org.el (org-make-org-heading-search-string): Rewrite using org-element.el

* org.el (org-make-org-heading-search-string): Rewrite using
org-element.el.  Not an interactive function anymore.

lisp/org.el

@@ -9136,23 +9136,15 @@ according to FMT (default from `org-email-link-description-format')."
 	(setq fmt (replace-match "from %f" t t fmt))))
     (org-replace-escapes fmt table)))
 
-(defun org-make-org-heading-search-string (&optional string heading)
-  "Make search string for STRING or current headline."
-  (interactive)
-  (let ((s (or string (org-get-heading)))
+(defun org-make-org-heading-search-string (&optional string)
+  "Make search string for the current headline or STRING."
+  (let ((s (or string
+	       (and (derived-mode-p 'org-mode)
+		    (save-excursion
+		      (org-back-to-heading t)
+		      (plist-get (cadr (org-element-at-point))
+				 :raw-value)))))
 	(lines org-context-in-file-links))
-    (unless (and string (not heading))
-      ;; We are using a headline, clean up garbage in there.
-      (if (string-match org-todo-regexp s)
-	  (setq s (replace-match "" t t s)))
-      (if (string-match (org-re ":[[:alnum:]_@#%:]+:[ \t]*$") s)
-	  (setq s (replace-match "" t t s)))
-      (setq s (org-trim s))
-      (if (string-match (concat "^\\(" org-quote-string "\\|"
-				org-comment-string "\\)") s)
-	  (setq s (replace-match "" t t s)))
-      (while (string-match org-ts-regexp s)
-	(setq s (replace-match "" t t s))))
     (or string (setq s (concat "*" s)))  ; Add * for headlines
     (when (and string (integerp lines) (> lines 0))
       (let ((slines (org-split-string s "\n")))