ruby

,ruby() {
  case "$1" in
    -h|--help)
      echo "usage: _ruby [version] [opts]"
    ;;
    -v|--version)
      echo "_ruby version 0.0.9"
    ;;
    system)
      if [ -n "${_ruby_PATH_fragment}" ]
      then
        export PATH=$(echo "$PATH" | \sed -e "s|${_ruby_PATH_fragment}||" -e "s|::|:|" -e "s|^:||" -e "s|:$||")
      fi
      _ruby_PATH_fragment=''
      if [ -n "${ruby_ROOT}" ]
      then
        unset ruby_ROOT
      fi
      unset RUBYOPT
      unset GEM_HOME
      unset GEM_ROOT
      unset GEM_PATH
    ;;
    "")
      for i in ${__ruby_LIST}; do
        if [ "$i" = "${ruby_ROOT}" ]
        then
          star='*'
        else
          star=' '
        fi
        echo " $star $(basename $i)"
      done
    ;;
    install)
      ruby-build "$1" "$2"
    ;;
    *)
      for i in ${__ruby_LIST}; do
        if [ "$(basename $i)" = "$1" ]
        then
          if [ -n "${ruby_ROOT}" ]
          then
            if [ -n "${_ruby_PATH_fragment}" ]
            then
              export PATH=$(echo "$PATH" | \sed -e "s|${_ruby_PATH_fragment}||" -e "s|::|:|" -e "s|^:||" -e "s|:$||")
            fi
            _ruby_PATH_fragment=''
            if [ -n "${ruby_ROOT}" ]
            then
              unset ruby_ROOT
            fi
            unset RUBYOPT
            unset GEM_HOME
            unset GEM_ROOT
            unset GEM_PATH
          fi
          export ruby_ROOT="$i"
          if [ -n "${_ruby_PATH_fragment}" ]
          then
            export PATH=$(echo "$PATH" | \sed -e "s|${_ruby_PATH_fragment}||" -e "s|::|:|" -e "s|^:||" -e "s|:$||")
          fi
          if [ -n "${_ruby_PATH_fragment}" ]
          then
            _ruby_PATH_fragment="${_ruby_PATH_fragment}:${ruby_ROOT}/bin"
          else
            _ruby_PATH_fragment="${ruby_ROOT}/bin"
          fi
          export PATH="${_ruby_PATH_fragment}:${PATH}"
          export RUBYOPT="$2"
          if [ "$UID" -gt 0 ]
          then
            export GEM_HOME="$HOME/.gem/$(basename $i)"
            export GEM_ROOT="$HOME/.gem/$(basename $i)"
            export GEM_PATH="$HOME/.gem/$(basename $i)"
            if [ -n "${_ruby_PATH_fragment}" ]
            then
              export PATH=$(echo "$PATH" | \sed -e "s|${_ruby_PATH_fragment}||" -e "s|::|:|" -e "s|^:||" -e "s|:$||")
            fi
            if [ -n "${_ruby_PATH_fragment}" ]
            then
              _ruby_PATH_fragment="${_ruby_PATH_fragment}:$HOME/.gem/$(basename $i)/bin"
            else
              _ruby_PATH_fragment="$HOME/.gem/$(basename $i)/bin"
            fi
            export PATH="${_ruby_PATH_fragment}:${PATH}"
          fi
          return 0
        fi
      done
      echo "_ruby: unknown ruby: $1"
    ;;
  esac
}
_ruby_completer() {
  reply=('system')
  for i in ${__ruby_LIST}; do
    reply+=($(basename $i))
  done
}
compctl -K _ruby_completer ,ruby