[ESS] executing Julia from org: error in ess-eval-region

Stephen Eglen @je30 @end|ng |rom c@m@@c@uk
Mon Aug 15 14:12:24 CEST 2022

ok... some progress...

a workaround is that you will need to use the following in your
.emacs -- it is simply the version from ob-julia.el with one linne added
(search for SJE).  I do not know why this alist is needed, but with
this, I can confirm that :session now works.

Can you please check?

I did however need to add two Julia Packages, DataFrames and CSV, before
it would work.  This could be better documented as it was not obvious in
the debugger.


(defun org-babel-julia-evaluate-session
    (session body result-type result-params column-names-p)
  "Evaluate BODY in SESSION.
If RESULT-TYPE equals `output' then return standard output as a
string.  If RESULT-TYPE equals `value' then return the value of the
last statement in BODY, as elisp."
  (cl-case result-type
       (setq ess-local-customize-alist t) ;;  SJE --- addition here.
       (insert (org-babel-chomp body))
       (let ((ess-local-process-name
	      (process-name (get-buffer-process session)))
	     (ess-eval-visibly-p nil))
	 (ess-eval-buffer nil)))
     (let ((tmp-file (org-babel-temp-file "julia-")))
	session tmp-file
	(format org-babel-julia-write-object-command
		(org-babel-process-file-name tmp-file 'noquote)
                (if column-names-p "true" "false")
	(org-babel-result-cond result-params
	    (insert-file-contents tmp-file)
	  (org-babel-import-elisp-from-file tmp-file '(4)))
       (delq nil
	      (lambda (line) (when (> (length line) 0) line))
	       (lambda (line) ;; cleanup extra prompts left in output
		 (if (string-match
		      "^\\([>+.]\\([ ][>.+]\\)*[ ]\\)"
		      (car (split-string line "\n")))
		     (substring line (match-end 1))
	       (org-babel-comint-with-output (session org-babel-julia-eoe-output)
		 (insert (mapconcat #'org-babel-chomp
				    (list body org-babel-julia-eoe-indicator)

On Mon, Aug 15 2022, Stephen Eglen wrote:

> ok, thanks.
> In the meantime, I can now replicate your error.  I'll see what I can
> debug.
> On Mon, Aug 15 2022, Fraga, Eric wrote:
>> On Monday, 15 Aug 2022 at 12:20, Stephen Eglen wrote:
>>> thanks.  Do you know why 'results output' is needed for Julia chunks,
>>> but not R?
>> The implementation of ob-julia distributed with org, unfortunately, is
>> not complete.  There is a work-in-progress version [1] that promises to
>> fix a few things but it's not quite ready to replace the current
>> version, I believe.
>> eric
>> Footnotes:
>> [1]  https://github.com/nico202/ob-julia

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