[Patch] Add support for geiser-scheme-implementation to lisp/ob-scheme.el

[Vladimir Nikishkin <lockywolf@gmail.com>]

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Hello, everyone

ob-scheme doesn't seem to be respecting geiser-scheme-implementation,
which is a buffer-local variable to specify which implementation in
particular to use in an org buffer by default.

This 2-line patch adds this support.

Please, consider adding it.

-- 
Yours sincerely, Vladimir Nikishkin

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From f7b0277b1de47305dbfaeab614cd4530e07921c1 Mon Sep 17 00:00:00 2001
From: Lockywolf <lockywolf@gmail.com>
Date: Sun, 31 May 2020 12:34:53 +0800
Subject: [PATCH] Add support for geiser-scheme-implementation in ob-scheme.el

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

diff --git a/lisp/ob-scheme.el b/lisp/ob-scheme.el
index 5ca7f871d..3eee8213d 100644
--- a/lisp/ob-scheme.el
+++ b/lisp/ob-scheme.el
@@ -43,6 +43,7 @@
 (require 'geiser-impl nil t)
 (defvar geiser-repl--repl)             ; Defined in geiser-repl.el
 (defvar geiser-impl--implementation)   ; Defined in geiser-impl.el
+(defvar geiser-scheme-implementation)  ; Defined in geiser-impl.el
 (defvar geiser-default-implementation) ; Defined in geiser-impl.el
 (defvar geiser-active-implementations) ; Defined in geiser-impl.el
 (defvar geiser-debug-show-debug-p)     ; Defined in geiser-debug.el
@@ -211,6 +212,7 @@ This function is called by `org-babel-execute-src-block'."
       (let* ((result-type (cdr (assq :result-type params)))
 	     (impl (or (when (cdr (assq :scheme params))
 			 (intern (cdr (assq :scheme params))))
+		       geiser-scheme-implementation
 		       geiser-default-implementation
 		       (car geiser-active-implementations)))
 	     (session (org-babel-scheme-make-session-name
-- 
2.26.2