copilot.lua when used with cmdheight=0 makes statusline disappear

[simonmandlik]

Screen.Recording.2024-12-15.at.17.24.09.mov

Happens not only in unnamed buffers but on named as well.

MWE:

1. nvim -u minimal_copilot.lua
2. Enter insert mode

minimal_copilot.lua:

local root = vim.fn.fnamemodify("./.repro", ":p")

-- set stdpaths to use .repro
for _, name in ipairs { "config", "data", "state", "cache" } do
  vim.env[("XDG_%s_HOME"):format(name:upper())] = root .. "/" .. name
end

-- bootstrap lazy
local lazypath = root .. "/plugins/lazy.nvim"
if not vim.uv.fs_stat(lazypath) then
  vim.fn.system {
    "git",
    "clone",
    "--filter=blob:none",
    "https://github.com/folke/lazy.nvim.git",
    lazypath,
  }
end
vim.opt.runtimepath:prepend(lazypath)

-- install plugins
local plugins = {
  {
    "zbirenbaum/copilot.lua",
    event = "InsertEnter",
    opts = {}
  }
}

require("lazy").setup(plugins, {
  root = root .. "/plugins",
})

vim.opt.cmdheight = 0