- Rollback of patch #74645 -- breaks installer.

includes/common.inc

@@ -2074,7 +2074,7 @@ function _drupal_load_stylesheet($matches) {
  * Delete all cached CSS files.
  */
 function drupal_clear_css_cache() {
-  file_scan_directory(file_create_path('css'), '/.*/', '/(\.\.?|CVS)$/', 'file_unmanaged_delete', TRUE);
+  file_scan_directory(file_create_path('css'), '/.*/', array('.', '..', 'CVS'), 'file_unmanaged_delete', TRUE);
 }
 
 /**
@@ -2484,7 +2484,7 @@ function drupal_build_js_cache($files, $filename) {
  * Delete all cached JS files.
  */
 function drupal_clear_js_cache() {
-  file_scan_directory(file_create_path('js'), '/.*/', '/(\.\.?|CVS)$/', 'file_unmanaged_delete', TRUE);
+  file_scan_directory(file_create_path('js'), '/.*/', array('.', '..', 'CVS'), 'file_unmanaged_delete', TRUE);
   variable_set('javascript_parsed', array());
 }
 
@@ -2855,7 +2855,7 @@ function drupal_system_listing($mask, $directory, $key = 'name', $min_depth = 1)
 
   // Get current list of items
   foreach ($searchdir as $dir) {
-    $files = array_merge($files, file_scan_directory($dir, $mask, '/(\.\.?|CVS)$/', 0, TRUE, $key, $min_depth));
+    $files = array_merge($files, file_scan_directory($dir, $mask, array('.', '..', 'CVS'), 0, TRUE, $key, $min_depth));
   }
 
   return $files;

includes/file.inc

@@ -1259,7 +1259,7 @@ function file_download() {
  * @param $mask
  *   The preg_match() regular expression of the files to find.
  * @param $nomask
- *   The preg_match() regular expression of the files to ignore.
+ *   An array of files/directories to ignore.
  * @param $callback
  *   The callback function to call for each match.
  * @param $recurse
@@ -1280,13 +1280,13 @@ function file_download() {
  *   "path", "basename", and "name" members corresponding to the
  *   matching files.
  */
-function file_scan_directory($dir, $mask, $nomask = '/(\.\.?|CVS)$/', $callback = 0, $recurse = TRUE, $key = 'filename', $min_depth = 0, $depth = 0) {
+function file_scan_directory($dir, $mask, $nomask = array('.', '..', 'CVS'), $callback = 0, $recurse = TRUE, $key = 'filename', $min_depth = 0, $depth = 0) {
   $key = (in_array($key, array('filename', 'basename', 'name')) ? $key : 'filename');
   $files = array();
 
   if (is_dir($dir) && $handle = opendir($dir)) {
     while (FALSE !== ($file = readdir($handle))) {
-      if (!preg_match($nomask, $file) && $file[0] != '.') {
+      if (!in_array($file, $nomask) && $file[0] != '.') {
         if (is_dir("$dir/$file") && $recurse) {
           // Give priority to files in this folder by merging them in after any subdirectory files.
           $files = array_merge(file_scan_directory("$dir/$file", $mask, $nomask, $callback, $recurse, $key, $min_depth, $depth + 1), $files);

includes/locale.inc

@@ -97,7 +97,7 @@ function theme_locale_languages_overview_form($form) {
   $header = array(array('data' => t('English name')), array('data' => t('Native name')), array('data' => t('Code')), array('data' => t('Direction')), array('data' => t('Enabled')), array('data' => t('Default')), array('data' => t('Weight')), array('data' => t('Operations')));
   $output = theme('table', $header, $rows, array('id' => 'language-order'));
   $output .= drupal_render($form);
-
+  
   drupal_add_tabledrag('language-order', 'order', 'sibling', 'language-order-weight');
 
   return $output;
@@ -2485,7 +2485,7 @@ function locale_batch_by_language($langcode, $finished = NULL, $skip = array())
     // with names ending with $langcode.po. This allows for filenames
     // like node-module.de.po to let translators use small files and
     // be able to import in smaller chunks.
-    $files = array_merge($files, file_scan_directory(dirname($component->filename) . '/translations', '/(^|\.)' . $langcode . '\.po$/', '/(\.\.?|CVS)$/', 0, FALSE));
+    $files = array_merge($files, file_scan_directory(dirname($component->filename) . '/translations', '/(^|\.)' . $langcode . '\.po$/', array('.', '..', 'CVS'), 0, FALSE));
     $components[] = $component->name;
   }
 
@@ -2517,7 +2517,7 @@ function locale_batch_by_component($components, $finished = '_locale_batch_syste
         // as $langcode.po or with names ending with $langcode.po. This allows
         // for filenames like node-module.de.po to let translators use small
         // files and be able to import in smaller chunks.
-        $files = array_merge($files, file_scan_directory(dirname($component->filename) . '/translations', '/(^|\.)(' . $language_list . ')\.po$/', '/(\.\.?|CVS)$/', 0, FALSE));
+        $files = array_merge($files, file_scan_directory(dirname($component->filename) . '/translations', '/(^|\.)(' . $language_list . ')\.po$/', array('.', '..', 'CVS'), 0, FALSE));
       }
     }
     return _locale_batch_build($files, $finished);

install.php

@@ -410,7 +410,7 @@ function install_settings_form_submit($form, &$form_state) {
  * Find all .profile files.
  */
 function install_find_profiles() {
-  return file_scan_directory('./profiles', '/\.profile$/', '/(\.\.?|CVS)$/', 0, TRUE, 'name', 0);
+  return file_scan_directory('./profiles', '/\.profile$/', array('.', '..', 'CVS'), 0, TRUE, 'name', 0);
 }
 
 /**
@@ -496,7 +496,7 @@ function install_select_profile_form(&$form_state, $profile_files) {
  * Find all .po files for the current profile.
  */
 function install_find_locales($profilename) {
-  $locales = file_scan_directory('./profiles/' . $profilename . '/translations', '/\.po$/', '/(\.\.?|CVS)$/', 0, FALSE);
+  $locales = file_scan_directory('./profiles/' . $profilename . '/translations', '/\.po$/', array('.', '..', 'CVS'), 0, FALSE);
   array_unshift($locales, (object) array('name' => 'en'));
   return $locales;
 }