RSS feed does not validate because 3rd party plugins insert javascript

[mandrasch]

Hey podlove-dev-team!

The RSS feed of podlove returns the following:
ERR_CONTENT_DECODING_FAILED

After downloading the page via curl I found out that the plugins NextGenGallery (v2) and FooBox FREE (v1.0.3) are causing the problem because they insert javascript code:

<!-- ngg_resource_manager_marker -->    <script type="text/javascript" charset="utf-8">
    /* <![CDATA[ */
    jQuery(document).ready(function($){
        $(function(){
                    $("a[rel=wp_lightbox_fancybox_image]").fancybox({
                        padding         : 10
                    });
                    $("a[rel=wp_lightbox_fancybox_youtube_video]").fancybox({
                        padding     : 10,
                        width       : "80%",
                        height      : "80%",
                        maxWidth    : 640,
                        maxHeight   : 480,
                        autoPlay        : false,
                        helpers : {
                                media : {
                                    youtube : {
                                        params : {
                                            autoplay : 0
                                        }
                                    }
                                }
                        }
                    });
                    $("a[rel=wp_lightbox_fancybox_vimeo_video]").fancybox({
                        padding     : 10,
                        width       : "80%",
                        height      : "80%",
                        maxWidth    : 640,
                        maxHeight   : 480,
                        autoPlay        : false,
                        helpers : {
                                media : {
                                    vimeo : {
                                        params : {
                                            autoplay : 0
                                        }
                                    }
                                }
                        }
                    });
                    $("a[rel=wp_lightbox_fancybox_flash_video]").fancybox({
                        padding     : 10,
                        width       : "80%",
                        height      : "80%",
                        maxWidth    : 640,
                        maxHeight   : 480
                    });
        });
    });
    /* ]]> */
    </script>   <div style="display:none">
    </div>
<script type="text/javascript">/* Run FooBox FREE (v1.0.3) */
(function( FOOBOX, $, undefined ) {
  FOOBOX.o = {wordpress: { enabled: true }, showCount:false, excludes:'.fbx-link,.nofoobox,.nolightbox,a[href*="pinterest.com/pin/create/button/"]', affiliate : { enabled: false }, error: "Could not load the item"};
  FOOBOX.init = function() {
    $(".fbx-link").removeClass("fbx-link");
    $(".gallery, .wp-caption, a:has(img[class*=wp-image-])").foobox(FOOBOX.o);
  };
}( window.FOOBOX = window.FOOBOX || {}, jQuery ));

FooBox.ready(function() {
  //preload the foobox font
  jQuery("body").append("<span style=\"font-family:'foobox'; color:transparent; position:absolute; top:-1000em;\">f</span>");
  FOOBOX.init();

});
</script><?xml version="1.0" encoding="UTF-8"?><rss version="2.0"

I know that this is not really your problem, but the bug was submitted multiple times to the devs of NG Gallery, but there was no fix yet.
https://wordpress.org/support/topic/nextgen-gallery-and-feed-rss

I think that there will be more plugins in future which won't check for rss-feed generation. Because of that maybe you can come up with a solution to strip out javascript which is above the xml tag?

Thanks in advance!

Cheers,
Matthias

[eteubert]

This makes me cringe and is, unfortunately, out of my control.
Please take the time and report a new bug to both plugin authors. All they have to do is insert

if (is_feed()) {
  return;
}

before printing the above.