[O] Bug: Markdown backend does not appear in export dispatcher [8.2.10 (8.2.10-41-g42228a-elpa @ /Users/gastove/.emacs.d/elpa/org-20150525/)]

[Ross Donaldson]

--

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Hallo!

Recently started encountering a very strange thing: the `markdown`
backend no longer appears in my export dispatcher. The other four I have
listed (html, deck, ascii, and beamer) all appear; further, I can call the
org-md-export functions directly using M-x. They're clearly being
loaded, and behave perfectly normally. Even if the only two backends I
configure are markdown and html, only html will appear in the dispatcher
as an option.

Emacs  : GNU Emacs 24.5.1 (x86_64-apple-darwin13.4.0, NS apple-appkit-1265.21)
 of 2015-04-10 on builder10-9.porkrind.org
Package: Org-mode version 8.2.10 (8.2.10-41-g42228a-elpa @ 
/Users/gastove/.emacs.d/elpa/org-20150525/)

current state:
==============
(setq
 org-export-backends '(html markdown deck ascii beamer)
 org-tab-first-hook '(org-hide-block-toggle-maybe 
org-src-native-tab-command-maybe
                      org-babel-hide-result-toggle-maybe 
org-babel-header-arg-expand)
 org-latex-classes '(("beamer" "\\documentclass[presentation]{beamer}"
                      ("\\section{%s}" . "\\section*{%s}")
                      ("\\subsection{%s}" . "\\subsection*{%s}")
                      ("\\subsubsection{%s}" . "\\subsubsection*{%s}"))
                     ("article" "\\documentclass[11pt]{article}"
                      ("\\section{%s}" . "\\section*{%s}")
                      ("\\subsection{%s}" . "\\subsection*{%s}")
                      ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
                      ("\\paragraph{%s}" . "\\paragraph*{%s}")
                      ("\\subparagraph{%s}" . "\\subparagraph*{%s}"))
                     ("report" "\\documentclass[11pt]{report}" ("\\part{%s}" . 
"\\part*{%s}")
                      ("\\chapter{%s}" . "\\chapter*{%s}") ("\\section{%s}" . 
"\\section*{%s}")
                      ("\\subsection{%s}" . "\\subsection*{%s}")
                      ("\\subsubsection{%s}" . "\\subsubsection*{%s}"))
                     ("book" "\\documentclass[11pt]{book}" ("\\part{%s}" . 
"\\part*{%s}")
                      ("\\chapter{%s}" . "\\chapter*{%s}") ("\\section{%s}" . 
"\\section*{%s}")
                      ("\\subsection{%s}" . "\\subsection*{%s}")
                      ("\\subsubsection{%s}" . "\\subsubsection*{%s}"))
                     )
 org-speed-command-hook '(org-speed-command-default-hook 
org-babel-speed-command-hook)
 org-occur-hook '(org-first-headline-recenter)
 org-metaup-hook '(org-babel-load-in-session-maybe)
 org-html-format-drawer-function '(lambda (name contents) contents)
 org-log-done t
 org-latex-format-inlinetask-function 'ignore
 org-confirm-shell-link-function 'yes-or-no-p
 org-ascii-format-inlinetask-function 'org-ascii-format-inlinetask-default
 org-startup-folded nil
 org-export-with-section-numbers nil
 org-export-with-toc nil
 org-export-with-sub-superscripts nil
 org-latex-format-headline-function 'org-latex-format-headline-default-function
 org-todo-keyword-faces '(("TODO" . org-todo) ("DOING" . org-todo) ("BLOCKED" . 
org-warning)
                          ("CANCELLED" . org-done) ("IMPOSSIBLE" . org-done)
                          ("DONE" . org-done))
 org-startup-indented nil
 org-after-todo-state-change-hook '(org-clock-out-if-current)
 org-latex-format-drawer-function '(lambda (name contents) contents)
 org-from-is-user-regexp "\\<Ross Donaldson\\>"
 org-src-mode-hook '(org-src-babel-configure-edit-buffer 
org-src-mode-configure-edit-buffer)
 org-agenda-before-write-hook '(org-agenda-add-entry-text)
 org-babel-pre-tangle-hook '(save-buffer)
 org-mode-hook '(org-bindings (lambda nil (turn-on-auto-fill)) text-settings
                 #[nil "\300\301!\207" [run-hooks prelude-org-mode-hook] 2]
                 er/add-org-mode-expansions
                 #[nil "\300\301\302\303\304$\207"
                   [org-add-hook change-major-mode-hook org-show-block-all 
append local] 5]
                 #[nil "\300\301\302\303\304$\207"
                   [org-add-hook change-major-mode-hook 
org-babel-show-result-all append local]
                   5]
                 org-babel-result-hide-spec org-babel-hide-all-hashes)
 org-refile-targets '((org-agenda-files :maxlevel . 3))
 org-ascii-format-drawer-function '(lambda (name contents width) contents)
 org-ctrl-c-ctrl-c-hook '(org-babel-hash-at-point 
org-babel-execute-safely-maybe)
 org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers
                  org-cycle-hide-inline-tasks org-cycle-show-empty-lines
                  org-optimize-window-after-visibility-change)
 org-refile-allow-creating-parent-nodes 'confirm
 org-todo-keywords '((sequence "TODO(t)" "DOING(o)" "|" "DONE(d)")
                     (sequence "BLOCKED(b)" "|" "UNBLOCKED (u)" "CANCELLED(c)" 
"IMPOSSIBLE(i)"))
 org-hide-emphasis-markers t
 org-babel-tangle-lang-exts '(("clojure" . "clj") ("python" . "py") 
("emacs-lisp" . "el"))
 org-confirm-elisp-link-function 'yes-or-no-p
 org-metadown-hook '(org-babel-pop-to-session-maybe)
 org-html-format-headline-function 'ignore
 org-babel-load-languages '((python . t) (emacs-lisp \.t) (clojure . t))
 org-html-format-inlinetask-function 'ignore
 org-agenda-files '("~/Dropbox/org-docs/cotidienne.org" 
"~/Code/astromech/notes.org")
 org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
 org-src-fontify-natively t
 )
Cheers,
Ross