- Patch #147662 by Gordon et al: add new #pre_render callback to drupal_render().

includes/common.inc

@@ -403,6 +403,7 @@ function drupal_http_request($url, $headers = array(), $method = 'GET', $data =
 
   // Parse the URL, and make sure we can handle the schema.
   $uri = parse_url($url);
+
   switch ($uri['scheme']) {
     case 'http':
       $port = isset($uri['port']) ? $uri['port'] : 80;
@@ -2483,6 +2484,25 @@ function drupal_render(&$elements) {
     return NULL;
   }
 
+  // If the default values for this element haven't been loaded yet, populate
+  // them.
+  if (!isset($elements['#defaults_loaded']) || !$elements['#defaults_loaded']) {
+    if ((!empty($elements['#type'])) && ($info = _element_info($elements['#type']))) {
+      $elements += $info;
+    }
+  }
+
+  // Make any final changes to the element before it is rendered. This means
+  // that the $element or the chilren can be altered or corrected before the
+  // element is rendered into the final text.
+  if (isset($elements['#pre_render'])) {
+    foreach ($elements['#pre_render'] as $function) {
+      if (function_exists($function)) {
+        $elements = $function($elements);
+      }
+    }
+  }
+
   $content = '';
   // Either the elements did not go through form_builder or one of the children
   // has a #weight.
@@ -2534,6 +2554,16 @@ function drupal_render(&$elements) {
   }
 
   if (isset($content) && $content !== '') {
+    // Filter the outputed content and make any last changes before the
+    // content is sent to the browser. The changes are made on $content
+    // which allows the output'ed text to be filtered.
+    if (isset($elements['#post_render'])) {
+      foreach ($elements['#post_render'] as $function) {
+        if (function_exists($function)) {
+          $content = $function($content, $elements);
+        }
+      }
+    }
     $prefix = isset($elements['#prefix']) ? $elements['#prefix'] : '';
     $suffix = isset($elements['#suffix']) ? $elements['#suffix'] : '';
     return $prefix . $content . $suffix;
@@ -2835,7 +2865,7 @@ function drupal_delete_add_query($query) {
  *       'question'    => Optional. The question for the confirm form.
  *       'destination' => Optional. The destination path for form submissions and form cancellations.
  *
- *   Also, any valid options from the $options argument of confirm_form() may 
+ *   Also, any valid options from the $options argument of confirm_form() may
  *   be passed, and they will be passed through to the confirm form.
  */
 function drupal_delete_confirm($confirm) {
@@ -3450,4 +3480,3 @@ function watchdog_severity_levels() {
     WATCHDOG_DEBUG    => t('debug'),
   );
 }
-

includes/form.inc

@@ -699,6 +699,7 @@ function form_builder($form_id, $form, &$form_state) {
   if (isset($form['#input']) && $form['#input']) {
     _form_builder_handle_input_element($form_id, $form, $form_state);
   }
+  $form['#defaults_loaded'] = TRUE;
 
   // We start off assuming all form elements are in the correct order.
   $form['#sorted'] = TRUE;

includes/locale.inc

@@ -1726,7 +1726,7 @@ function _locale_export_get_strings($language = NULL, $group = 'default') {
 
 /**
  * Generates the PO(T) file contents for given strings.
- * 
+ *
  * @param $language
  *   Language object to generate the output for, or NULL if generating
  *   translation template.
@@ -1739,7 +1739,7 @@ function _locale_export_get_strings($language = NULL, $group = 'default') {
  */
 function _locale_export_po_generate($language = NULL, $strings = array(), $header = NULL) {
   global $user;
-  
+
   if (!isset($header)) {
     if (isset($language)) {
       $header = '# '. $language->name .' translation of '. variable_get('site_name', 'Drupal') ."\n";
@@ -1776,9 +1776,9 @@ function _locale_export_po_generate($language = NULL, $strings = array(), $heade
       $header .= "\"Plural-Forms: nplurals=INTEGER; plural=EXPRESSION;\\n\"\n";
     }
   }
-  
+
   $output = $header ."\n";
-  
+
   foreach ($strings as $lid => $string) {
     // Only process non-children, children are output below their parent.
     if (!isset($string['child'])) {

includes/mail.inc

@@ -277,7 +277,7 @@ function drupal_html_to_text($string, $allowed_tags = NULL) {
     }
     // Process blocks of text.
     else {
-      // Convert inline HTML text to plain text. 
+      // Convert inline HTML text to plain text.
       $value = trim(preg_replace('/\s+/', ' ', decode_entities($value)));
       if (strlen($value)) {
         $chunk = $value;
@@ -295,7 +295,7 @@ function drupal_html_to_text($string, $allowed_tags = NULL) {
       // Remove non-quotation markers from indentation.
       $indent = array_map('_drupal_html_to_text_clean', $indent);
     }
-    
+
     $tag = !$tag;
   }
 

modules/node/node.module

@@ -3091,7 +3091,7 @@ function node_content_access($op, $node) {
       return TRUE;
     }
   }
-  
+
   if ($op == 'delete') {
     if (user_access('delete '. $type .' content') || (user_access('delete own '. $type .' content') && ($user->uid == $node->uid))) {
       return TRUE;

modules/user/user.module

@@ -522,13 +522,13 @@ function user_search($op = 'search', $keys = NULL, $skip_access_check = FALSE) {
           // Administrators can also search in the otherwise private email field.
           $result = pager_query("SELECT name, uid, mail FROM {users} WHERE LOWER(name) LIKE LOWER('%%%s%%') OR LOWER(mail) LIKE LOWER('%%%s%%')", 15, 0, NULL, $keys, $keys);
           while ($account = db_fetch_object($result)) {
-            $find[] = array('title' => $account->name .' ('. $account->mail .')', 'link' => url('user/'. $account->uid, array('absolute' => TRUE)));  
+            $find[] = array('title' => $account->name .' ('. $account->mail .')', 'link' => url('user/'. $account->uid, array('absolute' => TRUE)));
           }
         }
         else {
-          $result = pager_query("SELECT name, uid FROM {users} WHERE LOWER(name) LIKE LOWER('%%%s%%')", 15, 0, NULL, $keys); 
+          $result = pager_query("SELECT name, uid FROM {users} WHERE LOWER(name) LIKE LOWER('%%%s%%')", 15, 0, NULL, $keys);
           while ($account = db_fetch_object($result)) {
-            $find[] = array('title' => $account->name, 'link' => url('user/'. $account->uid, array('absolute' => TRUE)));  
+            $find[] = array('title' => $account->name, 'link' => url('user/'. $account->uid, array('absolute' => TRUE)));
           }
         }
         return $find;