neovim/lua/options.lua

--
-- ███╗   ██╗███████╗ ██████╗ ██╗   ██╗██╗███╗   ███╗
-- ████╗  ██║██╔════╝██╔═══██╗██║   ██║██║████╗ ████║
-- ██╔██╗ ██║█████╗  ██║   ██║██║   ██║██║██╔████╔██║
-- ██║╚██╗██║██╔══╝  ██║   ██║╚██╗ ██╔╝██║██║╚██╔╝██║
-- ██║ ╚████║███████╗╚██████╔╝ ╚████╔╝ ██║██║ ╚═╝ ██║
-- ╚═╝  ╚═══╝╚══════╝ ╚═════╝   ╚═══╝  ╚═╝╚═╝     ╚═╝
--
-- File: options.lua
-- Description: General Neovim settings and configuration
-- Author: Kien Nguyen-Tuan <kiennt2609@gmail.com>
local cmd = vim.cmd
-- Set options (global/buffer/windows-scoped)
local opt = vim.opt
-- Global variables
local g = vim.g
local indent = 4

g.mapleader = " "

cmd [[
	filetype plugin indent on
]]

opt.backspace = { "eol", "start", "indent" } -- allow backspacing over everything in insert mode
opt.clipboard = "unnamedplus"                -- allow neovim to access the system clipboard
opt.fileencoding = "utf-8"                   -- the encoding written to a file
opt.encoding = "utf-8"                       -- the encoding
opt.matchpairs = { "(:)", "{:}", "[:]", "<:>" }
opt.syntax = "enable"

-- indention
opt.autoindent = true    -- auto indentation
opt.expandtab = true     -- convert tabs to spaces
opt.shiftwidth = indent  -- the number of spaces inserted for each indentation
opt.smartindent = true   -- make indenting smarter
opt.softtabstop = indent -- when hitting <BS>, pretend like a tab is removed, even if spaces
opt.tabstop = indent     -- insert 2 spaces for a tab
opt.shiftround = true    -- use multiple of shiftwidth when indenting with "<" and ">"

-- tabline
opt.showtabline = 2 -- always show tabs
opt.sessionoptions = "curdir,folds,globals,help,tabpages,terminal,winsize"
-- search
opt.hlsearch = true   -- highlight all matches on previous search pattern
opt.ignorecase = true -- ignore case in search patterns
opt.smartcase = true  -- smart case
opt.wildignore = opt.wildignore + { "*/node_modules/*", "*/.git/*", "*/vendor/*" }
opt.wildmenu = true   -- make tab completion for files/buffers act like bash

-- ui
opt.cursorline = true -- highlight the current line
opt.laststatus = 2    -- only the last window will always have a status line
opt.lazyredraw = true -- don"t update the display while executing macros
opt.list = true
-- You can also add "space" or "eol", but I feel it"s quite annoying
opt.listchars = {
  tab = "┊ ",
  trail = "·",
  extends = "»",
  precedes = "«",
  nbsp = "×",
}

-- Hide cmd line
opt.cmdheight = 0      -- more space in the neovim command line for displaying messages

opt.mouse = "a"        -- allow the mouse to be used in neovim
opt.number = true      -- set numbered lines
opt.scrolloff = 0      -- minimal number of screen lines to keep above and below the cursor
opt.sidescrolloff = 3  -- minimal number of screen columns to keep to the left and right (horizontal) of the cursor if wrap is `false`
opt.signcolumn = "yes" -- always show the sign column, otherwise it would shift the text each time
opt.splitbelow = true  -- open new split below
opt.splitright = true  -- open new split to the right
opt.wrap = true        -- display a wrapped line

-- backups
opt.backup = false      -- create a backup file
opt.swapfile = false    -- creates a swapfile
opt.writebackup = false -- if a file is being edited by another program (or was written to file while editing with another program), it is not allowed to be edited

-- autocomplete
opt.completeopt = { "menu", "menuone", "noselect" } -- mostly just for cmp
opt.shortmess = opt.shortmess + {
  c = true,
} -- hide all the completion messages, e.g. "-- XXX completion (YYY)", "match 1 of 2", "The only match", "Pattern not found"

-- By the way, -- INSERT -- is unnecessary anymore because the mode information is displayed in the statusline.
opt.showmode = false

-- perfomance
-- remember N lines in history
opt.history = 100    -- keep 100 lines of history
opt.redrawtime = 1500
opt.timeoutlen = 250 -- time to wait for a mapped sequence to complete (in milliseconds)
opt.ttimeoutlen = 10
opt.updatetime = 100 -- signify default updatetime 4000ms is not good for async update

-- theme
opt.termguicolors = true -- enable 24-bit RGB colors

-- persistent undo
-- Don"t forget to create folder $HOME/.local/share/nvim/undo
local undodir = vim.fn.stdpath "data" .. "/undo"
opt.undofile = true -- enable persistent undo
opt.undodir = undodir
opt.undolevels = 1000
opt.undoreload = 10000

-- fold
opt.foldmethod = "marker"
opt.foldlevel = 99

-- Disable builtin plugins
local disabled_built_ins = {
  "2html_plugin",
  "getscript",
  "getscriptPlugin",
  "gzip",
  "logipat",
  "netrw",
  "netrwPlugin",
  "netrwSettings",
  "netrwFileHandlers",
  "matchit",
  "tar",
  "tarPlugin",
  "rrhelper",
  "spellfile_plugin",
  "vimball",
  "vimballPlugin",
  "zip",
  "zipPlugin",
  "tutor",
  "rplugin",
  "synmenu",
  "optwin",
  "compiler",
  "bugreport",
  "ftplugin",
}

for _, plugin in pairs(disabled_built_ins) do
  g["loaded_" .. plugin] = 1
end

-- Colorscheme
-- By default, use rose-pine
cmd.colorscheme "rose-pine"

-- Enable virtual_lines feature if the current nvim version is 0.11+
if vim.fn.has "nvim-0.11" > 0 then
  vim.diagnostic.config {
    -- Use the default configuration
    virtual_lines = true,

    -- Alternatively, customize specific options
    -- virtual_lines = {
    --  -- Only show virtual line diagnostics for the current cursor line
    --  current_line = true,
    -- },
  }
end