Nvim-cmp 多次添加相同的源

Question

I'm using nvim-cmp to have a contextual window to display my LSP suggestions and my snippets but when I open multiple buffers, I have an issue: the same source is added multiple times to nvim-cmp causing the same result to be repeated in the popup.

For example, here is the result of :CmpStatus : after a few minutes of work.

# ready source names
- vsnip
- buffer
- nvim_lsp:pylsp
- vsnip
- nvim_lsp:pylsp
- nvim_lsp:pylsp

Here is my nvim-cmp config:

cmp.setup({
    snippet = {
        expand = function(args)
            vim.fn["vsnip#anonymous"](args.body)
        end,
    },
    ...
    sources = {
        { name = 'vsnip' },
        { name = 'nvim_lua' },
        { name = 'nvim_lsp' },
        { name = 'buffer', keyword_length = 3 }
    },
}

Does anyone know how to adress this issue? Is it a problem with my configuration?

Answer 1

In your cmp configuration, you can use the dup keyword for vim_item with the formatting option / format function. See help for complete-item for explanations ( :help complete-item ).

cmp.setup({
  formatting = {
    format = function(entry, vim_item)
      vim_item.menu = ({
        nvim_lsp = '[LSP]',
        vsnip = '[Snippet]',
        nvim_lua = '[Nvim Lua]',
        buffer = '[Buffer]',
      })[entry.source.name]

      vim_item.dup = ({
        vsnip = 0,
        nvim_lsp = 0,
        nvim_lua = 0,
        buffer = 0,
      })[entry.source.name] or 0

      return vim_item
    end
  }
})

You can see details in this feature request for nvim-cmp plugin.

Answer 2

I had the same problem and managed to solve the issue by realizing that cmp is somehow installed twice.

Try removing or better first renaming the cmp-packages in the plugged directory, for example

cmp-nvim-lsp to cmp-nvim-lsp_not

cml-nvim-buffer to cmp-nvim-buffer_not etc.

This did the job for me.