vim.opt_local.formatoptions:remove("r")  -- don't insert comment leader after enter
vim.opt_local.formatoptions:remove("n")  -- don't indent after enumerations
vim.opt_local.formatoptions:append("w")  -- trailing space continues paragraph
vim.opt_local.formatoptions:append("a")  -- auto format paragraphs

vim.opt_local.cpoptions:append("I")  -- don't delete indent when moving up/down