Update some plugins and config

lua/conf/cmp.lua

@@ -1,4 +1,5 @@
 local cmp = require'cmp'
+
 cmp.setup({
   snippet = {
     expand = function(args)
@@ -7,6 +8,8 @@ cmp.setup({
   },
   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.close(),
     ['<CR>'] = cmp.mapping.confirm({
@@ -21,12 +24,28 @@ cmp.setup({
       end
     end
   },
-  sources = {
+  sources = cmp.config.sources({
     { name = 'nvim_lsp' },
-    --{ name = 'buffer' },
     { name = 'vsnip' },
+  },{
+    { name = 'buffer' },
     --{ name = 'path' },
+  }),
+})
+
+cmp.setup.cmdline({ '/', '?' }, {
+  mapping = cmp.mapping.preset.cmdline(),
+  sources = {
+    { name = 'buffer' }
   }
 })
-local capabilities = vim.lsp.protocol.make_client_capabilities()
-capabilities = require('cmp_nvim_lsp').update_capabilities(capabilities)
+
+-- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
+cmp.setup.cmdline(':', {
+  mapping = cmp.mapping.preset.cmdline(),
+  sources = cmp.config.sources({
+    { name = 'path' }
+  }, {
+    { name = 'cmdline' }
+  })
+})