[ESS] completion in R files

[Vitalie Spinu]

Hi, 

It is not clear what you mean by "not working". Many times everything is
working but not in the "standard" way that users expect. Can you
elaborate on all 3 points below and tell us what you do, and what you
expect.

My bet is that the issue is the TAB key. TAB key does *not* complete by
default. It is emacs' convention that M-TAB (aka C-M-i) completes at
point. TAB is for indentation.

ESS has a flexible support for TAB completion in script buffers. See
ess-tab-complete-in-script and ess-first-tab-never-complete for how to
activate the completion and configure TAB behavior to your needs.

We actually had it activated for a short while, but quickly reverted to
current behavior because it turned to be somewhat aggressive for many
people's taste.

Se also auto-complete integration: http://www.emacswiki.org/emacs/ESSAuto-complete

    HTH, 
    Vitalie

PS: Andreas feel free to follow this to OP on R mailing list.

  >> Rainer M Krug <r.m.krug at gmail.com>
  >> on Fri, 22 Mar 2013 10:41:53 +0100 wrote:

  > On 22/03/13 10:16, Andreas Leha wrote:
  >> Hi all,
  >> 
  >> the possibility to get completion in R files seems not be unknown to many people in the R
  >> community.
  >> 
  >> Maybe someone more knowledgeable than me should respond to this thread 
  >> (http://permalink.gmane.org/gmane.comp.lang.r.devel/33103) on the R-devel mailing list and
  >> explain since when completion in R buffers is available and how to activate it.

  > I would like to piggyback on this question:

  > 1) Is there a way of getting completion with function names and

  > 2) path completion is not working for me in my setup - might it be an interaction with org / ido
  > completion?

  > 3) actually, object completion is also not working...

  > The inferior R process is running, and I get tooltips in the minibuffer.

  > Below please find the ESS section of my emacs.org file

  > Any suggestions welcome,

  > Rainer

  > * ESS
  > ** Load ess
  > #+begin_src emacs-lisp
  >   (add-to-list 'load-path "~/.emacs.d/ess/lisp")
  >   ;; (load "~/.emacs.d/ess/lisp/ess-site")
  >   (require 'ess-site)
  > #+end_src

  > ** ESS help
  > *** kill "bogus" help buffers
  > #+begin_src emacs-lisp
  >   (setq ess-help-kill-bogus-buffers t)
  > #+end_src

  > *** all help in one window and in own frame
  > #+begin_src emacs-lisp
  >   (setq ess-help-own-frame 'one)
  > #+end_src

  > ** activate tracebug
  > #+BEGIN_SRC emacs-lisp
  >   (setq ess-tracebug-prefix "\M-t")
  >   (setq ess-use-tracebug t)
  > #+END_SRC

  > ** Further customisations
  > #+begin_src emacs-lisp
  >   (setq inferior-R-args "--vanilla")
  >   (setq ess-eval-visibly-p nil)
  >   (setq inferior-ess-same-window t)
  >   (setq inferior-ess-client-command "Initial")
  >   (setq inferior-ess-own-frame nil)
  >   (setq ess-ask-for-ess-directory "TRUE")
  > #+end_src
  > ** hideshow
  > hideshow-org (http://github.com/secelis/hideshow-org/tree/master)#+begin_src emacs-lisp
  >   ;;(require 'hideshow)
  >   (require 'hideshow-org)
  >   (add-to-list 'hs-special-modes-alist
  >                '(ess-mode "{" "}" "/[*/]" nil
  >                           hs-c-like-adjust-block-beginning))
  >   (global-set-key "\C-ch" 'hs-org/minor-mode) ;; toggles hideshow-org
  >   (add-hook 'ess-mode-hook 'hs-org/minor-mode) ;; starts for ESS files
  >   ;; (add-hook 'ess-mode-hook '(lambda () (hs-org/minor-mode 1)))
  > #+end_src

  > ** Additional syntax highlighting
  > #+begin_src emacs-lisp
  >   (add-hook 'ess-mode-hook
  >             '(lambda()
  >                (font-lock-add-keywords nil
  >                                        '(

  > ("\\<\\(FIXME\\|TODO\\|COMMENT\\|DONE\\|CHANGES\\|FIXED\\)\\>" 1 font-lock-warning-face prepend) ;
  > highlight certain keywords

  > ("\\<\\(if\\|for\\|function\\|return\\)\\>[\n[:blank:]]*(" 1 font-lock-keyword-face) ; must go
  > first to override highlighting below
  >                                          ("\\<\\([.A-Za-z][._A-Za-z0-9]*\\)[\n[:blank:]]*(" 1
  > font-lock-function-name-face) ; highlight function names

  > ("\\([(,]\\|[\n[:blank:]]*\\)\\([.A-Za-z][._A-Za-z0-9]*\\)[\n[:blank:]]*=[^=]" 2
  > font-lock-reference-face) ; highlight argument names
  >                                          ))
  >                ))
  > #+end_src

  >> 
  >> Regards, Andreas
  >> 
  >> ______________________________________________ ESS-help at r-project.org mailing list 
  >> https://stat.ethz.ch/mailman/listinfo/ess-help>