org-element-map no-recursion argument?

[James Harkins <jamshark70@gmail.com>]

I've written some emacs-lisp using org-element-map to iterate over source 
code blocks in an org buffer and insert them into another buffer, including 
a listing number and caption (so it's different from tangling).

I was just trying to tweak it to ignore source code blocks in a comment 
section.

More specifically -- I had moved some material into a "Removed" subtree 
(with a tag "noexport"). This subtree contains some source blocks, but I 
want my function to ignore these.

I thought I could wrap the entire "Removed" section in #+begin/end_comment, 
and then tell org-element-map to skip comment blocks for recursion.

(org-element-map tree 'src-block (lambda (element) ...)
  nil nil 'comment)

But this has no effect. I guess the src-block filter erases the distinction 
between "live" and commented sections.

I can work around it by commenting out the captions, but it would be nicer 
to have an entire "off-limits" section of the document.

hjh