zsh で OOP 的な記法をする感じ

objective.zsh

# -*- sh -*-
# objective.zsh
# $ pwd
# /Users/pasberth
# $ pwd.dirname
# /Users
# $ pwd.basename
# pasberth
# $ pwd.ls -Ahl --color=auto
# lrwxr-xr-x   1 pasberth staff   38  8 22  2012 .zlogin -> /Users/pasberth/.dotfiles/home/.zlogin
# lrwxr-xr-x   1 pasberth staff   39  8 22  2012 .zlogout -> /Users/pasberth/.dotfiles/home/.zlogout
# lrwxr-xr-x   1 pasberth staff   40  9  9  2012 .zprofile -> /Users/pasberth/.dotfiles/home/.zprofile
# lrwxr-xr-x   1 pasberth staff   38  8 22  2012 .zshenv -> /Users/pasberth/.dotfiles/home/.zshenv
function command_not_found_handler {
  local -a instrs cmd arg i
  instrs=($(echo "$0" | sed 's/\./\n/g'))
  shift

  for cmd in $instrs
  do
    type $cmd > /dev/null 2>&1 || return 127
  done

  for i in `seq $#instrs | head -n -1`
  do
    cmd=$instrs[$i]
    arg=$($cmd $arg) || return $?
  done

  cmd=$instrs[-1]
  $cmd $* $arg
}