[OS X Emacs] Newbie question: Aquamacs autoscroll in second, frame or buffer

[Stefan Strohmeier]

Hi Christian,

On 27 Feb 2009, at 12:04, Christian Liesen wrote:
> I began working with Aquamacs only last week and hope that someone can  
> point me to a solution for auto-scrolling other frames or buffers. I'm  
> lost.
> 
> What I do is this:
> 
> -- open Aquamacs
> -- open a file with R syntax in a first frame
> -- open a "New Buffer in New Frame", start R in that second frame
> 
> Everything works fine except that the second frame with R does not  
> autoscroll. In order to see the results of the commands I'm sending  
> from the syntax frame, I always have to switch to the R frame, scroll  
> down to see the output, then go back again to the syntax frame. This  
> is getting pretty tiresome over time.

I use the following code to see the results of a data 
object in the *R* buffer when a transcript buffer is 
active:

(setq comint-scroll-to-bottom-on-input t)
(setq comint-scroll-to-bottom-on-output t)
(setq comint-move-point-for-output t)

For a better workflow you can try the following code. 
It finds out whether you want to evaluate a marked 
region or a line and binds it to just one shortcut.

   (defun my-ess-eval ()
     (interactive)
     ;;(my-ess-start-R)
     (if (and transient-mark-mode mark-active)
	(call-interactively 'ess-eval-region)
       (call-interactively 'ess-eval-line-and-step)))

   (add-hook 'ess-mode-hook
	    '(lambda()
	       (local-set-key [(shift return)] 'my-ess-eval)))


Hope that helps,

Stefan Strohmeier
Universität Bayreuth