Where have org-latex-classes gone? And Ignore heading title but export contents

Where have org-latex-classes gone? And Ignore heading title but export contents

[Eduardo V.]

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I'm getting an error trying to add my class to org-mode

(add-to-list 'org-latex-classes ieeetran-class)
Symbol's value as variable is void: org-latex-classes

What is the org-mode 9 way of adding classes?

Also, on org-mode 8 i added this hook to remove headlines and it worked
perfectly, now it complains about 'tree' being a void variable too

(defun org-remove-headlines (backend)
  "Remove headlines with :no_title: tag."
  (org-map-entries (lambda () (let ((beg (point)))
                                (outline-next-visible-heading 1)
                                (backward-char)
                                (delete-region beg (point))))
                   "no_export" tree)
  (org-map-entries (lambda () (delete-region (point-at-bol) (point-at-eol)))
                   "no_title"))

(add-hook 'org-export-before-processing-hook #'org-remove-headlines)

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Re: Where have org-latex-classes gone? And Ignore heading title but export contents

[Nick Dokos]

"Eduardo V." <lalohao@gmail.com> writes:

> I'm getting an error trying to add my class to org-mode
>
> (add-to-list 'org-latex-classes ieeetran-class)
> Symbol's value as variable is void: org-latex-classes
>
> What is the org-mode 9 way of adding classes?
>

It's still org-latex-classes afaik - you are trying to add the class
before ox-latex is loaded perhaps?

> Also, on org-mode 8 i added this hook to remove headlines and it worked perfectly, now it complains
> about 'tree' being a void variable too
>
> (defun org-remove-headlines (backend)
>   "Remove headlines with :no_title: tag."
>   (org-map-entries (lambda () (let ((beg (point)))
>                                 (outline-next-visible-heading 1)
>                                 (backward-char)
>                                 (delete-region beg (point))))
>                    "no_export" tree)
>   (org-map-entries (lambda () (delete-region (point-at-bol) (point-at-eol)))
>                    "no_title"))
>
> (add-hook 'org-export-before-processing-hook #'org-remove-headlines)
>

Untested, but afaik, it should be a symbol, so it needs a quote:

'tree

Not sure why it would work in org 8 - afaict, it should fail in exactly
the same way, unless tree was bound globally.

-- 
Nick