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Re: Read a line from user without clearing screen below the prompt while allowing user to use arrow keys to make edits in middle of line

X-seq: zsh-workers 51270
From: Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>
To: Oliver Kiddle <opk@xxxxxxx>
Cc: OG Code Poet <ogcodepoet@xxxxxxxxx>, Zsh hackers list <zsh-workers@xxxxxxx>
Subject: Re: Read a line from user without clearing screen below the prompt while allowing user to use arrow keys to make edits in middle of line
Date: Sat, 31 Dec 2022 16:10:30 -0800
Archived-at: <https://zsh.org/workers/51270>
In-reply-to: <87109-1672492415.579439@wMHr.mGJl.BpB2>
List-id: <zsh-workers.zsh.org>
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On Sat, Dec 31, 2022 at 5:14 AM Oliver Kiddle <opk@xxxxxxx> wrote:
>
> The first idea that came into my mind was to try setopt singlelinezle

That was my first thought too, and I also tried setting LINES=1 along
with it, but no help.

> I think the clearing from
> the cursor to the end of the window serves a purpose in general.

In fact I think it's issuing both move-to-first-column as well as
clear-to-end.  It wants to know exactly what positions the prompt
occupies and have free rein over the rest.

Seems like it should be possible to do something with a tweaked
read-from-minibuffer as the vared initial-widget, but I think vared is
going to end up clearing at least the entire last line of the screen
no matter what.

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