[elpa] externals/denote ceff94f5a9 1/2: Return empty string when no keywords in denote--format-keywords-for-org-front-matter

[ELPA Syncer]

branch: externals/denote
commit ceff94f5a9777a690e814739ddb40a073ea8a887
Author: Jean-Philippe Gagné Guay <jeanphilippe150@gmail.com>
Commit: Jean-Philippe Gagné Guay <jeanphilippe150@gmail.com>

    Return empty string when no keywords in 
denote--format-keywords-for-org-front-matter
---
 denote.el | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/denote.el b/denote.el
index 63ea89fd62..4b3598b057 100644
--- a/denote.el
+++ b/denote.el
@@ -646,7 +646,9 @@ identifier: %s
 
 (defun denote--format-keywords-for-org-front-matter (keywords)
   "Format front matter KEYWORDS for org file type."
-  (format ":%s:" (string-join keywords ":")))
+  (if keywords
+      (format ":%s:" (string-join keywords ":"))
+    ""))
 
 (defun denote--extract-keywords-from-front-matter (keywords-string)
   "Extract keywords list from front matter KEYWORDS-STRING."