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From: Nicolas Goaziou <mail@nicolasgoaziou.fr>
To: rey-coyrehourcq <sebastien.rey-coyrehourcq@univ-rouen.fr>
Cc: emacs-orgmode@gnu.org
Subject: Re: How to reinject custom function into derived backend which doesn't implement it, ex : footnote in ox-slimhtml backend.
Date: Tue, 27 Apr 2021 23:25:09 +0200	[thread overview]
Message-ID: <87sg3bifnu.fsf@nicolasgoaziou.fr> (raw)
In-Reply-To: <2d0b1df3720133e089e4e45af09f5faf1c21f4ac.camel@univ-rouen.fr> (rey-coyrehourcq's message of "Fri, 02 Oct 2020 22:26:43 +0200")


rey-coyrehourcq <sebastien.rey-coyrehourcq@univ-rouen.fr> writes:

> Actually footnotes are not defined in ox-slimhtml, so as i read in the org documentation [1] ), 
> i try to add this capacity by simply calling vanilla ox-html function org-html-footnote-reference into translate-alist :
> (org-export-define-derived-backend 'ox-slimhtml-publish-to-html 'slimhtml

The first argument of `org-export-define-derived-backend' should be the
name of the new back-end, as a symbol, not the function used to publish.

  (org-export-define-derived-backend 'slimhtml-improved 'slimhtml

>   :translate-alist '((bold . ox-slimhtml-bold)
>                     (footnote-reference . org-html-footnote-reference)
>                      (verse-block . org-html-
> verse-block)
>                      (special-block . org-html-special-block)))
> Using the vanilla ox-html export function, everything is awesome and footnote appear in my html, normal.
> :publishing-function org-blog-publish-to-html 
> But if i switch to ":publishing-function ox-slimhtml-publish-to-html"
> the function 

You need to define your own publishing function with the help of
`org-publish-org-to' and make it use `slimhtml-improved. Here you're
re-using plain slimhtml, without your additions. E.g.,

  (defun ox-slimhtml-improved-publish-to-html (plist filename pub-dir)
    "Publish an org file to html.
  PLIST is the property list for the given project.  FILENAME
  is the filename of the Org file to be published.  PUB-DIR is
  the publishing directory.
  Return output file name."
    (let ((html-extension (or (plist-get plist :html-extension) org-html-extension)))
      (org-publish-org-to 'slimhtml-improved
                          (if (and html-extension (not (string= "" html-extension)))
                              (concat "." html-extension) "")

Then you can set :publishing-function to `org-slimhtml-publish-to-html'.

> There is something i don't understand in the processing of "translate-alist", so perhaps if the derived backend doesn't
> implement a footnote-reference function, i cannot extend it ?

You should be able to extend it.

Nicolas Goaziou

      parent reply	other threads:[~2021-04-27 21:26 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-02 20:26 rey-coyrehourcq
2021-04-27 20:42 ` Bastien
2021-04-27 21:25 ` Nicolas Goaziou [this message]

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