Backport commit 67977ae59 from Emacs

* lisp/org/org.el (org-make-tags-matcher):
Apply the transform (A+B*)+ -> A(A|B)*

Eliminate some nested repetitions in regexps
67977ae5974e54d34034aa7990cf22dd162c179b
Mattias Engdegård
Sun Oct 29 17:40:36 2023 +0100

lisp/org.el

@@ -11346,7 +11346,7 @@ See also `org-scan-tags'."
   (let ((match0 match)
 	(re (concat
 	     "^&?\\([-+:]\\)?\\({[^}]+}\\|LEVEL\\([<=>]\\{1,2\\}\\)"
-	     "\\([0-9]+\\)\\|\\(\\(?:[[:alnum:]_]+\\(?:\\\\-\\)*\\)+\\)"
+	     "\\([0-9]+\\)\\|\\([[:alnum:]_]\\(?:[[:alnum:]_]\\|\\\\-\\)*\\)"
 	     "\\([<>=]\\{1,2\\}\\)"
 	     "\\({[^}]+}\\|\"[^\"]*\"\\|-?[.0-9]+\\(?:[eE][-+]?[0-9]+\\)?\\)"
 	     "\\|" org-tag-re "\\)"))