Backport commit b5e3cc3bc from Emacs

* lisp/ob-julia.el: Use lexical-binding.
(ess-eval-visibly-p): Declare.
(org-babel-julia-assign-elisp): Remove unused vars `header` and
`row-names` and corespondingly remove now unused args `colnames-p` and
`rownames-p`.
(org-babel-variable-assignments:julia): Adjust call to
`org-babel-julia-assign-elisp` accordingly.
(org-babel-julia-initiate-session): Use `bound-and-true-p`.
(org-babel-julia-evaluate-external-process)
(org-babel-julia-evaluate-session, org-babel-julia-evaluate):
Remove unused arg `row-names-p`.
(org-babel-execute:julia): Adjust call to
`org-babel-julia-evaluate` accordingly.

* lisp/org/ob-julia.el: Use lexical-binding
b5e3cc3bc597d56dfe09ee500717344649ea0354
Stefan Monnier
Thu Sep 30 10:02:29 2021 -0400

[ km: This was independently applied covered on the bugfix branch with
  the combination of a3b6728f9 and efa498b67.  I'm applying it here
  too for bookkeeping/traceability purposes, and to bring in one
  missing piece (see merge). ]

lisp/ob-julia.el

@@ -1,4 +1,4 @@
-;;; ob-julia.el --- org-babel functions for julia code evaluation
+;;; ob-julia.el --- org-babel functions for julia code evaluation  -*- lexical-binding: t; -*-
 
 ;; Copyright (C) 2013-2021 Free Software Foundation, Inc.
 ;; Authors: G. Jay Kerns, based on ob-R.el by Eric Schulte and Dan Davison
@@ -44,7 +44,7 @@
 			    (raw org html latex code pp wrap)
 			    (replace silent append prepend)
 			    (output value graphics))))
-  "julia-specific header arguments.")
+  "Julia-specific header arguments.")
 
 (add-to-list 'org-babel-tangle-lang-exts '("julia" . "jl"))
 
@@ -58,7 +58,8 @@
   :type 'string)
 
 (defvar ess-current-process-name) ; dynamically scoped
-(defvar ess-local-process-name) ; dynamically scoped
+(defvar ess-local-process-name)   ; dynamically scoped
+(defvar ess-eval-visibly-p)       ; dynamically scoped
 (defun org-babel-edit-prep:julia (info)
   (let ((session (cdr (assq :session (nth 2 info)))))
     (when (and session
@@ -68,7 +69,7 @@
 
 (defun org-babel-expand-body:julia (body params &optional _graphics-file)
   "Expand BODY according to PARAMS, return the expanded body."
-  (mapconcat 'identity
+  (mapconcat #'identity
 	     (append
 	      (when (cdr (assq :prologue params))
 		(list (cdr (assq :prologue params))))
@@ -89,7 +90,7 @@ This function is called by `org-babel-execute-src-block'."
 	   (graphics-file (and (member "graphics" (assq :result-params params))
 			       (org-babel-graphical-output-file params)))
 	   (colnames-p (unless graphics-file (cdr (assq :colnames params))))
-	   (rownames-p (unless graphics-file (cdr (assq :rownames params))))
+	   ;; (rownames-p (unless graphics-file (cdr (assq :rownames params))))
 	   (full-body (org-babel-expand-body:julia body params graphics-file))
 	   (result
 	    (org-babel-julia-evaluate
@@ -97,9 +98,10 @@ This function is called by `org-babel-execute-src-block'."
 	     (or (equal "yes" colnames-p)
 		 (org-babel-pick-name
 		  (cdr (assq :colname-names params)) colnames-p))
-	     (or (equal "yes" rownames-p)
+	     ;; (or (equal "yes" rownames-p)
-		 (org-babel-pick-name
+	     ;;     (org-babel-pick-name
-		  (cdr (assq :rowname-names params)) rownames-p)))))
+	     ;;      (cdr (assq :rowname-names params)) rownames-p))
+	     )))
       (if graphics-file nil result))))
 
 (defun org-babel-normalize-newline (result)
@@ -136,8 +138,9 @@ This function is called by `org-babel-execute-src-block'."
      (lambda (pair)
        (org-babel-julia-assign-elisp
 	(car pair) (cdr pair)
-	(equal "yes" (cdr (assq :colnames params)))
+	;; (equal "yes" (cdr (assq :colnames params)))
-	(equal "yes" (cdr (assq :rownames params)))))
+	;; (equal "yes" (cdr (assq :rownames params)))
+	))
      (mapcar
       (lambda (i)
 	(cons (car (nth i vars))
@@ -150,21 +153,22 @@ This function is called by `org-babel-execute-src-block'."
 (defun org-babel-julia-quote-csv-field (s)
   "Quote field S for export to julia."
   (if (stringp s)
-      (concat "\"" (mapconcat 'identity (split-string s "\"") "\"\"") "\"")
+      (concat "\"" (mapconcat #'identity (split-string s "\"") "\"\"") "\"")
     (format "%S" s)))
 
