PREUN

/bin/sh

if [ $1 -eq 0 ]; then
  perl -MXML::SAX -e \
    'XML::SAX->remove_parser(q(XML::SAX::PurePerl))->save_parsers()'
fi

POSTIN

/bin/sh

perl -MXML::SAX -e \
  'XML::SAX->add_parser(q(XML::SAX::PurePerl))->save_parsers()' 2>/dev/null