Ticket #29892: 29892.patch

src/wp-includes/l10n.php

@@ -758 +758 @@
         $languages = array();
 
         foreach( (array)glob( ( is_null( $dir) ? WP_LANG_DIR : $dir ) . '/*.mo' ) as $lang_file ) {
-                $lang_file = basename($lang_file, '.mo');
-                if ( 0 !== strpos( $lang_file, 'continents-cities' ) && 0 !== strpos( $lang_file, 'ms-' ) &&
-                        0 !== strpos( $lang_file, 'admin-' ))
-                        $languages[] = $lang_file;
+                $lang_file   = basename( $lang_file, '.mo' );
+
+                // Get all language files
+                if ( ! is_null( $dir ) && WP_LANG_DIR != $dir ) {
+                        $languages[ $lang_file ] = $lang_file;
+
+                // Only keep site language files eg: fr_FR
+                } else {
+                        if ( 5 == mb_strlen( $lang_file ) ) {
+                                $languages[] = $lang_file;
+                        }
+                }
         }
 
         return $languages;