#!/usr/bin/env bash

# __rvm_select implementation version patch_level
__rvm_select() {
  if [[ -z "$rvm_ruby_string" ]] ; then
    rvm_ruby_string="${rvm_ruby_interpreter}"
    if [[ ! -z "$rvm_ruby_version" ]] ; then rvm_ruby_string="$rvm_ruby_string-$rvm_ruby_version" ; fi
    if [[ ! -z "$rvm_ruby_patch_level" ]] ; then rvm_ruby_string="$rvm_ruby_string-$rvm_ruby_patch_level" ; fi
    if [[ ! -z "$rvm_ruby_revision" ]] ; then rvm_ruby_string="$rvm_ruby_string-$rvm_ruby_revision" ; fi
  fi

  __rvm_ruby_string

  rvm_archive_extension="tar.gz"

  case "$rvm_ruby_interpreter" in
    macruby)
      if [[ "Darwin" = "$(uname)" ]] ; then
        rvm_ruby_package_name=${rvm_ruby_interpreter}-${rvm_ruby_version}
        if [[ "$rvm_head_flag" -eq 1 ]] ; then
          unset rvm_ruby_version rvm_ruby_tag
          rvm_ruby_revision="head"
          __rvm_db "macruby_repo_url" "rvm_ruby_repo_url"
          rvm_url="$rvm_ruby_repo_url"
          rvm_ruby_string="${rvm_ruby_interpreter}-head"
        elif [[ "nightly" = "$rvm_ruby_version" ]] ; then
          __rvm_db "macruby_nightly_url" "rvm_url"
          rvm_ruby_string="${rvm_ruby_interpreter}-${rvm_ruby_version}"
          rvm_ruby_package_name="${rvm_ruby_interpreter}_nightly-${rvm_ruby_version}"
          rvm_ruby_package_file="$rvm_ruby_package_name"
        else
          __rvm_db "macruby_version" "rvm_ruby_version"
          __rvm_db "macruby_url" "rvm_url"
          rvm_ruby_package_name="MacRuby%20${rvm_ruby_version}.zip"
          rvm_ruby_package_file="$rvm_ruby_package_name"
          rvm_url="$rvm_url/$rvm_ruby_package_name"
        fi

        unset rvm_ruby_patch_level
      else
        $rvm_scripts_path/log "fail" "MacRuby can only be installed on a Darwin OS."
      fi
    ;;

    rbx|rubinius)
      rvm_archive_extension="tar.gz"
      rvm_ruby_interpreter="rbx"
      rvm_ruby_version=${rvm_ruby_version:-$(__rvm_db "rbx_version")}
      rvm_ruby_repo_url=${rvm_rbx_repo_url:-$(__rvm_db "rubinius_repo_url")}
      if [[ -z "$rvm_head_flag" ]] ; then
        rvm_ruby_patch_level=${rvm_ruby_patch_level:-$(__rvm_db "rbx_patch_level")}
        rvm_ruby_string="${rvm_ruby_string/-prc/-rc}"
        rvm_ruby_string="$(echo "$rvm_ruby_string" | sed 's#-p*#-#')"
        rvm_ruby_package_file="$(echo "rubinius-${rvm_ruby_version}-${rvm_ruby_patch_level}.${rvm_archive_extension}" | sed 's#-p*#-#' )"
        __rvm_db "rbx_url" "rvm_url"
        rvm_url="$rvm_url/$rvm_ruby_package_file"
      else
        unset rvm_ruby_patch_level rvm_ruby_version
        rvm_ruby_string="$rvm_ruby_interpreter-head"
      fi
    ;;

