I have done soemthing like this before:

(setq org-latex-minted-options
           '(("frame" "lines")
             ("fontsize" "\\scriptsize")))

;; custom code block format to indicate input variables
(defun my-src-block (src-block contents info)
  (cond
   ((eq (elt (plist-get info :back-end) 2) 'latex)
    (concat
     "\\begin{tcolorbox}
"
     (format
      (concat
       (when (org-element-property :name src-block)
(format "src block name: %s\\\\" (org-element-property :name src-block)))
       "language: %s")
      (org-element-property :language src-block))
     (org-latex-src-block src-block contents info)
"
\\end{tcolorbox}"))))

;; custom exporter
(org-export-define-derived-backend 'my-latex 'latex
  :translate-alist '((src-block . my-src-block)))

(org-export-to-file 'my-latex "manuscript.tex" nil nil nil nil nil)
(ox-manuscript-latex-pdf-process "manuscript.tex")

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 Thu, Apr 5, 2018 at 7:01 PM, stardiviner <numbchild@gmail.com> wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
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> By default org-mode export to PDF file does not have language indicator on
> code block.
> How to setup to add a language string on exported PDF code block like this
> HTML https://stardiviner.github.io/ ?
> - --
> [ stardiviner ] don't need to convince with trends.
>        Blog: https://stardiviner.github.io/
>        IRC(freenode): stardiviner
>        GPG: F09F650D7D674819892591401B5DF1C95AE89AC3
>
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