Re: Re: org-src-fontify-natively makes things very, very slow

[Julian Burgos <jmburgos@uw.edu>]

Hi Eric,

I have a small function to insert the opening and ending of an R code
block bound to a key, so I always edit the code between a
"#+begin_src R" and "#+end_src R".  I still get a considerable
slowdown, even with an empty document with a single line of code.

Julian


On Fri, Mar 18, 2011 at 8:38 AM, Eric S Fraga <e.fraga@ucl.ac.uk> wrote:
> Sébastien Vauban <wxhgmqzgwmuf@spammotel.com> writes:
>
> [...]
>
>> Maybe this is (partly?) due to the overlay I added:
>>
>> #+begin_src emacs-lisp
>>                 (overlay-put (make-overlay beg1 block-end)
>>                              'face 'org-block-background))
>> #+end_src
>
> This could indeed be one cause, especially depending on what this does
> when there is no block-end line, or at least not anywhere near in the
> buffer.  I seem to get a slowdown when I have a situation like this:
>
> #+begin_example
>
> [... some text ...]
> #+begin_src somelanguage
> [... text which is part of the source block...]
> <point here>
>
> [... lots of other text ...]
> [... including other source blocks]
>
> #+end_example
>
> where there is no matching #+end_src or, more precisely, the
> next #+end_src line is one that does not belong to this current source
> block.  Your search (in org.el) for the end of the block assumes that it
> does have the end statement in place already.  I'm not sure how to fix
> this because it's an ill-defined situation.
>
> It may be worthwhile making the overlay optional?  Although I must admit
> that I like it!
>
> My solution, by the way, is to insert the #+end_src line immediately
> upon writing a #+begin_src line and then back up a line to start writing
> the code.
>
> --
> : Eric S Fraga (GnuPG: 0xC89193D8FFFCF67D) in Emacs 24.0.50.1
> : using Org-mode version 7.5 (release_7.5.77.g74268)
>
>



-- 
Julian Mariano Burgos
Hafrannsóknastofnunin/Marine Research Institute
Skúlagata 4, 121 Reykjavík, Iceland
Sími/Telephone : +354-5752037
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Netfang/Email: julian@hafro.is, jmburgos@uw.edu