vim.opt.list = true
vim.opt.listchars = { tab = '⇝·', trail = '·', nbsp = '␣' }

-- disable list mode when inserting stuff, otherwise keep it enabled, it's
-- useful (see also setting lcs)
listinsert = vim.api.nvim_create_augroup('listinsert', { clear = true })
vim.api.nvim_create_autocmd('InsertEnter', {
	desc = 'Disable list mode when starting to insert',
	group = listinsert,
	callback = function() vim.opt.list = false end
})
vim.api.nvim_create_autocmd('InsertLeave', {
	desc = 'Enable list mode when leaving insert mode',
	group = listinsert,
	callback = function() vim.opt.list = true end
})
-- flag trailing spaces as error only when not inserting
tsperrorinsert = vim.api.nvim_create_augroup('tsperrorinsert', { clear = true })
vim.api.nvim_create_autocmd('InsertEnter', {
	desc = 'Disable highlighting trailing spaces in insert mode',
	group = tsperrorinsert,
	callback = function() vim.cmd([[match none /\s\+$/]]) end
})
vim.api.nvim_create_autocmd('InsertLeave', {
	desc = 'Enable highlighting trailing spaces outside of insert mode',
	group = tsperrorinsert,
	callback = function() vim.cmd([[match Error /\s\+$/]]) end
})