[O] Problem with choosing mode while editing blocks with C-c '

[suvayu ali]

Hi,

I am having problems editing blocks with C-c '. If the blocks are marked
with upper case letters Emacs brings up the temporary buffer in
picture-mode.

   #+BEGIN_SRC latex

   #+END_SRC

However the buffer mode is chosen correctly if lower case letters are
used.

   #+begin_src latex

   #+end_src

Any ideas what could be wrong?

-- 
Suvayu

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