Backport commit 58102466e from Emacs

* lisp/org-element.el (org-element-headline-parser):
Pretty sure this one should be `skip-chars-backward`, not
`skip-syntax-backward`, since \t isn't a valid syntax code.

org-element: use correct function
58102466e32d4dd9c7d816cdc3f4595a2145f332
Mattias Engdegård
Thu Sep 30 17:16:25 2021 +0200

lisp/org-element.el

@@ -1024,7 +1024,7 @@ Assume point is at beginning of the headline."
 	   (title-start (prog1 (point)
                           (unless (or todo priority commentedp)
                             ;; Headline like "* :tag:"
-                            (skip-syntax-backward " \t"))))
+                            (skip-chars-backward " \t"))))
 	   (tags (when (re-search-forward
 			"[ \t]+\\(:[[:alnum:]_@#%:]+:\\)[ \t]*$"
 			(line-end-position)