Neovim tutorials

Introduction to Neovim

Welcome to Neovim editor...

Basic navigation

• Open and close files.
• Navigation commands like moving the cursor and jumping to specific lines.

Editing text

• Editing commands like inserting text, deleting characters/lines, copying, cutting and pasting.

• Modes in Neovim

  • Insert
  • Visual
  • Normal

Searching and Replacing

Search for text within a file and navigate search result Replace operations

Multiple Buffers and Windows

Work with multiple files using buffers and split windows. Manage multiple open files.

Configuration

Create init.lua config file

mkdir nvim
cd nvim
touch init.lua

Basic configuration

local opt = vim.opt

-- line numbers
opt.relativenumber = true -- show relative line numbers
opt.number = true -- shows absolute line number on cursor line (when relative number is on)
...

Key Mappings

-- set leader key to space
vim.g.mapleader = " "

local keymap = vim.keymap
-- use jk to exit insert mode
keymap.set("i", "jk", "<ESC>", { desc = "Exit insert mode with jk" })

-- clear search highlights
keymap.set("n", "<leader>nh", ":nohl<CR>", { desc = "Clear search highlights" })

Plugin Management

Using lazy.nvim plugin manager

local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
vim.fn.system({
    "git",
    "clone",
    "--filter=blob:none",
    "https://github.com/folke/lazy.nvim.git",
    "--branch=stable", -- latest stable release
    lazypath,
})
end
vim.opt.rtp:prepend(lazypath)

Theme and Colorscheme

Set Gruvbox theme.

Status Line and Bufferline

Customize the status line and buffer line with plugins like 'lualine' and 'bufferline'.

File Explorer

nvim-tree or NERDTree

LSP (Language Server Protocol)

Autocompletion and Snippets

nvim-cmp or coc.nvim

Customize Neovim's appearance, plugins, and mappings.

Help for Comptetitive Programmers

To compile and run C++ code

local keymap = vim.keymap

-- Map <F8> to compile and run C++ code
keymap.set('n', '<F8>', [[:w<CR>:!g++ -Wall -Wextra -std=c++17 -o %< % && ./%< <CR>]], { noremap = true})

-- Map <F9> to compile and run C++ code with input file
keymap.set('n', '<F9>', [[:w<CR>:!g++ -Wall -Wextra -std=c++17 -o %< % && ./%< < in <CR>]], { noremap = true})

Using template file

vim.cmd([[autocmd BufNewFile *.cpp 0r ~/.config/nvim/templates/template.cpp | $d]])
vim.cmd([[autocmd BufNewFile *.cc 0r ~/.config/nvim/templates/template.cc | $d]])
vim.cmd([[autocmd BufNewFile *.c 0r ~/.config/nvim/templates/template.c | $d]])