    jruby)
      unset rvm_ruby_patch_level
      if [[ ! -z "$rvm_head_flag" ]] ; then
        rvm_ruby_version="head"
        rvm_ruby_string="jruby-head"
        rvm_ruby_repo_url="${rvm_ruby_repo_url:-$(__rvm_db "jruby_repo_url")}"
        rvm_url="${rvm_ruby_repo_url:-$(__rvm_db "jruby_repo_url")}"
      else
        rvm_archive_extension="tar.gz"
        rvm_ruby_version="${rvm_ruby_version:-"$(__rvm_db "jruby_version")"}"
        jruby_url="$(__rvm_db "jruby_url")"
        rvm_ruby_package_file="${rvm_ruby_interpreter}-bin-${rvm_ruby_version}"
        rvm_ruby_package_name="${rvm_ruby_interpreter}-${rvm_ruby_version}"
        rvm_ruby_string="${rvm_ruby_interpreter}-${rvm_ruby_version}"
        rvm_url="${jruby_url}/${rvm_ruby_version}/${rvm_ruby_package_file}.tar.gz"
        unset jruby_url
      fi
      alias jruby_ng="jruby --ng"
      alias jruby_ng_server="jruby --ng-server"
    ;;

    maglev)
      unset rvm_ruby_patch_level
      maglev_url="$(__rvm_db "maglev_url")"
      if [[ ! -z "$rvm_head_flag" ]] ; then
        rvm_ruby_version="head"
        rvm_ruby_string="maglev-head"
        rvm_ruby_repo_url="${rvm_ruby_repo_url:-$(__rvm_db "maglev_repo_url")}"
        rvm_url="${rvm_ruby_repo_url:-$(__rvm_db "maglev_repo_url")}"
      else
        system="$(uname -s)"
        arch="$(uname -m)"
        rvm_ruby_package_file="MagLev-${rvm_ruby_version}.${system}-${arch}"
        rvm_gemstone_package_file="GemStone-${rvm_ruby_version}.${system}-${arch}"
        rvm_ruby_version="${rvm_ruby_version:-"$(__rvm_db "maglev_version")"}"
        rvm_ruby_package_name="${rvm_ruby_interpreter}-${rvm_ruby_version}"
        rvm_ruby_string="${rvm_ruby_interpreter}-${rvm_ruby_version}"
        rvm_url="${rvm_ruby_url:-"$maglev_url/${rvm_ruby_package_file}.${rvm_archive_extension}"}"
        rvm_gemstone_url="${rvm_gemstone_url:-"$maglev_url/${rvm_gemstone_package_file}.${rvm_archive_extension}"}"
        export MAGLEV_HOME="$rvm_rubies_path/$rvm_ruby_string"
      fi
    ;;

    ironruby)
      unset rvm_ruby_patch_level
      if [[ "$rvm_head_flag" -eq 1 ]] ; then
        rvm_ruby_version="head"
        rvm_ruby_string="${rvm_ruby_interpreter}-${rvm_ruby_version}"
        rvm_ruby_package_name="${rvm_ruby_string}"
        rvm_ruby_repo_url="${rvm_ruby_repo_url:-$(__rvm_db "ironruby_repo_url")}"
        rvm_url="${rvm_ruby_repo_url:-$(__rvm_db "ironruby_repo_url")}"
      else
        rvm_archive_extension="zip"
        rvm_ruby_version=${rvm_ruby_version:-"$(__rvm_db "ironruby_version")"}
        rvm_ruby_string="${rvm_ruby_interpreter}-${rvm_ruby_version}"
        rvm_ruby_package_name="${rvm_ruby_interpreter}-${rvm_ruby_version}"
        rvm_ruby_package_file="${rvm_ruby_interpreter}-${rvm_ruby_version}.${rvm_archive_extension}"
        rvm_url="$(__rvm_db "ironruby_${rvm_ruby_version}_url")${rvm_ruby_package_file}"
      fi
      export rvm_ruby_version rvm_ruby_string rvm_ruby_package_name rvm_ruby_repo_url rvm_url rvm_archive_extension
    ;;

