nvim/lua/plugins/cmp.lua

return {
	{
		"hrsh7th/nvim-cmp",
		-- load cmp on InsertEnter
		event = "InsertEnter",
		-- these dependencies will only be loaded when cmp loads
		-- dependencies are always lazy-loaded unless specified otherwise
		dependencies = {
			"hrsh7th/cmp-nvim-lsp",
			"hrsh7th/cmp-buffer",
			'hrsh7th/cmp-path',
			'hrsh7th/cmp-cmdline',
			--  'hrsh7th/cmp-vsnip',
			--  'hrsh7th/vim-vsnip',
			--  'hrsh7th/vim-vsnip-integ',
			'L3MON4D3/LuaSnip',
			'saadparwaiz1/cmp_luasnip',
			'onsails/lspkind.nvim',
			{
				'zbirenbaum/copilot-cmp',
				dependencies = { "hrsh7th/nvim-cmp",
					{
						'zbirenbaum/copilot.lua',
						opts = {
							suggestion = { enabled = false },
							panel = { enabled = false },
							filetypes = {
								mail = false,
								text = false,
							}
						}
					},
				},
				config = function()
					require("copilot_cmp").setup()
				end
			},
		},
		config = function()
			local cmp = require('cmp')
			local lspkind = require('lspkind')
			local luasnip = require('luasnip')
			local has_words_before = function()
				unpack = unpack or table.unpack
				local line, col = unpack(vim.api.nvim_win_get_cursor(0))
				return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
			end

			cmp.setup({
				snippet = {
					expand = function(args)
						--vim.fn["vsnip#anonymous"](args.body)
						require('luasnip').lsp_expand(args.body)
					end,
				},
				mapping = {
					['<C-y>'] = cmp.mapping.confirm({ select = true }),
					['<C-b>'] = cmp.mapping.scroll_docs(-4),
					['<C-f>'] = cmp.mapping.scroll_docs(4),
					['<C-Space>'] = cmp.mapping.complete(),
					['<C-e>'] = cmp.mapping.abort(),
					['<C-CR>'] = cmp.mapping.confirm({
						behavior = cmp.ConfirmBehavior.Replace,
						select = true,
					}),
					["<CR>"] = cmp.mapping({
						i = function(fallback)
							if cmp.visible() and cmp.get_active_entry() then
								cmp.confirm({ behavior = cmp.ConfirmBehavior.Replace, select = false })
							else
								fallback()
							end
						end,
						s = cmp.mapping.confirm({ select = true }),
						c = cmp.mapping.confirm({ behavior = cmp.ConfirmBehavior.Replace, select = true }),
					}),
					["<Tab>"] = cmp.mapping(function(fallback)
						if cmp.visible() then
							cmp.select_next_item()
							-- You could replace the expand_or_jumpable() calls with expand_or_locally_jumpable()
							-- they way you will only jump inside the snippet region
						elseif luasnip.expand_or_jumpable() then
							luasnip.expand_or_jump()
						elseif has_words_before() then
							cmp.complete()
						else
							fallback()
						end
					end, { "i", "s" }),
					["<S-Tab>"] = cmp.mapping(function(fallback)
						if cmp.visible() then
							cmp.select_prev_item()
						elseif luasnip.jumpable(-1) then
							luasnip.jump(-1)
						else
							fallback()
						end
					end, { "i", "s" }),
				},
				sources = cmp.config.sources({
					{ name = 'nvim_lsp' },
					{ name = 'luasnip' },
					{ name = "copilot" },
				}, {
					{ name = 'buffer', option = { keyword_pattern = [[\k\+]] } },
					--{ name = 'path' },
				}),
				formatting = {
					format = lspkind.cmp_format({
						mode = 'symbol_text', -- show only symbol annotations
						maxwidth = 80, -- prevent the popup from showing more than provided characters (e.g 50 will not show more than 50 characters)
						ellipsis_char = '…', -- when popup menu exceed maxwidth, the truncated part would show ellipsis_char instead (must define maxwidth first)
						symbol_map = { Copilot = "" },
					})
				},
			})
		end,
	},
}