Aloha Nicolas,

On Nov 18, 2010, at 12:07 PM, Nicolas Goaziou wrote:

> Hello,
>
>>>>>> Thomas S Dye writes:
>
>> I'm finding that I frequently work with Org-mode files that need
>> different configurations. I typically have a #+begin_src emacs-lisp
>> block in these files that I can execute with C-c C-c, so that emacs
>> behaves the way the file requires for the task at hand. When I'm
>> done, though, and jump onto the next task, which might depend on my
>> standard configuration to work correctly, I sometimes find that the
>> changes I've made break things. At this point, I typically save,
>> quit emacs and start over.
>
>> What I'd like to do is be able to have, in each file that contains
>> an emacs-lisp source block that changes the configuration, a
>> corresponding source code block that puts things back the way they
>> were before the block was executed.
>
>> Perhaps there is an easy way to do this?
>
> What about making configuration variables buffer-local in the block
> you execute? Once the buffer is killed, you should be back to your
> previous configuration.
>
> For example:
>
>  #+BEGIN_SRC emacs-lisp
>  (make-local-variable 'sentence-end-double-space)
>  (setq sentence-end-double-space t)
>  #+END_SRC

This looks like an excellent idea.  Thanks!

Tom