[O] org-preview-latex-fragment ignores \includes in the LATEX_HEADER

[Stefan Otte]

Hey,

I'm using orgmode with lots of LaTeX for equations. A typical document
start with

  #+TITLE: Some Title
  #+LaTeX_HEADER: \include{commands}

commands.tex contains commands like:
  \newcommand{\RRR}{{\mathbb{R}}}

The pdf export works flawlessly, however `org-preview-latex-fragment`
seems to ignore "\include{commands}", i.e., equations that use
commands that are defined in commands.tex are rendered as blank/empty
image.

Is it the intended behavior that `org-preview-latex-fragment` ignores
"\include", is it a bug, or is there a better way to do it?


Best,
 Stefan