[ESS] Indentation level

[David Scott]

Martin Maechler wrote:
> On Tue, May 11, 2010 at 16:32, Rodney Sparapani <rsparapa at mcw.edu> wrote:
> 
>> On 05/11/10 09:11 AM, gerald.jean at dgag.ca wrote:
>>
>>> for me the default is 4 as well and setting it in whatever fashion has not
>>> effect on the local buffer.
>>>
>>> ess-indent-level is a variable defined in `ess-custom.el'.
>>> Its value is 4
>>> Local in buffer DataPrep.q; global value is 2
>>>
>>> I setted it as recommanded by Rich and yes, I restarted Emacs.
>>>
>>> Gérald Jean
>>>
>>>
>> Hi Gerald:
>>
>> But the sources say 2 and that is what I see as well.  AFAICT, it
>> hasn't changed recently either.  Is everybody running 5.8?
>>
> 
> Yes, the default is definitely 2 and has always been so.
> As R-core, we've set "our default" to 4, and indeed I have been preferring
> that myself;
> but nonetheless, the ESS default has always been 2.
> 
> One way to set it to 4 and change other things as well, is using
> what we have had in the "R Internals" (and previously "R Extensions") manual
> for many years;
> e.g. from the Swiss (CH) CRAN mirror:
> 
>     http://stat.ethz.ch/CRAN/doc/manuals/R-ints.html#R-coding-standards
> (about one page down):
> 
>      ;;; ESS
>      (add-hook 'ess-mode-hook
>                (lambda ()
>                  (ess-set-style 'C++ 'quiet)
>                  ;; Because
>                  ;;                                 DEF GNU BSD K&R C++
>                  ;; ess-indent-level                  2   2   8   5   4
>                  ;; ess-continued-statement-offset    2   2   8   5   4
>                  ;; ess-brace-offset                  0   0  -8  -5  -4
>                  ;; ess-arg-function-offset           2   4   0   0   0
>                  ;; ess-expression-offset             4   2   8   5   4
>                  ;; ess-else-offset                   0   0   0   0   0
>                  ;; ess-close-brace-offset            0   0   0   0
> 0
> 
>           [.... other recommendatinos omitted here ...]
> 
> and as others have said repeatedly on this thread:
> Yes, you should and I think *must* set this via adding to the ess-mode-hook
> BTW: In the above Emacs code, most are comments showing you the diverse
> style settings,
> mentioning indeed that the default ("DEF") is at 2.
> 
> Martin Maechler, ETH Zurich
> 

OK. I finally got this to work, simple really, only took a few hours of 
messing about. Changed C++ to DEF in Martin's code above:

;;; ESS
      (add-hook 'ess-mode-hook
                (lambda ()
                  (ess-set-style 'DEF 'quiet)
                  ;; Because
                  ;;                                 DEF GNU BSD K&R C++
                  ;; ess-indent-level                  2   2   8   5   4
                  ;; ess-continued-statement-offset    2   2   8   5   4
                  ;; ess-brace-offset                  0   0  -8  -5  -4
                  ;; ess-arg-function-offset           2   4   0   0   0
                  ;; ess-expression-offset             4   2   8   5   4
                  ;; ess-else-offset                   0   0   0   0   0
                  ;; ess-close-brace-offset            0   0   0   0   0
                  (add-hook 'local-write-file-hooks
                            (lambda ()
                              (ess-nuke-trailing-whitespace)))))
      (setq ess-nuke-trailing-whitespace-p 'ask)
      ;; or even
      ;; (setq ess-nuke-trailing-whitespace-p t)
      ;;; Perl
      (add-hook 'perl-mode-hook
                (lambda () (setq perl-indent-level 4)))

and lo and behold I got the default settings.

Thanks for all advice. Sorry to be obtuse, I just don't get lisp. Maybe 
it all stems from my Computer Science lecturer telling me lisp is an 
acronym for lots of irritating silly parentheses ...

I do love Emacs + ESS + AUCTeX + RefTex though. Brilliant when it is all 
working, so thanks to all contributors.

David Scott



_________________________________________________________________
David Scott	Department of Statistics
		The University of Auckland, PB 92019
		Auckland 1142,    NEW ZEALAND
Phone: +64 9 923 5055, or +64 9 373 7599 ext 85055
Email:	d.scott at auckland.ac.nz,  Fax: +64 9 373 7018

Director of Consulting, Department of Statistics