Re: Exporting user labels to non-latex backends

[Stefano Ghirlanda <dr.ghirlanda@gmail.com>]

Thanks! I was just under the impression that #+name: was the preferred
way of labeling things and I was surprised it did not work as I
expected on some backends. I was surprised to see that

#+name: eq:x

gives a different result from

\label{eq:x}

as I understood the two things to be equivalent.

Thanks for the clarification,
Stefano

On Fri, May 17, 2024 at 6:43 AM Ihor Radchenko <yantar92@posteo.net> wrote:
>
> Stefano Ghirlanda <dr.ghirlanda@gmail.com> writes:
>
> > There may be an issue with using #+name: labels when exporting to
> > non-latex backends. For example:
> > ...
> > #+name: eq:x
> > \begin{equation}
> >    x = 1
> > \end{equation}
> >
> > cref:eq:x
> > ---
> >
> > exports with a mix of org labels and user labels:
> >
> > ---
> > \begin{equation}
> >   \label{orgf29908c}
> >   x = 1
> > \end{equation}
> >
> > equation \ref{eq:x}
> > ---
> >
> > This does not affect latex export because one can set
> > org-latex-prefer-user-labels, but most other backends do not seem to
> > have this setting. I think there is one for HTML but I could not find
> > one for markdown. Would it be useful to have a global setting for all
> > backends? Or, is there a way to fix this with the current code base?
>
> AFAIK, there is nothing to fix - the current behavior is intentional:
>
> Commit 981f25031dd17
> * lisp/ox-md.el (org-md-latex-environment, org-md-latex-fragment):
> These two new filters wrap LaTeX maths in $ / $$ TeX-style notation.
> While ox-md endeavours to adhere to the original Markdown specification,
> and not any particular variant, the original specification does not deal
> with LaTeX fragments at all, and so this change does not reduce how
> faithfully the original specification is followed.
> There is a major upside to this though. Of the many Markdown variants
> that have emerged, those that support LaTeX very often exclusively
> support TeX style notation.  This change thus improves the utility of
> the Markdown export for many use cases, and deviates no more from the
> original specification that the current method.
>
> Please, provide more context about the problem you are trying to solve.
>
> --
> Ihor Radchenko // yantar92,
> Org mode contributor,
> Learn more about Org mode at <https://orgmode.org/>.
> Support Org development at <https://liberapay.com/org-mode>,
> or support my work at <https://liberapay.com/yantar92>



-- 
Stefano Ghirlanda
CTO, DataWorks - https://dataworks.consulting
Guest Professor - Stockholm University Centre for Cultural Evolution