Language in RSS description still visible after hiding

My solutions was to write a custom module, where you can do exactly what you want.

I wanted to create to feeds, one field with texts for facebook, another field with texts for twitter. The output is two different RSS feeds, you can find at:

yoursite/social/twitter
yoursite/social/facebook

The RSS output you can use to connect with dlvr.it or rssgraffiti to publish on facebook, twitter, etc.

The trick was just to copy the node_feed function (http://api.drupal.org/api/drupal/modules--node--node.module/function/nod...) , give it a different name, and change whatever i wanted to change. instead of using the RSS display of the node, i implemented just the facebook and twitter text fields. you can implement whatever field you want.

its a bit quick and dirty, but its a way to solve it.

function custom_rss_menu() {
  $items['social/%social'] = array(
      'title' => 'custom field',
      'page callback' => '_custom_rss_page',
      'access arguments' => array('access content'),
      'page arguments' => array(1)
  );
  return $items;
}

function custom_rss_contents() {
  global $language;
  $query = db_select('node', 'n')
          ->fields('n', array('nid'))
          ->condition('status', 1) //Published.
          ->condition('type', 'article')
          ->orderBy('created', 'DESC'); //Most recent first.
  return $query->execute();
}

/* get the argument */

function social_load($social) {
  return $social;
}

/* output the page, but only if argument is facebook or twitter */

function _custom_rss_page($social) {
  if ($social == "facebook" || $social == "twitter") {
    $result = custom_rss_contents();
    foreach ($result as $node) {
      $items[] = $node->nid;
    }
    custom_rss_feed($items, $social);
  }
}

/* this function is stolen from node_feeds */

function custom_rss_feed($nids = FALSE, $social) {
  global $base_url, $language_content;

  $item_length = variable_get('feed_item_length', 'fulltext');
  $namespaces = array('xmlns:dc' => 'http://purl.org/dc/elements/1.1/');
  $teaser = ($item_length == 'teaser');
  // Load all nodes to be rendered.
  $nodes = node_load_multiple($nids);
  $items = '';
  foreach ($nodes as $node) {

    $item_text = "";

    $node->rss_namespaces = array();
    $node->rss_elements = array(
        array(
            'key' => 'pubDate',
            'value' => gmdate('r', $node->created),
        ),
        array(
            'key' => 'dc:creator',
            'value' => $node->name,
        ),
        array(
            'key' => 'guid',
            'value' => $node->nid . ' at ' . $base_url,
            'attributes' => array('isPermaLink' => 'false'),
        ),
    );
    // HERE WE ADD SOME NODE VARIABLES

    $link = url('node/' . ($node->nid), array('absolute' => TRUE));
    if ($social == "twitter" && isset($node->twitter['und'][0]['safe_value'])) {
      $item_text = $node->twitter['und'][0]['safe_value'];
    }
    if ($social == "facebook" && isset($node->facebook['und'][0]['safe_value'])) {
      $item_text = $node->facebook['und'][0]['safe_value'];
    }
    if ($node->publish['und'][0]['value'] == 1) {
      $items .= format_rss_item($node->title, $link, $item_text, $node->rss_elements);
    }
    unset($item_text);
    unset($link);
  }

  $channel_defaults = array(
      'version' => '2.0',
      'title' => variable_get('site_name', 'Drupal'),
      'link' => $base_url,
      'description' => variable_get('feed_description', ''),
      'language' => $language_content->language,
  );
  $channel = $channel_defaults;

  $output = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
  $output .= "<rss version=\"" . $channel["version"] . "\" xml:base=\"" . $base_url . "\" " . drupal_attributes($namespaces) . ">\n";
  $output .= format_rss_channel($channel['title'], $channel['link'], $channel['description'], $items, $channel['language']);
  $output .= "</rss>\n";

  drupal_add_http_header('Content-Type', 'application/rss+xml; charset=utf-8');
  print $output;
}