nvim/plugin/centerscroll.lua

-- " from https://vi.stackexchange.com/a/26055
-- augroup KeepCentered
--   autocmd!
--   autocmd CursorMoved * if &buftype == '' | normal! zz | endif
-- augroup END

vim.api.nvim_create_augroup("KeepCentered", { clear = true })
vim.api.nvim_create_autocmd("CursorMoved", {
	group = "KeepCentered",
	pattern = '*',
	callback = function()
		if vim.o.buftype == '' then
			vim.cmd([[normal! zz]])
		end
	end,
})