From mboxrd@z Thu Jan  1 00:00:00 1970
From: Carlos Pita <carlosjosepita@gmail.com>
Subject: Re: Bug: latex blocks preview inline [9.2.1
 (release_9.2.1-217-g232160 )]
Date: Wed, 13 Feb 2019 09:21:24 -0300
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To: Joao Cortes <joaooneillcortes@outlook.pt>
Cc: "emacs-orgmode@gnu.org" <emacs-orgmode@gnu.org>

Hi,

>       #+HEADER: :file latex.svg
>       #+HEADER: :results drawer
>       #+BEGIN_SRC latex

I think you're missing some headers to get it working. For example, I
use the following defaults to preview/export images generated with
tikz to html/markdown documents:

      org-babel-default-header-args:latex '((:results . "file raw")
                                            (:exports . "results")
                                            (:cache . "yes")
                                            (:headers . ("\\usepackage{tikz}"))
                                            (:imagemagick . "yes")
                                            (:fit . "yes")))

Try adding them to you src block or to you config. :cache and :fit
aren't necessary for your goal but desirable anyway. The others I
think you will need them.

Of course, if you're embedding your tikz environment in a document
exported to latex, simply embed the fragment (that is, without the src
block) and preview it with C-c C-x C-l.

> When using the org-plus-contrib package from the org archive
> (9.2.1-8-g1b1797-elpaplus),

I don't know what is this, but could it be shipped with different
babel defaults?

Best regards
--
Carlos