[elpa] externals/denote 37dd43bb22 2/2: Add helper to return all denote-file-type keys

[ELPA Syncer]

branch: externals/denote
commit 37dd43bb22e11a4d9af904d9dbd747582552a1b4
Author: Protesilaos Stavrou <info@protesilaos.com>
Commit: Protesilaos Stavrou <info@protesilaos.com>

    Add helper to return all denote-file-type keys
    
    We might need this when checking the return value of the file type
    heuristics.
---
 denote.el | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/denote.el b/denote.el
index 8578a55452..7eb2565ccf 100644
--- a/denote.el
+++ b/denote.el
@@ -753,6 +753,10 @@ Based on FILE-TYPE."
              (plist-get (cdr type) :extension))
            denote-file-types)))
 
+(defun denote--file-type-keys ()
+  "Return all `denote-file-type' keys."
+  (delete-dups (mapcar #'car denote-file-types)))
+
 (defun denote--get-title-line-from-front-matter (title file-type)
   "Retrieve title line from front matter based on FILE-TYPE.
 Format TITLE in the title line. The returned line does not