What is the proper behaviour for save-excursion?  The emacs-lisp intro and
the docstring seem to have slightly differing explanations - namely, the
docstring mentions that it saves current-buffer as well as point and mark,
and the emacs-lisp intro does not.  Based on just what it does, I'm not
entirely sure which is correct - the following code snippet, executed in
*scratch*, returns the "*scratch*" buffer but the buffer displayed is the
"bar" buffer, and evaluating current-bufer afterwards returns the "bar"
buffer.

(progn
  (save-excursion
    (switch-to-buffer "bar"))
  (current-buffer))

Either the manual or the docstring should be changed to reflect what it
does, but I'm not entirely sure which based on this.

Thanks,
Nathaniel Flath