Modify or Add To the Shortcode Display Template

As of WP RSS Aggregator version 4.0.9 and Excerpts & Thumbnails version 1.6.3, you can use the following filters:

• wprss_single_feed_output - This filter is called after each feed item is added to the output
• feed_output - This filter is called after all feed items are added to the output

These filters can be very useful if you want to add some text, custom HTML, separators or anything else.

Examples

1. Add “Hello World” after each feed item

add_filter( 'wprss_single_feed_output', 'my_function' );
/**
* Add 'Hello World' after each feed item.
*/
function my_function( $output ) {
    $output .= 'Hello World';
    return $output;
}

2. Add “That is all!” after all feed items are listed

add_filter( 'feed_output', 'my_function' );
/**
* Add 'That is all!' after all feed items are listed.
*/
function my_function( $output ) {
   $output .= 'That is all!';
   return $output;
}

How do I add this to my site?