I believe you could also influence the charset in the header by using 
  $query->charset('EUC-JP');

[download]
Is it possible you are calling the CGI.pm header() routine yourself instead of letting CGI::Application handle it?   I don't understand how you are getting two "Content-Type" headers.   Let's see, you can tell CGI::Application to *not* generate headers by doing 
  $webapp->header_type('none');

[download]
Let us know what more experiments find out.

In reply to Re: Content Header automatically added by shenme
in thread Content Header automatically added by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.