<commit_before># Node Version Manager
# Implemented as a POSIX-compliant function
# Should work on sh, dash, bash, ksh, zsh
# To use source this file from your bash profile
#
# Implemented by <NAME> <<EMAIL>>
# with much bash help from <NAME>

{ # this ensures the entire script is downloaded #

NVM_SCRIPT_SOURCE="$_"

nvm_has() {
  type "$1" > /dev/null 2>&1
}

nvm_is_alias() {
  # this is intentionally not "command alias" so it works in zsh.
  \alias "$1" > /dev/null 2>&1
}

nvm_get_latest() {
  local NVM_LATEST_URL
  if nvm_has "curl"; then
    NVM_LATEST_URL="$(curl -q -w "%{url_effective}\n" -L -s -S http://latest.nvm.sh -o /dev/null)"
  elif nvm_has "wget"; then
    NVM_LATEST_URL="$(wget http://latest.nvm.sh --server-response -O /dev/null 2>&1 | command awk '/^  Location: /{DEST=$2} END{ print DEST }')"
  else
    >&2 echo 'nvm needs curl or wget to proceed.'
    return 1
  fi
  if [ "_$NVM_LATEST_URL" = "_" ]; then
    >&2 echo "http://latest.nvm.sh did not redirect to the latest release on Github"
    return 2
  else
    echo "$NVM_LATEST_URL" | command awk -F '/' '{print $NF}'
  fi
}

nvm_download() {
  if nvm_has "curl"; then
    curl -q $*
  elif nvm_has "wget"; then
    # Emulate curl with wget
    ARGS=$(echo "$*" | command sed -e 's/--progress-bar /--progress=bar /' \
                           -e 's/-L //' \
                           -e 's/-I /--server-response /' \
                           -e 's/-s /-q /' \
                           -e 's/-o /-O /' \
                           -e 's/-C - /-c /')
    eval wget $ARGS
  fi
}

nvm_has_system_node() {
  [ "$(nvm deactivate >/dev/null 2>&1 && command -v node)" != '' ]
}

nvm_has_system_iojs() {
  [ "$(nvm deactivate >/dev/null 2>&1 && command -v iojs)" != '' ]
}

nvm_print_npm_version() {
  if nvm_has "npm"; then
    echo " (npm v$(npm --version 2>/dev/null))"
  fi
}

# Make zsh glob matching behave same as bash
# This fixes the "zsh: no matches found" errors
if [ -z "${NVM_CD_FLAGS-}" ]; then
  export NVM_CD_FLAGS=''
fi
if nvm_has "unsetopt"; then
  unsetopt nomatch 2>/dev/null
  NVM_CD_FLAGS="-q"
fi

# Auto detect the NVM_DIR when not set
if [ -z "${NVM_DIR-}" ]; then
  if [ -n "$BASH_SOURCE" ]; then
    NVM_SCRIPT_SOURCE="${BASH_SOURCE[0]}"
  fi
  NVM_DIR="$(cd $NVM_CD_FLAGS "$(dirname "${NVM_SCRIPT_SOURCE:-$0}")" > /dev/null && \pwd)"
  export NVM_DIR
fi
unset NVM_SCRIPT_SOURCE 2> /dev/null


# Setup mirror location if not already set
if [ -z "${NVM_NODEJS_ORG_MIRROR-}" ]; then
  export NVM_NODEJS_ORG_MIRROR="https://nodejs.org/dist"
fi

if [ -z "$NVM_IOJS_ORG_MIRROR" ]; then
  export NVM_IOJS_ORG_MIRROR="https://iojs.org/dist"
fi

nvm_tree_contains_path() {
  local tree
  tree="$1"
  local node_path
  node_path="$2"

  if [ "@$tree@" = "@@" ] || [ "@$node_path@" = "@@" ]; then
    >&2 echo "both the tree and the node path are required"
    return 2
  fi

  local pathdir
  pathdir=$(dirname "$node_path")
  while [ "$pathdir" != "" ] && [ "$pathdir" != "." ] && [ "$pathdir" != "/" ] && [ "$pathdir" != "$tree" ]; do
    pathdir=$(dirname "$pathdir")
  done
  [ "$pathdir" = "$tree" ]
}

# Traverse up in directory tree to find containing folder
nvm_find_up() {
  local path
  path=$PWD
  while [ "$path" != "" ] && [ ! -f "$path/$1" ]; do
    path=${path%/*}
  done
  echo "$path"
}


nvm_find_nvmrc() {
  local dir
  dir="$(nvm_find_up '.nvmrc')"
  if [ -e "$dir/.nvmrc" ]; then
    echo "$dir/.nvmrc"
  fi
}

# Obtain nvm version from rc file
nvm_rc_version() {
  export NVM_RC_VERSION=''
  local NVMRC_PATH
  NVMRC_PATH="$(nvm_find_nvmrc)"
  if [ -e "$NVMRC_PATH" ]; then
    read -r NVM_RC_VERSION < "$NVMRC_PATH"
    echo "Found '$NVMRC_PATH' with version <$NVM_RC_VERSION>"
  else
    >&2 echo "No .nvmrc file found"
    return 1
  fi
}

nvm_version_greater() {
  local LHS
  LHS="$(nvm_normalize_version "$1")"
  local RHS
  RHS="$(nvm_normalize_version "$2")"
  [ "$LHS" -gt "$RHS" ];
}

nvm_version_greater_than_or_equal_to() {
  local LHS
  LHS="$(nvm_normalize_version "$1")"
  local RHS
  RHS="$(nvm_normalize_version "$2")"
  [ "$LHS" -ge "$RHS" ];
}

nvm_version_dir() {
  local NVM_WHICH_DIR
  NVM_WHICH_DIR="$1"
  if [ -z "$NVM_WHICH_DIR" ] || [ "_$NVM_WHICH_DIR" = "_new" ]; then
    echo "$NVM_DIR/versions/node"
  elif [ "_$NVM_WHICH_DIR" = "_iojs" ]; then
    echo "$NVM_DIR/versions/io.js"
  elif [ "_$NVM_WHICH_DIR" = "_old" ]; then
    echo "$NVM_DIR"
  else
    echo "unknown version dir" >&2
    return 3
  fi
}

nvm_alias_path() {
  echo "$(nvm_version_dir old)/alias"
}

nvm_version_path() {
  local VERSION
  VERSION="$1"
  if [ -z "$VERSION" ]; then
    echo "version is required" >&2
    return 3
  elif nvm_is_iojs_version "$VERSION"; then
    echo "$(nvm_version_dir iojs)/$(nvm_strip_iojs_prefix "$VERSION")"
  elif nvm_version_greater 0.12.0 "$VERSION"; then
    echo "$(nvm_version_dir old)/$VERSION"
  else
    echo "$(nvm_version_dir new)/$VERSION"
  fi
}

nvm_ensure_version_installed() {
  local PROVIDED_VERSION
  PROVIDED_VERSION="$1"
  local LOCAL_VERSION
  local EXIT_CODE
  LOCAL_VERSION="$(nvm_version "$PROVIDED_VERSION")"
  EXIT_CODE="$?"
  local NVM_VERSION_DIR
  if [ "_$EXIT_CODE" = "_0" ]; then
    NVM_VERSION_DIR="$(nvm_version_path "$LOCAL_VERSION")"
  fi
  if [ "_$EXIT_CODE" != "_0" ] || [ ! -d "$NVM_VERSION_DIR" ]; then
    VERSION="$(nvm_resolve_alias "$PROVIDED_VERSION")"
    if [ $? -eq 0 ]; then
      echo "N/A: version \"$PROVIDED_VERSION -> $VERSION\" is not yet installed" >&2
    else
      local PREFIXED_VERSION
      PREFIXED_VERSION="$(nvm_ensure_version_prefix "$PROVIDED_VERSION")"
      echo "N/A: version \"${PREFIXED_VERSION:-$PROVIDED_VERSION}\" is not yet installed" >&2
    fi
    return 1
  fi
}

