[ESS] How to get the assign-key <- via command + return?

[Hofert Jan Marius]

On 2011-09-11, at 15:46 , Kasper Daniel Hansen wrote:

> Step 1: figure out what function you want to bind to the key.  Here
> you can use that you know the function is already bound to underscore,
> so pressing
>  C-h k _
> (C-h k is "help on key"), tells me that the function is called
> ess-smart-underscore.

Dear Kasper,

thank you very much, that clarified a lot! (I am only using emacs for a couple of days now...)

> 
> Step 2: figure out what key you are pressing.  I have never seen the
> 'A' for the command key.  You know of 'meta' and 'control' and
> 'shift'.  Modern Emacs have two other keys 'hyper' and 'super' (abbr h
> and s), which various keys on the keyboard can be bound to.  In my
> experience the Apple key yields either super or hyper in Emacs, but
> that may depend on Emacs version.
> 
> You figure this out by pressing C-h k again:
>  on my apply laptop when I press
>  C-h k Apple+Return
> I get
>  <H-return> is undefined.

Okay, I got <A-return> is undefined. If I replace "hyper" by "A" below, it works! :-))) Thanks a lot!

Cheers,

Marius

> 
> So now I have the key and the function.  All that remains to do is
> bind it.  Use something like
>  (add-hook 'ess-mode-hook
> 	  (lambda ()
> 	    (define-key ess-mode-map [(hyper return)] 'ess-smart-underscore)
> ))
> 
> This defines the key only in ess-mode.  If you have other modes where
> you want to bind it, you need to figure out what the hook and mode-map
> is called, but it is usually (always I think) the name of the mode.
> 
> Kasper
> 
> 
> On Sun, Sep 11, 2011 at 8:20 AM, Hofert  Jan Marius
> <marius.hofert at math.ethz.ch> wrote:
>> Dear ess-experts,
>> 
>> I am a new user of Aquamacs and it helps me a lot to have some "native Apple commands" available which I got used to over the last years. I was wondering how I can get ESS to accept the keystroke "Command (= Apple key) + Return" to give me the assignment arrow "<-".
>> I read some posts I found and tried to adapt those, but Aquamacs reports errors on startup...
>> I don't need/want to change the smart underscore behavior, I just want to add this additional way of putting in the assignment key "<-".
>> 
>> Here are things I tried:
>> ;; define command + return as arrow in R:
>> (define-key osx-key-mode-map (kbd "A-<return>") 'ess-S-assign-key)
>> (setq ess-S-assign-key (kbd "A-<return>"))
>> (ess-toggle-S-assign-key t)
>> (ess-toggle-underscore nil)
>> 
>> Obviously, this does not work. I am not even sure if I address the keys correctly, I also tried <RET>, for example. For the Apple key, I am also not sure if "A" is correct (however, I found it under http://www.emacswiki.org/emacs/CustomizeAquamacs)
>> I tried either one of the first two lines, the second I found online, the first is similar to what I found out to define a keystroke for "eval buffer till here" (which works well and even shows up in the menus):
>> (define-key osx-key-mode-map (kbd "C-c C-<up>") 'ess-eval-buffer-from-beg-to-here)
>> 
>> Cheers,
>> 
>> Marius
>> 
>> 
>> 
>> ETH Zurich
>> Dr. Marius Hofert
>> RiskLab, Department of Mathematics
>> HG E 65.2
>> Rämistrasse 101
>> 8092 Zurich
>> Switzerland
>> 
>> Phone +41 44 632 2423
>> marius.hofert at math.ethz.ch
>> http://www.math.ethz.ch/~hofertj
>> 
>> ______________________________________________
>> ESS-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/ess-help
>> 

ETH Zurich
Dr. Marius Hofert
RiskLab, Department of Mathematics
HG E 65.2
Rämistrasse 101
8092 Zurich
Switzerland

Phone +41 44 632 2423
marius.hofert at math.ethz.ch
http://www.math.ethz.ch/~hofertj