Neovim出现双补全菜单，如何仅保留nvim-cmp补全？

问题描述 #

将Neovim作为主力IDE使用，已配置nvim-cmp补全插件，整体效果良好，但偶尔会弹出Neovim默认关键字补全窗口。尝试过禁用补全插件、设置相关变量、修改nvim-cmp配置，但均未解决问题。截图显示两个补全菜单，底部的为无法选中的默认补全窗口，求助如何移除该默认补全窗口。

当前nvim-cmp配置 #

set.completeopt = "menu,menuone,noselect"

cmp.setup({
    completion = {
        autocomplete = false,
    },

    opts = function(_, opts)
        -- opts parameter is the default options table
        -- the function is lazy loaded so cmp is able to be required
        local cmp = require("cmp")
        -- modify the sources part of the options table
        opts.sources = cmp.config.sources({
            { name = "nvim_lsp", priority = 1000 },
            { name = "luasnip", priority = 750 },
            { name = "buffer", priority = 500 },
            { name = "path", priority = 250 },
            { name = "vim-dadbod-completion", priority = 700 }, -- add new source
        })
        -- return the new table to be used
        return opts
    end,

    snippet = {
        expand = function(args)
            luasnip.lsp_expand(args.body)
        end,
    },
    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({
            behavior = cmp.ConfirmBehavior.Replace,
            select = true,
        }),
    }),

    sources = {
        { name = "nvim_lsp" },
        { name = "luasnip" },
        { name = "buffer" },
        { name = "path" },
    },

    formatting = {
        format = function(entry, item)
            item.kind = lsp_symbols[item.kind]
            item.menu = ({
                buffer = "[Buffer]",
                nvim_lsp = "[LSP]",
                luasnip = "[Snippet]",
                neorg = "[Neorg]",
            })[entry.source.name]

            return item
        end,
    },
})

解决方案 #

1. 彻底禁用Vim原生补全 #

在Neovim配置中添加以下设置，直接关闭原生关键字补全的触发逻辑：

set completeopt=menu,menuone,noselect
set completefunc=
set omnifunc=

如果用Lua配置：

vim.opt.completeopt = "menu,menuone,noselect"
vim.opt.completefunc = ""
vim.opt.omnifunc = ""

2. 修复nvim-cmp配置冲突 #

你的配置中同时存在外层sources字段和opts函数内的sources修改，这会导致配置加载异常。删除外层的sources字段，只保留opts函数内的定义，避免重复配置：

cmp.setup({
    completion = {
        autocomplete = false,
    },

    opts = function(_, opts)
        local cmp = require("cmp")
        opts.sources = cmp.config.sources({
            { name = "nvim_lsp", priority = 1000 },
            { name = "luasnip", priority = 750 },
            { name = "vim-dadbod-completion", priority = 700 },
            { name = "buffer", priority = 500 },
            { name = "path", priority = 250 },
        })
        return opts
    end,

    -- 其他配置（snippet、mapping、formatting）保持不变
})

3. 拦截原生补全触发事件 #

如果前两种方法无效，通过autocmd在nvim-cmp窗口显示时，强制清空原生补全列表：

vim.api.nvim_create_autocmd("CompleteChanged", {
    callback = function()
        if require("cmp").visible() then
            vim.fn.complete(0, {})
        end
    end,
})

4. 排查插件干扰 #

部分语法检查、代码高亮类插件可能意外触发原生补全。暂时禁用非必要插件，逐一排查是否有插件导致该问题。

内容的提问来源于stack exchange，提问作者Aleksey Likhodievski