<header> and <article> are not HTML tags. HTML::TreeBuilder seems to ignore tags that are not HTML tags. So I would guess that HTML::TreeBuilder is the wrong tool to process things that are not HTML.
The rest of the post of Anonymous Monk shows you an alternative approach using XML::LibXML. Maybe you should pursue that one.
In reply to Re^3: HTML::Treebuilder look_down not working with <header>, <article> etc
by Corion
in thread HTML::Treebuilder look_down not working with <header>, <article> etc
by Anonymous Monk
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