GNU bug report logs - #66275
30.0.50; The first line gets invisible when C-g on Android

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Shingo Tanaka <shingo.fg8 <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 30.0.50; The first line gets invisible when C-g on Android
Date: Sat, 30 Sep 2023 17:05:22 +0900

Hi,


On Android, when (setq visible-bell t) and type C-g (keyboard-quit),
the first line of the displayed window is overwritten with a white line
and gets invisible.

Here is how to reproduce.

1. Run Emacs without init file.
2. Goto *scratch* buffer and evaluate (setq visible-bell t)
3. Type C-g
3. You will see that the first line of *scratch* buffer gets disappeared.

Device: Xiaomi Pad 5 (with a physical bluetooh keyboard)
MIUI Version: MIUI Pad Global 14.0.6  14.0.6.0(TKXMIXM)
Android Version: 13 TKQ1.221013.002
Emacs Binary: emacs-30.0.50-29-arm64-v8a.apk
https://sourceforge.net/projects/android-ports-for-gnu-emacs/files/

(emacs-version)
"GNU Emacs 30.0.50 (build 1, aarch64-unknown-linux-android29)
 of 2023-09-30"

If any further information is needed, please let me know.

Regards,
Shingo

Message #8 received at 66275 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Shingo Tanaka <shingo.fg8 <at> gmail.com>
Cc: 66275 <at> debbugs.gnu.org
Subject: Re: bug#66275: 30.0.50; The first line gets invisible when C-g on
 Android
Date: Sun, 01 Oct 2023 09:42:46 +0800

Shingo Tanaka <shingo.fg8 <at> gmail.com> writes:

> Hi,
>
>
> On Android, when (setq visible-bell t) and type C-g (keyboard-quit),
> the first line of the displayed window is overwritten with a white line
> and gets invisible.
>
> Here is how to reproduce.
>
> 1. Run Emacs without init file.
> 2. Goto *scratch* buffer and evaluate (setq visible-bell t)
> 3. Type C-g
> 3. You will see that the first line of *scratch* buffer gets disappeared.

Thanks.  visible-bell is presently nonfunctional under Android,
consequent upon several errors (or, at the minimum, documentation
errors) within Android's drawing primitives.

I will attempt to circumvent these shortcomings; but, given that
visible-bell is a comparatively unused feature, this will not occupy a
position high up my list of priorities.

Message #11 received at 66275 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefankangas <at> gmail.com>
To: Po Lu <luangruo <at> yahoo.com>, Shingo Tanaka <shingo.fg8 <at> gmail.com>
Cc: 66275 <at> debbugs.gnu.org
Subject: Re: bug#66275: 30.0.50;
 The first line gets invisible when C-g on Android
Date: Sat, 30 Sep 2023 19:22:59 -0700

Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text
editors" <bug-gnu-emacs <at> gnu.org> writes:

> given that visible-bell is a comparatively unused feature, this will
> not occupy a position high up my list of priorities.

What makes you say that?  It seems highly popular from where I'm standing.

For example, see Bug#1305.

Message #14 received at 66275 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Stefan Kangas <stefankangas <at> gmail.com>
Cc: Shingo Tanaka <shingo.fg8 <at> gmail.com>, 66275 <at> debbugs.gnu.org
Subject: Re: bug#66275: 30.0.50; The first line gets invisible when C-g on
 Android
Date: Sun, 01 Oct 2023 10:55:48 +0800

Stefan Kangas <stefankangas <at> gmail.com> writes:

> What makes you say that?  It seems highly popular from where I'm standing.
>
> For example, see Bug#1305.

I surmise from reading some of the follow-ups to Bug#1305 (and its
progeny) that it is popular for users to turn the keyboard bell _off_,
rather than for them to enable visible-bell.

But I've not found the time to examine that bug report in detail, so
should you disagree, please feel at liberty to provide a more thorough
recapitulation.

TIA.

Message #17 received at 66275 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Stefan Kangas <stefankangas <at> gmail.com>
Cc: luangruo <at> yahoo.com, shingo.fg8 <at> gmail.com, 66275 <at> debbugs.gnu.org
Subject: Re: bug#66275: 30.0.50;
 The first line gets invisible when C-g on Android
Date: Sun, 01 Oct 2023 08:31:18 +0300

> Cc: 66275 <at> debbugs.gnu.org
> From: Stefan Kangas <stefankangas <at> gmail.com>
> Date: Sat, 30 Sep 2023 19:22:59 -0700
> 
> Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text
> editors" <bug-gnu-emacs <at> gnu.org> writes:
> 
> > given that visible-bell is a comparatively unused feature, this will
> > not occupy a position high up my list of priorities.
> 
> What makes you say that?  It seems highly popular from where I'm standing.
> 
> For example, see Bug#1305.

FWIW, I use visible-bell since the first day I started using Emacs.
On most of my machines, the speakers are turned off most of the time,
so the "normal" bell is useless for me.

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