    ree)
      rvm_ruby_interpreter=ree
      rvm_ruby_version=${rvm_ruby_version:-"$(__rvm_db "ree_version")"}
      if [[ ! -z "$rvm_ruby_patch_level" ]] ; then
        rvm_ruby_patch_level="$(echo $rvm_ruby_patch_level | sed 's#^p##')"
        rvm_ruby_string="${rvm_ruby_interpreter}-${rvm_ruby_version}-${rvm_ruby_patch_level}"
      elif [[ "$rvm_head_flag" = 1 ]] ; then
        rvm_ruby_string="${rvm_ruby_interpreter}-${rvm_ruby_version}-head"
      fi

      if [[ "$rvm_ruby_version" != "head" ]]  ; then
        if [[ ! -z "$rvm_ruby_revision" ]] ; then
          unset rvm_ruby_patch_level rvm_ruby_package_file
          rvm_ruby_package_name="ree-$rvm_ruby_version-$rvm_ruby_revision"
        else
          rvm_ruby_package_file="ruby-enterprise-$rvm_ruby_version-$rvm_ruby_patch_level"
          rvm_url="$(__rvm_db "${rvm_ruby_interpreter}_${rvm_ruby_version}_url")/$rvm_ruby_package_file.tar.gz"
        fi
      fi

      if ! $rvm_scripts_path/match "$rvm_ruby_version" "^1\.8" ; then
        $rvm_scripts_path/log "fail" "Unknown Ruby Enterprise Edition version: $rvm_ruby_version"
      fi
    ;;

    mput|shyouhei)
      rvm_ruby_interpreter="mput"
      rvm_ruby_version="head"
      rvm_ruby_string="mput-head"
      unset rvm_ruby_patch_level
      rvm_ruby_repo_url=${rvm_mput_repo_url:-"$(__rvm_db "shyouhei_repo_url")"}
      rvm_url=$rvm_ruby_repo_url
      unset rvm_ruby_configure rvm_ruby_make rvm_ruby_make_install
    ;;

    ruby)
      if [[ -z "$rvm_ruby_version" ]]  && [[ -z "$rvm_head_flag" ]]; then
        $rvm_scripts_path/log "fail" "Unknown ruby version: $rvm_ruby_version"
      else
        rvm_ruby_repo_url="${rvm_ruby_repo_url:-"$(__rvm_db "ruby_repo_url")"}"
      fi
    ;;

    current)
      ruby_binary="$(command -v ruby)"
      if [[ $? -eq 0 ]] && $rvm_scripts_path/match "$ruby_binary" "rvm" ; then
        rvm_ruby_string="$(dirname "$ruby_binary" | xargs dirname | xargs basename)"
      else
        rvm_ruby_interpreter="system"
      fi
    ;;

    default|system|user)
      #no-op?
    ;;

    *)
      if [[ ! -z "$MY_RUBY_HOME" ]] ; then
        rvm_ruby_string=$(basename $MY_RUBY_HOME)
        __rvm_select
      else
        if [[ -z "$rvm_ruby_string" ]] ; then
          $rvm_scripts_path/log "fail" "Ruby implementation '$rvm_ruby_interpreter' is not known."
          return 1
        fi
      fi
  esac

  __rvm_gemset_select

  if [[ ! -z "$rvm_ruby_interpreter" ]] && [[ "system" != "$rvm_ruby_interpreter" ]]  && [[ "default" != "$rvm_ruby_interpreter" ]] ; then
    if [[ ! -z "$rvm_ruby_version" ]] ; then
      rvm_release_version=$(echo $rvm_ruby_version | awk -F'.' '{ print $1 }')
      rvm_major_version=$(echo $rvm_ruby_version | awk -F'.' '{ print $2 }')
      rvm_minor_version=$(echo $rvm_ruby_version | awk -F'.' '{ print $3 }')
    fi

