open 1201438.xml ;
register-namespace xh http://www.w3.org/1999/xhtml ;
my $first = 1 ;
for //xh:div[@class='data'] {
    if not($first) echo :n ', ' ;
    $first = 0;
    echo :s :n @id '=' xsh:subst(., '\W', '', 'g') ;
}
echo ;