old_contents: #!/usr/bin/env python
  """\
  Usage: %prog RULES
  
  RULES is a file defining a set of xdv rules in css syntax, e.g:
  
  <rules xmlns="http://namespaces.plone.org/xdv"
         xmlns:css="http://namespaces.plone.org/xdv+css">
         <copy css:content="#content-wrapper" css:theme="#page-content"/>
  </rules>\
  """
  usage = __doc__
  
  from optparse import OptionParser
  from lxml import etree
  from lxml.cssselect import css_to_xpath
  
  import utils
  
  import logging
  logger = logging.getLogger('xdv')
  
  def convert_css_selectors(rules, prefix='//'):
      """Convert css rules to xpath rules element tree in place
      """
      #XXX: There is a :root pseudo-class - http://www.w3.org/TR/css3-selectors/#root-pseudo
      # We may wish to add support to lxml.cssselect for it some day.
      for element in rules.xpath("//@*[namespace-uri()='%s']/.." % utils.namespaces['css']):
          for name, value in element.attrib.items():
              if value: 
                  if name.startswith('{%s}' % utils.namespaces['css']):
                      element.attrib[utils.localname(name)] = css_to_xpath(value, prefix=prefix)
              else:
                  element.attrib[utils.fullname(element.nsmap[element.prefix], utils.localname(name))] = ""
  
  def main():
      """Called from console script
      """
      parser = OptionParser(usage=usage)
      parser.add_option("-o", "--output", metavar="output.html",
                        help="Output filename (instead of stdout)",
                        dest="output", default=sys.stdout)
      parser.add_option("-p", "--pretty-print", action="store_true",
                        help="Pretty print output",
                        dest="pretty_print", default=False)
      (options, args) = parser.parse_args()
  
      if len(args) != 1:
          parser.error("Invalid number of arguments")
      rules = etree.parse(args[0])
      convert_css_selectors(rules)
      rules.write(options.output, pretty_print=options.pretty_print)
  
  if __name__ == '__main__':
      main()
  
new_contents: #!/usr/bin/env python
  """\
  Usage: %prog RULES
  
  RULES is a file defining a set of xdv rules in css syntax, e.g:
  
  <rules xmlns="http://namespaces.plone.org/xdv"
         xmlns:css="http://namespaces.plone.org/xdv+css">
         <copy css:content="#content-wrapper" css:theme="#page-content"/>
  </rules>\
  """
  usage = __doc__
  
  from optparse import OptionParser
  from lxml import etree
  from lxml.cssselect import css_to_xpath
  
  import utils
  
  import logging
  logger = logging.getLogger('xdv')
  
  def convert_css_selectors(rules, prefix='//'):
      """Convert css rules to xpath rules element tree in place
      """
      #XXX: There is a :root pseudo-class - http://www.w3.org/TR/css3-selectors/#root-pseudo
      # We may wish to add support to lxml.cssselect for it some day.
      for element in rules.xpath("//@*[namespace-uri()='%s']/.." % utils.namespaces['css']):
          for name, value in element.attrib.items():
              if name.startswith('{%s}' % utils.namespaces['css']):
                  if value:
                      element.attrib[utils.localname(name)] = css_to_xpath(value, prefix=prefix)
                  else:
                      element.attrib[utils.fullname(element.nsmap[element.prefix], utils.localname(name))] = ""
  
  def main():
      """Called from console script
      """
      parser = OptionParser(usage=usage)
      parser.add_option("-o", "--output", metavar="output.html",
                        help="Output filename (instead of stdout)",
                        dest="output", default=sys.stdout)
      parser.add_option("-p", "--pretty-print", action="store_true",
                        help="Pretty print output",
                        dest="pretty_print", default=False)
      (options, args) = parser.parse_args()
  
      if len(args) != 1:
          parser.error("Invalid number of arguments")
      rules = etree.parse(args[0])
      convert_css_selectors(rules)
      rules.write(options.output, pretty_print=options.pretty_print)
  
  if __name__ == '__main__':
      main()
  
subject: fix the css rules conversion for if-config=''