[BUG] org-indent and display text property not preserving column when moving

[BUG] org-indent and display text property not preserving column when moving

[Darius Foo]

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Hi, I've encountered what seems like a bug with org-indent. When I move the
cursor using the arrow keys on lines with the display text property set,
its column isn't preserved, jumping ahead or back by a fixed amount.

This issue actually came up with org-modern, but I'm minimized it to the
following.

    (use-package org
      :mode (("\\.org$" . org-mode))
      :custom
      (org-startup-indented t)
      :config
      (font-lock-add-keywords 'org-mode '(("^\\(-\\)\\( \\)" 1 '(face nil
display "•")))))

Here is an org file to try it on. With the cursor on x, pressing up moves
it to y instead of a, and pressing down moves it back to x. It seems like
the amount moved depends on the indentation added by org-indent: with point
on z, pressing up moves it to w.

    * h1
    ** h2
    - a...y.......
    - x...........
    *** h3
    **** h4
    - ........w...
    - z...........

Thanks.
Darius

Emacs  : GNU Emacs 28.2 (build 2, x86_64-apple-darwin21.6.0, NS
appkit-2113.60 Version 12.5.1 (Build 21G83))
 of 2023-01-06
Package: Org mode version 9.6.1 (9.6.1-g74eb0f @
/Users/darius/.emacs.d/straight/build/org/)

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Re: [BUG] org-indent and display text property not preserving column when moving

[Ihor Radchenko]

Darius Foo <darius.foo.tw@gmail.com> writes:

> Here is an org file to try it on. With the cursor on x, pressing up moves
> it to y instead of a, and pressing down moves it back to x. It seems like
> the amount moved depends on the indentation added by org-indent: with point
> on z, pressing up moves it to w.
>
>     * h1
>     ** h2
>     - a...y.......
>     - x...........
>     *** h3
>     **** h4
>     - ........w...
>     - z...........

Thanks for reporting!
It is unlikely an Org bug. Rather Emacs bug.
May you report it to Emacs devs via M-x report-emacs-bug?

-- 
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>

Re: [BUG] org-indent and display text property not preserving column when moving

[Darius Foo]

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Ihor Radchenko <yantar92@posteo.net> wrote:
> Thanks for reporting!
> It is unlikely an Org bug. Rather Emacs bug.
> May you report it to Emacs devs via M-x report-emacs-bug?

Thanks! I narrowed it down further to just calls to add-text-properties.
Will do that.

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