    rvm_ruby_package_name="${rvm_ruby_package_name:-$rvm_ruby_string}"
    rvm_ruby_home="$rvm_rubies_path/$rvm_ruby_string"
    rvm_ruby_log_path="$rvm_log_path/$rvm_ruby_string"
    rvm_ruby_src_path="$rvm_src_path/$rvm_ruby_string"
    rvm_ruby_binary="$rvm_ruby_home/bin/ruby"
    rvm_ruby_irbrc="$rvm_ruby_home/.irbrc"
    rvm_ruby_gem_home="${rvm_gems_path}/${rvm_ruby_string}"
    rvm_ruby_gem_path="${rvm_ruby_gem_home}:${rvm_ruby_gem_home}@global"

    if [[ "maglev" = "$rvm_ruby_interpreter" ]] ; then
      export MAGLEV_HOME="$rvm_ruby_home"
      export GEMSTONE_GLOBAL_DIR=$MAGLEV_HOME
    fi

    if [[ ! -z "$rvm_gemset_name" ]] ; then
      rvm_ruby_gem_home="${rvm_ruby_gem_home}${rvm_gemset_separator}${rvm_gemset_name}"
      rvm_ruby_gem_path="${rvm_ruby_gem_home}:${rvm_gems_path}/${rvm_ruby_string}${rvm_gemset_separator}global"
    fi

    rvm_ruby_selected_flag=1

    mkdir -p $rvm_ruby_log_path

    export rvm_ruby_interpreter rvm_ruby_version rvm_ruby_repo_url rvm_ruby_package_name rvm_url rvm_ruby_patch_level rvm_ruby_configure rvm_ruby_configure_flags rvm_ruby_make rvm_ruby_make_install rvm_ruby_revision rvm_ruby_tag rvm_release_version rvm_major_version rvm_minor_version rvm_gemset_name rvm_gems_path rvm_ruby_gem_home rvm_path rvm_src_path rvm_bin_path rvm_ruby_binary rvm_ruby_home rvm_log_path rvm_ruby_log_path rvm_src_path rvm_ruby_src_path rvm_ruby_irbrc rvm_ruby_selected_flag rvm_ruby_string
  else
    rvm_ruby_interpreter="${rvm_ruby_interpreter:-system}"
  fi

}

__rvm_use() {
  if [[ -z "$rvm_ruby_selected_flag" ]] ; then __rvm_select $* ; fi
  if [[ -z "$rvm_ruby_interpreter" ]] ; then rvm_ruby_interpreter="system" ; fi

  if [[ "system" = "$rvm_ruby_interpreter" ]] ; then

    unset GEM_HOME GEM_PATH BUNDLE_PATH MY_RUBY_HOME RUBY_VERSION IRBRC
    new_path="$(echo $PATH | tr ':' '\n' | awk '$0 !~ /rvm/' | paste -sd : -)"
    new_path="$rvm_bin_path:$new_path"
    if [[ -s $rvm_config_path/system ]] ; then
      grep "MY_RUBY_HOME='$rvm_rubies_path" "$rvm_config_path/system" > /dev/null
      if [[ $? -eq 0 ]] ; then
        rm -f $rvm_config_path/system # 'system' should *not* point to an rvm ruby.
      else
        source $rvm_config_path/system
      fi
    fi

    if [[ "root" = "$(whoami)" ]] ; then
      for binary in ruby gem irb ri rdoc rake erb testrb ; do
        rm -f "$rvm_bin_path/$binary"
      done
    fi

    if [[ ! -z "$rvm_verbose_flag" ]] ; then
      $rvm_scripts_path/log "info" "Now using system ruby."
    fi

    export rvm_ruby_string="system"

  else
    GEM_HOME="$rvm_ruby_gem_home"
    GEM_PATH="$rvm_ruby_gem_path"
    BUNDLE_PATH="$rvm_ruby_gem_home"
    MY_RUBY_HOME="$rvm_ruby_home"
    RUBY_VERSION="$rvm_ruby_string"
    IRBRC="$rvm_ruby_irbrc"

    export GEM_HOME GEM_PATH BUNDLE_PATH MY_RUBY_HOME RUBY_VERSION IRBRC

    if [[ -z "$IRBRC" ]] ; then unset IRBRC ; fi

    if [[ ! -d $MY_RUBY_HOME ]] ; then
      $rvm_scripts_path/log "warn" "$rvm_ruby_interpreter $rvm_ruby_string is not installed."
      if [[ ! -z "$rvm_install_on_use_flag" ]] ; then
        $rvm_scripts_path/manage "install" "$rvm_ruby_string"
      else
        $rvm_scripts_path/log "info" "To install do: 'rvm install $rvm_ruby_string'"
        return 1
      fi
    fi