# Expand a version using the version cache
nvm_version() {
  local PATTERN
  PATTERN="$1"
  local VERSION
  # The default version is the current one
  if [ -z "$PATTERN" ]; then
    PATTERN='current'
  fi

  if [ "$PATTERN" = "current" ]; then
    nvm_ls_current
    return $?
  fi

  local NVM_NODE_PREFIX
  NVM_NODE_PREFIX="$(nvm_node_prefix)"
  case "_$PATTERN" in
    "_$NVM_NODE_PREFIX" | "_$NVM_NODE_PREFIX-")
      PATTERN="stable"
    ;;
  esac
  VERSION="$(nvm_ls "$PATTERN" | command tail -n1)"
  if [ -z "$VERSION" ] || [ "_$VERSION" = "_N/A" ]; then
    echo "N/A"
    return 3;
  else
    echo "$VERSION"
  fi
}

nvm_remote_version() {
  local PATTERN
  PATTERN="$1"
  local VERSION
  if nvm_validate_implicit_alias "$PATTERN" 2> /dev/null ; then
    case "_$PATTERN" in
      "_$(nvm_iojs_prefix)")
        VERSION="$(nvm_ls_remote_iojs | command tail -n1)"
      ;;
      *)
        VERSION="$(nvm_ls_remote "$PATTERN")"
      ;;
    esac
  else
    VERSION="$(nvm_remote_versions "$PATTERN" | command tail -n1)"
  fi
  echo "$VERSION"
  if [ "_$VERSION" = '_N/A' ]; then
    return 3
  fi
}

nvm_remote_versions() {
  local NVM_IOJS_PREFIX
  NVM_IOJS_PREFIX="$(nvm_iojs_prefix)"
  local PATTERN
  PATTERN="$1"
  case "_$PATTERN" in
    "_$NVM_IOJS_PREFIX" | "_io.js")
      VERSIONS="$(nvm_ls_remote_iojs)"
    ;;
    "_$(nvm_node_prefix)")
      VERSIONS="$(nvm_ls_remote)"
    ;;
    *)
      if nvm_validate_implicit_alias "$PATTERN" 2> /dev/null ; then
        echo >&2 "Implicit aliases are not supported in nvm_remote_versions."
        return 1
      fi
      VERSIONS="$(echo "$(nvm_ls_remote "$PATTERN")
$(nvm_ls_remote_iojs "$PATTERN")" | command grep -v "N/A" | command sed '/^$/d')"
    ;;
  esac

  if [ -z "$VERSIONS" ]; then
    echo "N/A"
    return 3
  else
    echo "$VERSIONS"
  fi
}

nvm_is_valid_version() {
  if nvm_validate_implicit_alias "$1" 2> /dev/null; then
    return 0
  fi
  case "$1" in
    "$(nvm_iojs_prefix)" | \
    "$(nvm_node_prefix)")
      return 0
    ;;
    *)
      local VERSION
      VERSION="$(nvm_strip_iojs_prefix "$1")"
      nvm_version_greater "$VERSION"
    ;;
  esac
}

nvm_normalize_version() {
  echo "${1#v}" | command awk -F. '{ printf("%d%06d%06d\n", $1,$2,$3); }'
}

nvm_ensure_version_prefix() {
  local NVM_VERSION
  NVM_VERSION="$(nvm_strip_iojs_prefix "$1" | command sed -e 's/^\([0-9]\)/v\1/g')"
  if nvm_is_iojs_version "$1"; then
    nvm_add_iojs_prefix "$NVM_VERSION"
  else
    echo "$NVM_VERSION"
  fi
}

nvm_format_version() {
  local VERSION
  VERSION="$(nvm_ensure_version_prefix "$1")"
  if [ "_$(nvm_num_version_groups "$VERSION")" != "_3" ]; then
    nvm_format_version "${VERSION%.}.0"
  else
    echo "$VERSION"
  fi
}

nvm_num_version_groups() {
  local VERSION
  VERSION="$1"
  VERSION="${VERSION#v}"
  VERSION="${VERSION%.}"
  if [ -z "$VERSION" ]; then
    echo "0"
    return
  fi
  local NVM_NUM_DOTS
  NVM_NUM_DOTS=$(echo "$VERSION" | command sed -e 's/[^\.]//g')
  local NVM_NUM_GROUPS
  NVM_NUM_GROUPS=".$NVM_NUM_DOTS" # add extra dot, since it's (n - 1) dots at this point
  echo "${#NVM_NUM_GROUPS}"
}

nvm_strip_path() {
  echo "$1" | command sed \
    -e "s#$NVM_DIR/[^/]*$2[^:]*:##g" \
    -e "s#:$NVM_DIR/[^/]*$2[^:]*##g" \
    -e "s#$NVM_DIR/[^/]*$2[^:]*##g" \
    -e "s#$NVM_DIR/versions/[^/]*/[^/]*$2[^:]*:##g" \
    -e "s#:$NVM_DIR/versions/[^/]*/[^/]*$2[^:]*##g" \
    -e "s#$NVM_DIR/versions/[^/]*/[^/]*$2[^:]*##g"
}

nvm_prepend_path() {
  if [ -z "$1" ]; then
    echo "$2"
  else
    echo "$2:$1"
  fi
}

nvm_binary_available() {
  # binaries started with node 0.8.6
  local FIRST_VERSION_WITH_BINARY
  FIRST_VERSION_WITH_BINARY="0.8.6"
  nvm_version_greater_than_or_equal_to "$(nvm_strip_iojs_prefix "$1")" "$FIRST_VERSION_WITH_BINARY"
}

nvm_alias() {
  local ALIAS
  ALIAS="$1"
  if [ -z "$ALIAS" ]; then
    echo >&2 'An alias is required.'
    return 1
  fi

  local NVM_ALIAS_PATH
  NVM_ALIAS_PATH="$(nvm_alias_path)/$ALIAS"
  if [ ! -f "$NVM_ALIAS_PATH" ]; then
    echo >&2 'Alias does not exist.'
    return 2
  fi

  command cat "$NVM_ALIAS_PATH"
}

nvm_ls_current() {
  local NVM_LS_CURRENT_NODE_PATH
  NVM_LS_CURRENT_NODE_PATH="$(command which node 2> /dev/null)"
  if [ $? -ne 0 ]; then
    echo 'none'
  elif nvm_tree_contains_path "$(nvm_version_dir iojs)" "$NVM_LS_CURRENT_NODE_PATH"; then
    nvm_add_iojs_prefix "$(iojs --version 2>/dev/null)"
  elif nvm_tree_contains_path "$NVM_DIR" "$NVM_LS_CURRENT_NODE_PATH"; then
    local VERSION
    VERSION="$(node --version 2>/dev/null)"
    if [ "$VERSION" = "v0.6.21-pre" ]; then
      echo "v0.6.21"
    else
      echo "$VERSION"
    fi
  else
    echo 'system'
  fi
}

nvm_resolve_alias() {
  if [ -z "$1" ]; then
    return 1
  fi

  local PATTERN
  PATTERN="$1"

  local ALIAS
  ALIAS="$PATTERN"
  local ALIAS_TEMP

  local SEEN_ALIASES
  SEEN_ALIASES="$ALIAS"
  while true; do
    ALIAS_TEMP="$(nvm_alias "$ALIAS" 2> /dev/null)"

    if [ -z "$ALIAS_TEMP" ]; then
      break
    fi

    if [ -n "$ALIAS_TEMP" ] \
      && command printf "$SEEN_ALIASES" | command grep -e "^$ALIAS_TEMP$" > /dev/null; then
      ALIAS="∞"
      break
    fi

