[BUG] Scheme code block evaluation doesn't show any result [9.5.\ 2 (release_9.5.2-25-gaf6f12 @ /usr/share/emacs/28.1/lisp/org/)]

["Pascal Grossé" <pascal.grosse@gmail.com>]

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I configured a fresh emacs 28 installation to include the package
geiser-guile.

I tried to evaluate this simple org block (after activating scheme with
babel of course):

#+begin_src scheme :session test
(define x 42)
x
#+end_src

I get:
#+RESULTS:

The *Geiser Messages* buffer shows this:

ERROR: <5>: continuation failed ",geiser-eval #f (begin ;; -*- geiser-sch\
eme-implementation: guile -*-
(define x 42)
x
) ()"
(error Selecting deleted buffer)


I managed to track the bug to *ob-scheme.el*:

in (defun org-babel-scheme-execute-with-geiser, on line 179, simply
replace geiser-eval-region with geiser-eval-region/wait so that the
temporary result buffer doesn't close too soon. It then works as
expected.

Pascal Grossé

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From cdc2c10f48585fb6328486d9821526f2bd994400 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pascal=20Gross=C3=A9?= <pascal.grosse@gmail.com>
Date: Fri, 29 Apr 2022 10:33:05 +0200
Subject: [PATCH] Bug fix for scheme code block evaluation showing no result

---
 lisp/ob-scheme.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/ob-scheme.el b/lisp/ob-scheme.el
index 72d2e029e..80a5b76ee 100644
--- a/lisp/ob-scheme.el
+++ b/lisp/ob-scheme.el
@@ -176,7 +176,7 @@ is true; otherwise returns the last value."
 	  (setq geiser-impl--implementation nil)
 	  (let ((geiser-debug-jump-to-debug-p nil)
 		(geiser-debug-show-debug-p nil))
-	    (let ((ret (geiser-eval-region (point-min) (point-max))))
+	    (let ((ret (geiser-eval-region/wait (point-min) (point-max))))
 	      (setq result (if output
 			       (or (geiser-eval--retort-output ret)
 				   "Geiser Interpreter produced no output")
-- 
2.36.0