[ESS] problems with emacclient

Kasper Daniel Hansen khansen at stat.Berkeley.EDU
Sat Nov 5 03:34:34 CET 2005

On Nov 4, 2005, at 11:19 AM, Martin Maechler wrote:

>>>>>> "Brendan" == Brendan Halpin <brendan.halpin at ul.ie>
>>>>>>     on 04 Nov 2005 10:10:04 +0000 writes:
>>> On Nov 3, 2005, at 2:03 PM, Rodney Sparapani wrote:
>>>> There is alot of code that depends on whether you are running GNU
>>>> Emacs
>>>> or XEmacs.  So, most people have a site defined way of doing that
>>>> like:
>>>> (setq xemacs-p nil) ; for GNU Emacs
>>>> (setq xemacs-p t)   ; for XEmacs
>>>> So actually, the code is incomplete.  It needs to be something  
>>>> like:
>>>>> (add-hook
>>>>>   'inferior-ess-mode-hook
>>>>>   '(lambda()
>>>>>     (if (xemacs-p) (gnuserv-start)
>>>>> 	(server-start nil))))
> no!  (xemacs-p) would be a function call!
>     Brendan> To make it stand-alone, the snippet could reduce to
>     Brendan> (if (fboundp 'gnuserv-start)
>     Brendan> (gnuserv-start)
>     Brendan> (server-start nil))
>     Brendan> i.e. if the Xemacs version of the function is bound  
> (exists) call
>     Brendan> that, otherwise call the GNU Emacs version.
> not really;  the whole point of my snippet was to start the
> server only when 'ess-mode' is activated and not every time
> (X)emacs is started.
> But then, yes, I'm really sorry for using our local xemacs-p
> variable.
> "The" correct way {namely, both readable and portable}
> is what we use in ESS in many places :
>       (featurep 'xemacs)
> Hence [together with Rodney's enhancement], the thing to add to
> your ~/.emacs would be
> (add-hook
>   'inferior-ess-mode-hook
>   '(lambda()
>     (if (featurep 'xemacs)
>         (gnuserv-start)
>        ;; else: GNU emacs
>        (server-start nil))))

I have now tested this and it works. In addition Seth's suggestion  
was spot on. For the non-MacOS users (in case this pops up again on  
the list): OS X ships with its own version of Emacs. Most users  
install a newer more Mac-integrated Emacs. In my case, having
   options(editor = "emacsclient")
in R meant that R picked up the "shipped" version of Emacs, not the  
one I wanted. I needed to put
   options(editor = "/Applications/Emacs.app/Contents/MacOS/bin/ 
for it to work (you might have to change the path depending on which  
type of Mac-like Emacs you are using, I am using the "Carbon Emacs")


> Martin

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