Use new neovim api for augroup, autocommands, and user commands

Also starts using WhichKey for more thigns, but in a very basic way.
This part should probably be refactored and tested when devising a
standard way to do mappings with descriptions.

neovim/lua/_bindings.lua

@@ -1,5 +1,6 @@
 local utils = require("utils")
 
+-- TODO: Use which-key for mappings
 local map = vim.api.nvim_set_keymap
 
 local opt_silent = { silent = true }
@@ -32,8 +33,8 @@ map("v", "pp", "p", opt_default)
 map("v", "po", '"_dP', opt_default)
 
 -- Buffer nav
-map("n", "gb", ":bnext<CR>", {})
-map("n", "gB", ":bprevious<CR>", {})
+map("n", "gb", ":bnext<CR>", { desc = "Next buffer" })
+map("n", "gB", ":bprevious<CR>", { desc = "Previous buffer" })
 
 -- Easy redo
 map("n", "U", ":redo<CR>", opt_default)

neovim/lua/_colors.lua

@@ -61,7 +61,16 @@ end
 -- Don't need the autocommand when dark-notify is installed
 local utils = require("utils")
 if not utils.is_plugin_loaded("dark-notify") then
-    utils.autocmd("auto_colors", "FocusGained * call v:lua.update_colors()")
+    -- TODO: remove check when dropping v0.6.0
+    if vim.fn.has("nvim-0.7.0") == 1 then
+        vim.api.nvim_create_autocmd({ "FocusGained" }, {
+            pattern = "*",
+            callback = _G.update_colors,
+            group = vim.api.nvim_create_augroup("auto_colors", { clear = true }),
+        })
+    else
+        utils.autocmd("auto_colors", "FocusGained * call v:lua.update_colors()")
+    end
 end
 
 -- Initial setting of colors

neovim/lua/_settings.lua

@@ -37,9 +37,16 @@ o.mouse = "a"
 
 -- Autocomplete options
 o.completeopt = "menuone,noinsert,noselect,preview"
-utils.augroup("close_preview", function()
-    vim.cmd("autocmd! CompleteDone * if pumvisible() == 0 | pclose | endif")
-end)
+-- TODO: remove check when dropping v0.6.0
+if vim.fn.has("nvim-0.7.0") == 1 then
+    vim.api.nvim_create_autocmd({ "CompleteDone" }, {
+        pattern = "*",
+        command = "if pumvisible() == 0 | pclose | endif",
+        group = vim.api.nvim_create_augroup("close_preview", { clear = true }),
+    })
+else
+    utils.autocmd("close_preview", "CompleteDone * if pumvisible() == 0 | pclose | endif", true)
+end
 
 local has = vim.fn.has
 g.is_mac = (has("mac") or has("macunix") or has("gui_macvim") or vim.fn.system("uname"):find("^darwin") ~= nil)

neovim/lua/init.lua

@@ -6,8 +6,14 @@ require("_bindings")
 require("_colors")
 
 -- Create commands
-vim.cmd("command! TagsUpdate !ctags -R .")
-vim.cmd("command! Todo grep TODO")
+-- TODO: remove check when dropping v0.6.0
+if vim.fn.has("nvim-0.7.0") == 1 then
+    vim.api.nvim_create_user_command("TagsUpdate", "!ctags -R .", { desc = "Update ctags" })
+    vim.api.nvim_create_user_command("Todo", "grep TODO", { desc = "Search for TODO tags" })
+else
+    vim.cmd("command! TagsUpdate !ctags -R .")
+    vim.cmd("command! Todo grep TODO")
+end
 
 -- Use better grep programs
 if vim.fn.executable("rg") == 1 then
@@ -20,6 +26,7 @@ elseif vim.fn.executable("ack") == 1 then
 end
 
 -- Disable polyglot for langauges I've added special support for
+-- TODO: Can this be moved somewhere better?
 vim.g.polyglot_disabled = { "go", "rust" }
 
 -- Plugins

neovim/lua/plugins.lua

@@ -131,6 +131,7 @@ use({
 use({
     "tomtom/tcomment_vim",
     config = function()
+        -- TODO: use which-key?
         vim.api.nvim_set_keymap("n", "//", ":TComment<CR>", { silent = true, noremap = true })
         vim.api.nvim_set_keymap("v", "//", ":TCommentBlock<CR>", { silent = true, noremap = true })
     end,
@@ -140,7 +141,12 @@ use({
 use({
     "FooSoft/vim-argwrap",
     config = function()
-        vim.api.nvim_set_keymap("n", "<Leader>a", "<cmd>ArgWrap<CR>", { silent = true, noremap = true })
+        -- TODO: use which-key?
+        vim.api.nvim_set_keymap("n", "<Leader>a", "<cmd>ArgWrap<CR>", {
+            silent = true,
+            noremap = true,
+            desc = "Wrap or unwrap arguments",
+        })
     end,
 })
 
@@ -149,6 +155,7 @@ use({
     "tpope/vim-fugitive",
     config = function()
         local opts = { silent = true, noremap = true }
+        -- TODO: use which-key?
         vim.api.nvim_set_keymap("n", "gb", "<cmd>Git blame<CR>", opts)
         vim.api.nvim_set_keymap("n", "gc", "<cmd>Git commit<CR>", opts)
         vim.api.nvim_set_keymap("n", "gd", "<cmd>Git diff<CR>", opts)
@@ -161,6 +168,7 @@ use({
 use({
     "milkypostman/vim-togglelist",
     config = function()
+        -- TODO: use which-key?
         vim.api.nvim_set_keymap("n", "<F6>", ":call ToggleQuickfixList()<CR>", { silent = true, noremap = true })
         vim.api.nvim_set_keymap("n", "<F7>", ":call ToggleLocationList()<CR>", { silent = true, noremap = true })
     end,

neovim/lua/utils.lua

@@ -1,30 +1,32 @@
 -- luacheck: globals packer_plugins
 local M = {}
 
--- Utils taken from https://github.com/zzzeyez/dots/blob/master/nvim/lua/utils.lua
 -- Key mapping
 function M.map(mode, key, result, opts)
-    vim.fn.nvim_set_keymap(mode, key, result, {
-        noremap = true,
-        silent = opts.silent or false,
-        expr = opts.expr or false,
-        script = opts.script or false,
-    })
-end
-
-function M.augroup(group, fn)
-    vim.api.nvim_command("augroup " .. group)
-    vim.api.nvim_command("autocmd!")
-    fn()
-    vim.api.nvim_command("augroup END")
+    M.try_require("which-key", function(wk)
+        local mappings = {}
+        mappings[key] = result
+        wk.register(mappings, {
+            mode = mode,
+            noremap = true,
+            silent = opts.silent or false,
+            expr = opts.expr or false,
+            script = opts.script or false,
+        })
+    end, function()
+        vim.fn.nvim_set_keymap(mode, key, result, {
+            noremap = true,
+            silent = opts.silent or false,
+            expr = opts.expr or false,
+            script = opts.script or false,
+        })
+    end)
 end
 
 function M.get_color(synID, what, mode)
     return vim.fn.synIDattr(vim.fn.synIDtrans(vim.fn.hlID(synID)), what, mode)
 end
 
--- end zzzeyez utils
-
 -- Create an autocmd
 function M.autocmd(group, cmds, clear)
     clear = clear == nil and false or clear