    # Ensure the environment file for the selected ruby exists.
    __rvm_ensure_has_enviroment_files

    if [[ ! -z "$rvm_verbose_flag" ]] ; then
      $rvm_scripts_path/log "info" "Using $(basename $GEM_HOME | tr '-' ' ' | sed 's/'${rvm_gemset_separator}'/ with gemset /')"
    fi

    new_path="$(echo $PATH | tr ':' '\n' | awk '$0 !~ /rvm/' | paste -sd : -)"
    new_path="$GEM_HOME/bin:$rvm_ruby_global_gems_path/bin:$MY_RUBY_HOME/bin:$rvm_bin_path:$new_path"
  fi

  if [[ ! -z "$rvm_default_flag" ]] && [[ "default" != "$rvm_ruby_interpreter" ]] ; then
    if [[ "root" = "$(whoami)" ]] ; then
      # By not providing the name it uses the base ruby binary names.
      $rvm_scripts_path/wrapper $rvm_ruby_string
    fi
    local environment_id="$(__rvm_environment_identifier)"
    if [[ "system" = "$rvm_ruby_interpreter" ]] ; then
      $rvm_scripts_path/alias delete default &> /dev/null
      rm -f $rvm_config_path/default
      rm -f $rvm_bin_path/default*
      rm -f $rvm_environments_path/default
      rm -f $rvm_wrappers_path/default
    else
      RUBY_VERSION="$($rvm_ruby_home/bin/ruby -v | sed 's#^\(.*\) (.*$#\1#')"
      export GEM_HOME GEM_PATH BUNDLE_PATH MY_RUBY_HOME RUBY_VERSION
      # Delete + then create the default alias.
      $rvm_scripts_path/alias delete default &> /dev/null
      $rvm_scripts_path/alias create default "$environment_id" >& /dev/null
      ln -nfs $rvm_environments_path/$environment_id $rvm_environments_path/default
      ln -nfs $rvm_wrappers_path/$environment_id $rvm_wrappers_path/default
    fi
  fi ; unset rvm_default_flag

  if [[ ! -z "$rvm_wrapper_name" ]] ; then
    $rvm_scripts_path/wrapper "$rvm_ruby_string" "$rvm_wrapper_name" > /dev/null 2>&1
    unset rvm_wrapper_name
  fi

  if [[ ! -z "$rvm_rvmrc_flag" ]]   ; then __rvm_set_rvmrc ; fi
  # Export ruby string and gem set me for extrnal scripts to take advantage of them.
  if [[ ! -z "$rvm_ruby_string" ]]  ; then export rvm_ruby_string  ; fi
  if [[ ! -z "$rvm_gemset_name" ]]  ; then export rvm_gemset_name ; fi
  if [[ ! -z "$new_path" ]]         ; then export PATH="$new_path" ; unset new_path ; fi

  if [[ "maglev" = "$rvm_ruby_interpreter" ]] ; then
    export MAGLEV_HOME="$rvm_ruby_home"
    export GEMSTONE_GLOBAL_DIR=$MAGLEV_HOME
    if [[ -x "$MAGLEV_HOME/gemstone/bin/gslist" ]] ; then
      $MAGLEV_HOME/gemstone/bin/gslist -clv > /dev/null 2>&1 ; result=$?
      if [[ $result -eq 1 ]] ; then $rvm_ruby_home/bin/maglev start ; fi
    fi
  fi

  rvm_hook="after_use" ; source $rvm_scripts_path/hook
}

__rvm_ruby_string() {
  # rvm_ruby_string may designate any of the following items:
  # * rvm_gemset_name
  # * rvm_ruby_interpreter
  # * rvm_ruby_version
  # * rvm_ruby_patch_level
  # * rvm_ruby_revision
  # * rvm_ruby_tag
  # * rvm_ruby_patch

