Custom URLs for Comic Feed, see: https://github.com/Frumph/comic-easel/issues/2

gistfile1.aw

<?php
/**
 * Written to help @Frump with https://github.com/Frumph/comic-easel/issues/2
 */
class Comics_URL_Class {
  static function on_load() {
    add_filter( 'init', array( __CLASS__, 'init' ) );
    add_filter( 'request', array( __CLASS__, 'request' ) );
    add_filter( 'feed_link', array( __CLASS__, 'feed_link' ) );
  }
  static function init() {
    register_post_type( 'comic', array(
      'public' => true,
      'label' => 'Commics',
      'rewrite' => array(
        'with_front' => false,
        'slug' => 'comics',
      ),
    ));
  }
  /**
   * request sets the $wp->query_vars array so WordPress will know what query to run and what theme templates to load.
   *
   * @static
   * @param $query_vars
   * @return array
   */
  static function request( $query_vars ) {
    if ( 'comics/feed' == $pagename ) {
      $query_vars['feed'] = 'feed';
    }
    return $query_vars;
  }
  /**
   * feed_link provides the feed URL when WordPress or a theme calls get_feed_link().
   *
   * @static
   * @param $output
   * @param $feed
   * @return mixed
   */
  static function feed_link( $output, $feed ) {
    // You may need to change output here
    return $output;
  }
}
Comics_URL_Class::on_load();