-(defun org-babel-julia-assign-elisp (name value colnames-p rownames-p)
+(defun org-babel-julia-assign-elisp (name value) ;; colnames-p rownames-p
   "Construct julia code assigning the elisp VALUE to a variable named NAME."
   (if (listp value)
-      (let* ((lengths (mapcar 'length (cl-remove-if-not 'sequencep value)))
+      (let* ((lengths (mapcar #'length (cl-remove-if-not #'sequencep value)))
-             (max (if lengths (apply 'max lengths) 0))
+             (max (if lengths (apply #'max lengths) 0))
-             (min (if lengths (apply 'min lengths) 0)))
+             (min (if lengths (apply #'min lengths) 0)))
         ;; Ensure VALUE has an orgtbl structure (depth of at least 2).
         (unless (listp (car value)) (setq value (list value)))
         (let ((file (orgtbl-to-csv value '(:fmt org-babel-julia-quote-csv-field)))
-              (header (if (or (eq (nth 1 value) 'hline) colnames-p)
+              ;; (header (if (or (eq (nth 1 value) 'hline) colnames-p)
-                          "TRUE" "FALSE"))
+              ;;             "TRUE" "FALSE"))
-              (row-names (if rownames-p "1" "NULL")))
+              ;; (row-names (if rownames-p "1" "NULL"))
+              )
           (if (= max min)
               (format "%s = begin
     using CSV
@@ -183,11 +187,15 @@ end"
   (unless (string= session "none")
     (let ((session (or session "*Julia*"))
 	  (ess-ask-for-ess-directory
-	   (and (boundp 'ess-ask-for-ess-directory)
+	   (and (bound-and-true-p ess-ask-for-ess-directory)
-		ess-ask-for-ess-directory
 		(not (cdr (assq :dir params))))))
       (if (org-babel-comint-buffer-livep session)
 	  session
+	;; FIXME: Depending on `display-buffer-alist', (julia) may end up
+        ;; popping up a new frame which `save-window-excursion' won't be able
+        ;; to "undo", so we really should call a kind of
+        ;; `julia-no-select' instead so we don't need to undo any
+        ;; window-changes afterwards.
 	(save-window-excursion
 	  (when (get-buffer session)
 	    ;; Session buffer exists, but with dead process
@@ -251,16 +259,16 @@ end"
 end")
 
 (defun org-babel-julia-evaluate
-    (session body result-type result-params column-names-p row-names-p)
+    (session body result-type result-params column-names-p) ;; row-names-p
   "Evaluate julia code in BODY."
   (if session
       (org-babel-julia-evaluate-session
-       session body result-type result-params column-names-p row-names-p)
+       session body result-type result-params column-names-p) ;; row-names-p
     (org-babel-julia-evaluate-external-process
-     body result-type result-params column-names-p row-names-p)))
+     body result-type result-params column-names-p))) ;; row-names-p
 
 (defun org-babel-julia-evaluate-external-process
-    (body result-type result-params column-names-p row-names-p)
+    (body result-type result-params column-names-p) ;; row-names-p
   "Evaluate BODY in external julia process.
 If RESULT-TYPE equals 'output then return standard output as a
 string.  If RESULT-TYPE equals 'value then return the value of the
@@ -284,7 +292,7 @@ last statement in BODY, as elisp."
     (output (org-babel-eval org-babel-julia-command body))))
 
 (defun org-babel-julia-evaluate-session
-    (session body result-type result-params column-names-p row-names-p)
+    (session body result-type result-params column-names-p) ;; row-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
@@ -314,7 +322,7 @@ last statement in BODY, as elisp."
 	column-names-p)))
     (output
      (mapconcat
-      'org-babel-chomp
+      #'org-babel-chomp
       (butlast
        (delq nil
 	     (mapcar
@@ -327,13 +335,14 @@ last statement in BODY, as elisp."
 		     (substring line (match-end 1))
 		   line))
 	       (org-babel-comint-with-output (session org-babel-julia-eoe-output)
-		 (insert (mapconcat 'org-babel-chomp
+		 (insert (mapconcat #'org-babel-chomp
 				    (list body org-babel-julia-eoe-indicator)
 				    "\n"))
-                 (inferior-ess-send-input)))))) "\n"))))
+                 (inferior-ess-send-input))))))
+      "\n"))))
 
 (defun org-babel-julia-process-value-result (result column-names-p)
-  "julia-specific processing of return value.
+  "Julia-specific processing of return value.
 Insert hline if column names in output have been requested."
   (if column-names-p
       (cons (car result) (cons 'hline (cdr result)))