It's not possible to replace the RSS parser (MagpieRSS) via a plugin
|Reported by:||johnbillion||Owned by:||anonymous|
r5845 doesn't do as intended.
The file wp-includes/rss.php is loaded before plugins are loaded, therefore a plugin isn't able to replace the fetch_rss() function (which was the intention of r5845) as it's already been declared in wp-includes/rss.php.
Not sure what to do about this one aside from moving fetch_rss() into wp-includes/pluggable.php.