Execute ( SpaceVim plugin: flygrep ):
  edit Makefile
  let g:_spacevim_input_list = ["\<C-u>", 'C', 'O', 'V', 'I', 'M', 'E', 'R', 'A', 'G', 'E', "\<Enter>"]
  let g:_spacevim_input_timeout = 400
  exe 'call SpaceVim#plugins#flygrep#open('
        \ . '{"input" : expand("<cword>"), "files": bufname("%")}'
        \ . ')'
  let g:_spacevim_input_timeout = 0
  let lnr = 0
  for line in readfile('Makefile')
    let lnr += 1
    if line =~# 'COVIMERAGE'
      break
    endif
  endfor
  AssertEqual lnr, 4
  unlet lnr line