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Re: [O] Bug: When exporting to PDF an Org file where multiple footnotes

From: Kaushal Modi
Subject: Re: [O] Bug: When exporting to PDF an Org file where multiple footnotes share the same definition, only the first footnote is clickable [8.3.4 (8.3.4-39-ge0acd8-elpaplus @ /home/jorge/.emacs.d/elpa/org-plus-contrib-20160418/)]
Date: Wed, 10 Aug 2016 21:09:54 +0000

Hi guys,

Looks like I just reported the exact same bug few minutes back.

@Rasmus: Are you still working on committing the fix for this?



On Mon, May 23, 2016 at 5:42 PM Nicolas Goaziou <address@hidden> wrote:

Rasmus <address@hidden> writes:

> With the attached patch ox-latex seems to behave in this way.

Thank you. Some comments follow.

> Though perhaps there’s a more efficient way to get the first
> footnote-reference to a given definition than trawling through with
> org-export--footnote-reference-map.

Couldn't you refer to the definition instead of the first reference ?
There is a function grabbing it and it is unique for a given label.
Also, not that `org-export-get-footnote-definition' doesn't return the
definition itself, only its contents. Therefore the reference are
different and there is no possible ambiguity.

> Nicolas, where is the info plist documented or defined/populated?

It is documented at
<http://orgmode.org/worg/dev/org-export-reference.html>. However, caches
used for memoization are not referenced.

> +      ;; Use \footnotemark if the footnote has already been defined.

The comment no longer seems accurate.

> +      ((not (org-export-footnote-first-reference-p footnote-reference info))
> +       (format "\\textsuperscript{\\ref{%s}}"
> +            (org-latex--label
> +             (catch 'exit
> +               (org-export--footnote-reference-map
> +                (lambda (f)
> +                  (let ((l (org-element-property :label f)))
> +                    (when (and l label (string= label l))
> +                      (throw 'exit f))))
> +                (plist-get info :parse-tree) info))
> +             info t)))

See above.

> +      ;; Use \footnotemark if reference is within another footnote
> +      ;; reference, footnote definition or table cell.
> +      ((org-element-lineage footnote-reference
> +                         '(footnote-reference footnote-definition table-cell))
> +       "\\footnotemark")
> +      ;; Otherwise, define it with \footnote command.
> +      (t
> +       (let ((def (org-export-get-footnote-definition footnote-reference info)))
> +      (concat
> +       (format "\\footnote{%s%s}" (org-trim (org-export-data def info))
> +               (if (catch 'exit
> +                     (org-export--footnote-reference-map
> +                      (lambda (f)
> +                        (let ((l (org-element-property :label f)))
> +                          (when (and l label
> +                                     (not (eq f footnote-reference))
> +                                     (string= label l))
> +                            (throw 'exit t))))
> +                      (plist-get info :parse-tree) info))
> +                   (org-latex--label footnote-reference info t t)
> +                 ""))

I'm not sure to understand the logic here. You seem to add a label to
all references sharing a given label but the first one. Intuitively,
I think it should be the opposite.

Besides, in this branch of the `cond', all footnote references are the
first for their their label.

Wouldn't it be sufficient to use

  (format "\\footnote{%s%s}"
          (org-trim (org-export-data def info))
          (org-latex--label def info t t))



Nicolas Goaziou


Kaushal Modi

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