    SEEN_ALIASES="$SEEN_ALIASES\n$ALIAS_TEMP"
    ALIAS="$ALIAS_TEMP"
  done

  if [ -n "$ALIAS" ] && [ "_$ALIAS" != "_$PATTERN" ]; then
    local NVM_IOJS_PREFIX
    NVM_IOJS_PREFIX="$(nvm_iojs_prefix)"
    local NVM_NODE_PREFIX
    NVM_NODE_PREFIX="$(nvm_node_prefix)"
    case "_$ALIAS" in
      "_∞" | \
      "_$NVM_IOJS_PREFIX" | "_$NVM_IOJS_PREFIX-" | \
      "_$NVM_NODE_PREFIX" )
        echo "$ALIAS"
      ;;
      *)
        nvm_ensure_version_prefix "$ALIAS"
      ;;
    esac
    return 0
  fi

  if nvm_validate_implicit_alias "$PATTERN" 2> /dev/null ; then
    local IMPLICIT
    IMPLICIT="$(nvm_print_implicit_alias local "$PATTERN" 2> /dev/null)"
    if [ -n "$IMPLICIT" ]; then
      nvm_ensure_version_prefix "$IMPLICIT"
    fi
  fi

  return 2
}

nvm_resolve_local_alias() {
  if [ -z "$1" ]; then
    return 1
  fi

  local VERSION
  local EXIT_CODE
  VERSION="$(nvm_resolve_alias "$1")"
  EXIT_CODE=$?
  if [ -z "$VERSION" ]; then
    return $EXIT_CODE
  fi
  if [ "_$VERSION" != "_∞" ]; then
    nvm_version "$VERSION"
  else
    echo "$VERSION"
  fi
}

nvm_iojs_prefix() {
  echo "iojs"
}
nvm_node_prefix() {
  echo "node"
}

nvm_is_iojs_version() {
  case "$1" in iojs-*) return 0 ;; esac
  return 1
}

nvm_add_iojs_prefix() {
  command echo "$(nvm_iojs_prefix)-$(nvm_ensure_version_prefix "$(nvm_strip_iojs_prefix "$1")")"
}

nvm_strip_iojs_prefix() {
  local NVM_IOJS_PREFIX
  NVM_IOJS_PREFIX="$(nvm_iojs_prefix)"
  if [ "_$1" = "_$NVM_IOJS_PREFIX" ]; then
    echo
  else
    echo "${1#"$NVM_IOJS_PREFIX"-}"
  fi
}

nvm_ls() {
  local PATTERN
  PATTERN="${1-}"
  local VERSIONS
  VERSIONS=''
  if [ "$PATTERN" = 'current' ]; then
    nvm_ls_current
    return
  fi

  local NVM_IOJS_PREFIX
  NVM_IOJS_PREFIX="$(nvm_iojs_prefix)"
  local NVM_NODE_PREFIX
  NVM_NODE_PREFIX="$(nvm_node_prefix)"
  local NVM_VERSION_DIR_IOJS
  NVM_VERSION_DIR_IOJS="$(nvm_version_dir "$NVM_IOJS_PREFIX")"
  local NVM_VERSION_DIR_NEW
  NVM_VERSION_DIR_NEW="$(nvm_version_dir new)"
  local NVM_VERSION_DIR_OLD
  NVM_VERSION_DIR_OLD="$(nvm_version_dir old)"

  case "$PATTERN" in
    "$NVM_IOJS_PREFIX" | "$NVM_NODE_PREFIX" )
      PATTERN="$PATTERN-"
    ;;
    *)
      if nvm_resolve_local_alias "$PATTERN"; then
        return
      fi
      PATTERN="$(nvm_ensure_version_prefix "$PATTERN")"
    ;;
  esac
  if [ "_$PATTERN" = "_N/A" ]; then
    return
  fi
  # If it looks like an explicit version, don't do anything funny
  local NVM_PATTERN_STARTS_WITH_V
  case $PATTERN in
    v*) NVM_PATTERN_STARTS_WITH_V=true ;;
    *) NVM_PATTERN_STARTS_WITH_V=false ;;
  esac
  if [ $NVM_PATTERN_STARTS_WITH_V = true ] && [ "_$(nvm_num_version_groups "$PATTERN")" = "_3" ]; then
    if [ -d "$(nvm_version_path "$PATTERN")" ]; then
      VERSIONS="$PATTERN"
    elif [ -d "$(nvm_version_path "$(nvm_add_iojs_prefix "$PATTERN")")" ]; then
      VERSIONS="$(nvm_add_iojs_prefix "$PATTERN")"
    fi
  else
    case "$PATTERN" in
      "$NVM_IOJS_PREFIX-" | "$NVM_NODE_PREFIX-" | "system") ;;
      *)
        local NUM_VERSION_GROUPS
        NUM_VERSION_GROUPS="$(nvm_num_version_groups "$PATTERN")"
        if [ "_$NUM_VERSION_GROUPS" = "_2" ] || [ "_$NUM_VERSION_GROUPS" = "_1" ]; then
          PATTERN="${PATTERN%.}."
        fi
      ;;
    esac

    local ZHS_HAS_SHWORDSPLIT_UNSET
    ZHS_HAS_SHWORDSPLIT_UNSET=1
    if nvm_has "setopt"; then
      ZHS_HAS_SHWORDSPLIT_UNSET=$(setopt | command grep shwordsplit > /dev/null ; echo $?)
      setopt shwordsplit
    fi

    local NVM_DIRS_TO_SEARCH1
    NVM_DIRS_TO_SEARCH1=''
    local NVM_DIRS_TO_SEARCH2
    NVM_DIRS_TO_SEARCH2=''
    local NVM_DIRS_TO_SEARCH3
    NVM_DIRS_TO_SEARCH3=''
    local NVM_ADD_SYSTEM
    NVM_ADD_SYSTEM=false
    if nvm_is_iojs_version "$PATTERN"; then
      NVM_DIRS_TO_SEARCH1="$NVM_VERSION_DIR_IOJS"
      PATTERN="$(nvm_strip_iojs_prefix "$PATTERN")"
      if nvm_has_system_iojs; then
        NVM_ADD_SYSTEM=true
      fi
    elif [ "_$PATTERN" = "_$NVM_NODE_PREFIX-" ]; then
      NVM_DIRS_TO_SEARCH1="$NVM_VERSION_DIR_OLD"
      NVM_DIRS_TO_SEARCH2="$NVM_VERSION_DIR_NEW"
      PATTERN=''
      if nvm_has_system_node; then
        NVM_ADD_SYSTEM=true
      fi
    else
      NVM_DIRS_TO_SEARCH1="$NVM_VERSION_DIR_OLD"
      NVM_DIRS_TO_SEARCH2="$NVM_VERSION_DIR_NEW"
      NVM_DIRS_TO_SEARCH3="$NVM_VERSION_DIR_IOJS"
      if nvm_has_system_iojs || nvm_has_system_node; then
        NVM_ADD_SYSTEM=true
      fi
    fi

    if ! [ -d "$NVM_DIRS_TO_SEARCH1" ]; then
      NVM_DIRS_TO_SEARCH1=''
    fi
    if ! [ -d "$NVM_DIRS_TO_SEARCH2" ]; then
      NVM_DIRS_TO_SEARCH2="$NVM_DIRS_TO_SEARCH1"
    fi
    if ! [ -d "$NVM_DIRS_TO_SEARCH3" ]; then
      NVM_DIRS_TO_SEARCH3="$NVM_DIRS_TO_SEARCH2"
    fi

