As a general note on working with xpath: it pays off to use a decent XML editor. They support interactively constructing xpath expressions and validate them on the fly. You continuously see the results returned by the expression. In my experience this saves a lot of time debugging:) Before you use the expression in your script you have validated that it's correct. In your example it reports syntax errors e.g. 'XPath syntax error at char 25 in ... Unexpected token "<numeric literal>" after axis name'. While you could still argue that the message could be improved, it's better then the "unrecongnised expression in handler" message. I recommend you to take a look at oXygen or XMLspy. They can ease your "xml-life" considerably (try debugging a xslt!). (There are many free/open source XML editors available but IMHO none of them even comes close to the commercial ones.)

Cheers

Harry


In reply to Re: XML::Twig and handles on regex/xpath by dHarry
in thread XML::Twig and handles on regex/xpath by Eythil

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.