Personally I wouldn't want this. I'm often working with multiple files and have a blank file or two open as a place to store text clips I'm working with and I wouldn't need them saving.
I also personally feel this sort of behaviour could lead to increased fragmentation of the files. -- Carbonize <http://forum.pspad.com/read.php?2,49586,49589> PSPad freeware editor http://www.pspad.com