    if [ -z "$PATTERN" ]; then
      PATTERN='v'
    fi
    if [ -n "$NVM_DIRS_TO_SEARCH1$NVM_DIRS_TO_SEARCH2$NVM_DIRS_TO_SEARCH3" ]; then
      VERSIONS="$(command find "$NVM_DIRS_TO_SEARCH1" "$NVM_DIRS_TO_SEARCH2" "$NVM_DIRS_TO_SEARCH3" -maxdepth 1 -type d -name "$PATTERN*" \
        | command sed "
            s#$NVM_VERSION_DIR_IOJS/#$NVM_IOJS_PREFIX-#;
            \#$NVM_VERSION_DIR_IOJS# d;
            s#^$NVM_DIR/##;
            \#^versions\$# d;
            s#^versions/##;
            s#^v#$NVM_NODE_PREFIX-v#;
            s#^\($NVM_IOJS_PREFIX\)[-/]v#\1.v#;
            s#^\($NVM_NODE_PREFIX\)[-/]v#\1.v#" \
        | command sort -t. -u -k 2.2,2n -k 3,3n -k 4,4n \
        | command sed "
            s/^\($NVM_IOJS_PREFIX\)\./\1-/;
            s/^$NVM_NODE_PREFIX\.//" \
      )"
    fi

    if [ "$ZHS_HAS_SHWORDSPLIT_UNSET" -eq 1 ] && nvm_has "unsetopt"; then
      unsetopt shwordsplit
    fi
  fi

  if [ "${NVM_ADD_SYSTEM-}" = true ]; then
    if [ -z "$PATTERN" ] || [ "_$PATTERN" = "_v" ]; then
      VERSIONS="$VERSIONS$(command printf '\n%s' 'system')"
    elif [ "$PATTERN" = 'system' ]; then
      VERSIONS="$(command printf '%s' 'system')"
    fi
  fi

  if [ -z "$VERSIONS" ]; then
    echo "N/A"
    return 3
  fi

  echo "$VERSIONS"
}

nvm_ls_remote() {
  local PATTERN
  PATTERN="$1"
  if nvm_validate_implicit_alias "$PATTERN" 2> /dev/null ; then
    PATTERN="$(nvm_ls_remote "$(nvm_print_implicit_alias remote "$PATTERN")" | command tail -n1)"
  elif [ -n "$PATTERN" ]; then
    PATTERN="$(nvm_ensure_version_prefix "$PATTERN")"
  else
    PATTERN=".*"
  fi
  nvm_ls_remote_index_tab node std "$NVM_NODEJS_ORG_MIRROR" "$PATTERN"
}

nvm_ls_remote_iojs() {
  nvm_ls_remote_index_tab iojs std "$NVM_IOJS_ORG_MIRROR" "$1"
}

nvm_ls_remote_index_tab() {
  if [ "$#" -lt 4 ]; then
    echo "not enough arguments" >&2
    return 5
  fi
  local TYPE
  TYPE="$1"
  local PREFIX
  PREFIX=''
  case "$TYPE-$2" in
    iojs-std) PREFIX="$(nvm_iojs_prefix)-" ;;
    node-std) PREFIX='' ;;
    iojs-*)
      echo "unknown type of io.js release" >&2
      return 4
    ;;
    node-*)
      echo "unknown type of node.js release" >&2
      return 4
    ;;
  esac
  local SORT_COMMAND
  SORT_COMMAND='sort'
  case "$TYPE" in
    node) SORT_COMMAND='sort -t. -u -k 1.2,1n -k 2,2n -k 3,3n' ;;
  esac
  local MIRROR
  MIRROR="$3"
  local PATTERN
  PATTERN="$4"
  local VERSIONS
  if [ -n "$PATTERN" ]; then
    if [ "_$TYPE" = "_iojs" ]; then
      PATTERN="$(nvm_ensure_version_prefix "$(nvm_strip_iojs_prefix "$PATTERN")")"
    else
      PATTERN="$(nvm_ensure_version_prefix "$PATTERN")"
    fi
  else
    PATTERN=".*"
  fi
  ZHS_HAS_SHWORDSPLIT_UNSET=1
  if nvm_has "setopt"; then
    ZHS_HAS_SHWORDSPLIT_UNSET=$(setopt | command grep shwordsplit > /dev/null ; echo $?)
    setopt shwordsplit
  fi
  VERSIONS="$(nvm_download -L -s "$MIRROR/index.tab" -o - \
    | command sed "
        1d;
        s/^/$PREFIX/;
        s/[[:blank:]].*//" \
    | command grep -w "$PATTERN" \
    | $SORT_COMMAND)"
  if [ "$ZHS_HAS_SHWORDSPLIT_UNSET" -eq 1 ] && nvm_has "unsetopt"; then
    unsetopt shwordsplit
  fi
  if [ -z "$VERSIONS" ]; then
    echo "N/A"
    return 3
  fi
  echo "$VERSIONS"
}

nvm_checksum() {
  local NVM_CHECKSUM
  if [ -z "$3" ] || [ "$3" == "sha1" ]; then
    if nvm_has "sha1sum" && ! nvm_is_alias "sha1sum"; then
      NVM_CHECKSUM="$(command sha1sum "$1" | command awk '{print $1}')"
    elif nvm_has "sha1" && ! nvm_is_alias "sha1"; then
      NVM_CHECKSUM="$(command sha1 -q "$1")"
    elif nvm_has "shasum" && ! nvm_is_alias "shasum"; then
      NVM_CHECKSUM="$(shasum "$1" | command awk '{print $1}')"
    else
      echo "Unaliased sha1sum, sha1, or shasum not found." >&2
      return 2
    fi
  else
    if nvm_has "sha256sum" && ! nvm_is_alias "sha256sum"; then
      NVM_CHECKSUM="$(sha256sum "$1" | awk '{print $1}')"
    elif nvm_has "shasum" && ! nvm_is_alias "shasum"; then
      NVM_CHECKSUM="$(shasum -a 256 "$1" | awk '{print $1}')"
    elif nvm_has "sha256" && ! nvm_is_alias "sha256"; then
      NVM_CHECKSUM="$(sha256 -q "$1" | awk '{print $1}')"
    elif nvm_has "gsha256sum" && ! nvm_is_alias "gsha256sum"; then
      NVM_CHECKSUM="$(gsha256sum "$1" | awk '{print $1}')"
    elif nvm_has "openssl" && ! nvm_is_alias "openssl"; then
      NVM_CHECKSUM="$(openssl dgst -sha256 "$1" | rev | awk '{print $1}' | rev)"
    elif nvm_has "libressl" && ! nvm_is_alias "libressl"; then
      NVM_CHECKSUM="$(libressl dgst -sha256 "$1" | rev | awk '{print $1}' | rev)"
    elif nvm_has "bssl" && ! nvm_is_alias "bssl"; then
      NVM_CHECKSUM="$(bssl sha256sum "$1" | awk '{print $1}')"
    else
      echo "Unaliased sha256sum, sha256, or gsha256sum not found." >&2
      echo "WARNING: Continuing *without checksum verification*" >&2
      return
    fi
  fi

  if [ "_$NVM_CHECKSUM" = "_$2" ]; then
    return
  elif [ -z "$2" ]; then
    echo 'Checksums empty' #missing in raspberry pi binary
    return
  else
    echo 'Checksums do not match.' >&2
    return 1
  fi
}

nvm_print_versions() {
  local VERSION
  local FORMAT
  local NVM_CURRENT
  NVM_CURRENT=$(nvm_ls_current)
  echo "$1" | while read -r VERSION; do
    if [ "_$VERSION" = "_$NVM_CURRENT" ]; then
      FORMAT='\033[0;32m-> %12s\033[0m'
    elif [ "$VERSION" = "system" ]; then
      FORMAT='\033[0;33m%15s\033[0m'
    elif [ -d "$(nvm_version_path "$VERSION" 2> /dev/null)" ]; then<commit_msg>Updated warning message when sha256sum utility not found<commit_after># Node Version Manager
# Implemented as a POSIX-compliant function
# Should work on sh, dash, bash, ksh, zsh
# To use source this file from your bash profile
#
# Implemented by <NAME> <<EMAIL>>
# with much bash help from Matthew Ranney

