I answered myself. The solution is to add an action as follows:
/////////////////////////////////////////////////////////////
// filter to change the status of RSS posts imported by
// wpematico
function chg_rss_post_status($post_id){
// check if it is the correct type of post
// in my case posts are added to post type rss-post
if(get_post_type( $post_id ) == "rss-post") {
// check if is not a revision to avoid an endless loop
// this action works only on brand new records
if(!wp_is_post_revision($post_id)) {
// unhook the action so it doesn't trigger
// an endless loop
remove_action('save_post','chg_rss_post_status');
// do whatever you have to do
// in this case change the post status
$post_changes = array(
'ID' => $post_id,
'post_status' => 'pending'
);
wp_update_post($post_changes);
// rehook the function
add_action('save_post','chg_rss_post_status');
}
}
}
add_action('save_post','chg_rss_post_status');
/////////////////////////////////////////////////////////////
The same idea can be extended to deal with automatic tags more finely tuned than the original program, by keyword contained in the title, or to change the post type.
Hope this helps
