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# 安装编译需要的依赖
sudo apt-get install ninja-build gettext cmake unzip curl build-essential


git clone https://github.com/neovim/neovim.git
cd neovim

make CMAKE_BUILD_TYPE=RelWithDebInfo
sudo make install

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# 添加新的软链接到vi编辑器
sudo update-alternatives --install /usr/bin/vi vi /usr/local/bin/nvim 35

# 切换适用新添加的nvim 编辑器
sudo update-alternatives --config vi

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# update-alternatives --config vi
有 3 个候选项可用于替换 vi (提供 /usr/bin/vi)。

  选择       路径               优先级  状态
------------------------------------------------------------
* 0            /usr/local/bin/nvim   35        自动模式
  1            /usr/bin/nvim         30        手动模式
  2            /usr/bin/vim.tiny     15        手动模式
  3            /usr/local/bin/nvim   35        手动模式

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-- load options
require('options')


-- load Packervim
require('plugins')


-- load keymappings
require('keymaps')


-- Set colorscheme
require('colorscheme')


-- Set LSP
require('lsp')

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-- Hint: use `:h <option>` to figure out the meaning if needed
vim.opt.clipboard = 'unnamedplus' -- use system clipboard
vim.opt.completeopt = { 'menu', 'menuone', 'noselect' }
vim.opt.mouse = 'a' -- allow the mouse to be used in Nvim

-- Tab
vim.opt.tabstop = 4 -- number of visual spaces per TAB
vim.opt.softtabstop = 4 -- number of spacesin tab when editing
vim.opt.shiftwidth = 4 -- insert 4 spaces on a tab
vim.opt.expandtab = true -- tabs are spaces, mainly because of python

-- UI config
vim.opt.number = true -- show absolute number
vim.opt.relativenumber = true -- add numbers to each line on the left side
vim.opt.cursorline = true -- highlight cursor line underneath the cursor horizontally
vim.opt.splitbelow = true -- open new vertical split bottom
vim.opt.splitright = true -- open new horizontal splits right
vim.opt.termguicolors = true -- enabl 24-bit RGB color in the TUI
vim.opt.showmode = false -- we are experienced, wo don't need the "-- INSERT --" mode hint

-- Searching
vim.opt.incsearch = true -- search as characters are entered
vim.opt.hlsearch = false -- do not highlight matches
vim.opt.ignorecase = true -- ignore case in searches by default
vim.opt.smartcase = true -- but make it case sensitive if an uppercase is entered

-- for nvim-tree
-- disable netrw at the very start of your init.lua (strongly advised)
vim.g.loaded_netrw = 1
vim.g.loaded_netrwPlugin = 1

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-- define common options
local opts = {
    noremap = true, -- non-recursive
    silent = true, -- do not show message
}

-----------------
-- Normal mode --
-----------------

-- tabs
vim.keymap.set('n', '<C-t>', ':tabnew', opts)
vim.keymap.set('n', '<C-n>', ':tabNext<CR>', opts)
vim.keymap.set('n', '<C-p>', ':tabPrev<CR>', opts)
vim.keymap.set('n', '<C-w>', ':tabclose<CR>', opts)

-- Hint: see `:h vim.keymap.set()`
-- Better window navigation
vim.keymap.set('n', '<C-h>', '<C-w>h', opts)
vim.keymap.set('n', '<C-j>', '<C-w>j', opts)
vim.keymap.set('n', '<C-k>', '<C-w>k', opts)
vim.keymap.set('n', '<C-l>', '<C-w>l', opts)

-- Resize with arrows
-- delta: 2 lines
vim.keymap.set('n', '<C-Up>', ':resize -2<CR>', opts)
vim.keymap.set('n', '<C-Down>', ':resize +2<CR>', opts)
vim.keymap.set('n', '<C-Left>', ':vertical resize -2<CR>', opts)
vim.keymap.set('n', '<C-Right>', ':vertical resize +2<CR>', opts)

-- for nvim-tree
-- default leader key: \
vim.keymap.set('n', '<leader>e', ':NvimTreeToggle<CR>', opts)

-----------------
-- Visual mode --
-----------------

-- Hint: start visual mode with the same area as the previous area and the same mode
vim.keymap.set('v', '<', '<gv', opts)
vim.keymap.set('v', '>', '>gv', opts)