Re: MathJax extension does not work
On Sunday, 10 October 2021 11:14:24 CEST Rudolf Adamkovič wrote:
> I would like to use the "\mathclap" command from the "mathtools" package in
> my Org document. In LaTeX, it works. For HTML, I visited the Org manual [1]
> where I saw the following example:
>
> #+HTML_MATHJAX: cancel.js noErrors.js
>
> with a comment "it loads the two MathJax extensions ‘cancel.js’ and
> ‘noErrors.js’ [132]." (As a side-note, the first link in [132] points to
> 404.) Thus, I put the following into my Org file
>
> #+HTML_MATHJAX: mathtools.js
>
With similar scenario I ended up with:
(and `mathjax` extensions work very well)
```org-mode
#+STARTUP: latexpreview
#+BEGIN_EXPORT html
window.MathJax = {
loader: {
paths: {unicodeMath:
'https://cdn.jsdelivr.net/npm/@amermathsoc/mathjax-unicode-math@1/browser'},
load: ['[tex]/mathtools', '[unicodeMath]/unicode-math.js']},
tex: {packages: {'[+]': ['mathtools', 'unicode-math']}}};
#+END_EXPORT
\begin{array}{ccc}
\underset{\longrightarrow}{\lim}^f(\alpha_1 \circ p_1)
&\overset{\underset{\longrightarrow}{\lim}^f \phi}{\longrightarrow}&
\underset{\longrightarrow}{\lim}^f(\alpha_2 \circ p_2)
\\
{}^{\mathllap{\simeq}}\downarrow
&&
\downarrow^{\mathrlap{\simeq}}
\\
\underset{\longrightarrow}{\lim}^f \alpha_1
&\underset{f}{\longrightarrow}&
\underset{\longrightarrow}{\lim}^f \alpha_2
\end{array}
(diagram above from: [[https://ncatlab.org/nlab/show/ind-object][ind-object in
nLab]])
\(\Bbbc\)
This above uses the other extension, unicode-math.
```
It works when exporting to `latex` and then `pdf`,
it works very well when exporting to `html` via `org-html-export-to-html`,
it almost works with `org-latex-preview`.
Here the relevant part of my `config.org`:
```org-mode
#+begin_src emacs-lisp
(with-eval-after-load 'org
(add-to-list 'org-latex-packages-alist '("" "stmaryrd" t))
(add-to-list 'org-latex-packages-alist '("" "tikz-cd" t))
(add-to-list 'org-latex-packages-alist '("" "amscd" t))
(add-to-list 'org-latex-packages-alist '("" "mathtools" t))
(add-to-list 'org-latex-packages-alist '("" "unicode-math" t))
;; (add-to-list 'org-latex-packages-alist '("" "breqn" t))
(add-to-list 'org-latex-packages-alist '("" "thisisastupidtestfile" t))
(setq org-latex-create-formula-image-program 'dvisvgm)
(setq org-format-latex-options
(plist-put org-format-latex-options :scale 0.80)))
#+end_src
```
`thisisastupidtestfile.sty` contains a few straightforward macro of the sort of
`\newcommand{\calT}{\mathcal{T}}`.
Everything works save `unicode-math` which doesn't work with anything `dvi`.
I use `dvisvgm` because it allows `tikz` to work with `org-latex-preview`.
Cheers,
Chris
> but it seems to do nothing; the exported HTML code not even contain the word
> "mathtools".
>
> A file that demonstrates the problem:
>
> #+LATEX_HEADER: \usepackage{mathtools}
> #+HTML_MATHJAX: mathtools.js
>
> \begin{equation*}
> \begin{aligned}
> \lim_{R\to0}F_1
> =\lim_{R\to0}\frac{2PR}{P+R}
> =\lim_{R\to0}\frac{2\cdot0\cdot{}R}{0+R}
> =\lim_{R\to0}\frac{0}{R},
> =\underbrace{\lim_{R\to0}\frac{0}{1}}_{\mathclap{\text{by L'Hôpital's Rule
> with $\frac{d}{dR}R=1$}}}
> =\lim_{R\to0}0
> =0.
> \end{aligned}
> \end{equation*}
>
> Rudy
>
> [1] https://orgmode.org/manual/Math-formatting-in-HTML-export.html
>
>
Re: MathJax extension does not work
Daniel Fleischer writes:
> […] the mathtools.js library was introduced in mathjax 3.2 but org provided
> version 2.7 […]
> You can just change the "path" in 'org-html-mathjax-options'.
