Re: relative line numbers and folding: how to make they play along?

[Filipe Silva]

Eli, sorry, I did not answer your question because everybody on other
forums, github, etc... told me that I would need to install a third party
package to do what I showed and even them, it would not play along with
folding.

So I wanted to know if you could, starting from emacs -Q, construct a lisp
code that achieved the effect shown here:

https://cloud.githubusercontent.com/assets/8352747/16707876/4bd64c22-45b5-11e6-8d13-ae9c994cbb02.png

If it can't be done, I think it is the case to issue a feature request for
that.

cheers,

Filipe

On Wed, Jul 13, 2016 at 5:23 PM, Eli Zaretskii <eliz@gnu.org> wrote:

> > From: Stefan Monnier <monnier@iro.umontreal.ca>
> > Date: Wed, 13 Jul 2016 16:10:30 -0400
> >
> > I think to implement relative-visual-linum-mode efficiently, we'd need
> > help from the display engine.  E.g.:
> > - First perform redisplay of the window.
> > - then, go through the window, visual-line by visual-line
> >   and add something in the margin.
> > - then update the margin part of the matrices.
>
> AFAIU, this would cause a momentary flickering of an incorrect display
> (without the line numbers), until they are computed and displayed.
>
> And I still don't see any answer to my question, alas.
>
>