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* Bug: LaTeX: inline maths expression in \textrm is not fully supported
@ 2020-12-13  1:30 Firmin Martin
2020-12-13 10:24  Eric S Fraga
0 siblings, 1 reply; 3+ messages in thread
From: Firmin Martin @ 2020-12-13  1:30 UTC (permalink / raw)
To: emacs-orgmode

Sometimes, we want to nest inline maths expression in \textrm to
handle spaces easily and avoid repetition.

Examples:

1. $A = \{n : \textrm{$n$odd in$X$}\}$
2. $A = \{n : \textrm{$$n$$ odd in $$X$$}\}$
3. $$A = \{n : \textrm{\(n$$ odd in $$X$$}\}\)
4. $$A = \{n : \textrm{n odd in X}\}$$

are all equivalent to

- $A = \{n : n \textrm{ odd in } X}\}$

But Org mode exports them in LaTeX as

\begin{enumerate}
\item \$A =$\backslash${n : \textrm{$n$odd in$X$}$\backslash$}\$
\item $$A = \{n : \textrm{\(n$$ odd in $$X$$}\}\)
\item $$A = \{n : \textrm{\(n$$ odd in $$X$$\}$\backslash$}$\backslash$)
\item $$A = \{n : \textrm{n odd in X}\}$$
\end{enumerate}

Namely, only cases 2. and 4., where nested maths delimiters are different
than the outer-most maths delimiters, are correctly exported.
On the other hand, Cases 1. and 3. introduced extra $\backslash$.

Interestingly, display style maths expressions are correctly exported.

5. $$A = \{n : \textrm{n odd in X}\}$$
6. $$A = \{n : \textrm{$$n$$ odd in $$X$$}\}$$
7. $A = \{n : \textrm{$$n$$ odd in $$X$$}\}$
8. $A = \{n : \textrm{n odd in X}\}$

exports to

\begin{enumerate}
\item $$A = \{n : \textrm{n odd in X}\}$$
\item $$A = \{n : \textrm{$$n$$ odd in $$X$$}\}$$
\item $A = \{n : \textrm{$$n$$ odd in $$X$$}\}$
\item $A = \{n : \textrm{n odd in X}\}$
\end{enumerate}

without extra $\backslash$.

Best,

Firmin

Emacs  : GNU Emacs 28.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.20, cairo version 1.16.0) of 2020-10-16
Package: Org mode version 9.4 (9.4-55-g706ba9-elpaplus @ ~/.emacs.d/elpa/org-20201207/)

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: Bug: LaTeX: inline maths expression in \textrm is not fully supported
2020-12-13  1:30 Bug: LaTeX: inline maths expression in \textrm is not fully supported Firmin Martin
@ 2020-12-13 10:24  Eric S Fraga
2020-12-14  6:33    Firmin Martin
0 siblings, 1 reply; 3+ messages in thread
From: Eric S Fraga @ 2020-12-13 10:24 UTC (permalink / raw)
To: Firmin Martin; +Cc: emacs-orgmode

On Sunday, 13 Dec 2020 at 02:30, Firmin Martin wrote:
> Sometimes, we want to nest inline maths expression in \textrm to
> handle spaces easily and avoid repetition.
>
> Examples:
>
> 1. $A = \{n : \textrm{$n$odd in$X$}\}$

I think you may be expecting too much of org's simple inline LaTeX
parser.  As soon as you have complex LaTeX, it's best to be explicit
about it being LaTeX, e.g.:

1. @@latex:$A = \{n : \textrm{$n$odd in$X$}\}$@@

HTH,
eric

--
: Eric S Fraga via Emacs 28.0.50, Org release_9.4-160-g7c8dce

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: Bug: LaTeX: inline maths expression in \textrm is not fully supported
2020-12-13 10:24  Eric S Fraga
@ 2020-12-14  6:33    Firmin Martin
0 siblings, 0 replies; 3+ messages in thread
From: Firmin Martin @ 2020-12-14  6:33 UTC (permalink / raw)
To: Eric S Fraga; +Cc: emacs-orgmode

> I think you may be expecting too much of org's simple inline LaTeX
> parser.  As soon as you have complex LaTeX, it's best to be explicit
> about it being LaTeX, e.g.:
>
> 1. @@latex:$A = \{n : \textrm{$n$odd in$X$}\}$@@

Thank you for the advice! This does work for LaTeX export, but if one
would also want to export in HTML, the LaTeX expression is lost. I will
stay with the "multiple \textrm" solution for now.

Best,

Firmin

Eric S Fraga <e.fraga@ucl.ac.uk> writes:

> On Sunday, 13 Dec 2020 at 02:30, Firmin Martin wrote:
>> Sometimes, we want to nest inline maths expression in \textrm to
>> handle spaces easily and avoid repetition.
>>
>> Examples:
>>
>> 1. $A = \{n : \textrm{$n$odd in$X$}\}$
>
> I think you may be expecting too much of org's simple inline LaTeX
> parser.  As soon as you have complex LaTeX, it's best to be explicit
> about it being LaTeX, e.g.:
>
> 1. @@latex:$A = \{n : \textrm{$n$odd in$X$}\}$@@
>
> HTH,
> eric
>
> --
> : Eric S Fraga via Emacs 28.0.50, Org release_9.4-160-g7c8dce

^ permalink raw reply	[flat|nested] 3+ messages in thread

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2020-12-13 10:24  Eric S Fraga

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