Remove all default mappings

doc/cmp.txt

@@ -91,18 +91,12 @@ NOTE:
         -- completion = cmp.config.window.bordered(),
         -- documentation = cmp.config.window.bordered(),
       },
-      mapping = {
-        ['<C-d>'] = 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.abort(),
-          c = cmp.mapping.close(),
-        }),
-        -- Accept currently selected item. If none selected, `select` first item.
-        -- Set `select` to `false` to only confirm explicitly selected items.
+      mapping = cmp.mapping.preset.insert({
+        ['<C-d>'] = cmp.mapping.scroll_docs(-4),
+        ['<C-f>'] = cmp.mapping.scroll_docs(4),
+        ['<C-Space>'] = cmp.mapping.complete(),
         ['<CR>'] = cmp.mapping.confirm({ select = true }),
-      },
+      }),
       sources = cmp.config.sources({
         { name = 'nvim_lsp' },
         { name = 'vsnip' }, -- For vsnip users.
@@ -116,6 +110,7 @@ NOTE:
 
     -- `/` cmdline setup.
     cmp.setup.cmdline('/', {
+      mapping = cmp.mapping.preset.cmdline(),
       sources = {
         { name = 'buffer' }
       }
@@ -123,6 +118,7 @@ NOTE:
 
     -- `:` cmdline setup.
     cmp.setup.cmdline(':', {
+      mapping = cmp.mapping.preset.cmdline(),
       sources = cmp.config.sources({
         { name = 'path' }
       }, {