[Orgmode] Re: Org now fontifies code blocks

[Thomas S. Dye]

On Sep 9, 2010, at 12:35 PM, Dan Davison wrote:

> "Thomas S. Dye" <address@hidden> writes:
>
> > Hi Dan,
> >
> > Glad to know that Darlan's slowdown is fixed.
> >
> > No change here that I can tell.  Now that I've had org-src-fontify-
> > natively set to t for a while, I can see that the slowdown is
> > proportional to the number and size of code blocks in the Org-mode
> > file.  It is most noticeable in a file with about 30 printed pages of
> > a manuscript held in several dozen LaTeX code blocks, quite a bit  
> > less
> > so in a file where the several dozen code blocks are short R  
> > routines.
> >
> > FWIW, I see the org-src-fontification message while unfolding,
>
> Hi Tom,
>
> Could you post that message please (go to *Messages* buffer after
> unfolding and it should be there). I haven't put any messages in,  
> but I
> think I know the message you mean and I think it is an Emacs message.
>
> Dan


Hi Dan,

Yes, here is a portion of the message buffer:

Searching for `makaainana.org'....
Automatic display of crossref information was turned on
Fontifying  org-src-fontification:latex-mode...  
(regexps.............................)
Automatic display of crossref information was turned on
Fontifying  org-src-fontification:latex-mode...  
(regexps.............................)
Automatic display of crossref information was turned on
Fontifying  org-src-fontification:latex-mode...  
(regexps.............................)
Automatic display of crossref information was turned on
Fontifying  org-src-fontification:latex-mode...  
(regexps.............................)
Automatic display of crossref information was turned on
Fontifying  org-src-fontification:latex-mode...  
(regexps.............................)
Quit

I believe the message comes from line 744 of org-src.el

All the best,
Tom
> > even
> > when the unfolded result doesn't show a code block.  Later when a  
> > sub-
> > tree is unfolded, the org-src-fontification message appears again,
> > which makes me wonder if there is unnecessary work going on.
> >
> > All the best,
> > Tom
> >
> > On Sep 9, 2010, at 3:02 AM, Darlan Cavalcante Moreira wrote:
> >
> > > Thank you Dan,
> > >
> > > It is perfect now. No perceivable slowdown
> > >
> > > At Wed, 08 Sep 2010 13:41:51 -0400,
> > > Dan Davison wrote:
> > > > Darlan Cavalcante Moreira <address@hidden> writes:
> > > >
> > > > > Maybe my problem is not related to slow folding/unfolding behavior
> > > > > that you
> > > > > are getting, but if I set the org-src-tab-acts-natively variable
> > > > > to t the
> > > > > folding/unfolding of headlines becomes very slow for me.
> > > >
> > > > Thank you Darlan,
> > > >
> > > > I have just pushed a change that should make that better -- does  
> > > > that
> > > > improve things?
> > > >
> > > > I did think there was something else going on (that was why I asked
> > > > Tom
> > > > for confirmation), but I didn't have time to investigate
> > > > properly. The
> > > > problem seems to be that, on a folded headline containing many
> > > > blocks,
> > > > `org-edit-src-find-region-and-lang' is actually quite slow to  
> > > > come up
> > > > with the answer "No, there's nothing for me to edit here."  (try
> > > > issuing
> > > > M-x org-edit-src-code on a folded headline containing many  
> > > > blocks; I
> > > > haven't understood this properly yet.)
> > > >
> > > > Dan
> > > >
> > > >
> > > >
> > > > > In fact, I was thinking that I had the problem described here, but
> > > > > I just
> > > > > isolated the cause and in my case it was the org-src-tab-acts-
> > > > > natively
> > > > > variable that I had set to t in my .emacs file.
> > > > >
> > > > > --
> > > > > Darlan
> > > > >
> > > > > At Tue, 7 Sep 2010 06:05:54 -1000,
> > > > > "Thomas S. Dye" <address@hidden> wrote:
> > > > > > Hi Dan,
> > > > > >
> > > > > > Yes, I can confirm that (setq org-src-fontify-natively nil) makes
> > > > > > unfolding snappy again.
> > > > > >
> > > > > > All the best,
> > > > > > Tom
> > > > > >
> > > > > > On Sep 7, 2010, at 3:23 AM, Dan Davison wrote:
> > > > > >
> > > > > > > "Thomas S. Dye" <address@hidden> writes:
> > > > > > >
> > > > > > > > Aloha Dan,
> > > > > > > >
> > > > > > > > This is really nice.  Thanks for shepherding it along.
> > > > > > > >
> > > > > > > > In some of my use cases there is a substantial delay when
> > > > > > > > opening a
> > > > > > > > large file and then unfolding sections with many source code
> > > > > > > > blocks.
> > > > > > >
> > > > > > > Hi Tom,
> > > > > > >
> > > > > > > I think this is a good point and probably as you say a reason  
> > > > > > > for
> > > > > > > turning it off by default. Org should be (and was!)  
> > > > > > > lightweight by
> > > > > > > default.
> > > > > > >
> > > > > > > I haven't had time to profile things properly. Before we turn it
> > > > > > > off,
> > > > > > > could you please confirm that all your slowness problems go away
> > > > > > > when
> > > > > > > you do (setq org-src-fontify-natively nil)?
> > > > > > >
> > > > > > > Thanks,
> > > > > > >
> > > > > > > Dan
> > > > > > >
> > > > > > >
> > > > > > > > I don't mind this and intend to keep the feature on, but I do
> > > > > > > > think
> > > > > > > > it
> > > > > > > > should be off by default because the user potentially pays an
> > > > > > > > appreciable time penalty for the pleasure of semantic source  
> > > > > > > > code
> > > > > > > > markup.
> > > > > > > >
> > > > > > > > Thanks again for this nice feature.
> > > > > > > >
> > > > > > > > All the best,
> > > > > > > > Tom
> > > > > > > >
> > > > > > > > On Sep 3, 2010, at 7:30 AM, Eric S Fraga wrote:
> > > > > > > >
> > > > > > > > > On Thu, 02 Sep 2010 08:51:16 -0700, Dan Davison
> > > > > > > > > <address@hidden
> > > > > > > > > > wrote:
> > > > > > > > > >
> > > > > > > > > > I've just pushed changes which mean that Org now fontifies
> > > > > > > > > > code in
> > > > > > > > > > code
> > > > > > > > > > blocks. Currently, this is turned on by default, so it  
> > > > > > > > > > would be
> > > > > > > > > > helpful
> > > > > > > > > > if people could report any problems, and opinions as to
> > > > > > > > > > whether it
> > > > > > > > > > should be on or off by default.<
> > > > > > > > >
> > > > > > > > > [...]
> > > > > > > > >
> > > > > > > > > This is brilliant!  Works very well on my notebook (with small
> > > > > > > > > code
> > > > > > > > > blocks as that's all I tend to have).  Many thanks!
> > > > > > > > > --
> > > > > > > > > Eric S Fraga
> > > > > > > > > GnuPG: 8F5C 279D 3907 E14A 5C29  570D C891 93D8 FFFC F67D
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> > > > > > > >
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