" Set tabstop, softtabstop and shiftwidth to the same value
" http://vimcasts.org/episodes/tabs-and-spaces/
function! set_tab#Stab()
  let l:tabstop = 1 * input('set tabstop = softtabstop = shiftwidth = ')
  if l:tabstop > 0 
    let &l:sts = l:tabstop
    let &l:ts = l:tabstop
    let &l:sw = l:tabstop
  endif
  call s:SummarizeTabs()
endfunction

function! s:SummarizeTabs()
  try 
    echohl ModeMsg
    echon 'tabstop='.&l:ts
    echon ' shiftwidth='.&l:sw
    echon ' softtabstop='.&l:sts
    if &l:et
      echon ' expandtab'
    else
      echon ' noexpandtab'
    endif
  finally
    echohl None
  endtry
endfunction