From d628584a7bdb3602c660facedf9851403b26e14c Mon Sep 17 00:00:00 2001
From: Robert Voyer <robert.voyer@gmail.com>
Date: Sat, 17 Feb 2024 21:27:23 -0800
Subject: [PATCH] Fix error in serialize-tags

---
 mxtodo.el | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mxtodo.el b/mxtodo.el
index 784861f..0b267df 100644
--- a/mxtodo.el
+++ b/mxtodo.el
@@ -424,8 +424,8 @@ The resulting timestamp is returned as a ts struct."
   "Serialize TODO tags."
   (let ((tags (mxtodo-item-tags todo)))
     (cond
-     ((null tags ""))
-     ((null (cdr tags)) (car tags))
+     ((equal nil tags) "")
+     ((equal nil (cdr tags)) (car tags))
      (t (mapconcat 'identity tags " ")))))
 
 (defun mxtodo--serialize-as-str (todo)