Fix nvim-cmp keymap

lua/plugins/core.lua

@@ -23,6 +23,28 @@ return {
       { "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",
 	-- stylua: ignore