Eric S Fraga <esfli...@gmail.com> writes:
> On Monday, 30 Jul 2018 at 12:43, Jarmo Hurri wrote:
>> In my emacs config file I now have:
>>
>> (plist-put org-format-latex-options :foreground "white")
>> (plist-put org-format-latex-options :scale 2)
>
> This works for me but in the context that I also change the background
> to black (which does not necessarily match my Emacs background...). Try
> that just to see? It may be a LaTeX issue.
This seems to be a compatibility issue with the forest package in
Latex. The problem is demonstrated and explained in the org file
below. I don't know yet what the solution is.
Jarmo
# ---------------------------------------------------------------------
#+LATEX_HEADER: \usepackage{forest}
* \LaTeX{} fragments: package ~forest~ confuses foreground color setting
Interestingly enough, the foreground color set by
#+BEGIN_SRC elisp
(plist-put org-format-latex-options :foreground "White")
#+END_SRC
does /not/ change the foreground color in this simple invariant
equation \[ ab^n = ab\cdot b^{n-1} \] if ~usepackage{forest}~ is
included in \LaTeX{} header. When package ~forest~ is not used,
setting the color works just fine.
To make things a bit more complicated, after commenting or
uncommenting the ~LATEX_HEADER~ line, you need to remove the
contents of directory ~ltximg~ in the working directory to see the
difference, because the system caches the generated images of the
equations there.
