[PATCH] Fix void variable error `cider-buffer-ns` when specifying :backend header argument

["Christopher M. Miles" <numbchild@gmail.com>]

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After updated to latest commit, I found error,

Reproduce:

When I specified the `:backend` header argument:

#+begin_src clojure :backend babashka
(+ 2 4)
#+end_src

I got error:

#+begin_example
void variable: cider-buffer-ns
#+end_example

Here is the patch fix upper issue.


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From 245fc50b2eae115144c83ad97c1f9490f525b062 Mon Sep 17 00:00:00 2001
From: stardiviner <numbchild@gmail.com>
Date: Wed, 12 Oct 2022 08:32:50 +0800
Subject: [PATCH] lisp/ob-clojure.el: Fix :backend override not work with
 `org-babel-clojure-backend'

* lisp/ob-clojure.el (org-babel-expand-body:clojure): When The source
block specified header argument :backend, the global option
`org-babel-clojure-backend' value is default 'cider, the
`cider-buffer-ns` is not void error.
---
 lisp/ob-clojure.el | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lisp/ob-clojure.el b/lisp/ob-clojure.el
index d6f860e98..a6a463b83 100644
--- a/lisp/ob-clojure.el
+++ b/lisp/ob-clojure.el
@@ -104,8 +104,10 @@
 (defun org-babel-expand-body:clojure (body params)
   "Expand BODY according to PARAMS, return the expanded body."
   (let* ((vars (org-babel--get-vars params))
+         (backend-override (cdr (assq :backend params)))
 	 (ns (or (cdr (assq :ns params))
-		 (if (eq org-babel-clojure-backend 'cider)
+		 (if (and (not backend-override)
+                          (eq org-babel-clojure-backend 'cider))
 		     (or cider-buffer-ns
 			 (let ((repl-buf (cider-current-connection)))
 			   (and repl-buf (buffer-local-value
-- 
2.37.2


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