GNU bug report logs - #16856
24.3.50; Cursor leaves garbage in fringe (and a request: width of fringes + scroll bar should be full characters)

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From: Anders Lindgren <andlind <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 16856 <at> debbugs.gnu.org, Alan Third <alan <at> idiocy.org>, Keith David Bershatsky <esq <at> lawlist.com>, David Reitter <david.reitter <at> gmail.com>, martin rudalics <rudalics <at> gmx.at>
Subject: bug#16856: Enable fringe cursor when *almost* exact_window_width_line_p
Date: Sat, 11 Nov 2017 18:49:03 +0100

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Hi!

On Sat, Nov 11, 2017 at 6:25 PM, Eli Zaretskii <eliz <at> gnu.org> wrote:
>
> ??? Are you saying that drawing on macOS is not clipped by the
> window's edge?

Yes, when it comes to the cursor, that is correct.


> > When the cursor is moved, the
> > fringe isn't updated, so artefacts are left behind.
>
> I saw no artifacts on the image that was posted.


I just verified that the following recipe (posted in 2016) demonstrates the
problem, on NS. (The original recipe from 2014 no longer works, though).

   emacs -Q
    (setq truncate-partial-width-windows nil)
    C-x 3
    C-x o
    C-u 37 x
       Here, the cursor which is in text area blinks, while the part in the
fringe doesn't.

       Wait until the the cursor stop blinking
    C-a
        Now, the right fringe contains half a cursor.

    -- Anders

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