Fwd: Re: How to export LaTeX amsmath align bmatrix to ODT?

[edgar@openmail.cc]

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I forgot to send this to the list. Sorry.

-------- Original Message --------
Subject: Re: How to export LaTeX amsmath align bmatrix to ODT?
Date: 2017-06-15 22:57
 From: edgar@openmail.cc
To: Nicolas Goaziou <mail@nicolasgoaziou.fr>

Hello Nicolas,

Thank you for your help. My comments are under each block:

On 2017-06-14 14:10, Nicolas Goaziou wrote:
> Hello,
> 
> 
>> On 2017-06-10 05:13, edgar wrote:
>>> On 2017-06-10 04:54, edgar wrote:
>>>> Hello,
>>>> 
>>>> I have been making progress with my export procedure to ODT. I would
>>>> like to know if someone knows how to export the following LaTeX 
>>>> block
>>>> to ODT correctly:
>>>> 
>>>> \[\begin{align} \begin{bmatrix} a = 1 & b=2 \\ c=3 & d = 4
>>>> \end{bmatrix} \end{align}\]
>>>> https://www.vfemail.net/roundcube/?_task=mail&_action=compose&_id=289067995593b7fd683a1f#
>>>> \[\begin{align}  a = & 1 + 2 + 3 + 4 \\ c = &  4 \end{bmatrix}
>>>> \end{align}\]
> 
> I'm a bit lost here. In particular, I'm able to export the example 
> above
> out-of-the-box, provided I add "#+options: tex:dvipng" or some such in
> the document.
> 

Yes, indeed, without modifying any variable, the code exports correctly, 
but I had modified org-preview-latex-process-alist to include my 
symbols.tex file like this:

On 2017-06-05 07:00, edgar wrote:

     I managed to get the special symbols by

     1. M-x customize-variable org-preview-latex-process-alist
     2. Doing [Ins] into the dvipng (or imagemagick) section
     3. typing :latex-header in the Key: field
     4. typing "\\input{./symbols.tex}" in the Value: field

After I did that, some symbols would export correctly, but others would 
not. I was not importing any LaTeX packages within that file. I use this 
file to export PDF (through LaTeX: C-c C-e l p). One of the things that 
did not work was the matrix environment. I thought that it was better to 
start a new question regarding the matrix, because I thought it was 
independent of the symbols.

This is related to the following:

>> For the record, I had modified org-preview-latex-process-alist to get
>> custom symbols, and this got in the way of the LaTeX bmatrix
>> environment (I don't know how; I was loading a file with
>> with :latex-header as "\\input{preamble.tex}").
>> 
>> My partial answer (it is partial, because the \tensor preview renders
>> in a different color than the rest of symbols): Instead of modifying
>> org-preview-latex-process-alist, the answer I modified
>> org-format-tex-header. I added the following at the end of M-x
>> customize-variable org-format-tex-header (I leave it here for
>> posterity; I added some symbols: tensor, derivative, vector, Roman
>> numeral, etc.)
> 
> I don't think you need to modify `org-format-latex-header' at all. 
> There
> is `org-latex-packages-alist' for that.
I don't really know how to modify org-latex-packages-alist to have a 
latex command like this in my tex file:

\newcommmand{\mysymbol}[1]{\mathrm{my_{#1}}}

I do have a bunch of packages with custom options over there :P !

> 
> So, is there a bug in the ODT export back-end? If so, could you post an
> ECM? Loads of LaTeX code doesn't help understanding the issue.
> 
I think that the only bug is that I don't know how to use it very well 
;) . I don't know what a ECM is :S , sorry. I typed ECM emacs on a web 
search engine, and only got ECB. Is it the same? If you are willing to 
tell me how to get one, I'll do my best.

Right now, I am having a glitch on the screen. I get some of my custom 
symbols in black (all the others are in light gray) on a black 
background (my screen has a black background; see attached picture: 
there is an I with two tildes underneath next to the p). I would like to 
know if you or someone else can help me to get a light gray on that 
symbol too. I suspect that it may have to do with the stackengine 
(LaTeX) package, because all of my other symbols are doing well. This is 
the snippet of code that I have in org-format-latex-header to define the 
\tensor symbol

\newcommand{\tensor}[1]{
   
\stackunder[0pt]{\stackunder[1pt]{#1}{\scriptscriptstyle\sim}}{\scriptscriptstyle\sim}}

I also opened a new emacs with -Q, did a (require 'org), yanked my 
configuration of org-format-latex-header and created a new Org file. 
Then, changed the theme to a dark one and I typed $\tensor{F}$ $a$. For 
the $\tensor{F}$ I get a white square with a black font face. For the 
$a$ I get the same set of colors as the theme (dark background, 
light-gray font face).

Thank you a lot for you time!


Edgar

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