I would like to temporarily store and manipulate sensitive data in vim. I know it keeps cut and copy registers and swap files on the hard drive, though. If you think about this for a moment, you'll see my concern. I would like to open a vim session in which none of the data I enter or manipulate gets written to the hard drive. I have heard of PGP plugins for vim, in which you can write e-mail securely, encrypt it for certain recipients, save it, then encrypt it. Such a plugin must have already solved this problem. But I don't need any of the encryption features. I just need the "secretive" mode.
What will I have to do to accomplish this?