Avoid \printbibliography being swallowed by Org-mode headings

Question

When using Org-mode and its LaTeX export BibTeX or Biblatex is often used to handle references. In that case the LaTeX command \\printbibliography is often included

Answer 1

The following is lightly tested but works for me using tab and shift-tab to hide and display things. Those are the only hiding and showing commands that I use, so if you use other commands they may have to be advised or fixed in some other way.

You can of course change org-footer-regexp to anything you want. I was hoping to not have to use any advice, but without advising org-end-of-subtree the last heading never cycles with tab because it thinks it's not hidden, so it hides it and then org-cycle-hook unhides it. It calls org-end-of-subtree before running org-pre-cycle-hook so that's not an option either.

(defvar org-footer-regexp "^\\\\printbibliography\\[.*\\]$"
  "Regexp to match the whole line of the first line of the footer which should always be shown.")

(defun show-org-footer (&rest ignore)
  (save-excursion
    (goto-char (point-max))
    (when (re-search-backward org-footer-regexp nil t)
      (outline-flag-region (1- (point)) (point-max) nil))))

(add-hook 'org-cycle-hook 'show-org-footer)
(add-hook 'org-occur-hook 'show-org-footer)

(defadvice org-end-of-subtree (after always-show-org-footer
                                     ()
                                     activate)
  (when (>= (point) (1- (point-max)))
    (re-search-backward org-footer-regexp nil t)
    (setq ad-return-value (point))))