local function make_autocmds(groups)
    for name, commands in pairs(groups) do
        vim.cmd('augroup my_' .. name)
        vim.cmd('autocmd!')
        for _, item in ipairs(commands) do
            vim.cmd('autocmd ' .. table.concat(item, ' '))
        end
        vim.cmd('augroup END')
    end
end

make_autocmds {
    buffers = {
        { 'BufNewFile,BufRead', 'bash_profile,bashrc,profile', 'set filetype=sh' },
        { 'BufNewFile,BufRead', 'gitconfig', 'set filetype=gitconfig' },
        { 'BufNewFile,BufRead', '*.sx,*.s19', 'set filetype=srec' },
        { 'BufNewFile,BufRead', 'Vagrantfile', 'set filetype=ruby' },
    },
    filetypes = {
        { 'FileType', 'gitcommit', 'setlocal textwidth=72' },
        { 'FileType', 'gitcommit,markdown,text', 'setlocal formatoptions+=t spell' },
        { 'FileType', 'python', 'setlocal foldmethod=indent foldignore=' },
        { 'FileType', 'vim', 'set foldmethod=marker' },
    },
    windows = {
        -- Disable cursorline when entering Insert mode (but remember it)...
        { 'InsertEnter', '*', 'let g:stored_cursorline=&cursorline | set nocursorline' },
        -- ...and re-enable when leaving if it had been set before.
        { 'InsertLeave', '*', 'let &cursorline=g:stored_cursorline' },
    },
    yank = {
        -- Briefly highlight yanked text.
        { 'TextYankPost', '*', 'silent! lua vim.highlight.on_yank()' },
    },
}