R help - Nov 2003 - Can't get Sweave syntax highlighting with Emacs

I can't get Emacs to automatically do syntax highlighting of 
Sweave files.  I have followed Friedrich's suggestion for code
to insert into my .emacs file.  The complete section from my .emacs
file is given below.  When I load a *.Snw file, font is white until I press
M-x, then the first code and document chunks get highlighted, but not
the rest of the file.  Latex and Noweb menus are active, but not ESS,
and there is no switching of modes as I move the pointer to different
types of chunks.

; -------------------------------------------------------------
; Emacs Speaks Statistics
; mode for R
; -------------------------------------------------------------
(load "/home/waichler/emacs/ess-5.1.19/lisp/ess-site")

; ESS  "emacs speaks statistics" SRW 2-19-01
(autoload 'ess-mode "ess" "ess major mode" t)
(autoload 'ess-noweb-mode "ess" "ess noweb mode" t)
(autoload 'ess-noweb-make-buffer "ess" "open a buffer in R
mode" t)
(autoload 'ess-make-buffer "ess" "open a buffer in R
mode" t)
(setq auto-mode-alist (append '(("\\.R$" . ess-mode))
auto-mode-alist))
(setq auto-mode-alist (append '(("\\.S$" . ess-mode))
auto-mode-alist))
(setq auto-mode-alist (append '(("\\.sp$" . ess-mode))
auto-mode-alist))
(global-set-key [(f10)] 'ess-make-buffer)    
(add-hook 'ess-mode-hook 'turn-on-font-lock)         

; Sweave mode
(defun Rnw-mode ()
  (require 'ess-noweb)
  (noweb-mode)
  (if (fboundp 'R-mode)
      (setq noweb-default-code-mode 'R-mode)))
(add-to-list 'auto-mode-alist '("\\.Rnw\\'" . Rnw-mode))
(add-to-list 'auto-mode-alist '("\\.Snw\\'" . Rnw-mode))
(setq reftex-file-extensions
      '(("Snw" "Rnw" "nw" "tex"
".tex" ".ltx") ("bib" ".bib")))
(setq TeX-file-extensions
      '("Snw" "Rnw" "nw" "tex"
"sty" "cls" "ltx" "texi"
"texinfo"))


Scott

Scott Waichler, Senior Research Scientist
Pacific Northwest National Laboratory
MSIN K9-36
P.O. Box 999
Richland, WA   99352    USA
509-372-4423 (voice)
509-372-6089 (fax)
scott.waichler at pnl.gov
http://hydrology.pnl.gov

"Waichler, Scott R" <Scott.Waichler at pnl.gov> writes:
> I can't get Emacs to automatically do syntax highlighting of 
> Sweave files.  I have followed Friedrich's suggestion for code
> to insert into my .emacs file.  The complete section from my .emacs
> file is given below.  When I load a *.Snw file, font is white until I press
> M-x, then the first code and document chunks get highlighted, but not
> the rest of the file.  Latex and Noweb menus are active, but not ESS,
> and there is no switching of modes as I move the pointer to different
> types of chunks.
This is a contradiction.  You should at least switch from LaTeX to
fundamental mode within chunks, or Noweb isn't working.

You might try:

M-x noweb-set-code-mode <ret> R-mode <ret>

(where <ret> is the enter or return key).

I've had problems like that before -- and havn't had time to fix them
yet. 

(as always, will be fixed with the new version of ESS, which is only
1+ years delayed).

best,
-tony

> ; -------------------------------------------------------------
> ; Emacs Speaks Statistics
> ; mode for R
> ; -------------------------------------------------------------
> (load "/home/waichler/emacs/ess-5.1.19/lisp/ess-site")
>
> ; ESS  "emacs speaks statistics" SRW 2-19-01
> (autoload 'ess-mode "ess" "ess major mode" t)
> (autoload 'ess-noweb-mode "ess" "ess noweb mode" t)
> (autoload 'ess-noweb-make-buffer "ess" "open a buffer in
R mode" t)
> (autoload 'ess-make-buffer "ess" "open a buffer in R
mode" t)
> (setq auto-mode-alist (append '(("\\.R$" . ess-mode))
auto-mode-alist))
> (setq auto-mode-alist (append '(("\\.S$" . ess-mode))
auto-mode-alist))
> (setq auto-mode-alist (append '(("\\.sp$" . ess-mode))
auto-mode-alist))
> (global-set-key [(f10)] 'ess-make-buffer)    
> (add-hook 'ess-mode-hook 'turn-on-font-lock)         
>
> ; Sweave mode
> (defun Rnw-mode ()
>   (require 'ess-noweb)
>   (noweb-mode)
>   (if (fboundp 'R-mode)
>       (setq noweb-default-code-mode 'R-mode)))
> (add-to-list 'auto-mode-alist '("\\.Rnw\\'" .
Rnw-mode))
> (add-to-list 'auto-mode-alist '("\\.Snw\\'" .
Rnw-mode))
> (setq reftex-file-extensions
>       '(("Snw" "Rnw" "nw" "tex"
".tex" ".ltx") ("bib" ".bib")))
> (setq TeX-file-extensions
>       '("Snw" "Rnw" "nw" "tex"
"sty" "cls" "ltx" "texi"
"texinfo"))
>
>
> Scott
>
> Scott Waichler, Senior Research Scientist
> Pacific Northwest National Laboratory
> MSIN K9-36
> P.O. Box 999
> Richland, WA   99352    USA
> 509-372-4423 (voice)
> 509-372-6089 (fax)
> scott.waichler at pnl.gov
> http://hydrology.pnl.gov
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
>
-- 
rossini at u.washington.edu            http://www.analytics.washington.edu/ 
Biomedical and Health Informatics   University of Washington
Biostatistics, SCHARP/HVTN          Fred Hutchinson Cancer Research Center
UW (Tu/Th/F): 206-616-7630 FAX=206-543-3461 | Voicemail is unreliable
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