-- The character coding used within vim. I don't remember why I set this, to be
-- honest.
vim.opt.encoding = "utf-8"

-- allow backspacing overl ine breaks
vim.opt.backspace = "indent,eol,start"

-- copy indent from current line when starting a new line
vim.opt.autoindent = true

-- automatically add an indent after block-opening symbols like {
vim.opt.smartindent = true

-- tab characters are 4
vim.opt.tabstop = 4
vim.opt.softtabstop = 4

-- indent with 4 spaces when creating automatic indents
vim.opt.shiftwidth = 4

-- expand tab characters to spaces
vim.opt.expandtab = true

-- configure the characters used to show whitespace characters
vim.opt.listchars = {
    tab = "▸ ",
    trail = "·",
    precedes = "←",
    extends = "→",
}

-- show whitespace characters by default
vim.opt.list = true

-- perform searches incrementally
vim.opt.incsearch = true

-- use case-insensitive searching unless we see a capital
vim.opt.ignorecase = true
vim.opt.smartcase = true

-- highlight recently searched term
vim.opt.hlsearch = true

-- line numbering on
vim.opt.nu = true

-- wrap long lines
vim.opt.wrap = true

vim.opt.swapfile = false
vim.opt.backup = false
vim.opt.undodir = os.getenv("HOME") .. "/.vim/undoing"
vim.opt.undofile = true

vim.opt.termguicolors = true

vim.opt.scrolloff = 4
vim.opt.updatetime = 50
vim.opt.colorcolumn = "80"

-- Enable mouse mode
vim.opt.mouse = 'a'

-- do not show the mode, it is in the status line
vim.opt.showmode = false


-- use the operating system clipboard for the default yank register
-- vim.opt.clipboard = 'unnamedplus'

-- direction of new open splits
vim.opt.splitright = true
vim.opt.splitbelow = true


-- double-tap escape to exit terminal mode
vim.keymap.set('t', '<Esc><Esc>', '<C-\\><C-n>', {
    desc = 'Exit terminal mode'
})

-- set the cwd of the buffer to the directory of the buffer's file
-- when entering a buffer.
vim.opt.autochdir = true