org-babel: Do not echo output of resolved noweb references

* lisp/ob-core.el (org-babel-execute-src-block): Post-process and
return results even when "none" results parameter is given.  Document
that the result value is returned, as it is assumed by
`org-babel-ref-resolve'.
(org-babel-result-cond): Do return results even when "none" results
parameter is given.

According to the manual ":results none" should only affect how the
results of evaluation are inserted into the buffer.  However, the
results are simply ignored currently.  Fix this.
* lisp/ob-ref.el (org-babel-ref-resolve): Set :results to "none" when
resolving noweb references.  Together with the above changes, this
makes Org not echo the results value yet returning the value
programatically.

Reported in https://orgmode.org/list/7702b511-c289-5688-c64c-fb673324a63a@posteo.eu

lisp/ob-core.el

@@ -712,7 +712,7 @@ a list with the following pattern:
 
 ;;;###autoload
 (defun org-babel-execute-src-block (&optional arg info params)
-  "Execute the current source code block.
+  "Execute the current source code block and return the result.
 Insert the results of execution into the buffer.  Source code
 execution and the collection and formatting of results can be
 controlled through a variety of header arguments.
@@ -776,51 +776,50 @@ block."
 		     (capitalize lang)
 		     (let ((name (nth 4 info)))
 		       (if name (format " (%s)" name) "")))
-	    (if (member "none" result-params)
-		(progn (funcall cmd body params)
-		       (message "result silenced"))
-	      (setq result
-		    (let ((r (funcall cmd body params)))
-		      (if (and (eq (cdr (assq :result-type params)) 'value)
-			       (or (member "vector" result-params)
-				   (member "table" result-params))
-			       (not (listp r)))
-			  (list (list r))
-			r)))
-	      (let ((file (and (member "file" result-params)
-			       (cdr (assq :file params)))))
-		;; If non-empty result and :file then write to :file.
-		(when file
-		  ;; If `:results' are special types like `link' or
-		  ;; `graphics', don't write result to `:file'.  Only
-		  ;; insert a link to `:file'.
-		  (when (and result
-			     (not (or (member "link" result-params)
-				      (member "graphics" result-params))))
-		    (with-temp-file file
-		      (insert (org-babel-format-result
-			       result
-			       (cdr (assq :sep params)))))
-		    ;; Set file permissions if header argument
-		    ;; `:file-mode' is provided.
-		    (when (assq :file-mode params)
-		      (set-file-modes file (cdr (assq :file-mode params)))))
-		  (setq result file))
-		;; Possibly perform post process provided its
-		;; appropriate.  Dynamically bind "*this*" to the
-		;; actual results of the block.
-		(let ((post (cdr (assq :post params))))
-		  (when post
-		    (let ((*this* (if (not file) result
-				    (org-babel-result-to-file
-				     file
-				     (org-babel--file-desc params result)
-                                     'attachment))))
-		      (setq result (org-babel-ref-resolve post))
-		      (when file
-			(setq result-params (remove "file" result-params))))))
-		(org-babel-insert-result
-		 result result-params info new-hash lang)))
+	    (setq result
+		  (let ((r (funcall cmd body params)))
+		    (if (and (eq (cdr (assq :result-type params)) 'value)
+			     (or (member "vector" result-params)
+				 (member "table" result-params))
+			     (not (listp r)))
+			(list (list r))
+		      r)))
+	    (let ((file (and (member "file" result-params)
+			     (cdr (assq :file params)))))
+	      ;; If non-empty result and :file then write to :file.
+	      (when file
+		;; If `:results' are special types like `link' or
+		;; `graphics', don't write result to `:file'.  Only
+		;; insert a link to `:file'.
+		(when (and result
+			   (not (or (member "link" result-params)
+				  (member "graphics" result-params))))
+		  (with-temp-file file
+		    (insert (org-babel-format-result
+			     result
+			     (cdr (assq :sep params)))))
+		  ;; Set file permissions if header argument
+		  ;; `:file-mode' is provided.
+		  (when (assq :file-mode params)
+		    (set-file-modes file (cdr (assq :file-mode params)))))
+		(setq result file))
+	      ;; Possibly perform post process provided its
+	      ;; appropriate.  Dynamically bind "*this*" to the
+	      ;; actual results of the block.
+	      (let ((post (cdr (assq :post params))))
+		(when post
+		  (let ((*this* (if (not file) result
+				  (org-babel-result-to-file
+				   file
+				   (org-babel--file-desc params result)
+                                   'attachment))))
+		    (setq result (org-babel-ref-resolve post))
+		    (when file
+		      (setq result-params (remove "file" result-params))))))
+	      (if (member "none" result-params)
+		  (message "result silenced")
+	        (org-babel-insert-result
+	         result result-params info new-hash lang)))
 	    (run-hooks 'org-babel-after-execute-hook)
 	    result)))))))
 
@@ -3229,20 +3228,19 @@ Emacs shutdown."))
   (declare (indent 1) (debug t))
   (org-with-gensyms (params)
     `(let ((,params ,result-params))
-       (unless (member "none" ,params)
-	 (if (or (member "scalar" ,params)
-		 (member "verbatim" ,params)
-		 (member "html" ,params)
-		 (member "code" ,params)
-		 (member "pp" ,params)
-		 (member "file" ,params)
-		 (and (or (member "output" ,params)
-			  (member "raw"    ,params)
-			  (member "org"    ,params)
-			  (member "drawer" ,params))
-		      (not (member "table" ,params))))
-	     ,scalar-form
-	   ,@table-forms)))))
+       (if (or (member "scalar" ,params)
+	       (member "verbatim" ,params)
+	       (member "html" ,params)
+	       (member "code" ,params)
+	       (member "pp" ,params)
+	       (member "file" ,params)
+	       (and (or (member "output" ,params)
+			(member "raw"    ,params)
+			(member "org"    ,params)
+			(member "drawer" ,params))
+		    (not (member "table" ,params))))
+	   ,scalar-form
+	 ,@table-forms))))
 
 (defun org-babel-temp-file (prefix &optional suffix)
   "Create a temporary file in the `org-babel-temporary-directory'.

lisp/ob-ref.el

@@ -153,7 +153,7 @@ Emacs Lisp representation of the value of the variable."
 	    (setq ref split-ref))
 	  (org-with-wide-buffer
 	   (goto-char (point-min))
-	   (let* ((params (append args '((:results . "silent"))))
+	   (let* ((params (append args '((:results . "none"))))
 		  (regexp (org-babel-named-data-regexp-for-name ref))
 		  (result
 		   (catch :found