class REXML::Parsers::XPathParser

def AndExpr path, parsed
  n = []
  rest = EqualityExpr( path, n )
  if rest != path
    while rest =~ /^\s*( and )/
      n = [ :and, n, [] ]
      rest = EqualityExpr( $', n[-1] )
    end
  end
  if parsed.size == 0 and n.size != 0
    parsed.replace(n)
  elsif n.size > 0
    parsed << n
  end
  rest
end