How to properly load AUCTeX for Emacs 23+

[Sebastien Vauban <sva-news-D0wtAvR13HarG/iDocfnWg@public.gmane.org>]

Hello,

[This was posted first to comp.text.tex but did not receive any
answer -- trying here!]

Trying to make the smallest Emacs configuration needed for editing LaTeX
with AUCTeX (which has to work as well for Emacs 23), I came up with the
following:

--8<---------------cut here---------------start------------->8---
;; AUCTeX + preview-latex
(add-to-list 'load-path "~/.emacs.d/elpa/auctex-11.87.3") ;; <- update this!
(load "auctex.el" nil t t)
(load "preview-latex.el" nil t t)
--8<---------------cut here---------------end--------------->8---

from the current documentation found on
http://www.gnu.org/software/auctex/manual/auctex/Loading-the-package.html.

However,

- When loading a .tex file, I had different errors (such as
  "void-function font-latex-setup") which forced me to add different
  libraries to load during Emacs startup.

- `preview-latex.el' does NOT exist: it now (?) is `preview.el'.

Hence, this new configuration file which seems to work fine (so far):

--8<---------------cut here---------------start------------->8---
;; AUCTeX
(add-to-list 'load-path "~/.emacs.d/elpa/auctex-11.87.3") ;; <- update this!
(load "auctex.el" nil t t)
(load "font-latex.el" nil t t)
(load "tex-bar.el" nil t t)

;; preview-latex
(load "preview.el" nil t t)
--8<---------------cut here---------------end--------------->8---

Am I doing something wrong?  Is the doc NOT up-to-date?  Are both true? ;-)

Best regards,
  Seb

-- 
Sebastien Vauban