I'd like to optionally replace some RSS item titles with a headline meta field I've added to certain post types.
I have the post types showing up in the feed using:
function myfeed_request($qv) {
if (isset($qv['feed']) && !isset($qv['post_type']))
$qv['post_type'] = array('post', 'interviews', 'reviews');
return $qv;
}
add_filter('request', 'myfeed_request');
But I've searched around and can't figure out how to replace the title. Any ideas?