How to Add Shortlink Support to Twitter Tools

By default the Twitter Tools plugin uses URLs such as http://example.com/p=123 in your tweets. However, if you are using one of the URL shortener plugins (that make use of the standard get_shortlink() function), chances are that you would rather include the URL generated by that plugin. To do that, simply add this to your theme’s functions.php:

add_filter('tweet_blog_post_url', 'get_shortlink_for_twitter');
function get_shortlink_for_twitter($url) {
	return wp_get_shortlink(url_to_postid($url));
}