Ticket #18984: 18984.4.diff

wp-admin/includes/media.php

@@ -105 +105 @@
  * @return string the html to insert into editor
  */
 function get_image_send_to_editor($id, $caption, $title, $align, $url='', $rel = false, $size='medium', $alt = '') {
+        if ( ! $alt )
+                $alt = trim( strip_tags( $caption ) );
+        if ( ! $alt )
+                $alt = trim( strip_tags( $title ) );
 
         $html = get_image_tag($id, $alt, '', $align, $size);