[PATCH] Fix org-set-tags-command active region bug

[Alex Giorev <alex.giorev@gmail.com>]

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When `org-loop-over-headlines-in-active-region' is 'start-level, the
command should loop only over the headings having the same level as the
first one, but it loops over all headings in the region. This patch fixes
the issue.

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From 289d6bdcb8328554c6dd4136d38f1220d239940e Mon Sep 17 00:00:00 2001
From: alexgiorev <alex.giorev@gmail.com>
Date: Wed, 9 Feb 2022 16:22:09 +0200
Subject: [PATCH] lisp/org.el: Fix org-set-tags-command active region bug

* lisp/org.el (org-set-tags-command): When called with an active
region and `org-loop-over-headlines-in-active-region` having a value
`start-level', it is supposed to loop only over the headings at the
same level as the first one, but without this fix it loops over all
headings in the region.
---
 lisp/org.el | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lisp/org.el b/lisp/org.el
index ef8d460e1..b2091a4fe 100644
--- a/lisp/org.el
+++ b/lisp/org.el
@@ -12183,11 +12183,12 @@ in Lisp code use `org-set-tags' instead."
     (cond
      ((equal '(4) arg) (org-align-tags t))
      ((and (org-region-active-p) org-loop-over-headlines-in-active-region)
-      (let (org-loop-over-headlines-in-active-region) ;  hint: infinite recursion.
+      (let ((original org-loop-over-headlines-in-active-region)
+            (org-loop-over-headlines-in-active-region nil)) ;  hint: infinite recursion.
 	(org-map-entries
 	 #'org-set-tags-command
 	 nil
-	 (if (eq org-loop-over-headlines-in-active-region 'start-level)
+	 (if (eq original 'start-level)
 	     'region-start-level
 	   'region)
 	 (lambda () (when (org-invisible-p) (org-end-of-subtree nil t))))))
-- 
2.25.1