Merge pull request #2465 from ec-europa/nept-2392

NEPT-2392: Port link patch to 2.4

resources/multisite_drupal_standard.make

@@ -459,6 +459,8 @@ projects[libraries][version] = "2.3"
 
 projects[link][subdir] = "contrib"
 projects[link][version] = "1.4"
+; https://webgate.ec.europa.eu/CITnet/jira/browse/NEPT-2251
+projects[link][patch][] = patches/nept-2251-link-SA-CONTRIB-2019-020.patch
 
 projects[linkchecker][subdir] = "contrib"
 projects[linkchecker][version] = "1.2"

resources/patches/nept-2251-link-SA-CONTRIB-2019-020.patch

@@ -0,0 +1,18 @@
+--- link.module	2019-02-20 21:18:42.621974792 +0000
++++ link.module	2019-02-20 21:19:16.553471657 +0000
+@@ -276,6 +276,15 @@
+       _link_validate($items[$delta], $delta, $field, $entity, $instance, $langcode, $optional_field_found, $errors);
+     }
+   }
++  foreach ($items as $delta => $value) {
++    if (isset($value['attributes']) && is_string($value['attributes'])) {
++      $errors[$field['field_name']][$langcode][$delta][] = array(
++        'error' => 'link_required',
++        'message' => t('String values are not acceptable for attributes.'),
++        'error_element' => array('url' => TRUE, 'title' => FALSE),
++      );
++    }
++  }
+
+   if ($instance['settings']['url'] === 'optional' && $instance['settings']['title'] === 'optional' && $instance['required'] && !$optional_field_found) {
+     $errors[$field['field_name']][$langcode][0][] = array(