From 2e37e28cb0c7e9f4479229380d8202e7192c5f99 Mon Sep 17 00:00:00 2001
From: Bobby Bingham <koorogi@koorogi.info>
Date: Sat, 2 Jul 2022 20:38:57 -0500
Subject: nvim: add autocomplete

---
 nvim/.config/nvim/lua/cmp_config.lua | 51 ++++++++++++++++++++++++++++++++++++
 nvim/.config/nvim/lua/lsp_config.lua |  5 ++++
 nvim/.config/nvim/lua/plugins.lua    | 13 +++++++++
 3 files changed, 69 insertions(+)
 create mode 100644 nvim/.config/nvim/lua/cmp_config.lua

diff --git a/nvim/.config/nvim/lua/cmp_config.lua b/nvim/.config/nvim/lua/cmp_config.lua
new file mode 100644
index 0000000..fa1610f
--- /dev/null
+++ b/nvim/.config/nvim/lua/cmp_config.lua
@@ -0,0 +1,51 @@
+local cmp = require('cmp')
+
+cmp.setup({
+	snippet = {
+		-- REQUIRED - you must specify a snippet engine
+		expand = function(args)
+			vim.fn["vsnip#anonymous"](args.body) -- For `vsnip` users.
+			-- require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
+			-- require('snippy').expand_snippet(args.body) -- For `snippy` users.
+			-- vim.fn["UltiSnips#Anon"](args.body) -- For `ultisnips` users.
+		end,
+	},
+	window = {
+		-- completion = cmp.config.window.bordered(),
+		-- documentation = cmp.config.window.bordered(),
+	},
+	mapping = cmp.mapping.preset.insert({
+		['<C-b>'] = cmp.mapping.scroll_docs(-4),
+		['<C-f>'] = cmp.mapping.scroll_docs(4),
+		['<C-Space>'] = cmp.mapping.complete(),
+		['<C-e>'] = cmp.mapping.abort(),
+		['<CR>'] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
+	}),
+	sources = cmp.config.sources({
+		{ name = 'nvim_lsp' },
+		{ name = 'vsnip' }, -- For vsnip users.
+		-- { name = 'luasnip' }, -- For luasnip users.
+		-- { name = 'ultisnips' }, -- For ultisnips users.
+		-- { name = 'snippy' }, -- For snippy users.
+		{ name = 'path' },
+	})
+})
+
+-- Use buffer source for `/` (if you enabled `native_menu`, this won't work anymore).
+cmp.setup.cmdline('/', {
+	mapping = cmp.mapping.preset.cmdline(),
+	sources = {
+		{ name = 'buffer' }
+	}
+})
+
+-- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
+cmp.setup.cmdline(':', {
+	mapping = cmp.mapping.preset.cmdline(),
+	sources = cmp.config.sources({
+		{ name = 'path' }
+	}, {
+		{ name = 'cmdline' }
+	})
+})
+
diff --git a/nvim/.config/nvim/lua/lsp_config.lua b/nvim/.config/nvim/lua/lsp_config.lua
index 4bb64bf..55f4d6d 100644
--- a/nvim/.config/nvim/lua/lsp_config.lua
+++ b/nvim/.config/nvim/lua/lsp_config.lua
@@ -50,12 +50,17 @@ local on_attach = function(client, bufnr)
 	end
 end
 
+-- The nvim-cmp almost supports LSP's capabilities so You should advertise it to LSP servers..
+local capabilities = vim.lsp.protocol.make_client_capabilities()
+capabilities = require('cmp_nvim_lsp').update_capabilities(capabilities)
+
 -- Use a loop to conveniently call 'setup' on multiple servers and
 -- map buffer local keybindings when the language server attaches
 local servers = { 'tsserver', 'zls' }
 for _, lsp in pairs(servers) do
 	lspconfig[lsp].setup({
 		on_attach = on_attach,
+		capabilities = capabilities,
 		flags = {
 			-- This will be the default in neovim 0.7+
 			debounce_text_changes = 150,
diff --git a/nvim/.config/nvim/lua/plugins.lua b/nvim/.config/nvim/lua/plugins.lua
index ae53f90..18d0fd0 100644
--- a/nvim/.config/nvim/lua/plugins.lua
+++ b/nvim/.config/nvim/lua/plugins.lua
@@ -39,10 +39,23 @@ return require('packer').startup(function()
 		requires = {
 			"jose-elias-alvarez/null-ls.nvim",
 			"jose-elias-alvarez/nvim-lsp-ts-utils",
+			"hrsh7th/cmp-nvim-lsp'",
 		},
 		config = function() require('lsp_config') end
 	}
 
+	use {
+		'hrsh7th/nvim-cmp',
+		requires = {
+			'hrsh7th/cmp-nvim-lsp',
+			'hrsh7th/cmp-buffer',
+			'hrsh7th/cmp-path',
+			'hrsh7th/cmp-cmdline',
+			'hrsh7th/vim-vsnip',
+		},
+		config = function() require('cmp_config') end
+	}
+
 	use {
 		'nvim-neo-tree/neo-tree.nvim',
 		requires = { 
-- 
cgit v1.2.3