nichts/modules/programs/editors/nvf/lua/display/ui.lua

local opt = vim.opt

-- luacheck: ignore
-- When true, all the windows are automatically made the same size after splitting or closing a window.
-- When false, splitting a window will reduce the size of the current window and leave the other windows the same.
opt.equalalways = false
opt.cmdheight = 1      -- Better display for messages
opt.colorcolumn = '+0' -- Align text at 'textwidth'
opt.showtabline = 2    -- Always show the tabs line
opt.helpheight = 0     -- Disable help window resizing
opt.winwidth = 30      -- Minimum width for active window
opt.winminwidth = 1    -- Minimum width for inactive windows
opt.winheight = 1      -- Minimum height for active window
opt.winminheight = 1   -- Minimum height for inactive window
opt.pumheight = 10     -- Maximum number of items to show in the popup menu
opt.winminwidth = 1    -- min width of inactive window
-- opt.pumblend = 100  -- Popup blend, 100 means transparent

opt.cursorline = true
opt.whichwrap:append('<,>,h,l,[,]')

opt.list = true
-- characters to fill the statuslines, vertical separators and special
-- lines in the window.opt.whichwrap:append('<,>,h,l,[,]')
opt.fillchars:append({
    -- replace window border with slightly thicker characters
    -- although taking a bit of more space, it helps me better
    -- identify the window borders
    horiz = '━',
    horizup = '┻',
    horizdown = '┳',
    vert = '┃',
    vertleft = '┫',
    vertright = '┣',
    verthoriz = '╋',

    eob = ' ', -- suppress end of buffer lines (~)
    diff = '╱', -- deleted lines of the 'diff' option

    msgsep = '‾',

    -- replace fold chars
    fold = ' ',
    foldopen = '',
    foldclose = '',
})

-- List chars that would b shown on all modes
-- better kept simple, because it gets REALLY
-- noisy in an average buffer
local normal_listchars = {
    extends = '›', -- Alternatives: … ,»
    precedes = '‹', -- Alternatives: … ,«
}

opt.listchars = normal_listchars

-- Show listchars while in Insert mode.
local insert_listchars = {
    eol = nil,
    tab = '▎·',
    lead = '·',
    space = '·',
    trail = '.',
    multispace = '… ',
    nbsp = '¤',
}

-- Show listchars while in Insert mode.
vim.api.nvim_create_augroup('InsertModeListChars', { clear = true })
vim.api.nvim_create_autocmd({ 'InsertEnter', 'InsertLeavePre' }, {
    group = 'InsertModeListChars',
    pattern = '*',
    callback = function(args)
        if vim.tbl_contains({ 'quickfix', 'prompt' }, args.match) then
            return
        end

        if args.event == 'InsertEnter' then
            vim.opt_local.listchars = insert_listchars
        else
            vim.opt_local.listchars = normal_listchars
        end

        -- check if ibl is enabled
        -- @diagnostic disable-next-line: no-unknown, unused-local
        local status_ok, ibl = pcall(require, 'ibl')
        if not status_ok then
            return
        end
        require('ibl').debounced_refresh(0)
    end,
})