Better option parsing for rbenv-install

  RBENV_ROOT="${HOME}/.rbenv"

fi

DEFINITION="$1"

case "$DEFINITION" in

"" | -* )

  { echo "usage: rbenv install VERSION"

    echo "       rbenv install /path/to/definition"

# Load shared library functions

eval "$(ruby-build --lib)" && lib

usage() {

  { echo "usage: rbenv install [-k|--keep] [-v|--verbose] VERSION"

    echo "       rbenv install [-k|--keep] [-v|--verbose] /path/to/definition"

    echo "       rbenv install -l|--list"

    echo

    echo "Available versions:"

    ruby-build --definitions | sed 's/^/  /'

    echo "  -l/--list        List all available versions"

    echo "  -k/--keep        Keep source tree in \$RBENV_BUILD_ROOT after installation"

    echo "                   (defaults to ${RBENV_ROOT}/sources)"

    echo "  -v/--verbose     Verbose mode: print compilation status to stdout"

    echo

  } >&2

  exit 1

  [ -z "$1" ] || exit "$1"

}

unset KEEP

unset VERBOSE

parse_options "$@"

for option in "${OPTIONS[@]}"; do

  case "$option" in

  "h" | "help" )

    usage 0

    ;;

"-k" | "--keep" )

  [ -z "${RBENV_BUILD_ROOT}" ] && RBENV_BUILD_ROOT="${RBENV_ROOT}/sources"

  RUBY_BUILD_OPTIONS="${RUBY_BUILD_OPTIONS} -k"

  "l" | "list" )

    echo "Available versions:"

    ruby-build --definitions | sed 's/^/  /'

    exit

    ;;

  "k" | "keep" )

    [ -n "${RBENV_BUILD_ROOT}" ] || RBENV_BUILD_ROOT="${RBENV_ROOT}/sources"

    ;;

  "v" | "verbose" )

    VERBOSE="-v"

    ;;

  "version" )

    exec ruby-build --version

    ;;

  * )

    usage 1

    ;;

  esac

done

DEFINITION="${ARGUMENTS[0]}"

[ -n "$DEFINITION" ] || usage 1

VERSION_NAME="${DEFINITION##*/}"

PREFIX="${RBENV_ROOT}/versions/${VERSION_NAME}"

# If RBENV_BUILD_ROOT is set, then always pass keep options to ruby-build

if [ -n "${RBENV_BUILD_ROOT}" ]; then

  export RUBY_BUILD_BUILD_PATH="${RBENV_BUILD_ROOT}/${VERSION_NAME}"

  RUBY_BUILD_OPTIONS="${RUBY_BUILD_OPTIONS} -k"

  KEEP="-k"

fi

ruby-build "$DEFINITION" "$PREFIX" "$RUBY_BUILD_OPTIONS"

ruby-build $KEEP $VERBOSE "$DEFINITION" "$PREFIX"

rbenv rehash