Neovim

Updated: 24 September 2025

Working directory of current window

:lua print(vim.fn.getcwd(0, 0))

Get current window number

:lua print(vim.api.nvim_get_current_win())

Get current tabpage number

:lua print(vim.api.nvim_get_current_tabpage())

This might be how it works:

• Neovim (has own working_directory)
  • Tabpage num 1 (has own working_directory)
  • Window num 1010 (has own working_directory)
  • Window num 1011 (has own working_directory)
  • Tabpage num 2 (has own working_directory)
  • Window num 1012 (has own working_directory)
  • Window num 1013 (has own working_directory)

Also see :help tcd

Updated: 25 November 2024

Help
https://neovim.discourse.group/
https://github.com/neovim/neovim/discussions

Guide to using Lua in Nvim https://neovim.io/doc/user/lua-guide.html

---

~/.config/nvim/init.lua

-- Level 1 the function
function Foo() print 'bar' end
-- :lua Foo()

-- Level 2 user command using the function
vim.api.nvim_create_user_command('Foo', Foo, {})
-- :Foo

-- Level 3 function invoked by an event
vim.api.nvim_create_autocmd('TextYankPost', { callback = Foo })
-- try yanking some text

-- Level 4 map our function to a keyboard sequence
vim.keymap.set('n', 'xy', Foo)

Updated: 21 September 2024

Per project configuration. A starting point:

:help dap.ext.vscode.load_launchjs

Updated: 04 July 2025

Flash yanked text

autocmd("TextYankPost", {
    pattern = "*",
    desc = "Highlight text on yank.",
    callback = function ()
        vim.highlight.on_yank { higroup = "Search", timeout = 150 }
    end,
})

Set syntax highlighting for /etc/hosts file

vim.api.nvim_create_autocmd('BufRead', {
  pattern = '/etc/hosts',
  desc = 'Set syntax highlighting for /etc/hosts file.',
  callback = function()
    -- Only the 'bash' filetype seems to work!
    vim.opt.filetype = 'bash'
  end,
})

Updated: 18 October 2025

Light themes

Some popular themes with a light variant.

GitHub stars Feb 24	Repository
4.8K	https://github.com/folke/tokyonight.nvim
3.3K	https://github.com/rebelot/kanagawa.nvim
4.3K	https://github.com/catppuccin/nvim
582	https://github.com/Mofiqul/vscode.nvim
1.9K	https://github.com/projekt0n/github-nvim-theme

Error reading ShaDa

Resolution of Error while reading ShaDa file: there is an item at position …

Find all ShaDa related directories and files

find ~ -iname '*shada*'

Example list of folders returned by the find command above

/home/chris/.local/state/lvim/shada/
/home/chris/.local/state/nvim/shada/
/home/chris/.local/share/nvim/shada/
/home/chris/.cache/lvim/

Delete all shada files in these directories.

rm -rf ~/.local/state/lvim/shada
rm -rf ~/.local/state/nvim/shada
rm -rf ~/.local/share/nvim/shada
rm -rf ~/.cache/lvim

Swap files

Delete all swap files

rm -rf ~/.local/state/nvim/swap/*

Command line args

Mimics a fresh install of Nvim. “Factory defaults”, skip user config, plugins and shada

nvim --clean

Cause Nvim to look for configuration files in ~/.config/nvimfoo instead of ~/.config/nvim. Useful for experimenting with multiple Neovim configurations on the same system. See here for a potentially better strategy on Linux, using cgroups namespaces.

NVIM_APPNAME=nvimfoo nvim

Key maps

Write all your keymaps to file (credit)

:redir > key_maps.txt | map | redir END

Updated: 18 September 2025

• nvim-treesitter supported languages
• Try :checkhealth and look for the tree sitter section.

Install one or more treesitter parsers

:TSInstall <language_to_install>

Get a list of all available languages and their installation status

:TSInstallInfo

If required, install the tree sitter CLI

npm install -g tree-sitter
npm install -g tree-sitter-cli