Re: [patch suggestion] Mitigating the poor Emacs performance on huge org files: Do not use overlays for PROPERTY and LOGBOOK drawers

[Nicolas Goaziou]

Hello,

Ihor Radchenko <address@hidden> writes:

> Just tested the master branch.
> Three observations on large org file:
>
> 1. Next/previous line on folder buffer is still terribly slow

Oops, you are right. I fixed this. It should be way faster. I can
navigate in your example file without much trouble.

Please let me know how it goes.

> 2. Unfolding speed does not seem to be affected by the last commits - it
> is still much slower than text property version. There might be some
> improvement if I run Emacs for longer time though (Emacs generally
> becomes slower over time).

The last commits have nothing to do with unfolding.

I'm not pretending that overlays are faster than text properties,
either.

With the current implementation property drawers add no overhead : last
commits reduce drastically the number of overlays active in a buffer at
a given time.

> 3. <TAB> <TAB> on a headline with several levels of subheadings moves
> the cursor to the end of subtree, which did not happen in the past.

Indeed. I fixed that, too. Thank you!

Regards,

-- 
Nicolas Goaziou