[plt-scheme] Specifying directory sandbox evalutes file requires relative to

On Sun, Aug 31, 2008 at 03:29:16PM -0500, Robby Findler wrote:
> I think that Eli recently mentioned that he'd found a way to pack a
> whole bunch of files into a single Emacs buffer and then edit them and
> then unpack them again -- if you did that, you could use an emacs
> macro to make the change to them all.

I've hear legends about this multi-file emacs buffer for years now.  If 
anyone actually knows how to do it, please speak up.  It's exactly the 
mechanism I need to edit programs in languages where breaking code into 
files is part of the syntax.

-- hendrik