function! user#title_string() abort
  let f = expand('%:t')
  let d = expand('%:~:h')->pathshorten()
  let r = getcwd()->fnamemodify(':~')->pathshorten()
  if &buftype ==# 'help'
    let [dir, file] = ['help', f]
  elseif &buftype ==# 'terminal'
    let [dir, file] = ['terminal', f]
  elseif &buftype ==# 'nofile'
    let [dir, file] = &filetype ==# 'molder' ?
          \   [d, f]
          \ : [r, bufname()]
  elseif &buftype ==# 'quickfix'
    let [dir, file] = [r, 'QuickFix']
  else
    let [dir, file] = [d ?? r, f]
  endif
  return $'{file} ({dir}) - {toupper(v:progname)}'
endfunction

function! user#google(query) abort
  let cmd = ['w3m', $'https://google.com/search?q={a:query}']
  if has('nvim')
    new
    call termopen(cmd)
  else
    call term_start(cmd, #{ term_finish: 'close' })
  endif
endfunction

function! user#auto_mkdir(dir, force) abort
  let msg = $'"{a:dir}" is not a directory. Create?'
  if !isdirectory(a:dir) &&
        \ (a:force || confirm(msg, "&Yes\n&No", 2) < 2)
    call mkdir(a:dir, 'p')
  endif
endfunction

function! user#is_at_end() abort
  return mode() ==# 'c' ?
        \   getcmdpos() > strlen(getcmdline())
        \ : col('.')    > strlen(getline('.'))
endfunction