-- TODO:
-- " Conceal mostly for markdown TODO :h conceallevel
-- set conceallevel=2
-- " Highlight VCS conflict markers TODO: translate to LUA
-- match ErrorMsg '^\(<\|=\|>\)\{7\}\([^=].\+\)\?$'

-- local g = vim.g      -- a table to access global variables
local opt = vim.opt  -- to set options
local cmd = vim.cmd  -- to set options

cmd('au TextYankPost * lua vim.highlight.on_yank { timeout = 250 }')
cmd('colorscheme nord')

opt.smartindent   = true            -- Autoindenting when starting a new line
opt.completeopt = {'menu', 'menuone', 'noselect'}
opt.tabstop       = 2               -- Tab counts as 2 columns
opt.shiftwidth    = 2               -- Numbers of spaces to (auto)indent
opt.expandtab     = true            -- Tabs to spaces
opt.clipboard     = 'unnamedplus'   -- Share clipboard with the OS
opt.number        = true            -- Display line numbers
opt.fillchars = {
  vert = '▕',   -- alternatives │
  eob = ' ',    -- suppress ~ at EndOfBuffer
  msgsep = '‾',
  diff = '⣿',
  fold = ' ',
  foldopen = '▾',
  foldsep = '│',
  foldclose = '▸',
}
opt.synmaxcol     = 500             -- Do not try to highlight lines longer than 500 characters
opt.lazyredraw    = true            -- Do not redraw while running macros
opt.showmatch     = true            -- Show matching braces
opt.matchtime     = 2               -- Show matching braces for 2 tenths of second
opt.showmode      = true            -- Shows when you are in insert mode
opt.title         = true            -- Show title in console status bar
opt.laststatus    = 3               -- Single status line
opt.wrap          = false           -- Dont wrap lines
opt.scrolloff     = 5               -- Keep 5 rows on the screen when scrolling
opt.sidescrolloff = 15              -- Horizontal scrolloff
opt.visualbell    = false           -- No visual bell
opt.backup        = false           -- No backups
opt.writebackup   = false           -- No backups
opt.swapfile      = false           -- No backups
opt.mouse         = 'a'             -- Support mouse (for proper mouse highlight)
opt.list          = true            -- List mode
opt.listchars     = { trail = '·', tab = '->' }
opt.timeoutlen    = 1000            -- Delay for mappings
opt.ttimeoutlen   = 0               -- Delay between modes
opt.shellcmdflag  = '-ic'           -- Enables aliases from .bashrc in :! commands
opt.termguicolors = true            -- 24-bit RGB color


if vim.fn.executable('rg') > 0 then
  vim.o.grepprg = [[rg --glob "!.git" --no-heading --vimgrep --follow $*]]
end

-- Use in vertical diff mode, blank lines to keep sides aligned, Ignore whitespace changes
opt.diffopt = vim.opt.diffopt
  + {
    'vertical',
    'iwhite',
    'hiddenoff',
    'foldcolumn:0',
    'context:4',
    'algorithm:histogram',
    'indent-heuristic',
  }

opt.shortmess = {
  t = true, -- truncate file messages at start
  A = true, -- ignore annoying swap file messages
  o = true, -- file-read message overwrites previous
  O = true, -- file-read message overwrites previous
  T = true, -- truncate non-file messages in middle
  f = true, -- (file x of x) instead of just (x of x
  F = true, -- Don't give file info when editing a file, NOTE: this breaks autocommand messages
  s = true,
  I = true, -- disable welcome message (:intro)
  a = true, -- shortmess for everything
  c = true,
  W = true, -- Don't show [w] or written when writing
}

-- ignore when autocompleting
opt.wildignore = {
  '*.aux', '*.out', '*.toc', '*.o', '*.obj',
  '*.dll', '*.jar', '*.pyc', '*.rbc', '*.class',
  '*.gif', '*.ico', '*.jpg', '*.jpeg', '*.png',
  '*.avi', '*.wav', '*.*~', '*~ ', '*.swp',
  '.lock', '.DS_Store', 'tags.lock'
}