{ # this ensures the entire script is downloaded #

NVM_SCRIPT_SOURCE="$_"

nvm_has() {
  type "$1" > /dev/null 2>&1
}

nvm_is_alias() {
  # this is intentionally not "command alias" so it works in zsh.
  \alias "$1" > /dev/null 2>&1
}

nvm_get_latest() {
  local NVM_LATEST_URL
  if nvm_has "curl"; then
    NVM_LATEST_URL="$(curl -q -w "%{url_effective}\n" -L -s -S http://latest.nvm.sh -o /dev/null)"
  elif nvm_has "wget"; then
    NVM_LATEST_URL="$(wget http://latest.nvm.sh --server-response -O /dev/null 2>&1 | command awk '/^  Location: /{DEST=$2} END{ print DEST }')"
  else
    >&2 echo 'nvm needs curl or wget to proceed.'
    return 1
  fi
  if [ "_$NVM_LATEST_URL" = "_" ]; then
    >&2 echo "http://latest.nvm.sh did not redirect to the latest release on Github"
    return 2
  else
    echo "$NVM_LATEST_URL" | command awk -F '/' '{print $NF}'
  fi
}

nvm_download() {
  if nvm_has "curl"; then
    curl -q $*
  elif nvm_has "wget"; then
    # Emulate curl with wget
    ARGS=$(echo "$*" | command sed -e 's/--progress-bar /--progress=bar /' \
                           -e 's/-L //' \
                           -e 's/-I /--server-response /' \
                           -e 's/-s /-q /' \
                           -e 's/-o /-O /' \
                           -e 's/-C - /-c /')
    eval wget $ARGS
  fi
}

nvm_has_system_node() {
  [ "$(nvm deactivate >/dev/null 2>&1 && command -v node)" != '' ]
}

nvm_has_system_iojs() {
  [ "$(nvm deactivate >/dev/null 2>&1 && command -v iojs)" != '' ]
}

nvm_print_npm_version() {
  if nvm_has "npm"; then
    echo " (npm v$(npm --version 2>/dev/null))"
  fi
}

# Make zsh glob matching behave same as bash
# This fixes the "zsh: no matches found" errors
if [ -z "${NVM_CD_FLAGS-}" ]; then
  export NVM_CD_FLAGS=''
fi
if nvm_has "unsetopt"; then
  unsetopt nomatch 2>/dev/null
  NVM_CD_FLAGS="-q"
fi

# Auto detect the NVM_DIR when not set
if [ -z "${NVM_DIR-}" ]; then
  if [ -n "$BASH_SOURCE" ]; then
    NVM_SCRIPT_SOURCE="${BASH_SOURCE[0]}"
  fi
  NVM_DIR="$(cd $NVM_CD_FLAGS "$(dirname "${NVM_SCRIPT_SOURCE:-$0}")" > /dev/null && \pwd)"
  export NVM_DIR
fi
unset NVM_SCRIPT_SOURCE 2> /dev/null


# Setup mirror location if not already set
if [ -z "${NVM_NODEJS_ORG_MIRROR-}" ]; then
  export NVM_NODEJS_ORG_MIRROR="https://nodejs.org/dist"
fi

if [ -z "$NVM_IOJS_ORG_MIRROR" ]; then
  export NVM_IOJS_ORG_MIRROR="https://iojs.org/dist"
fi

nvm_tree_contains_path() {
  local tree
  tree="$1"
  local node_path
  node_path="$2"

  if [ "@$tree@" = "@@" ] || [ "@$node_path@" = "@@" ]; then
    >&2 echo "both the tree and the node path are required"
    return 2
  fi

  local pathdir
  pathdir=$(dirname "$node_path")
  while [ "$pathdir" != "" ] && [ "$pathdir" != "." ] && [ "$pathdir" != "/" ] && [ "$pathdir" != "$tree" ]; do
    pathdir=$(dirname "$pathdir")
  done
  [ "$pathdir" = "$tree" ]
}

# Traverse up in directory tree to find containing folder
nvm_find_up() {
  local path
  path=$PWD
  while [ "$path" != "" ] && [ ! -f "$path/$1" ]; do
    path=${path%/*}
  done
  echo "$path"
}


nvm_find_nvmrc() {
  local dir
  dir="$(nvm_find_up '.nvmrc')"
  if [ -e "$dir/.nvmrc" ]; then
    echo "$dir/.nvmrc"
  fi
}

# Obtain nvm version from rc file
nvm_rc_version() {
  export NVM_RC_VERSION=''
  local NVMRC_PATH
  NVMRC_PATH="$(nvm_find_nvmrc)"
  if [ -e "$NVMRC_PATH" ]; then
    read -r NVM_RC_VERSION < "$NVMRC_PATH"
    echo "Found '$NVMRC_PATH' with version <$NVM_RC_VERSION>"
  else
    >&2 echo "No .nvmrc file found"
    return 1
  fi
}

nvm_version_greater() {
  local LHS
  LHS="$(nvm_normalize_version "$1")"
  local RHS
  RHS="$(nvm_normalize_version "$2")"
  [ "$LHS" -gt "$RHS" ];
}

nvm_version_greater_than_or_equal_to() {
  local LHS
  LHS="$(nvm_normalize_version "$1")"
  local RHS
  RHS="$(nvm_normalize_version "$2")"
  [ "$LHS" -ge "$RHS" ];
}

nvm_version_dir() {
  local NVM_WHICH_DIR
  NVM_WHICH_DIR="$1"
  if [ -z "$NVM_WHICH_DIR" ] || [ "_$NVM_WHICH_DIR" = "_new" ]; then
    echo "$NVM_DIR/versions/node"
  elif [ "_$NVM_WHICH_DIR" = "_iojs" ]; then
    echo "$NVM_DIR/versions/io.js"
  elif [ "_$NVM_WHICH_DIR" = "_old" ]; then
    echo "$NVM_DIR"
  else
    echo "unknown version dir" >&2
    return 3
  fi
}

nvm_alias_path() {
  echo "$(nvm_version_dir old)/alias"
}

nvm_version_path() {
  local VERSION
  VERSION="$1"
  if [ -z "$VERSION" ]; then
    echo "version is required" >&2
    return 3
  elif nvm_is_iojs_version "$VERSION"; then
    echo "$(nvm_version_dir iojs)/$(nvm_strip_iojs_prefix "$VERSION")"
  elif nvm_version_greater 0.12.0 "$VERSION"; then
    echo "$(nvm_version_dir old)/$VERSION"
  else
    echo "$(nvm_version_dir new)/$VERSION"
  fi
}

nvm_ensure_version_installed() {
  local PROVIDED_VERSION
  PROVIDED_VERSION="$1"
  local LOCAL_VERSION
  local EXIT_CODE
  LOCAL_VERSION="$(nvm_version "$PROVIDED_VERSION")"
  EXIT_CODE="$?"
  local NVM_VERSION_DIR
  if [ "_$EXIT_CODE" = "_0" ]; then
    NVM_VERSION_DIR="$(nvm_version_path "$LOCAL_VERSION")"
  fi
  if [ "_$EXIT_CODE" != "_0" ] || [ ! -d "$NVM_VERSION_DIR" ]; then
    VERSION="$(nvm_resolve_alias "$PROVIDED_VERSION")"
    if [ $? -eq 0 ]; then
      echo "N/A: version \"$PROVIDED_VERSION -> $VERSION\" is not yet installed" >&2
    else
      local PREFIXED_VERSION
      PREFIXED_VERSION="$(nvm_ensure_version_prefix "$PROVIDED_VERSION")"
      echo "N/A: version \"${PREFIXED_VERSION:-$PROVIDED_VERSION}\" is not yet installed" >&2
    fi
    return 1
  fi
}

