Vim Google Search

gistfile1.vim

func! WebSearch(url)
  let searchterm = input('Search: ')
  if searchterm != ''
    let url = substitute(a:url, "%query%", searchterm, '')
    call Browse(url)
  end
endfunc

func! Browse(url)
  if has('gui_win32')
    call system("start " . a:url)
  else
    call system("/usr/bin/xdg-open '" . a:url . "' &")
  end
endfunc

map ,g :call WebSearch("https://google.com/search?q=%query%")<cr>