xmllint --version

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xmllint: using libxml version 20900

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cpan -D XML::LibXML

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XML::LibXML
-------------------------------------------------------------------------
        CPAN: Module::CoreList loaded ok (v2.76)
Interface to the libxml library
        S/SH/SHLOMIF/XML-LibXML-2.0107.tar.gz
        D:\perl\perl\site\lib\XML\LibXML.pm
        Installed: 2.0107
        CPAN:      2.0107  up to date

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d:\>perl -MXML::LibXML -le "print $XML::LibXML::VERSION"

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2.0107