SpaceVim/config/plugins/nvim-cmp.vim

lua <<EOF
  -- Setup nvim-cmp.
  local cmp = require'cmp'

  cmp.setup({
    mapping = cmp.mapping.preset.insert({
      ['<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-y>'] = cmp.config.disable, -- Specify `cmp.config.disable` if you want to remove the default `<C-y>` mapping.
      ['<C-e>'] = cmp.mapping({
        i = cmp.mapping.abort(),
        c = cmp.mapping.close(),
      }),
      ['<CR>'] = cmp.mapping.confirm({ select = true }),
      ['<Tab>'] = function(fallback)
        if cmp.visible() then
          cmp.select_next_item()
        else
          fallback()
        end
      end,
      ['<S-Tab>'] = function(fallback)
        if cmp.visible() then
          cmp.select_prev_item()
        else
          fallback()
        end
      end,
    }),
    formatting = {
      format = require("lspkind").cmp_format({with_text = true, menu = ({
          buffer = "[Buffer]",
        })}),
    },
    sources = cmp.config.sources({
      { name = 'nvim_lsp' },
    }, {
      { name = 'buffer' },
    }, {
      { name = 'path' },
    })
  })
EOF