Removing #137932 which was committed prematurely.

includes/form.inc

@@ -851,7 +851,7 @@ function form_error(&$element, $message = '') {
  *   $_POST data.
  */
 function form_builder($form_id, $form, &$form_state) {
-  static $complete_form, $cache, $enctype;
+  static $complete_form, $cache, $file;
 
   // Initialize as unprocessed.
   $form['#processed'] = FALSE;
@@ -864,7 +864,6 @@ function form_builder($form_id, $form, &$form_state) {
 
   if (isset($form['#type']) && $form['#type'] == 'form') {
     $cache = NULL;
-    $enctype = NULL;
     $complete_form = $form;
     if (!empty($form['#programmed'])) {
       $form_state['submitted'] = TRUE;
@@ -938,12 +937,6 @@ function form_builder($form_id, $form, &$form_state) {
     unset($form_state['buttons']);
   }
 
-  // If an element requires to set the forms content type enctype attribute, we
-  // need to store this info in a static $enctype flag to update the parent
-  // form element. E.g. For files, non-ASCII data, and binary data.
-  if (isset($form['#enctype'])) {
-    $enctype = $form['#enctype'];
-  }
   // If some callback set #cache, we need to flip a static flag so later it
   // can be found.
   if (!empty($form['#cache'])) {
@@ -955,15 +948,14 @@ function form_builder($form_id, $form, &$form_state) {
     $file = TRUE;
   }
   if (isset($form['#type']) && $form['#type'] == 'form') {
-    // Set the form encoding if required.
-    if (isset($enctype)) {
-      $form['#attributes']['enctype'] = $enctype;
-    }
-    
     // We are on the top form, we can copy back #cache if it's set.
     if (isset($cache)) {
       $form['#cache'] = TRUE;
     }
+    // If there is a file element, we set the form encoding.
+    if (isset($file)) {
+      $form['#attributes']['enctype'] = 'multipart/form-data';
+    }
   }
   return $form;
 }

modules/system/system.admin.inc

@@ -517,6 +517,7 @@ function system_theme_settings(&$form_state, $key = '') {
       }
     }
   }
+  $form['#attributes'] = array('enctype' => 'multipart/form-data');
 
   $form = system_settings_form($form);
   // We don't want to call system_settings_form_submit(), so change #submit.

modules/system/system.module

@@ -341,7 +341,6 @@ function system_elements() {
   $type['file'] = array(
     '#input' => TRUE,
     '#size' => 60,
-    '#enctype' => 'multipart/form-data',
   );
 
 

modules/upload/upload.module

@@ -258,6 +258,7 @@ function upload_form_alter(&$form, $form_state, $form_id) {
       }
       else {
         $form['attachments']['wrapper'] += _upload_form($node);
+        $form['#attributes']['enctype'] = 'multipart/form-data';
       }
     }
     $form['#submit'][] = 'upload_node_form_submit';

modules/user/user.pages.inc

@@ -246,6 +246,7 @@ function user_profile_form($form_state, $account, $category = 'account') {
       '#submit' => array('user_edit_delete_submit'),
     );
   }
+  $form['#attributes']['enctype'] = 'multipart/form-data';
 
   return $form;
 }