I see. I tried the following and it worked:
(with-eval-after-load 'ox-html
(add-to-list 'org-html-mathjax-options
'(path
"https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js;)))
> Secondly, mathtools is not autoloaded so you need to call it; for
> example you can put it in org using "export" block.
>
> #+begin_src HTML
The "export" blocks did not work for me, but the following did:
(setq-default org-html-head "
window.MathJax = {
loader: {load: ['[tex]/mathtools']},
tex: {packages: {'[+]': ['mathtools']}}
};
")
> After that it worked.
> Not sure why the "#+HTML_MATHJAX: mathtools.js" doesn't do anything.
All the above makes using MathJax extensions impractical. I would have to
include HTML hacks in my Org documents or tie the documents to my Emacs
configuration, if I understand everything. Neither sounds right, and thus I
will avoid using "modern" MathJax until Org switches to it and HTML_MATHJAX
actually works.
P.S. I wonder why Org uses MathJax 2.x when other popular tools, such as
Pandoc, use the latest one.
Thank you for your help!
Rudy
--
"'Contrariwise,' continued Tweedledee, 'if it was so, it might be; and if it
were so, it would be; but as it isn't, it ain't. That's logic.'" -- Lewis
Carroll, Through the Looking Glass
Rudolf Adamkovič
Studenohorská 25
84103 Bratislava
Slovakia
[he/him]
Re: MathJax extension does not work
Daniel Fleischer writes: > Not sure why the "#+HTML_MATHJAX: mathtools.js" doesn't do anything. > Need further investigation. After examining the function 'org-html--build-mathjax-config' in 'ox-html.el' and also looking at the default values of - 'org-html-mathjax-options' - 'org-html-mathjax-template' I don't see any code that loads mathjax extensions; which means the documentation in https://orgmode.org/manual/Math-formatting-in-HTML-export.html is not accurate. That's my understanding. -- Daniel Fleischer
Re: MathJax extension does not work
Rudolf Adamkovič writes:
> I would like to use the "\mathclap" command from the "mathtools" package in
> my Org document. In LaTeX, it works. For
Hi, there are 2 problems: first the mathtools.js library was introduced in
mathjax 3.2 but org provided version 2.7 as can be seen in the HTML
#+begin_src html
https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-AMS_HTML";>
#+end_src
One can use the newer mathjax by replacing this with
#+begin_src html
https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js";>
#+end_src
as seen in https://docs.mathjax.org/en/latest/web/start.html.
You can just change the "path" in 'org-html-mathjax-options'.
Secondly, mathtools is not autoloaded so you need to call it; for
example you can put it in org using "export" block.
#+begin_src HTML
window.MathJax = {
loader: {load: ['[tex]/mathtools']},
tex: {packages: {'[+]': ['mathtools']}}
};
#+end_src
After that it worked.
Not sure why the "#+HTML_MATHJAX: mathtools.js" doesn't do anything.
Need further investigation.
--
Daniel Fleischer
MathJax extension does not work
I would like to use the "\mathclap" command from the "mathtools" package in my
Org document. In LaTeX, it works. For HTML, I visited the Org manual [1] where
I saw the following example:
#+HTML_MATHJAX: cancel.js noErrors.js
with a comment "it loads the two MathJax extensions ‘cancel.js’ and
‘noErrors.js’ [132]." (As a side-note, the first link in [132] points to 404.)
Thus, I put the following into my Org file
#+HTML_MATHJAX: mathtools.js
but it seems to do nothing; the exported HTML code not even contain the word
"mathtools".
A file that demonstrates the problem:
#+LATEX_HEADER: \usepackage{mathtools}
#+HTML_MATHJAX: mathtools.js
\begin{equation*}
\begin{aligned}
\lim_{R\to0}F_1
=\lim_{R\to0}\frac{2PR}{P+R}
=\lim_{R\to0}\frac{2\cdot0\cdot{}R}{0+R}
=\lim_{R\to0}\frac{0}{R},
=\underbrace{\lim_{R\to0}\frac{0}{1}}_{\mathclap{\text{by L'Hôpital's Rule with
$\frac{d}{dR}R=1$}}}
=\lim_{R\to0}0
=0.
\end{aligned}
\end{equation*}
Rudy
[1] https://orgmode.org/manual/Math-formatting-in-HTML-export.html
--
"Logic is a science of the necessary laws of thought, without which no
employment of the understanding and the reason takes place." -- Immanuel Kant,
1785
Rudolf Adamkovič
Studenohorská 25
84103 Bratislava
Slovakia
[he/him]
