I've merged some code from YOURLS, but the SATANIC bookmarklets still do not work. Ugh.

result.php

@@ -15,6 +15,16 @@ $shorturl = isset( $return['shorturl'] ) ? $return['shorturl'] : '';
 $message  = isset( $return['message'] ) ? $return['message'] : '';
 $title    = isset( $return['title'] ) ? $return['title'] : '';
 
+// Stop here if bookmarklet with a JSON callback function ("instant" bookmarklets)
+if( isset( $_GET['jsonp'] ) && $_GET['jsonp'] == 'yourls' ) {
+	$short = $return['shorturl'] ? $return['shorturl'] : '';
+	$message = "Short URL (Ctrl+C to copy)";
+	header('Content-type: application/json');
+	echo yourls_apply_filter( 'bookmarklet_jsonp', "yourls_callback({'short_url':'$short','message':'$message'});" );
+
+	die();
+}
+
 ?>
 
 <!-- Error reporting -->