`evil-org->` doesn't matter per se. It runs `evil-shift-right`, which indents the selected region by the `evil-shift-width` amount. `evil-shift-width` is set based on `tab-width`. I solved this specific problem by overriding `evil-shift-width` using a timer in an org-mode hook. The delay introduced by the timer was necessary, as something kept overriding my settings. Perhaps the magic machinery that sets `tab-width` in the source blocks can also set `evil-shift-width`. The best-case scenario would be to have a list of variables that need to be set from their major-mode buffer in the source blocks.

> May you please provide a detailed example where 8 spaces causes issues?

My lists are still indenting with 2 spaces, so I am not actually seeing 8 spaces. I have no idea why that is, but I very much like the 2-space indentation.

```
- a
  - b
```

I see 4 spaces in numerical lists, which again, I have no idea about:

```
1. hi
   2. hi
      3. hi
```

So I don't see the effects of `tab-width` anywhere except in `evil-shift-width`, as far as I can see currently.

On Sat, Mar 16, 2024 at 1:11 PM Ihor Radchenko <yantar92@posteo.net> wrote:
Rudi C <rudiwillalwaysloveyou@gmail.com> writes:

> Recently, a breaking change has been introduced in Org mode that sets the
> default tab-width to 8 spaces (
> https://list.orgmode.org/orgmode/8734y5d2gs.fsf@localhost/). This change
> has made using Python source blocks in Org mode challenging, as operations
> like `evil-org->` rely on `tab-width`, and Python code conventions
> typically use 4 spaces for indentation.

May you please provide more details on what exactly "evil-org->" refers
to and what specific problems you encountered?

> Moreover, using 8 spaces for indentation is generally unsuitable for small
> laptop screens, where screen real estate is of utmost importance.

May you please provide a detailed example where 8 spaces causes issues?
In source blocks specifically, we make sure that tab width visually
looks as in the corresponding source code buffer.

--
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>