commit 2fbcd2850a8c7360cf53191f2880c4d4be911896
Author: Joel Pittet <joel@pittet.ca>
Date:   Sun Feb 23 17:27:03 2014 -0800

    rtl ltr and fieldset labels

diff --git a/core/includes/form.inc b/core/includes/form.inc
index e6b5d26..5cc4d24 100644
--- a/core/includes/form.inc
+++ b/core/includes/form.inc
@@ -1021,15 +1021,10 @@ function theme_fieldset($variables) {
     $element['#attributes']['aria-describedby'] = $description_id;
   }
 
-  // If the element is required, a required marker is appended to the label.
-  // @see theme_form_element_label()
-  $required = '';
+  // If the element is required, a form-required class is appended to
+  // the fieldset.
   if (!empty($element['#required'])) {
-    $marker = array(
-      '#theme' => 'form_required_marker',
-      '#element' => $element,
-    );
-    $required = drupal_render($marker);
+    $element['#attributes']['class'][] = 'form-required';
   }
 
   $legend_attributes = array();
@@ -1042,7 +1037,7 @@ function theme_fieldset($variables) {
   if ((isset($element['#title']) && $element['#title'] !== '') || !empty($element['#required'])) {
     // Always wrap fieldset legends in a SPAN for CSS positioning.
     $output .= '<legend' . new Attribute($legend_attributes) . '><span class="fieldset-legend">';
-    $output .= t('!title!required', array('!title' => $element['#title'], '!required' => $required));
+    $output .= $element['#title'];
     $output .= '</span></legend>';
   }
   $output .= '<div class="fieldset-wrapper">';
@@ -2939,7 +2934,7 @@ function theme_form_element_label($variables) {
     $attributes['for'] = $element['#id'];
   }
 
-  return '<label' . new Attribute($attributes) . '>' . t('!title', array('!title' => $title)) . '</label>';
+  return '<label' . new Attribute($attributes) . '>' . $title . '</label>';
 }
 
 /**
diff --git a/core/modules/system/css/system.theme.css b/core/modules/system/css/system.theme.css
index 9361908..7bdc81f 100644
--- a/core/modules/system/css/system.theme.css
+++ b/core/modules/system/css/system.theme.css
@@ -82,15 +82,29 @@ h4.label {
 .marker {
   color: #e00;
 }
+
+.form-required label:not(.option):before,
 .form-required label:not(.option):after,
+.form-required .fieldset-legend:before
+.form-required .fieldset-legend:after
+.form-required .label:before
 .form-required .label:after {
-  content: "*";
   speak: none;
   color: #e00;
 }
-/*
-Not sure how to deal with this...
-abbr.form-required, */
+
+[dir="ltr"] .form-required label:not(.option):after,
+[dir="ltr"] .form-required .fieldset-legend:not(.option):after,
+[dir="ltr"] .form-required .label:after {
+  content: "*";
+}
+
+[dir="rtl"] .form-required label:not(.option):before,
+[dir="rtl"] .form-required .fieldset-legend:not(.option):before,
+[dir="rtl"] .form-required .label:before {
+  content: "*";
+}
+
 abbr.tabledrag-changed,
 abbr.ajax-changed {
   border-bottom: none;
diff --git a/core/modules/system/lib/Drupal/system/Tests/Form/FormTest.php b/core/modules/system/lib/Drupal/system/Tests/Form/FormTest.php
index 5aabe17..8bb3c0e 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Form/FormTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Form/FormTest.php
@@ -96,7 +96,7 @@ function testRequiredFields() {
 
     // Regular expression to find the expected marker on required elements.
 
-    $required_marker_preg = '@<div class=".*?form-required.*?">@';
+    $required_marker_preg = '@<(?:div|fieldset) class=".*?form-required.*?">@';
     // Go through all the elements and all the empty values for them.
     foreach ($elements as $type => $data) {
       foreach ($data['empty_values'] as $key => $empty) {
diff --git a/core/modules/system/templates/form-required-marker.html.twig b/core/modules/system/templates/form-required-marker.html.twig
deleted file mode 100644
index 8e28020..0000000
--- a/core/modules/system/templates/form-required-marker.html.twig
+++ /dev/null
@@ -1,12 +0,0 @@
-{#
-/**
- * @file
- * Default theme implementation for a form element required marker.
- *
- * Available variables:
- * - attributes: A list of HTML attributes for the marker.
- *
- * @ingroup themeable
- */
-#}
-<span class="form-required" aria-hidden="true">*</span>