local o              = vim.opt

vim.g.mapleader      = " " -- must be before any plugins
vim.g.maplocalleader = " "
-- vim.g.editorconfig = true

-- behaviour
o.swapfile           = false
o.undofile           = true
o.undolevels         = 10000
o.updatetime         = 500 -- save swap, trigger CursorHold
o.timeout            = false -- hit <ESC> manually instead
o.timeoutlen         = 600 -- ms to wait for a mapping sequence
o.splitbelow         = true
o.splitright         = true
o.ignorecase         = true
o.smartcase          = true              -- don't ignore case for CAPITALS
o.hlsearch           = true              -- default
o.incsearch          = true              -- default
o.confirm            = true              -- :q when there are changes
o.shortmess          = "atTIcCF"         -- oO?
o.wildmode           = "longest:full,full" -- cmd completion
o.completeopt        = "menu,menuone,longest" -- omnifunc completion
o.mouse              = "a"
o.spell              = false
o.spelllang          = "en_us,uk"
o.spelloptions       = "camel"
o.fileencodings = "ucs-bom,utf-8,default,cp1251"
--o.clipboard = "unnamed"plus?
o.iskeyword:append "-" -- is part of the word
o.formatoptions:append "n" -- indents for numbered lists
-- movement
o.scrolloff        = 7 -- vertical
o.sidescrolloff    = 10
o.autoindent       = true -- default
o.smartindent      = true
o.expandtab        = true -- spaces > tabs
o.tabstop          = 8 -- to see the Tabs, see also `listchars`
o.softtabstop      = 4
o.shiftwidth       = 4 -- >> and <<
o.virtualedit      = "block" -- move cursor anywhere in visual block mode
-- look
o.cmdheight        = 1 -- 0 is experimental
o.rulerformat      = ""
o.pumheight        = 10 -- lines in cmp menu
o.pumblend         = 10 -- cmp menu transparency
o.showmode         = true -- in cmdline
o.wrap             = false
o.linebreak        = true -- when `wrap`, break lines at `breakat`
o.showbreak        = "🞄" -- 🞄➣◜◞◟◝╴└╰... at the beginning of wrapped lines
o.breakindent      = true -- for wrapped blocks to have indent
o.title            = true -- better window title
o.list             = true -- show trailing invisible chars
o.listchars        = "tab:󰌒 ,trail:·,nbsp:%,leadmultispace:                ▏" -- ▎▍
o.colorcolumn      = "80,100"
o.cursorline       = true
o.laststatus       = 0 -- 3 for statusline only on last win; 0 to hide
o.conceallevel     = 3 -- hide markup
o.number           = true
o.numberwidth      = 1 -- minimal possible width
o.rnu              = true
o.signcolumn       = "number"
o.termguicolors    = true -- RGB True color
o.fillchars        = {
    fold = " ",
    foldopen = "",
    foldclose = "",
    foldsep = " ",
    diff = "╱",
    eob = " ",
    lastline = "❭"
}

-- CUSTOM
vim.g.border       = "single" -- :h nvim_open_win
vim.g.border_bleed = { "🭽", "▔", "🭾", "▕", "🭿", "▁", "🭼", "▏" } -- full-bleed

vim.diagnostic.config {
    underline = true,
    virtual_text = {
        spacing = 4,
        source = "if_many",
        severity = { min = vim.diagnostic.severity.WARN },
    },
    -- virtual_lines = true,
    severity_sort = true,
    update_in_insert = false,
    signs = { text = { "⤬", "!", "󰙎", "󱠃" } }, -- E, W, I, H
    float = { source = "if_many", border = vim.g.border_bleed },
}