Override / append / prepend to Drupal 7 Node Page <title>

In this previous blog entry you learned how to modify the node title itself. Here's how you can, for example for SEO purpose, modify the HTML page title of a node. You may for example add prefix or suffix text:

function YOURMODULE_node_view($node, $view_mode, $langcode) {
  if ($view_mode != 'full') {
    // Do NOT override embedded nodes!
    return;
  }
  $wrapper = entity_metadata_wrapper('node', $node);
  switch ($node->type) {
    case 'YOUR-NODE-TYPE-MACHIE-NAME':
      _YOURMODULE_set_title($wrapper->fieldxyz->value() . ' STATIC TEXT ' . $node->title);
      break;
  }
}

/**
* Helper function to set the current page title.
**/
function _YOURMODULE_set_title($title) {
  $maxLength = 120;
  if(is_string($title) && count($title) > $maxLength){
    substr($title, 0, strrpos(substr($title, 0, 120), ' '));
    drupal_set_title(trim($title, " \n\r\t\v\0&-,;:"));
  }
}

hook_node_view and  drupal_set_title do the trick for you :)