org.el (org-insert-heading): Fix bug about wrong conversion of lines with :END: or #+end_ into headlines

* org.el (org-insert-heading): Reveal context when called
interactively.  Fix bug about wrong conversion of lines with
:END: or #+end_ into headlines.
(org-in-drawer-p): New function.
(org-meta-return): Use `org-catch-invisible-edits' and the
`org-in-drawer-p' to check whether we are within a drawer.

Thanks to Muchenxuan Tong and John Hendy who reported these errors.

lisp/org.el

@@ -7495,6 +7495,7 @@ and create a new headline with the text in the current line after point
 When INVISIBLE-OK is set, stop at invisible headlines when going back.
 This is important for non-interactive uses of the command."
   (interactive "P")
+  (if (org-called-interactively-p 'any) (org-reveal))
   (cond
    ((or (= (buffer-size) 0)
 	(and (not (save-excursion
@@ -7550,7 +7551,7 @@ This is important for non-interactive uses of the command."
 	     (blank-a (cdr (assq 'heading org-blank-before-new-entry)))
 	     (blank (if (eq blank-a 'auto) empty-line-p blank-a))
 	     pos hide-previous previous-pos)
-	(if ;; At the beginning of a heading, open a new line for insertiong
+	(if ;; At the beginning of a heading, open a new line for insertion
 	    (and (bolp) (org-at-heading-p)
 		 (not eops)
 		 (or (bobp)
@@ -7579,7 +7580,10 @@ This is important for non-interactive uses of the command."
 	     ((and (not arg) (not on-heading) (not on-empty-line)
 		   (not (save-excursion
 			  (beginning-of-line 1)
-			  (looking-at org-list-full-item-re))))
+			  (or (looking-at org-list-full-item-re)
+			      ;; Don't convert :end: lines to headline
+			      (looking-at "^\\s-*:end:")
+			      (looking-at "^\\s-*#\\+end_?")))))
 	      (beginning-of-line 1))
 	     (org-insert-heading-respect-content
 	      (if (not eops)
@@ -20575,9 +20579,10 @@ number of stars to add."
 Calls `org-insert-heading' or `org-table-wrap-region', depending on context.
 See the individual commands for more information."
   (interactive "P")
+  (org-check-before-invisible-edit 'insert)
   (cond
    ((run-hook-with-args-until-success 'org-metareturn-hook))
-   ((or (org-at-drawer-p) (org-at-property-p))
+   ((or (org-at-drawer-p) (org-in-drawer-p) (org-at-property-p))
     (newline-and-indent))
    ((org-at-table-p)
     (call-interactively 'org-table-wrap-region))
@@ -21541,6 +21546,17 @@ block from point."
 	      names))
       nil)))
 
+(defun org-in-drawer-p ()
+  "Is point within a drawer?"
+  (save-match-data
+    (let ((case-fold-search t)
+	  (lim-up (save-excursion (outline-previous-heading)))
+	  (lim-down (save-excursion (outline-next-heading))))
+      (org-between-regexps-p
+       (concat "^[ \t]*:" (regexp-opt org-drawers) ":")
+       "^[ \t]*:end:.*$"
+       lim-up lim-down))))
+
 (defun org-occur-in-agenda-files (regexp &optional nlines)
   "Call `multi-occur' with buffers for all agenda files."
   (interactive "sOrg-files matching: \np")