# enables cycling through the directory stack using
  # Ctrl+Shift+Left/Right
  #
  # left/right direction follows the order in which directories
  # were visited, like left/right arrows do in a browser
  
  # NO_PUSHD_MINUS syntax:
  #  pushd +N: start counting from left of `dirs' output
  #  pushd -N: start counting from right of `dirs' output
  
  insert-cycledleft () {
  	emulate -L zsh
  	setopt nopushdminus
  
  	builtin pushd -q +1 &>/dev/null || true
  	zle reset-prompt
  }
  zle -N insert-cycledleft
  
  insert-cycledright () {
  	emulate -L zsh
  	setopt nopushdminus
  
  	builtin pushd -q -0 &>/dev/null || true
  	zle reset-prompt
  }
  zle -N insert-cycledright

  # These sequences work for xterm, Apple Terminal.app, and probably others.
  # Not for rxvt-unicode, but it doesn't seem differentiate Ctrl-Shift-Arrow
  # from plain Shift-Arrow, at least by default.
  # iTerm2 does not have these key combinations defined by default; you will need
  # to add them under "Keys" in your profile if you want to use this. You can do
  # this conveniently by loading the "xterm with Numeric Keypad" preset.
  bindkey "\e[1;6D" insert-cycledleft
  bindkey "\e[1;6C" insert-cycledright