A one-line org code block

Question

I want to have python snippets in org thus:

#+begin_PYT
def foo(x):
# Some python code
#+end_PYT

where PYT is a latex environment for python code using (say) listings.

The problem is that while org does translate #+begin_PYT to \begin{PYT} it modifies (transcodes??) the body; so for example the python [[a]] becomes an org link a!

As a result using vanilla org I have to do

#+begin_export latex
\begin{PYT}
def foo(x):
# Some python code
\end{PYT}
#+end_export

With dozens of small snippets those two extra lines are quite an overhead

So options (I can think of!)

1. There should be a way in vanilla org to tell org that a PYT block should be left alone (not transcoded)
   Or
2. Using org-special-blocks-extra there should be a way but there is very scant documentation.
3. Write a 'pre-transcode' filter that transforms #+begin_PYT to "#+begin_export latex\n\\begin{PYT}"

Can someone help out with any of these (or some other!) way to do this?

Answer 1

The answer to your query is in the docstring of org-latex-custom-lang-environments.

Specifically, you want your ox-latex setup in such a way that when the exporter hits org-latex-src-block, the code takes this path.

1. Create somefile.org with following contents

#+begin_src PYT
  def foo(x):
  # Some python code
#+end_src

2. emacs -Q
3. Copy the following snippet to *scratch* and do M-x eval-buffer

(define-derived-mode PYT-mode prog-mode "PYT"
  "Major mode for PYT files.")

(custom-set-variables
  '(org-latex-custom-lang-environments '((PYT "PYT")))
  '(org-latex-listings 'minted))

4. C-x C-f somefile.org, followed with C-c C-e C-b l L will give you this

\begin{PYT}
def foo(x):
# Some python code
\end{PYT}