useXML::Twig; 
XML::Twig->new(
    twig_handlers => {
        span => sub { $_->replace_with($_->children_copy) },
    },
)->parse(<<'XML')->print;
<d>
  <span>
    foobar
    <span>
      <baz>bax</baz>
      <span style="color:#000000;">
        <ix:nonNumeric name="uk-bus:PrincipalLocation-CityOrTown">Lond
+on</ix:nonNumeric>
      </span>
    </span>
  </span>
</d>
XML

print "\n";

__END__
<d>
    foobar
    <baz>bax</baz><ix:nonNumeric name="uk-bus:PrincipalLocation-CityOr
+Town">London</ix:nonNumeric></d>

[download]

In reply to Re: Regular expression by repellent
in thread Regular expression by sharief

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.