if executable('ag')
  let g:ackprg = 'ag --vimgrep --smart-case' " Use the_silver_searcher for Ack

  noremap <Leader>\ :Ack<Space>
  noremap <Leader><Tab> :Ack <C-r><C-w><CR>

  " Use Ag over Grep
  set grepprg=ag\ --nogroup\ --nocolor

  " Use ag in CtrlP for listing files. Lightning fast and respects .gitignore
  let g:ctrlp_user_command = 'ag %s -l --nocolor -g ""'
endif