Ignore, skip, omit headline when exporting to LaTeX

[edgar]

Firstly, do tell me if I am breaking the nettiquete.

I found someone asking online how to ignore a headline when exporting  
to LaTeX. This e-mail is to avoid creating an account on that forum  
and to provide a solution.

(require 'ox-extra)

  (defun org-export-ignore-headlines-latex (data backend info)
    "Hack of `org-export-ignore-headlines' for LaTeX: add a  
conditional for the latex backend and replace 'ignore' with 'ignoreltx'"
    (when (org-export-derived-backend-p backend 'latex)
      (org-element-map data 'headline
        (lambda (object)
          (when (member "ignoreltx" (org-element-property :tags object))
            (let ((level-top (org-element-property :level object))
                  level-diff)
              (mapc (lambda (el)
                      ;; recursively promote all nested headlines
                      (org-element-map el 'headline
                        (lambda (el)
                          (when (equal 'headline (org-element-type el))
                            (unless level-diff
                              (setq level-diff (-  
(org-element-property :level el)
                                                  level-top)))
                            (org-element-put-property
                             el
                             :level (- (org-element-property :level el)
                                                                 
level-diff)))))
                      ;; insert back into parse tree
                      (org-element-insert-before el object))
                    (org-element-contents object)))
            (org-element-extract-element object)))
        info nil)
      data))

  (push '(ignore-latex-headlines
          org-export-ignore-headlines-latex
          org-export-filter-parse-tree-functions)
        ox-extras)
  (ox-extras-activate '(latex-header-blocks ignore-headlines  
ignore-latex-headlines))


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