Re: Adding indent-bars to ELPA

[JD Smith <jdtsmith@gmail.com>]

> On Jul 24, 2024, at 3:08 PM, Eli Zaretskii <eliz@gnu.org> wrote:
> 
>> From: JD Smith <jdtsmith@gmail.com>
>> Date: Wed, 24 Jul 2024 14:33:16 -0400
>> 
>> I propose the addition of indent-bars to ELPA.
>> 
>> https://github.com/jdtsmith/indent-bars
>> jdtsmith/indent-bars: Fast, configurable indentation guide-bars for Emacs
>> github.com
>> 
>> 
>> This mode provides highly configurable indentation guide bars using stipple or character display.  Recent versions add optional treesitter-enabled local "scope" for additional focus.  There are many options to influence the behavior and appearance of the bars.
> 
> Interesting feature.  FWIW, I think this should be built-in, and
> implemented in the display engine, not as a Lisp add-on.

Something to build towards for sure.  Perhaps internal display engine support for all the heavy graphics lifting, and lisp config for treesitter etc. would be an interesting model.  In any case it's working well now for lots of users for over a year, so ELPA seems like the next step.

> It seems to work well, but has some problems with RTL text.  To see
> this, visit xdisp.c, turn on the mode, then go to around line 1900,
> set bidi-paragraph-direction to 'right-to-left', and scroll up and
> down several times: you will see broken bars, both with
> indent-bars-prefer-character nil and non-nil.

Hmm, I can say it's definitely never been tested with RTL.  Is that a mode people typically use for column-oriented content like code or config files?  Do you mean broken bars in the top partially displayed line?  I don't see any artifacts in RTL other than this, but I can't rule out build-dependent issues of course.