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bug#18793: 24.4; zero width rectangular selection displaces text
From: |
Lars Ingebrigtsen |
Subject: |
bug#18793: 24.4; zero width rectangular selection displaces text |
Date: |
Fri, 06 May 2022 14:52:25 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) |
Eli Zaretskii <eliz@gnu.org> writes:
> I'm not sure. This was supposed to be a nifty feature. If some users
> are annoyed by its effect, the easy way to handle that is to let those
> users disable the cause of the annoyance. After all, we don't show
> anything comparable for non-rectangular regions, do we?
That's a good point.
> What other uses could this have, except fill-column indication, which
> is another minor feature?
>
> Adding capabilities to the Emacs display that operate on
> sub-character-cell resolution will mean serious complications. For
> example, what would we do when displaying color Emoji at that place?
> Or what about images? Or what if the character in question is
> currently highlighted by mouse-face?
>
> IOW, I'm asking whether these marginal features are worth a serious
> surgery and complications in the display engine, which currently has
> the canvas-based design?
display-fill-column-indicator-mode was the only one that sprang
immediately to mind, but I think it could be useful when displaying
tabular data, and you want to mark boundaries without taking up extra
space, for instance.
And speaking off the fill indicator -- bug#54598 talks a bit about the
problems with the current implementation. But that mode does show how a
box cursor and a region could behave with these vertical lines.
And I don't think colour emojis or images would represent that much of a
problem -- I think we'd draw the line on top of the glyph?
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
- bug#18793: 24.4; zero width rectangular selection displaces text, Lars Ingebrigtsen, 2022/05/05
- bug#18793: 24.4; zero width rectangular selection displaces text, Eli Zaretskii, 2022/05/05
- bug#18793: 24.4; zero width rectangular selection displaces text, Drew Adams, 2022/05/05
- bug#18793: 24.4; zero width rectangular selection displaces text, Lars Ingebrigtsen, 2022/05/06
- bug#18793: 24.4; zero width rectangular selection displaces text, Eli Zaretskii, 2022/05/06
- bug#18793: 24.4; zero width rectangular selection displaces text, Lars Ingebrigtsen, 2022/05/06
- bug#18793: 24.4; zero width rectangular selection displaces text, Lars Ingebrigtsen, 2022/05/06
- bug#18793: 24.4; zero width rectangular selection displaces text, Eli Zaretskii, 2022/05/06
- bug#18793: 24.4; zero width rectangular selection displaces text, Lars Ingebrigtsen, 2022/05/06
- bug#18793: 24.4; zero width rectangular selection displaces text, Eli Zaretskii, 2022/05/06
- bug#18793: 24.4; zero width rectangular selection displaces text,
Lars Ingebrigtsen <=
- bug#18793: 24.4; zero width rectangular selection displaces text, Eli Zaretskii, 2022/05/06
- bug#18793: 24.4; zero width rectangular selection displaces text, Lars Ingebrigtsen, 2022/05/07
- bug#18793: 24.4; zero width rectangular selection displaces text, Lars Ingebrigtsen, 2022/05/07
- bug#18793: 24.4; zero width rectangular selection displaces text, Eli Zaretskii, 2022/05/07
- bug#18793: 24.4; zero width rectangular selection displaces text, Eli Zaretskii, 2022/05/07
- bug#18793: 24.4; zero width rectangular selection displaces text, Drew Adams, 2022/05/06