Fix begin/end comment

* lisp/org-exp.el (org-export-remove-comment-blocks-and-subtrees): Fix regexp.

Rasmus <rasmus.pank@gmail.com> wrote:

> Hi,
> It seems that
>
> ,----
> | #+BEGIN_COMMENT
> |  ...
> | #+END_COMMENT
> `----
>
> Might be broken in Org-mode 7.5. According to the manual,
>
> ,----
> | Finally, regions surrounded by
> |  #+BEGIN_COMMENT  ...  #+END_COMMENT  will not be exported.
> `----
>
> Consider the following example generated with Org-mode 7.5 in Emacs 24.0.50
> (started without config files).
>
> ,----
> | #+TITLE: this is a test
> |
> | #+BEGIN_COMMENT
> | Don't export me
> | #+END_COMMENT
> |
> | I'd like to be exposed
> `----
>
> The HTML export is:
>
> ,----
> | <snip>
> | <h1 class="title">this is a test</h1>
> |
> | <div class="org-comment">
> | </br>
> | <p>
> | <p>
> | Don't export me
> | </p>
> | </div>
> |
> | I'd like to be exposed
> | <snip>
> `----
>
> The LaTeX export is:
>
> ,----
> | \begin{verbatim}
> | Don't export me
> | \end{verbatim}
> | I'd like to be exposed
> `----
>

Indeed.

It seems that one of the hair-raising regexps that Carsten manages
to come up with is not quite right. Try this patch for now:

--8<---------------cut here---------------start------------->8---
--8<---------------cut here---------------end--------------->8---

Nick

lisp/org-exp.el

@@ -1879,7 +1879,7 @@ table line.  If it is a link, add it to the line containing the link."
     (goto-char (point-min))
     (setq case-fold-search t)
     (while (re-search-forward
-	    "^#\\+begin_comment[ \t]*\n[^\000]*?^#\\+end_comment\\>.*" nil t)
+	    "^#\\+begin_comment[ \t]*\n[^\000]*?\n#\\+end_comment\\>.*" nil t)
       (replace-match "" t t))
     ;; Remove subtrees that are commented
     (goto-char (point-min))