为什么我的 neovim LSP 配置文件中的按键绑定不起作用？

Question

local M = {}

-- TODO: backfill this to template
M.setup = function()
  local signs = {
    { name = "DiagnosticSignError", text = "" },
    { name = "DiagnosticSignWarn", text = "" },
    { name = "DiagnosticSignHint", text = "" },
    { name = "DiagnosticSignInfo", text = "" },
  }

  for _, sign in ipairs(signs) do
    vim.fn.sign_define(sign.name, { texthl = sign.name, text = sign.text, numhl = _ })
  end

  local config = {
    -- disable virtual text
    virtual_text = false,
    -- show signs
    signs = {
      active = signs,
    },
    update_in_insert = true,
    underline = true,
    severity_sort = true,
    float = {
      focusable = false,
      style = "minimal",
      border = "rounded",
      source = "always",
      header = "",
      prefix = "",
    },
  }

  vim.diagnostic.config(config)

  vim.lsp.handlers["textDocument/hover"] = vim.lsp.with(vim.lsp.handlers.hover, {
    border = "rounded",
  })

  vim.lsp.handlers["textDocument/signatureHelp"] = vim.lsp.with(vim.lsp.handlers.signature_help, {
    border = "rounded",
  })
end

local function lsp_highlight_document(client)
  -- Set autocommands conditional on server_capabilities
  if client.resolved_capabilities.document_highlight then
    vim.api.nvim_exec(
      [[
      augroup lsp_document_highlight
        autocmd! * <buffer>
        autocmd CursorHold <buffer> lua vim.lsp.buf.document_highlight()
        autocmd CursorMoved <buffer> lua vim.lsp.buf.clear_references()
      augroup END
    ]],
      false
    )
  end
end

local function lsp_keymaps(bufnr)
  local opts = { noremap = true, silent = true }
  vim.api.nvim_buf_set_keymap(bufnr, "n", "gD", "<cmd>lua vim.lsp.buf.declaration()<CR>", opts)
  vim.api.nvim_buf_set_keymap(bufnr, "n", "gd", "<cmd>lua vim.lsp.buf.definition()<CR>", opts)
  vim.api.nvim_buf_set_keymap(bufnr, "n", "K", "<cmd>lua vim.lsp.buf.hover()<CR>", opts)
  vim.api.nvim_buf_set_keymap(bufnr, "n", "gi", "<cmd>lua vim.lsp.buf.implementation()<CR>", opts)
  vim.api.nvim_buf_set_keymap(bufnr, "n", "<C-k>", "<cmd>lua vim.lsp.buf.signature_help()<CR>", opts)
  -- vim.api.nvim_buf_set_keymap(bufnr, "n", "<leader>rn", "<cmd>lua vim.lsp.buf.rename()<CR>", opts)
  vim.api.nvim_buf_set_keymap(bufnr, "n", "gr", "<cmd>lua vim.lsp.buf.references()<CR>", opts)
  vim.api.nvim_buf_set_keymap(bufnr, "n", "<leader>ca", "<cmd>lua vim.lsp.buf.code_action()<CR>", opts)
  vim.api.nvim_buf_set_keymap(bufnr, "n", "<leader>f", "<cmd>lua vim.diagnostic.open_float()<CR>", opts)
  vim.api.nvim_buf_set_keymap(bufnr, "n", "[d", '<cmd>lua vim.diagnostic.goto_prev({ border = "rounded" })<CR>', opts)
  vim.api.nvim_buf_set_keymap(
    bufnr,
    "n",
    "gl",
    '<cmd>lua vim.lsp.diagnostic.show_line_diagnostics({ border = "rounded" })<CR>',
    opts
  )
  vim.api.nvim_buf_set_keymap(bufnr, "n", "]d", '<cmd>lua vim.diagnostic.goto_next({ border = "rounded" })<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, "n", "<leader>q", "<cmd>lua vim.diagnostic.setloclist()<CR>", opts)
  vim.cmd [[ command! Format execute 'lua vim.lsp.buf.formatting()' ]]
end

M.on_attach = function(client, bufnr)
  lsp_keymaps(bufnr)
  lsp_highlight_document(client)
end

local capabilities = vim.lsp.protocol.make_client_capabilities()

local status_ok, cmp_nvim_lsp = pcall(require, "cmp_nvim_lsp")
if not status_ok then
  return
end

M.capabilities = cmp_nvim_lsp.update_capabilities(capabilities)

return M

此文件是我的 lspconfig 的一部分。 LSP 本身似乎设置正确，因为当我运行时

lua vim.lsp.buf.hover()

它可以工作，问题是相同的命令不适用于此文件中声明的键绑定。这些键绑定似乎都不起作用。我不明白问题是什么，任何帮助将不胜感激。

Answer 1

这取决于您使用的 NeoVim 版本。如果您运行的是 0.7，您可以更改您的调用

vim.api.nvim_buf_set_keymap(bufnr, ...

对于

vim.keymap.set(mode, shortcut, command, opts)

此 API 允许在 opts

buffer

中添加一个附加参数，如果您将此值设置为

true

或

1

，它会将当前缓冲区分配给它，或者在您的情况下，您可以将

bufnr

分配给缓冲区 opts 参数.

对于这个例子，你正在尝试运行，你可以写

vim.keymap.set('n', 'K', vim.lsp.buf.hover, { buffer = bufnr, noremap = true, silent = true })

此外，您还应该为 LSP 的每个配置配置 on_attach 和功能。

例如:

require('lspconfig')['pyright'].setup {
  on_attach = on_attach,
  capabilities = capabilities,
}

根据我的理解，在没有如何调用此 lua 文件的上下文的情况下，您当前正在执行的操作将作为

lspconfig

on_attach 和功能函数的设置配置返回，而不将其分配给任何配置。

参考：https://github.com/neovim/nvim-lspconfig#troubleshooting

Answer 2

我有 0.9.4 版本的 Neovim 和 vim.api.nvim_set_keymap(mode、shortcut、command、opts) 对我有用