write proper prose mode function (WIP)

nvim/.config/nvim/lua/prose_mode.lua

@@ -0,0 +1,17 @@
+local function setProseModeVars(on)
+	vim.opt.wrap = on
+	vim.opt.linebreak = on
+	vim.opt.number = not on
+	vim.opt.signcolumn = on and "no" or "auto"
+end
+vim.api.nvim_create_autocmd({ "Bufenter" }, {
+	callback = function()
+		if vim.bo.buftype ~= "nofile" then
+			vim.cmd("PencilSoft")
+			setProseModeVars(true)
+		else
+			vim.cmd("PencilOff")
+			setProseModeVars(false)
+		end
+	end,
+})