cmdheigh=0 flickering on neovim/neovim#20644

[arsham]

On startup the statusbar flickers. See for more information.

Steps to reproduce

Compile neovim with this. Start neovim.

[ldelossa]

Gh.nvim utilizes vim.api.nvim_echo() extensively to write info to the status line. I havent played with this setting much, but I do remember that the api didnt play well with cmdheight set to zero. Could this be related to the issue?

[arsham]

Good point there. Let me check if that API causes the flickering.

[arsham]

Yep, that's it!

[ldelossa]

Yeah, im not sure how the Neovim core team advises to handle this. From my point of view that new cmdheight just kinda breaks the echo api at times.

I havent gotten around to removing the echo api usage, one because i personally like and and two because im waiting to see if neovim core fixes little issues like this.

[arsham]

Fair enough.
One thing though, would there an autocmd firing at some point that would echo an empty string? I'm saying this because when this plugin loads, there are no visible characters echoed. I did the following and the end result was the same:

vim.defer_fn(function()
  vim.api.nvim_echo({{" ", "LTInfo"}}, false, {})
end, 100)

I'm not saying this is the issue, but it is a shot in a dark. Anything happens after that you can't do anything about anyway.

[ldelossa]

Hmm. I thought we remove any echo commands that would happen on startup.

When gh.nvim starts, it will call out to the ghcli to cache the current user info, but, we no longer create a echo for that. I can take a deeper look however.