# Expand a version using the version cache
nvm_version() {
  local PATTERN
  PATTERN="$1"
  local VERSION
  # The default version is the current one
  if [ -z "$PATTERN" ]; then
    PATTERN='current'
  fi

  if [ "$PATTERN" = "current" ]; then
    nvm_ls_current
    return $?
  fi

  local NVM_NODE_PREFIX
  NVM_NODE_PREFIX="$(nvm_node_prefix)"
  case "_$PATTERN" in
    "_$NVM_NODE_PREFIX" | "_$NVM_NODE_PREFIX-")
      PATTERN="stable"
    ;;
  esac
  VERSION="$(nvm_ls "$PATTERN" | command tail -n1)"
  if [ -z "$VERSION" ] || [ "_$VERSION" = "_N/A" ]; then
    echo "N/A"
    return 3;
  else
    echo "$VERSION"
  fi
}

nvm_remote_version() {
  local PATTERN
  PATTERN="$1"
  local VERSION
  if nvm_validate_implicit_alias "$PATTERN" 2> /dev/null ; then
    case "_$PATTERN" in
      "_$(nvm_iojs_prefix)")
        VERSION="$(nvm_ls_remote_iojs | command tail -n1)"
      ;;
      *)
        VERSION="$(nvm_ls_remote "$PATTERN")"
      ;;
    esac
  else
    VERSION="$(nvm_remote_versions "$PATTERN" | command tail -n1)"
  fi
  echo "$VERSION"
  if [ "_$VERSION" = '_N/A' ]; then
    return 3
  fi
}

nvm_remote_versions() {
  local NVM_IOJS_PREFIX
  NVM_IOJS_PREFIX="$(nvm_iojs_prefix)"
  local PATTERN
  PATTERN="$1"
  case "_$PATTERN" in
    "_$NVM_IOJS_PREFIX" | "_io.js")
      VERSIONS="$(nvm_ls_remote_iojs)"
    ;;
    "_$(nvm_node_prefix)")
      VERSIONS="$(nvm_ls_remote)"
    ;;
    *)
      if nvm_validate_implicit_alias "$PATTERN" 2> /dev/null ; then
        echo >&2 "Implicit aliases are not supported in nvm_remote_versions."
        return 1
      fi
      VERSIONS="$(echo "$(nvm_ls_remote "$PATTERN")
$(nvm_ls_remote_iojs "$PATTERN")" | command grep -v "N/A" | command sed '/^$/d')"
    ;;
  esac

  if [ -z "$VERSIONS" ]; then
    echo "N/A"
    return 3
  else
    echo "$VERSIONS"
  fi
}

nvm_is_valid_version() {
  if nvm_validate_implicit_alias "$1" 2> /dev/null; then
    return 0
  fi
  case "$1" in
    "$(nvm_iojs_prefix)" | \
    "$(nvm_node_prefix)")
      return 0
    ;;
    *)
      local VERSION
      VERSION="$(nvm_strip_iojs_prefix "$1")"
      nvm_version_greater "$VERSION"
    ;;
  esac
}

nvm_normalize_version() {
  echo "${1#v}" | command awk -F. '{ printf("%d%06d%06d\n", $1,$2,$3); }'
}

nvm_ensure_version_prefix() {
  local NVM_VERSION
  NVM_VERSION="$(nvm_strip_iojs_prefix "$1" | command sed -e 's/^\([0-9]\)/v\1/g')"
  if nvm_is_iojs_version "$1"; then
    nvm_add_iojs_prefix "$NVM_VERSION"
  else
    echo "$NVM_VERSION"
  fi
}

nvm_format_version() {
  local VERSION
  VERSION="$(nvm_ensure_version_prefix "$1")"
  if [ "_$(nvm_num_version_groups "$VERSION")" != "_3" ]; then
    nvm_format_version "${VERSION%.}.0"
  else
    echo "$VERSION"
  fi
}

nvm_num_version_groups() {
  local VERSION
  VERSION="$1"
  VERSION="${VERSION#v}"
  VERSION="${VERSION%.}"
  if [ -z "$VERSION" ]; then
    echo "0"
    return
  fi
  local NVM_NUM_DOTS
  NVM_NUM_DOTS=$(echo "$VERSION" | command sed -e 's/[^\.]//g')
  local NVM_NUM_GROUPS
  NVM_NUM_GROUPS=".$NVM_NUM_DOTS" # add extra dot, since it's (n - 1) dots at this point
  echo "${#NVM_NUM_GROUPS}"
}

nvm_strip_path() {
  echo "$1" | command sed \
    -e "s#$NVM_DIR/[^/]*$2[^:]*:##g" \
    -e "s#:$NVM_DIR/[^/]*$2[^:]*##g" \
    -e "s#$NVM_DIR/[^/]*$2[^:]*##g" \
    -e "s#$NVM_DIR/versions/[^/]*/[^/]*$2[^:]*:##g" \
    -e "s#:$NVM_DIR/versions/[^/]*/[^/]*$2[^:]*##g" \
    -e "s#$NVM_DIR/versions/[^/]*/[^/]*$2[^:]*##g"
}

nvm_prepend_path() {
  if [ -z "$1" ]; then
    echo "$2"
  else
    echo "$2:$1"
  fi
}

nvm_binary_available() {
  # binaries started with node 0.8.6
  local FIRST_VERSION_WITH_BINARY
  FIRST_VERSION_WITH_BINARY="0.8.6"
  nvm_version_greater_than_or_equal_to "$(nvm_strip_iojs_prefix "$1")" "$FIRST_VERSION_WITH_BINARY"
}

nvm_alias() {
  local ALIAS
  ALIAS="$1"
  if [ -z "$ALIAS" ]; then
    echo >&2 'An alias is required.'
    return 1
  fi

  local NVM_ALIAS_PATH
  NVM_ALIAS_PATH="$(nvm_alias_path)/$ALIAS"
  if [ ! -f "$NVM_ALIAS_PATH" ]; then
    echo >&2 'Alias does not exist.'
    return 2
  fi

  command cat "$NVM_ALIAS_PATH"
}

nvm_ls_current() {
  local NVM_LS_CURRENT_NODE_PATH
  NVM_LS_CURRENT_NODE_PATH="$(command which node 2> /dev/null)"
  if [ $? -ne 0 ]; then
    echo 'none'
  elif nvm_tree_contains_path "$(nvm_version_dir iojs)" "$NVM_LS_CURRENT_NODE_PATH"; then
    nvm_add_iojs_prefix "$(iojs --version 2>/dev/null)"
  elif nvm_tree_contains_path "$NVM_DIR" "$NVM_LS_CURRENT_NODE_PATH"; then
    local VERSION
    VERSION="$(node --version 2>/dev/null)"
    if [ "$VERSION" = "v0.6.21-pre" ]; then
      echo "v0.6.21"
    else
      echo "$VERSION"
    fi
  else
    echo 'system'
  fi
}

nvm_resolve_alias() {
  if [ -z "$1" ]; then
    return 1
  fi

  local PATTERN
  PATTERN="$1"

  local ALIAS
  ALIAS="$PATTERN"
  local ALIAS_TEMP

  local SEEN_ALIASES
  SEEN_ALIASES="$ALIAS"
  while true; do
    ALIAS_TEMP="$(nvm_alias "$ALIAS" 2> /dev/null)"

    if [ -z "$ALIAS_TEMP" ]; then
      break
    fi

    if [ -n "$ALIAS_TEMP" ] \
      && command printf "$SEEN_ALIASES" | command grep -e "^$ALIAS_TEMP$" > /dev/null; then
      ALIAS="∞"
      break
    fi

