Re: set-buffer-major-mode: how to use on buffer without file?

[Stefan Monnier <monnier@iro.umontreal.ca>]

> I would like to set major mode for the buffer which only displays a
> revision in a buffer without associated file.

Your use of "the buffer" above is hilarious: it makes it sound like we
all should know, as a matter of course, which buffer it is you're
talking about, like if it had been on the front page of the newspaper
or something.

> The buffer name may end with let us say .scm for scheme or .org for
> Org mode, I would like to invoke the major mode based on the
> file extension.

You may want to do: `C-h o C-x v ~` and then look at the implementation
of that command (since that command does something closely related to
what you describe).


        Stefan