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I have this in my init.el to enable block code syntax highlighting in org-mode: 

(setq org-src-fontify-natively t)

I have also this for org-babel:

(org-babel-do-load-languages
 'org-babel-load-languages
 '((emacs-lisp . t)
   (ditaa . t)))

when I insert source code < s followed by TAB to draw something using ditaa (same problem with emacs-lisp code, it seems to be a general SRC code block problem), the syntax highlighting breaks when I write this line: 

#+BEGIN_SRC ditaa :file "./foo.png" :cmdline -r

No syntax highlighting but code can be evaluated

enter image description here

However, when I leave only #+BEGIN_SRC sitting alone in the first line I get the highlighting right, but code will not be evaluated in this case when I hit C-c C-c. Even one space after SRC is enough to break that syntax highlighting. What is going on? Can anyone help me fix it?

Syntax highlighting is right but code cannot be evaluated

enter image description here

Note

  • GNU Emacs 24.5.1 (x86_64-pc-linux-gnu, GTK+ Version 3.18.9) of 2016-04-17 on lgw01-04, modified by Debian)
  • GNU Emacs 25.1.2 (x86_64-pc-linux-gnu, GTK+ Version 3.18.9) of 2016-09-29; nothing changed.
  • Org mode version 9.0.4 (release_9.0.4-248-gdef8a8)
  • Org mode version 9.0.5 (release_9.0.5-288-g4caad0) problem presists
  • theme used is moe-dark

Update

When I run emacs --vanilla from the terminal, the problem disappears. So what is going on? What to do next to find the cause from here?

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1 Answers1

0

By commenting out this line in my init.el problem was removed, the line was related to polymode package.

(add-to-list 'auto-mode-alist '("\\.org" . poly-org-mode))

That's it. This post was very helpful.

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