    SEEN_ALIASES="$SEEN_ALIASES\n$ALIAS_TEMP"
    ALIAS="$ALIAS_TEMP"
  done

  if [ -n "$ALIAS" ] && [ "_$ALIAS" != "_$PATTERN" ]; then
    local NVM_IOJS_PREFIX
    NVM_IOJS_PREFIX="$(nvm_iojs_prefix)"
    local NVM_NODE_PREFIX
    NVM_NODE_PREFIX="$(nvm_node_prefix)"
    case "_$ALIAS" in
      "_∞" | \
      "_$NVM_IOJS_PREFIX" | "_$NVM_IOJS_PREFIX-" | \
      "_$NVM_NODE_PREFIX" )
        echo "$ALIAS"
      ;;
      *)
        nvm_ensure_version_prefix "$ALIAS"
      ;;
    esac
    return 0
  fi

  if nvm_validate_implicit_alias "$PATTERN" 2> /dev/null ; then
    local IMPLICIT
    IMPLICIT="$(nvm_print_implicit_alias local "$PATTERN" 2> /dev/null)"
    if [ -n "$IMPLICIT" ]; then
      nvm_ensure_version_prefix "$IMPLICIT"
    fi
  fi

  return 2
}

nvm_resolve_local_alias() {
  if [ -z "$1" ]; then
    return 1
  fi

  local VERSION
  local EXIT_CODE
  VERSION="$(nvm_resolve_alias "$1")"
  EXIT_CODE=$?
  if [ -z "$VERSION" ]; then
    return $EXIT_CODE
  fi
  if [ "_$VERSION" != "_∞" ]; then
    nvm_version "$VERSION"
  else
    echo "$VERSION"
  fi
}

nvm_iojs_prefix() {
  echo "iojs"
}
nvm_node_prefix() {
  echo "node"
}

nvm_is_iojs_version() {
  case "$1" in iojs-*) return 0 ;; esac
  return 1
}

nvm_add_iojs_prefix() {
  command echo "$(nvm_iojs_prefix)-$(nvm_ensure_version_prefix "$(nvm_strip_iojs_prefix "$1")")"
}

nvm_strip_iojs_prefix() {
  local NVM_IOJS_PREFIX
  NVM_IOJS_PREFIX="$(nvm_iojs_prefix)"
  if [ "_$1" = "_$NVM_IOJS_PREFIX" ]; then
    echo
  else
    echo "${1#"$NVM_IOJS_PREFIX"-}"
  fi
}

nvm_ls() {
  local PATTERN
  PATTERN="${1-}"
  local VERSIONS
  VERSIONS=''
  if [ "$PATTERN" = 'current' ]; then
    nvm_ls_current
    return
  fi

  local NVM_IOJS_PREFIX
  NVM_IOJS_PREFIX="$(nvm_iojs_prefix)"
  local NVM_NODE_PREFIX
  NVM_NODE_PREFIX="$(nvm_node_prefix)"
  local NVM_VERSION_DIR_IOJS
  NVM_VERSION_DIR_IOJS="$(nvm_version_dir "$NVM_IOJS_PREFIX")"
  local NVM_VERSION_DIR_NEW
  NVM_VERSION_DIR_NEW="$(nvm_version_dir new)"
  local NVM_VERSION_DIR_OLD
  NVM_VERSION_DIR_OLD="$(nvm_version_dir old)"

  case "$PATTERN" in
    "$NVM_IOJS_PREFIX" | "$NVM_NODE_PREFIX" )
      PATTERN="$PATTERN-"
    ;;
    *)
      if nvm_resolve_local_alias "$PATTERN"; then
        return
      fi
      PATTERN="$(nvm_ensure_version_prefix "$PATTERN")"
    ;;
  esac
  if [ "_$PATTERN" = "_N/A" ]; then
    return
  fi
  # If it looks like an explicit version, don't do anything funny
  local NVM_PATTERN_STARTS_WITH_V
  case $PATTERN in
    v*) NVM_PATTERN_STARTS_WITH_V=true ;;
    *) NVM_PATTERN_STARTS_WITH_V=false ;;
  esac
  if [ $NVM_PATTERN_STARTS_WITH_V = true ] && [ "_$(nvm_num_version_groups "$PATTERN")" = "_3" ]; then
    if [ -d "$(nvm_version_path "$PATTERN")" ]; then
      VERSIONS="$PATTERN"
    elif [ -d "$(nvm_version_path "$(nvm_add_iojs_prefix "$PATTERN")")" ]; then
      VERSIONS="$(nvm_add_iojs_prefix "$PATTERN")"
    fi
  else
    case "$PATTERN" in
      "$NVM_IOJS_PREFIX-" | "$NVM_NODE_PREFIX-" | "system") ;;
      *)
        local NUM_VERSION_GROUPS
        NUM_VERSION_GROUPS="$(nvm_num_version_groups "$PATTERN")"
        if [ "_$NUM_VERSION_GROUPS" = "_2" ] || [ "_$NUM_VERSION_GROUPS" = "_1" ]; then
          PATTERN="${PATTERN%.}."
        fi
      ;;
    esac

    local ZHS_HAS_SHWORDSPLIT_UNSET
    ZHS_HAS_SHWORDSPLIT_UNSET=1
    if nvm_has "setopt"; then
      ZHS_HAS_SHWORDSPLIT_UNSET=$(setopt | command grep shwordsplit > /dev/null ; echo $?)
      setopt shwordsplit
    fi

    local NVM_DIRS_TO_SEARCH1
    NVM_DIRS_TO_SEARCH1=''
    local NVM_DIRS_TO_SEARCH2
    NVM_DIRS_TO_SEARCH2=''
    local NVM_DIRS_TO_SEARCH3
    NVM_DIRS_TO_SEARCH3=''
    local NVM_ADD_SYSTEM
    NVM_ADD_SYSTEM=false
    if nvm_is_iojs_version "$PATTERN"; then
      NVM_DIRS_TO_SEARCH1="$NVM_VERSION_DIR_IOJS"
      PATTERN="$(nvm_strip_iojs_prefix "$PATTERN")"
      if nvm_has_system_iojs; then
        NVM_ADD_SYSTEM=true
      fi
    elif [ "_$PATTERN" = "_$NVM_NODE_PREFIX-" ]; then
      NVM_DIRS_TO_SEARCH1="$NVM_VERSION_DIR_OLD"
      NVM_DIRS_TO_SEARCH2="$NVM_VERSION_DIR_NEW"
      PATTERN=''
      if nvm_has_system_node; then
        NVM_ADD_SYSTEM=true
      fi
    else
      NVM_DIRS_TO_SEARCH1="$NVM_VERSION_DIR_OLD"
      NVM_DIRS_TO_SEARCH2="$NVM_VERSION_DIR_NEW"
      NVM_DIRS_TO_SEARCH3="$NVM_VERSION_DIR_IOJS"
      if nvm_has_system_iojs || nvm_has_system_node; then
        NVM_ADD_SYSTEM=true
      fi
    fi

