org-element: Properly remove COMMENT and QUOTE keywords from title in parser

* lisp/org-element.el: Properly remove COMMENT and QUOTE keywords from
  title in parser.
* testing/lisp/test-org-element.el: Add tests.

lisp/org-element.el

@@ -746,11 +746,14 @@ Assume point is at beginning of the headline."
 				     (point)))))
       ;; Clean RAW-VALUE from any quote or comment string.
       (when (or quotedp commentedp)
-	(setq raw-value
-	      (replace-regexp-in-string
-	       (concat "\\(" org-quote-string "\\|" org-comment-string "\\) +")
-	       ""
-	       raw-value)))
+	(let ((case-fold-search nil))
+	  (setq raw-value
+		(replace-regexp-in-string
+		 (concat
+		  (regexp-opt (list org-quote-string org-comment-string))
+		  "\\(?: \\|$\\)")
+		 ""
+		 raw-value))))
       ;; Clean TAGS from archive tag, if any.
       (when archivedp (setq tags (delete org-archive-tag tags)))
       (let ((headline

testing/lisp/test-org-element.el

@@ -727,23 +727,31 @@ CLOCK: [2012-01-01 sun. 00:01]--[2012-01-01 sun. 00:02] =>  0:01"
       (should-not (org-element-property :quotedp (org-element-at-point)))))
   ;; Standard position.
   (org-test-with-temp-text "* QUOTE Headline"
-    (let ((org-quote-string "QUOTE"))
-      (let ((headline (org-element-at-point)))
-	(should (org-element-property :quotedp headline))
-	;; Test removal from raw value.
-	(should (equal (org-element-property :raw-value headline) "Headline"))))
-    ;; Case sensitivity.
-    (let ((org-quote-string "Quote"))
-      (should-not (org-element-property :quotedp (org-element-at-point)))))
+    (let* ((org-quote-string "QUOTE")
+	   (headline (org-element-at-point)))
+      (should (org-element-property :quotedp headline))
+      ;; Test removal from raw value.
+      (should (equal (org-element-property :raw-value headline) "Headline"))))
+  ;; Case sensitivity.
+  (org-test-with-temp-text "* QUOTE Headline"
+    (let* ((org-quote-string "Quote")
+	   (headline (org-element-at-point)))
+      (should-not (org-element-property :quotedp headline))
+      (should (equal (org-element-property :raw-value headline)
+		     "QUOTE Headline"))))
   ;; With another keyword.
   (org-test-with-temp-text "* TODO QUOTE Headline"
-    (let ((org-quote-string "QUOTE")
-	  (org-todo-keywords '((sequence "TODO" "DONE"))))
-      (should (org-element-property :quotedp (org-element-at-point)))))
+    (let* ((org-quote-string "QUOTE")
+	   (org-todo-keywords '((sequence "TODO" "DONE")))
+	   (headline (org-element-at-point)))
+      (should (org-element-property :quotedp headline))
+      (should (equal (org-element-property :raw-value headline) "Headline"))))
   ;; With the keyword only.
   (org-test-with-temp-text "* QUOTE"
-    (let ((org-quote-string "QUOTE"))
-      (should (org-element-property :quotedp (org-element-at-point))))))
+    (let* ((org-quote-string "QUOTE")
+	   (headline (org-element-at-point)))
+      (should (org-element-property :quotedp headline))
+      (should (equal (org-element-property :raw-value headline) "")))))
 
 (ert-deftest test-org-element/headline-comment-keyword ()
   "Test COMMENT keyword recognition."
@@ -753,23 +761,30 @@ CLOCK: [2012-01-01 sun. 00:01]--[2012-01-01 sun. 00:02] =>  0:01"
       (should-not (org-element-property :commentedp (org-element-at-point)))))
   ;; Standard position.
   (org-test-with-temp-text "* COMMENT Headline"
-    (let ((org-comment-string "COMMENT"))
-      (let ((headline (org-element-at-point)))
-	(should (org-element-property :commentedp headline))
-	;; Test removal from raw value.
-	(should (equal (org-element-property :raw-value headline) "Headline"))))
-    ;; Case sensitivity.
-    (let ((org-comment-string "Comment"))
-      (should-not (org-element-property :commentedp (org-element-at-point)))))
+    (let ((org-comment-string "COMMENT")
+	  (headline (org-element-at-point)))
+      (should (org-element-property :commentedp headline))
+      (should (equal (org-element-property :raw-value headline) "Headline"))))
+  ;; Case sensitivity.
+  (org-test-with-temp-text "* COMMENT Headline"
+    (let* ((org-comment-string "Comment")
+	   (headline (org-element-at-point)))
+      (should-not (org-element-property :commentedp headline))
+      (should (equal (org-element-property :raw-value headline)
+		     "COMMENT Headline"))))
   ;; With another keyword.
   (org-test-with-temp-text "* TODO COMMENT Headline"
-    (let ((org-comment-string "COMMENT")
-	  (org-todo-keywords '((sequence "TODO" "DONE"))))
-      (should (org-element-property :commentedp (org-element-at-point)))))
+    (let* ((org-comment-string "COMMENT")
+	   (org-todo-keywords '((sequence "TODO" "DONE")))
+	   (headline (org-element-at-point)))
+      (should (org-element-property :commentedp headline))
+      (should (equal (org-element-property :raw-value headline) "Headline"))))
   ;; With the keyword only.
   (org-test-with-temp-text "* COMMENT"
-    (let ((org-comment-string "COMMENT"))
-      (should (org-element-property :commentedp (org-element-at-point))))))
+    (let* ((org-comment-string "COMMENT")
+	   (headline (org-element-at-point)))
+      (should (org-element-property :commentedp headline))
+      (should (equal (org-element-property :raw-value headline) "")))))
 
 (ert-deftest test-org-element/headline-archive-tag ()
   "Test ARCHIVE tag recognition."