  # Alias'd rubies
  if [[ -z "$rvm_expanding_aliases" ]]; then
    rvm_ruby_string="${rvm_ruby_string:-"default"}"
    expanded_alias_name="$($rvm_scripts_path/alias show "$rvm_ruby_string" 2>/dev/null)"
    if [[ -n "$expanded_alias_name" ]]; then
      rvm_ruby_string="$expanded_alias_name"
    elif [[ "$rvm_ruby_string" = default ]]; then
      # Default is not a known value. Instead, we need to therefore set it to system.
      rvm_ruby_string="system"
    fi
  fi

  set_name=$(echo "$rvm_ruby_string" | awk -F${rvm_gemset_separator} '{print $2}')
  if [[ ! -z "$set_name" ]] ; then rvm_gemset_name="$set_name" ; fi
  ruby_string=$(echo "$rvm_ruby_string" | awk -F${rvm_gemset_separator} '{print $1}')

  __rvm_unset_ruby_variables

  for string in $(echo $ruby_string | tr '-' ' ') ; do
    if [[ "head" = "$string" ]] ; then
      rvm_ruby_revision="head"
      unset rvm_ruby_patch_level rvm_ruby_revision rvm_ruby_tag
      export rvm_head_flag=1
    elif [[ "system" = "$string" ]] ; then
      rvm_ruby_interpreter="system"
      unset rvm_ruby_patch_level rvm_ruby_tag rvm_head_flag rvm_ruby_revision rvm_ruby_version rvm_gemset_name
      return
    elif [[ "nightly" = "$string" ]] ; then
      rvm_ruby_version="nightly"
      rvm_nightly_flag=1
      break
    elif $rvm_scripts_path/match "$string" "^preview" ; then
      rvm_ruby_patch_level="$string"
    elif $rvm_scripts_path/match "$string" "^rc[0-9]" ; then
      rvm_ruby_patch_level="$string"
    elif $rvm_scripts_path/match "$string" "^[0-9]\.[0-9]" ; then
      rvm_ruby_version="$string"
      unset rvm_ruby_revision rvm_ruby_tag
    elif $rvm_scripts_path/match "$string" "^p[0-9]" ; then
      rvm_ruby_patch_level="$string"
    elif $rvm_scripts_path/match "$string" "^[0-9][0-9]" ; then
      if [[ "ree" = "$rvm_ruby_interpreter" ]] ; then
        rvm_ruby_patch_level="$string"
        unset rvm_ruby_revision
      elif [[ "rbx" = "$rvm_ruby_interpreter" ]] ; then
        rvm_ruby_patch_level="$string"
      elif [[ "maglev" = "$rvm_ruby_interpreter" ]] ; then
        rvm_ruby_version="$string"
        unset rvm_ruby_revision rvm_ruby_patch_level
      else
        rvm_ruby_revision="r$string"
      fi
    elif $rvm_scripts_path/match "$string" "^r[0-9]" ; then
      unset rvm_ruby_patch_level
      rvm_ruby_revision="$string"
    elif $rvm_scripts_path/match "$string" "^s[0-9]" ; then
      unset rvm_ruby_revision
      rvm_ruby_sha="$string"
    elif $rvm_scripts_path/match "$string" "^t[v0-9]" ; then
      unset rvm_ruby_patch_level rvm_ruby_revision
      rvm_ruby_tag="$string"
    elif $rvm_scripts_path/match "$string" "^m[0-9]" ; then
      rvm_ruby_mode="$string"
    elif $rvm_scripts_path/match "$string" "^h[a-z0-9]" ; then
      unset rvm_ruby_patch_level rvm_ruby_revision rvm_ruby_tag
      rvm_ruby_patch="$string"
    elif $rvm_scripts_path/match "$string" "^u[a-z0-9]" ; then
      unset rvm_ruby_patch_level rvm_ruby_revision rvm_ruby_tag rvm_ruby_patch
      rvm_ruby_user_tag="$string"
    elif $rvm_scripts_path/match "$string" "^b[0-9][0-9]" ; then
      rvm_ruby_bits="$string"
    elif $rvm_scripts_path/match "ruby rbx jruby macruby ree rubinius maglev mput shyouhei ironruby " "$string " ; then
      # NOTE: The space at the end of each of the above strings is *very* important.
      rvm_ruby_interpreter="$string"
    else
      $rvm_scripts_path/log "error" "Unknown ruby string component: '$string'"
      return 1
    fi
  done

