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## Re: Suggestion : Option enabling LaTeX blocks to non-latex exporters.

 From: Emmanuel Charpentier Subject: Re: Suggestion : Option enabling LaTeX blocks to non-latex exporters. Date: Sun, 18 Jul 2021 19:10:27 +0200 User-agent: Evolution 3.38.3-1

Well... this :

#+begin_src sage :exports both :results output raw
  a, b = var("a, b");
  print("\\begin{equation*}\n%s\n\\end{equation*}"%latex(sin(a+b)==sin(a+b).trig_expand()))
  # print("\$$%s\n\$$"%latex(sin(a+b)==sin(a+b).trig_expand()))
#+end_src

#+RESULTS:
\begin{equation*}
\sin\left(a + b\right) = \cos\left(b\right) \sin\left(a\right) + \cos\left(a\right) \sin\left(b\right)
\end{equation*}

will get you the expected result, in ODT as in PDF. But this might be happenstance : the slightly simpler

#+begin_src sage :exports both :results output raw
  a, b = var("a, b");
 #  print("\\begin{equation*}\n%s\n\\end{equation*}"%latex(sin(a+b)==sin(a+b).trig_expand()))
  print("\$$%s\n\$$"%latex(sin(a+b)==sin(a+b).trig_expand()))
#+end_src

#+RESULTS:
$$\sin\left(a + b\right) = \cos\left(b\right) \sin\left(a\right) + \cos\left(a\right) \sin\left(b\right) $$

will print the expected results *twice* (in ODT and in PDF).

The more straightforward)

#+begin_src sage :exports both :results value latex
  var("a, b")
  latex(cos(a+b)==cos(a+b).trig_expand())
#+end_src

#+RESULTS:
#+begin_export latex
\cos\left(a + b\right) = \cos\left(a\right) \cos\left(b\right) - \sin\left(a\right) \sin\left(b\right)
#+end_export

gives the expected result in PDF (i. e. results *once*,whether the code has #+results: or not), but not in ODT.

The "Kitchin's workaround" :

#+begin_src sage :exports both :results drawer
  print("\$$\\displaystyle{%s}\$$"%latex(tan(a+b)==tan(a+b).trig_expand()))
#+end_src

#+RESULTS:
:results:
$$\displaystyle{\tan\left(a + b\right) = -\frac{\tan\left(a\right) + \tan\left(b\right)}{\tan\left(a\right) \tan\left(b\right) - 1}}$$
:end:

works as (un)expected, but is still less straightforward. I'd rather have a documented, understood way to export LaTeX snippets/ blocks marked as such explicitly exported to ODT...

Hope this is clearer,

--
Emmanuel Charpentier

Le dimanche 18 juillet 2021 à 22:25 +0800, Timothy a écrit :

Hi Emmanuel,

It may interest you to hear that I submitted a patch a month or two ago
(which was merged) to support LaTeX environments as results.

That means that this is now possible:

#+begin_src something
...stuff...
#+end_src

#+results:
\begin{equation*}
some latex which will be exported nicely
\end{equation*}

All the best,

Timothy