base

README.md

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-# nvim
-
-Neovim config
+# `Neovim Config`

init.lua

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+require("options")
+require("keymaps")

lua/keymaps.lua

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+-- define common options
+local opts = {
+    noremap = true,      -- non-recursive
+    silent = true,       -- do not show message
+}
+local keymap = vim.keymap.set
+
+vim.g.mapleader = " "    --set leader key
+
+---------------
+-- View Mode --
+---------------
+keymap("v", "J", ":m '>+1<CR>gv=gv", opts)    -- move line down
+keymap("v", "K", ":m '<-2<CR>gv=gv", opts)    -- move line up
+-- Hint: start visual mode with the same area as the previous area and the same mode
+keymap("v", "<Tab>", ">gv", opts)    -- indent right
+keymap("v", "<S-Tab>", "<gv", opts)    -- indent left
+
+-----------------
+-- Normal Mode --
+-----------------
+keymap("n", "J", ":m .+1<CR>==", opts)    -- move line down
+keymap("n", "K", ":m .-2<CR>==", opts)    -- move line up
+keymap("n", "<leader>o", "o<Esc>", opts)    -- insert new line below
+keymap("n", "<leader>O", "O<Esc>", opts)    -- insert new line above
+keymap("n", "<leader>nh", ":nohlsearch<CR>", opts)    -- clear search highlight
+keymap("n", "<Tab>", ">>", opts)    -- indent right
+keymap("n", "<S-Tab>", "<<", opts)    -- indent left
+-- Window Navigation
+keymap("n", "<C-h>", "<C-w>h", opts)    -- move to left window
+keymap("n", "<C-j>", "<C-w>j", opts)    -- move to down window
+keymap("n", "<C-k>", "<C-w>k", opts)    -- move to up window
+keymap("n", "<C-l>", "<C-w>l", opts)    -- move to right window
+keymap("n", "<leader>wh", "<C-w>s", opts)    -- split window horizontally
+keymap("n", "<leader>wv", "<C-w>v", opts)    -- split window vertically
+keymap("n", "<leader>wq", "<C-w>q", opts)    -- close window
+keymap("n", "<leader>wc", "<C-w>c", opts)    -- close window
+-- Resize with arrows
+-- delta: 2 lines
+keymap("n", "<C-Up>", ":resize -2<CR>", opts)
+keymap("n", "<C-Down>", ":resize +2<CR>", opts)
+keymap("n", "<C-Left>", ":vertical resize -2<CR>", opts)
+keymap("n", "<C-Right>", ":vertical resize +2<CR>", opts)
+
+-----------------
+-- Insert Mode --
+-----------------

lua/options.lua

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+local opt = vim.opt
+
+-- Hint: use `:h <option>` to figure out the meaning if needed
+opt.clipboard = "unnamedplus" -- use system clipboard
+opt.completeopt = { "menu", "menuone", "noselect" }
+opt.mouse = "a" -- allow the mouse to be used in Nvim
+
+-- Tab
+opt.tabstop = 4 -- number of visual spaces per TAB
+opt.softtabstop = 4 -- number of spacesin tab when editing
+opt.shiftwidth = 4 -- insert 4 spaces on a tab
+opt.expandtab = true -- tabs are spaces, mainly because of python
+
+-- UI config
+opt.number = true -- show absolute number
+opt.relativenumber = true -- add numbers to each line on the left side
+opt.cursorline = true -- highlight cursor line underneath the cursor horizontally
+opt.splitbelow = true -- open new vertical split bottom
+opt.splitright = true -- open new horizontal splits right
+--opt.termguicolors = true        -- enabl 24-bit RGB color in the TUI
+opt.showmode = false -- we are experienced, wo don"t need the "-- INSERT --" mode hint
+
+
+-- Searching
+opt.incsearch = true -- search as characters are entered
+--opt.hlsearch = false -- do not highlight matches
+opt.ignorecase = true -- ignore case in searches by default
+opt.smartcase = true -- but make it case sensitive if an uppercase is entered