I believe you are seeing org's escaping at play. It puts a comma in front
of the leading *. It must think that it is a heading in org-syntax, and so
it escapes it to avoid some issues.

I think here it is a bug since that is not a heading. can you use some
other leading character? I don't think the * have any significance in latex.

John

-----------------------------------
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu



On Fri, May 31, 2019 at 9:11 AM Uwe Brauer <oub@mat.ucm.es> wrote:

>
>
> Hi
>
> I am running Ubuntu 16.06, matlab 2018b and  I am using the python
> kernel to use matlab from within org mode
>
>
> Thanks to John Kitchin, I have the following setting
>
> * Lisp setting
> #+BEGIN_SRC emacs-lisp
> (setq org-confirm-babel-evaluate nil)   ;don't prompt me to confirm
> everytime I want to evaluate a block
>
> ;;; display/update images in the buffer after I evaluate
> (add-hook 'org-babel-after-execute-hook 'org-display-inline-images 'append)
>
>
> (add-to-list 'org-src-lang-modes '("matlab" . matlab))
> (setq python-shell-interpreter "python3")
>
> ;; set default headers for convenience
> (setq org-babel-default-header-args:matlab
>       '((:results . "output replace")
>         (:session . "matlab")
>         (:kernel . "matlab")
>         (:exports . "code")
>         (:cache .   "no")
>         (:noweb . "no")
>         (:hlines . "no")
>         (:tangle . "no")))
>
> (defalias 'org-babel-execute:matlab 'org-babel-execute:ipython)
> (defalias 'org-babel-prep-session:matlab 'org-babel-prep-session:ipython)
> (defalias 'org-babel-matlab-initiate-session
> 'org-babel-ipython-initiate-session)
> #+END_SRC
>
>
> * The problem
>
> When I run
>
> #+begin_src matlab :results output latex :exports results  :eval
> never-export
> disp('*Step 3:*')
> disp('*Step 3:*  Calculate this')
> #+end_src
>
>
> On obtain
> #+RESULTS:
> #+begin_export latex
> ,*Step 3:*
> ,*Step 3:*  Calculate this
> #+end_export
>
>
> Instead of
>
> #+begin_export latex
> *Step 3:*
> *Step 3:*  Calculate this
> #+end_export
>
>
> Does anybody have an idea what is wrong there?
>
> Uwe Brauer
>
>
>