vimrc

set laststatus=2
let &statusline = '%!StatusLine()'

function! StatusLine() abort
  if &hlsearch
    " XXX: 'l', 'h' do not move current cursor!
    let searchcount = matchstr(execute('keepjumps keepmarks %s//&/gne', 'silent'), '\d\+')
    let searchcount = printf(' (%s/%s)', searchcount !=# '' ? searchcount : '0', @/)
  else
    let searchcount = ''
  endif
  return '%f%( [%M%R%H%W]%)%( [%{&ft}]%) %{&fenc}/%{&ff}'
  \   .  '%('
  \   .  '%( %{line(".")}/%{line("$")}%)'
  \   .  '%)'
  \   .  searchcount
endfunction