improve autocomplete behavior

lua/config/cmp.lua

@@ -5,23 +5,20 @@ function M.setup()
 		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
-
 	local cmp = require "cmp"
 	local lspkind = require "lspkind"
-
 	local cmp_autopairs = require "nvim-autopairs.completion.cmp"
+	local luasnip = require "luasnip"
 	cmp.event:on("confirm_done", cmp_autopairs.on_confirm_done { map_char = { tex = "" } })
-
+	vim.o.pumheight = 10
 	cmp.setup {
-		completion = { completeopt = "menu,menuone,noinsert", keyword_length = 1,},
-		experimental = { native_menu = false, ghost_text = false },
-
+		completion = { completeopt = "menu,menuone,noinsert,noselect", keyword_length = 1, },
+		experimental = { native_menu = false, ghost_text = true },
 		snippet = {
 			expand = function(args)
-				require("luasnip").lsp_expand(args.body)
+				luasnip.lsp_expand(args.body)
 			end,
 		},
-
 		formatting = {
 			-- format = function(entry, vim_item)
 			-- 	vim_item.menu = ({
@@ -50,21 +47,21 @@ function M.setup()
 			["<C-j>"] = cmp.mapping(cmp.mapping.select_next_item(), { "i", "c" }),
 			["<C-b>"] = cmp.mapping(cmp.mapping.scroll_docs(-4), { "i", "c" }),
 			["<C-f>"] = cmp.mapping(cmp.mapping.scroll_docs(4), { "i", "c" }),
-      ["<C-Space>"] = cmp.mapping(cmp.mapping.complete(), { "i", "c" }),
-      ["<C-e>"] = cmp.mapping { i = cmp.mapping.close(), c = cmp.mapping.close() },
-			["<S-CR>"] = cmp.mapping {
-				i = cmp.mapping.confirm { behavior = cmp.ConfirmBehavior.Replace, select = false },
-				c = function(fallback)
+			["<C-Space>"] = cmp.mapping(function()
 				if cmp.visible() then
-						cmp.confirm { behavior = cmp.ConfirmBehavior.Replace, select = false }
+					cmp.close()
 				else
-						fallback()
+					cmp.complete()
 				end
-				end,
-			},
+			end, { "i", "c" }),
+			["<C-e>"] = cmp.mapping { i = cmp.mapping.close(), c = cmp.mapping.close() },
+			["<CR>"] = cmp.mapping(cmp.mapping.confirm({ behavior = cmp.ConfirmBehavior.Insert, select = false }),
+				{ "i", "c" }),
 			["<Tab>"] = cmp.mapping(function(fallback)
 				if cmp.visible() then
 					cmp.select_next_item()
+				elseif luasnip.expand_or_jumpable() then
+					luasnip.expand_or_jump()
 				elseif has_words_before() then
 					cmp.complete()
 				else
@@ -82,6 +79,7 @@ function M.setup()
 		},
 
 		sources = {
+			{ name = "luasnip" },
 			{ name = "nvim_lsp" },
 			{ name = "treesitter" },
 			{ name = "buffer" },
@@ -94,7 +92,6 @@ function M.setup()
       winhighlight = "NormalFloat:NormalFloat,FloatBorder:TelescopeBorder",
     }, ]]
 	}
-	
 	cmp.setup.cmdline("/", {
 		sources = {
 			{ name = "buffer" },

lua/config/luasnip.lua

@@ -6,6 +6,8 @@ function M.setup()
   luasnip.config.set_config {
     history = false,
     updateevents = "TextChanged,TextChangedI",
+		region_check_events = 'InsertEnter',
+		delete_check_events = 'InsertLeave',
   }
 
   require("luasnip/loaders/from_vscode").load()