vim.opt.compatible = false
vim.opt.showmatch = true
vim.opt.hlsearch = true
vim.opt.incsearch = false
vim.opt.tabstop = 4
vim.opt.softtabstop  = 4
vim.opt.expandtab = true -- spaces not tabs
vim.opt.shiftwidth = 4
vim.opt.autoindent = true
vim.opt.relativenumber = true
vim.opt.number = true
vim.opt.wildmode = "longest,list"
vim.opt.cursorline = true
vim.opt.ttyfast = true
vim.opt.scrolloff = 5
vim.opt.wrap = false
vim.opt.mouse = ""
vim.opt.termguicolors = true -- enable truecolor
vim.opt.undofile = true
vim.opt.undodir = os.getenv("HOME").."/.local/share/nvim/undodir"
vim.opt.updatetime = 50
vim.opt.colorcolumn = "79"
vim.opt.cmdheight = 0 -- remove the last interface line under statusline
---
vim.g.netrw_preview  = 1
vim.g.netrw_liststyle = 3
vim.g.netrw_winsize = 25
--
--These will:
--
--	1. Make vertical splitting the default for previewing files
--	2. Make the default listing style "tree"
--	3. When a vertical preview window is opened, the directory listing
--	   will use only 30% of the columns available; the rest of the window
--	   is used for the preview window.

vim.g.mapleader = " "

-- move highlighted lines up and down, automatic indentation
vim.keymap.set("v", "J", ":m '>+1<CR>gv=gv")
vim.keymap.set("v", "K", ":m '<-2<CR>gv=gv")

-- replace highlighted area without adding to register
vim.keymap.set("x", "<leader>p", "\"_dP")

-- copy to system clipboard 
vim.keymap.set("n", "<leader>y", "\"+y")
vim.keymap.set("v", "<leader>y", "\"+y")
vim.keymap.set("n", "<leader>Y", "\"+Y")

-- open side panel explorer
vim.keymap.set("n", "<leader>e", ":Lexplore<CR>")