which-function-mode: only enable in emacs 24.4 and later Emacs 24.3.x has a bug in which-function-mode that causes my emacs to lock up for several seconds. Rather than tolerate that, just disable which-function-mode on those systems.

fpath=(~/.zfun $fpath)
autoload -U ~/.zfun/*(:t)

function af_reloadfuncs()
{
  local f
  f=(~/.zfun/*(.))
  for comp in $f ; do
    unfunction $f:t 2> /dev/null
    autoload -U $f:t
  done
}