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if executable('pt')
  " Tell unite to use ag for searching
  let g:unite_source_grep_command = 'pt'
  let g:unite_source_grep_default_opts = '--nogroup --nocolor --column'
  let g:unite_source_grep_recursive_opt = ''
  let g:unite_source_grep_encoding = 'utf-8'
  " Tell ag.vim to use pt binary
  let g:agprg="pt --column"
  let g:ag_working_path_mode="r"
endif