Emacs: Multiple files in one buffer?

[Steven W. Orr]

On Thursday, Mar 8th 2007 at 11:07 -0500, quoth aluminumsulfate at earthlink.net:

=>
=>This message is addressed to all the Emacs gurus on the list...
=>
=>I have a vague sort-of-almost memory of having read something about a
=>major mode which will let you edit multiple files in a single buffer.
=>I wondered how that could work, how emacs could know which part of the
=>buffer belonged to which file, but I didn't think it was useful
=>(indeed, I deemed it dangerous) at the time.
=>
=>Now, I have a use for this mode.  But now I can't find any information
=>on it!  Not on google, not under info.  Does this major mode really
=>exist, or is long-term exposure to emacs just starting to take its
=>toll on me?

I'm pretty good with emacs and I've never heard of such a thing. 
[Qualification: My .emacs is over 30K]
The only thing that comes to mind with regard to this topic is something 
like cc-mode (or is it just called c-mode now) which formats C code 
differently from the way it handles comments.

A better idea is to find out more about what you want to do. I just might 
be that minor modes would accomplish what you want.

-- 
Time flies like the wind. Fruit flies like a banana. Stranger things have  .0.
happened but none stranger than this. Does your driver's license say Organ ..0
Donor?Black holes are where God divided by zero. Listen to me! We are all- 000
individuals! What if this weren't a hypothetical question?
steveo at syslang.net