nvim: leader use space, fix keybing show

hl todo, note ...

.config/nvim/init.lua

@@ -1,15 +1,15 @@
+-- Set <space> as the leader key
+-- See `:help mapleader`
+--  NOTE: Must happen before plugins are loaded (otherwise wrong leader will be used)
+vim.g.mapleader = " "
+vim.g.maplocalleader = " "
+
 vim.cmd([[
 set runtimepath^=~/.vim runtimepath+=~/.vim/after
 let &packpath = &runtimepath
 source ~/.vimrc
 ]])
 
--- Set <space> as the leader key
--- See `:help mapleader`
---  NOTE: Must happen before plugins are loaded (otherwise wrong leader will be used)
--- vim.g.mapleader = ' '
---vim.g.maplocalleader = ' '
-
 -- Set to true if you have a Nerd Font installed and selected in the terminal
 vim.g.have_nerd_font = true
 
@@ -25,6 +25,17 @@ vim.keymap.set("n", "]d", vim.diagnostic.goto_next, { desc = "Go to next [D]iagn
 vim.keymap.set("n", "<leader>e", vim.diagnostic.open_float, { desc = "Show diagnostic [E]rror messages" })
 vim.keymap.set("n", "<leader>q", vim.diagnostic.setloclist, { desc = "Open diagnostic [Q]uickfix list" })
 
+-- Highlight when yanking (copying) text
+--  Try it with `yap` in normal mode
+--  See `:help vim.highlight.on_yank()`
+vim.api.nvim_create_autocmd("TextYankPost", {
+	desc = "Highlight when yanking (copying) text",
+	group = vim.api.nvim_create_augroup("kickstart-highlight-yank", { clear = true }),
+	callback = function()
+		vim.highlight.on_yank()
+	end,
+})
+
 local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
 if not (vim.uv or vim.loop).fs_stat(lazypath) then
 	vim.fn.system({
@@ -48,6 +59,10 @@ require("lazy").setup({
 	{ -- Useful plugin to show you pending keybinds.
 		"folke/which-key.nvim",
 		event = "VimEnter", -- Sets the loading event to 'VimEnter'
+		init = function()
+			vim.o.timeout = true
+			vim.o.timeoutlen = 300
+		end,
 		config = function() -- This is the function that runs, AFTER loading
 			require("which-key").setup()
 
@@ -84,6 +99,13 @@ require("lazy").setup({
 	"rhysd/vim-grammarous",
 	"liuchengxu/vista.vim",
 	"https://git.mathux.org/mathieu/taglist.git",
+	-- Highlight todo, notes, etc in comments
+	{
+		"folke/todo-comments.nvim",
+		event = "VimEnter",
+		dependencies = { "nvim-lua/plenary.nvim" },
+		opts = { signs = false },
+	},
 	{
 		"nvim-treesitter/nvim-treesitter",
 		build = ":TSUpdate",