nvim/lua/config/autocmd.lua

vim.api.nvim_set_hl(0, 'NormalFloat', { bg = '#282828' })
vim.api.nvim_set_hl(0, 'FloatBorder', { bg = 'NONE' })
vim.api.nvim_set_hl(0, 'Pmenu', { bg = 'NONE' })

-- Use 'q' to quit from common plugins
vim.api.nvim_create_autocmd({ 'FileType' }, {
	pattern = { 'qf', 'help', 'man', 'lspinfo', 'spectre_panel', 'lir' },
	callback = function()
		vim.cmd [[
      nnoremap <silent> <buffer> q :close<CR> 
      set nobuflisted 
    ]]
	end,
})

-- use 2 spaces for cpp
vim.api.nvim_create_autocmd({ 'FileType' }, {
	pattern = { 'cpp', 'cc', 'hpp', 'hh', 'md', 'markdown' },
	callback = function()
		vim.opt.ts = 2
		vim.opt.sw = 2
		vim.opt.expandtab = true
	end,
})

vim.cmd "autocmd BufEnter * ++nested if winnr('$') == 1 && bufname() == 'NvimTree_' . tabpagenr() | quit | endif"

-- Fixes Autocomment
vim.api.nvim_create_autocmd({ 'BufWinEnter' }, {
	callback = function()
		vim.cmd 'set formatoptions-=cro'
	end,
})

-- Highlight Yanked Text
vim.api.nvim_create_autocmd({ 'TextYankPost' }, {
	callback = function()
		vim.highlight.on_yank { higroup = 'Visual', timeout = 200 }
	end,
})

vim.api.nvim_create_augroup('diagnostics', { clear = true })

vim.api.nvim_create_autocmd({ 'DiagnosticChanged' }, {
	group = 'diagnostics',
	callback = function()
		vim.diagnostic.setloclist { open = false }
	end,
})

vim.cmd [[autocmd BufWinEnter quickfix silent :lua ToggleTroubleAuto()]]