*Org Src gtk.el

  (setq org-latex-classes
                  `(("memoir-article"
                          (,@ (concat  "\\documentclass[11pt,article,oneside,a4paper,x11names]{memoir}\n"
                                       "% -- DEFAULT PACKAGES \n[DEFAULT-PACKAGES]\n"
                                       "% -- PACKAGES \n[PACKAGES]\n"
                                       "% -- EXTRA \n[EXTRA]\n"
                                       "\\counterwithout{section}{chapter}\n"
                                       ))
                          ("\\section{%s}" . "\\section*{%s}")
                          ("\\subsection{%s}" . "\\subsection*{%s}")
                          ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
                          ("\\paragraph{%s}" . "\\paragraph*{%s}")
                          ("\\subparagraph{%s}" . "\\subparagraph*{%s}"))
                    ("memoir"
                          (,@ (concat  "\\documentclass[11pt,oneside,a4paper,x11names]{memoir}\n"
                                       "% -- DEFAULT PACKAGES \n[DEFAULT-PACKAGES]\n"
                                       "% -- PACKAGES \n[PACKAGES]\n"
                                       "% -- EXTRA \n[EXTRA]\n"
                                       "\\counterwithout{section}{chapter}\n"
                                       ))
                          ("\\chapter{%s}" . "\\chapter*{%s}")
                          ("\\section{%s}" . "\\section*{%s}")
                          ("\\subsection{%s}" . "\\subsection*{%s}")
                          ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
                          ("\\paragraph{%s}" . "\\paragraph*{%s}")
                          ("\\subparagraph{%s}" . "\\subparagraph*{%s}"))
                    ("article"
                          (,@ (concat  "\\documentclass[11pt,oneside,a4paper,x11names]{article}\n"
                                       "% -- DEFAULT PACKAGES \n[DEFAULT-PACKAGES]\n"
                                       "% -- PACKAGES \n[PACKAGES]\n"
                                       "% -- EXTRA \n[EXTRA]\n"
                                       ))
                          ("\\section{%s}" . "\\section*{%s}")
                          ("\\subsection{%s}" . "\\subsection*{%s}")
                          ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
                          ("\\paragraph{%s}" . "\\paragraph*{%s}")
                          ("\\subparagraph{%s}" . "\\subparagraph*{%s}"))
                    ("book"
                     (,@ (concat  "\\documentclass[]{book}\n"
                                  "% -- DEFAULT PACKAGES \n[DEFAULT-PACKAGES]\n"
                                  "% -- PACKAGES \n[PACKAGES]\n"
                                  "% -- EXTRA \n[EXTRA]\n"
                                  ))
                     ("\\chapter{%s}" . "\\chapter*{%s}")
                     ("\\section{%s}" . "\\section*{%s}")
                     ("\\subsection{%s}" . "\\subsection*{%s}")
                     ("\\subsubsection{%s}" . "\\subsubsection*{%s}"))
                    ("handout"
                          (,@ (concat  "\\documentclass[oneside,a4paper,]{tufte-handout}\n"
                                       "% -- DEFAULT PACKAGES \n[DEFAULT-PACKAGES]\n"
                                       "% -- PACKAGES \n[PACKAGES]\n"
                                       "% -- EXTRA \n[EXTRA]\n"
                                       ))
                          ("\\section{%s}" . "\\section*{%s}")
                          ("\\subsection{%s}" . "\\subsection*{%s}")
                          ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
                          ("\\paragraph{%s}" . "\\paragraph*{%s}")
                          ("\\subparagraph{%s}" . "\\subparagraph*{%s}"))
                    )
                  )
  
(add-to-list 'org-latex-classes '("tufte-handout"
                                          "\\documentclass[11pt,a4paper,x11names]{tufte-handout}\n"
                                          ("\\section{%s}" . "\\section*{%s}")
                                          ("\\subsection{%s}" . "\\subsection*{%s}")
                                          ) 'append)

(require 'ox-beamer)
(add-to-list 'org-latex-classes
             '("beamer"
               "\\documentclass\[presentation\]\{beamer\}"
               ("\\section\{%s\}" . "\\section*\{%s\}")
               ("\\subsection\{%s\}" . "\\subsection*\{%s\}")
               ("\\subsubsection\{%s\}" . "\\subsubsection*\{%s\}")))

(defun my-beamer-bold (contents backend info)
  (when (eq backend 'beamer)
    (replace-regexp-in-string "\\`\\\\[A-Za-z0-9]+" "\\\\textbf" contents)))

(defun my-beamer-caption (contents backend info)
  (when (eq backend 'beamer)
    (replace-regexp-in-string "\\\\caption\{" "\\\\caption*{" contents)))



(add-to-list 'org-export-filter-final-output-functions 'my-beamer-caption)
(add-to-list 'org-export-filter-bold-functions 'my-beamer-bold)
  
(setq org-export-allow-bind-keywords 't)