Allow CiviCRM admin to select from a supported list of Rich Text Editors for use in CiviMail Compose Mailing.
— original post from Matt Chapman (associated with attached patch) ----
Patch to enable FCKeditor module to replace dojoEditor in CiviMail for Drupal installations:
This patch will enable FCK editor module to replace dojoEditor in CiviMail for Drupal installations. It gracefully degrades to dojo editor if the CMS is not Drupal or if the FCKeditor module is not present.
Both Upload.php and Upload.tpl are patched, so this should be applied from the civicrm root.