Adding regex filter to feedwordpress

Fixed it with:

function fwp_rss_regex ($content) {
$content = preg_replace('/\<[^\>]*\>/i','',$content);
return $content;
}

This solved the problem: 1) Because $content was the item I wanted I wanted to pass through fwp_rss_regex, 2) Because I fixed my preg_replace with /______/i , and 3) I realised $content = $post->post_content(); was either a superfluous (though maybe valid) command, or was it doing nothing in at all.