Fix nvim-cmp keymap

lua/plugins/core.lua

@@ -17,11 +17,33 @@ return {
     lazy = false,
   },
   {
-	"folke/flash.nvim",
-	keys = {
-	  { "s", mode = { "n", "x", "o" }, false },
-	  { "S", mode = { "n", "x", "o" }, false },
-	},
+    "folke/flash.nvim",
+    keys = {
+      { "s", mode = { "n", "x", "o" }, false },
+      { "S", mode = { "n", "x", "o" }, false },
+    },
+  },
+  {
+    "hrsh7th/nvim-cmp",
+    opts = function(_, opts)
+      local cmp = require("cmp")
+      opts.mapping["<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 }),
+      })
+      opts.mapping["<S-CR>"] = nil
+      opts.mapping["<Tab>"] = cmp.mapping.select_next_item({ behavior = cmp.SelectBehavior.Insert })
+      opts.mapping["<S-Tab>"] = cmp.mapping.select_prev_item({ behavior = cmp.SelectBehavior.Insert })
+      opts.completion.completeopt = "menu,menuone,noselect"
+      opts.preselect = cmp.PreselectMode.None
+    end,
   },
   {
     "L3MON4D3/LuaSnip",