  # Unspecified interpreter
  if [[ -z "$rvm_ruby_interpreter" ]] ; then
    if $rvm_scripts_path/match "$rvm_ruby_version" "^1\.[8-9]" ; then
      rvm_ruby_interpreter="ruby"
    elif $rvm_scripts_path/match "$rvm_ruby_version" "^0.5" ; then
      rvm_ruby_interpreter="macruby"
    elif $rvm_scripts_path/match "$rvm_ruby_version" "^1.[2-4]" ; then
      rvm_ruby_interpreter="jruby"
    fi
  fi

  # Unspecified version
  if [[ -z "$rvm_ruby_version" ]] && [[ -z "$rvm_head_flag" ]]; then
    rvm_ruby_version=${rvm_ruby_version:-"$(__rvm_db "${rvm_ruby_interpreter}_version")"}
  fi

  if [[ -z "$rvm_ruby_version" ]] ; then
    rvm_ruby_string="${rvm_ruby_interpreter}"
  else
    rvm_ruby_string="${rvm_ruby_interpreter}-${rvm_ruby_version}"
  fi

  # Head
  if [[ "$rvm_head_flag" -eq 1 ]] ; then
    rvm_ruby_string="${rvm_ruby_string}-head"
  elif [[ ! -z "$rvm_ruby_revision" ]]  ; then
    rvm_ruby_string="${rvm_ruby_string}-${rvm_ruby_revision}"
  elif [[ ! -z "$rvm_ruby_tag" ]]  ; then
    rvm_ruby_string="${rvm_ruby_string}-${rvm_ruby_tag}"
  elif [[ ! -z "$rvm_ruby_patch_level" ]]  ; then
    rvm_ruby_string="${rvm_ruby_string}-${rvm_ruby_patch_level}"
  elif [[ ! -z "$rvm_ruby_user_tag" ]]  ; then
    rvm_ruby_string="${rvm_ruby_string}-${rvm_ruby_user_tag}"
  else
    patch_level="$(__rvm_db "${rvm_ruby_interpreter}_${rvm_ruby_version}_patch_level")"
    if [[ ! -z "$patch_level" ]] ; then
      if [[ "ree" = "$rvm_ruby_interpreter" ]] || [[ "rbx" = "$rvm_ruby_interpreter" ]] ; then
        rvm_ruby_patch_level="${patch_level}"
      else
        rvm_ruby_patch_level="p${patch_level}"
      fi
    fi
    if [[ ! -z "$rvm_ruby_patch_level" ]] ; then
      rvm_ruby_patch_level="$(echo $rvm_ruby_patch_level | sed 's#^pp#p#')"
      rvm_ruby_string="${rvm_ruby_string}-${rvm_ruby_patch_level}"
      if [[ "ree" = "$rvm_ruby_interpreter" ]] || [[ "rbx" = "$rvm_ruby_interpreter" ]] ; then
        rvm_ruby_string="$(echo $rvm_ruby_string | sed 's#-p*#-#')"
      else
        rvm_ruby_string="$(echo $rvm_ruby_string | sed 's#-pp#-p#')"
      fi
    fi
  fi
}