How do I rename a symbol under the cursor using Neovim's built-in LSP without any plugin configuration?

Explanation

Since Neovim 0.10, a set of default LSP keymaps is automatically registered whenever a language server attaches to a buffer. One of the most useful is grr, which triggers a rename refactor on the symbol under the cursor — no nvim-lspconfig mapping or manual vim.keymap.set required.

How it works

Neovim 0.10 registers these keymaps via an internal LspAttach autocommand whenever an LSP client attaches:

grr  " vim.lsp.buf.rename() — rename the symbol
gra  " vim.lsp.buf.code_action() — trigger code action
gri  " vim.lsp.buf.implementation() — go to implementation
gO   " vim.lsp.buf.document_symbol() — list document symbols

In Insert mode, <C-S> calls vim.lsp.buf.signature_help().

Example

With a Python file open and pyright attached:

1. Place cursor on a function name: my_func
2. Press grr
3. A prompt appears: "New name:"
4. Type the new name and press Enter
5. All references in the project are renamed

Tips

• These keymaps are only active in buffers where an LSP client has attached; they do not conflict with mappings in other buffers
• You can verify which LSP clients are attached with :checkhealth lsp or :LspInfo
• To disable the default keymaps, set vim.g.lsp_enable_default_keymaps = false before the LspAttach event fires
• The gra code action works on both the current line and a visual selection