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Re: PATCH: draw prompt on the correct line after window change
- X-seq: zsh-workers 45370
- From: Roman Perepelitsa <roman.perepelitsa@xxxxxxxxx>
- To: Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>
- Subject: Re: PATCH: draw prompt on the correct line after window change
- Date: Sat, 1 Feb 2020 18:22:08 +0100
- Cc: Sebastian Gniazdowski <sgniazdowski@xxxxxxxxx>, Zsh hackers list <zsh-workers@xxxxxxx>
- In-reply-to: <CAN=4vMq_Vx8hb4uTNTXaUgiM0aHS0ZnC4-ZSe7XR6VPqqwuMDg@mail.gmail.com>
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On Mon, Jan 6, 2020 at 8:38 PM Roman Perepelitsa
> On Mon, Jan 6, 2020 at 8:28 PM Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx> wrote:
> > IIR the problem correctly, a possible approach to resolve my concern would be to have the terminal report the cursor position for the shell to read+save it, rather than rely on the terminal save/restore action.
> I implemented this prior to the patch I sent. Unfortunately, this
> added enough prompt latency to make it noticeable.
I've implemented this again to verify that my recollection of the
reason I rejected this approach was correct. It was not. u7 is indeed
slow but the primary reason I abandoned it in the first implementation
is that it doesn't work here. The absolute position of prompt start
changes when terminal content gets reflown upon resize.
After a few more issues filed against powerlevel10k due to the
resizing bug, I wrote this troubleshooting entry:
Perhaps it'll help others who stumble on this.
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