I have written an extension that does not behave exactly as you specify, but as follows:
Saves a backup copy of the active document with the date attached as a prefix to the file name. eg: 060123_save_backup_file.vbs. If a backup of the file has already been created for that date then a version number is added to the date prefix. eg: 060123_01_save_backup_file.vbs In the event of an existing backup file with a version number the script will increment the version number in the prefix by one. eg: 060123_02_save_backup_file.vbs You can download it here: http://www.pspad.com/files/pspad/rozsireni/32-save_backup_file.zip -- <http://forum.pspad.com/read.php?2,42277,42301> PSPad freeware editor http://www.pspad.com
