a bit sloppy but working

lua/autocmd.lua

@@ -0,0 +1,65 @@
+local api = vim.api
+local settings = require("user-conf")
+
+--- Remove all trailing whitespace on save
+--local TrimWhiteSpaceGrp = api.nvim_create_augroup("TrimWhiteSpaceGrp", { clear = true })
+--api.nvim_create_autocmd("BufWritePre", {
+--	command = [[:%s/\s\+$//e]],
+--	group = TrimWhiteSpaceGrp,
+--})
+
+-- don't auto comment new line
+api.nvim_create_autocmd("BufEnter", { command = [[set formatoptions-=cro]] })
+
+-- Close nvim if NvimTree is only running buffer
+api.nvim_create_autocmd(
+	"BufEnter",
+	{ command = [[if winnr('$') == 1 && bufname() == 'NvimTree_' . tabpagenr() | quit | endif]] }
+)
+
+-- Highlight on yank
+local yankGrp = api.nvim_create_augroup("YankHighlight", { clear = true })
+api.nvim_create_autocmd("TextYankPost", {
+	command = "silent! lua vim.highlight.on_yank()",
+	group = yankGrp,
+})
+-- go to last loc when opening a buffer
+api.nvim_create_autocmd(
+	"BufReadPost",
+	{ command = [[if line("'\"") > 1 && line("'\"") <= line("$") | execute "normal! g`\"" | endif]] }
+)
+-- windows to close with "q"
+api.nvim_create_autocmd(
+	"FileType",
+	{ pattern = { "help", "startuptime", "qf", "lspinfo" }, command = [[nnoremap <buffer><silent> q :close<CR>]] }
+)
+api.nvim_create_autocmd("FileType", { pattern = "man", command = [[nnoremap <buffer><silent> q :quit<CR>]] })
+
+-- show cursor line only in active window
+local cursorGrp = api.nvim_create_augroup("CursorLine", { clear = true })
+api.nvim_create_autocmd({ "InsertLeave", "WinEnter" }, {
+	pattern = "*",
+	command = "set cursorline",
+	group = cursorGrp,
+})
+api.nvim_create_autocmd(
+	{ "InsertEnter", "WinLeave" },
+	{ pattern = "*", command = "set nocursorline", group = cursorGrp }
+)
+
+-- Enable spell checking for certain file types
+api.nvim_create_autocmd(
+	{ "BufRead", "BufNewFile" },
+	{ pattern = { "*.txt", "*.md", "*.tex" }, command = "setlocal spell" }
+)
+if settings.packer_auto_sync then
+	-- source plugins.lua and run PackerSync on save
+	local sync_packer = function()
+		vim.cmd("runtime lua/plugins.lua")
+		require("packer").sync()
+	end
+	api.nvim_create_autocmd({ "BufWritePost" }, {
+		pattern = { "plugins.lua" },
+		callback = sync_packer,
+	})
+end