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bug#36633: Scrolling by pixels: visible stretch glyphs overwrite header-
From: |
Keith David Bershatsky |
Subject: |
bug#36633: Scrolling by pixels: visible stretch glyphs overwrite header-line. |
Date: |
Sun, 14 Jul 2019 09:52:33 -0700 |
I forgot to cc Stefan K. and Eli Z. with the attached post ....
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Date: Sun, 14 Jul 2019 09:47:25 -0700
From: Keith David Bershatsky <esq@lawlist.com>
To: Alan Third <alan@idiocy.org>
Cc: 36633@debbugs.gnu.org
Subject: Re: bug#36633: Scrolling by pixels: visible stretch glyphs overwrite
header-line.
Here are links to two (2) youtube videos showing the issue on Emacs 26.1 (built
by https://emacsformacosx.com/ a few months ago) and also the master branch
that I built using a commit from 07/10/2019
(40cd6278ba965f3a9fcdddc568eb9ee7c69cf899). I don't have a 26.2 build at the
moment. The issue is less noticeable on the master branch, but can still be
seen nevertheless. I have not studied the code as to what makes this feature
work, but offhand would think that the header-line should not be overwritten by
the row moving upwards (rather than updated after it has been overwritten).
Emacs 26.1: https://youtu.be/Y8cZfURSwZc
Emacs Master Branch: https://youtu.be/BO3r9_6OvYo
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> Date: [07-14-2019 03:39:35] <14 Jul 2019 11:39:35 +0100>
> From: Alan Third <alan@idiocy.org>
>
> * * *
>
> Hi Keith, I can't replicate this behaviour. The worst I see is some
> flickering of the header line, which is unfortunately to be expected
> from the current implementation.
>
> When you do it is the header line being overwritten and not immediately
> updated?
> --
> Alan Third
- bug#36633: Scrolling by pixels: visible stretch glyphs overwrite header-line., Keith David Bershatsky, 2019/07/12
- bug#36633: Scrolling by pixels: visible stretch glyphs overwrite header-line., Eli Zaretskii, 2019/07/13
- bug#36633: Scrolling by pixels: visible stretch glyphs overwrite header-line., Alan Third, 2019/07/14
- bug#36633: Scrolling by pixels: visible stretch glyphs overwrite header-line., Keith David Bershatsky, 2019/07/14
- bug#36633: Scrolling by pixels: visible stretch glyphs overwrite header-line.,
Keith David Bershatsky <=
- bug#36633: Scrolling by pixels: visible stretch glyphs overwrite header-line., Keith David Bershatsky, 2019/07/17
- bug#36633: Scrolling by pixels: visible stretch glyphs overwrite header-line., Keith David Bershatsky, 2019/07/17