[ESS] run R code upon starting each ESS session

[Manuel Teodoro]

Thanks a lot Tyler,

The hook <ess-r-post-run-hook> is exactly what I was looking for. I checked
the documentation but I guess I should search better next time.

In case somebody else is interested, I am sending the code directly from
within emacs, init file so, no need for extra R scripts. It is a wonderful
way to set up R sessions for me. It looks something like this:

(defvar my-r-profile "message(\"Welcome from Emacs\")")

(defun my-r-ess-init ()
  "Sends variable `tt-r-profile' to an ESS process"
  (let ((proc (ess-get-process)))
    (ess-send-string proc tt-r-profile)))

(add-hook 'ess-r-post-run-hook 'my-r-ess-init)

In this way, whatever you place in <my-r-profile> variable is executed upon
startup of the inferior R process.

Cheers!
Manuel

On Tue, Oct 3, 2023 at 9:10 PM Tyler Smith via ESS-help <
ess-help using r-project.org> wrote:

> On Tue, Oct 3, 2023, at 12:52 PM, Manuel Teodoro via ESS-help wrote:
> > Is there a way to run R code upon starting each ESS session?
> >
>
> Hi Manuel,
>
> ESS provides a hook you can use for this purpose. This is described in the
> manual:
>
> https://ess.r-project.org/Manual/ess.html#Customizing-startup
>
> To run a custom script each time ESS starts, use something like the
> following:
>
>     (add-hook 'ess-r-post-run-hook (lambda () (ess-load-file "foo.R")))
>
> - ty
>
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> ESS-help using r-project.org mailing list
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