## The scd script should autoload as a shell function.
  autoload scd
  
  
  ## If the scd function exists, define a change-directory-hook function
  ## to record visited directories in the scd index.
  if [[ ${+functions[scd]} == 1 ]]; then
      scd_chpwd_hook() { scd --add $PWD }
      autoload add-zsh-hook
      add-zsh-hook chpwd scd_chpwd_hook
  fi
  
  
  ## Allow scd usage with unquoted wildcard characters such as "*" or "?".
  alias scd='noglob scd'
  
  
  ## Load the directory aliases created by scd if any.
  if [[ -s ~/.scdalias.zsh ]]; then source ~/.scdalias.zsh; fi