    if ! [ -d "$NVM_DIRS_TO_SEARCH1" ]; then
      NVM_DIRS_TO_SEARCH1=''
    fi
    if ! [ -d "$NVM_DIRS_TO_SEARCH2" ]; then
      NVM_DIRS_TO_SEARCH2="$NVM_DIRS_TO_SEARCH1"
    fi
    if ! [ -d "$NVM_DIRS_TO_SEARCH3" ]; then
      NVM_DIRS_TO_SEARCH3="$NVM_DIRS_TO_SEARCH2"
    fi

    if [ -z "$PATTERN" ]; then
      PATTERN='v'
    fi
    if [ -n "$NVM_DIRS_TO_SEARCH1$NVM_DIRS_TO_SEARCH2$NVM_DIRS_TO_SEARCH3" ]; then
      VERSIONS="$(command find "$NVM_DIRS_TO_SEARCH1" "$NVM_DIRS_TO_SEARCH2" "$NVM_DIRS_TO_SEARCH3" -maxdepth 1 -type d -name "$PATTERN*" \
        | command sed "
            s#$NVM_VERSION_DIR_IOJS/#$NVM_IOJS_PREFIX-#;
            \#$NVM_VERSION_DIR_IOJS# d;
            s#^$NVM_DIR/##;
            \#^versions\$# d;
            s#^versions/##;
            s#^v#$NVM_NODE_PREFIX-v#;
            s#^\($NVM_IOJS_PREFIX\)[-/]v#\1.v#;
            s#^\($NVM_NODE_PREFIX\)[-/]v#\1.v#" \
        | command sort -t. -u -k 2.2,2n -k 3,3n -k 4,4n \
        | command sed "
            s/^\($NVM_IOJS_PREFIX\)\./\1-/;
            s/^$NVM_NODE_PREFIX\.//" \
      )"
    fi

    if [ "$ZHS_HAS_SHWORDSPLIT_UNSET" -eq 1 ] && nvm_has "unsetopt"; then
      unsetopt shwordsplit
    fi
  fi

  if [ "${NVM_ADD_SYSTEM-}" = true ]; then
    if [ -z "$PATTERN" ] || [ "_$PATTERN" = "_v" ]; then
      VERSIONS="$VERSIONS$(command printf '\n%s' 'system')"
    elif [ "$PATTERN" = 'system' ]; then
      VERSIONS="$(command printf '%s' 'system')"
    fi
  fi

  if [ -z "$VERSIONS" ]; then
    echo "N/A"
    return 3
  fi

  echo "$VERSIONS"
}

nvm_ls_remote() {
  local PATTERN
  PATTERN="$1"
  if nvm_validate_implicit_alias "$PATTERN" 2> /dev/null ; then
    PATTERN="$(nvm_ls_remote "$(nvm_print_implicit_alias remote "$PATTERN")" | command tail -n1)"
  elif [ -n "$PATTERN" ]; then
    PATTERN="$(nvm_ensure_version_prefix "$PATTERN")"
  else
    PATTERN=".*"
  fi
  nvm_ls_remote_index_tab node std "$NVM_NODEJS_ORG_MIRROR" "$PATTERN"
}

nvm_ls_remote_iojs() {
  nvm_ls_remote_index_tab iojs std "$NVM_IOJS_ORG_MIRROR" "$1"
}

nvm_ls_remote_index_tab() {
  if [ "$#" -lt 4 ]; then
    echo "not enough arguments" >&2
    return 5
  fi
  local TYPE
  TYPE="$1"
  local PREFIX
  PREFIX=''
  case "$TYPE-$2" in
    iojs-std) PREFIX="$(nvm_iojs_prefix)-" ;;
    node-std) PREFIX='' ;;
    iojs-*)
      echo "unknown type of io.js release" >&2
      return 4
    ;;
    node-*)
      echo "unknown type of node.js release" >&2
      return 4
    ;;
  esac
  local SORT_COMMAND
  SORT_COMMAND='sort'
  case "$TYPE" in
    node) SORT_COMMAND='sort -t. -u -k 1.2,1n -k 2,2n -k 3,3n' ;;
  esac
  local MIRROR
  MIRROR="$3"
  local PATTERN
  PATTERN="$4"
  local VERSIONS
  if [ -n "$PATTERN" ]; then
    if [ "_$TYPE" = "_iojs" ]; then
      PATTERN="$(nvm_ensure_version_prefix "$(nvm_strip_iojs_prefix "$PATTERN")")"
    else
      PATTERN="$(nvm_ensure_version_prefix "$PATTERN")"
    fi
  else
    PATTERN=".*"
  fi
  ZHS_HAS_SHWORDSPLIT_UNSET=1
  if nvm_has "setopt"; then
    ZHS_HAS_SHWORDSPLIT_UNSET=$(setopt | command grep shwordsplit > /dev/null ; echo $?)
    setopt shwordsplit
  fi
  VERSIONS="$(nvm_download -L -s "$MIRROR/index.tab" -o - \
    | command sed "
        1d;
        s/^/$PREFIX/;
        s/[[:blank:]].*//" \
    | command grep -w "$PATTERN" \
    | $SORT_COMMAND)"
  if [ "$ZHS_HAS_SHWORDSPLIT_UNSET" -eq 1 ] && nvm_has "unsetopt"; then
    unsetopt shwordsplit
  fi
  if [ -z "$VERSIONS" ]; then
    echo "N/A"
    return 3
  fi
  echo "$VERSIONS"
}

nvm_checksum() {
  local NVM_CHECKSUM
  if [ -z "$3" ] || [ "$3" == "sha1" ]; then
    if nvm_has "sha1sum" && ! nvm_is_alias "sha1sum"; then
      NVM_CHECKSUM="$(command sha1sum "$1" | command awk '{print $1}')"
    elif nvm_has "sha1" && ! nvm_is_alias "sha1"; then
      NVM_CHECKSUM="$(command sha1 -q "$1")"
    elif nvm_has "shasum" && ! nvm_is_alias "shasum"; then
      NVM_CHECKSUM="$(shasum "$1" | command awk '{print $1}')"
    else
      echo "Unaliased sha1sum, sha1, or shasum not found." >&2
      return 2
    fi
  else
    if nvm_has "sha256sum" && ! nvm_is_alias "sha256sum"; then
      NVM_CHECKSUM="$(sha256sum "$1" | awk '{print $1}')"
    elif nvm_has "shasum" && ! nvm_is_alias "shasum"; then
      NVM_CHECKSUM="$(shasum -a 256 "$1" | awk '{print $1}')"
    elif nvm_has "sha256" && ! nvm_is_alias "sha256"; then
      NVM_CHECKSUM="$(sha256 -q "$1" | awk '{print $1}')"
    elif nvm_has "gsha256sum" && ! nvm_is_alias "gsha256sum"; then
      NVM_CHECKSUM="$(gsha256sum "$1" | awk '{print $1}')"
    elif nvm_has "openssl" && ! nvm_is_alias "openssl"; then
      NVM_CHECKSUM="$(openssl dgst -sha256 "$1" | rev | awk '{print $1}' | rev)"
    elif nvm_has "libressl" && ! nvm_is_alias "libressl"; then
      NVM_CHECKSUM="$(libressl dgst -sha256 "$1" | rev | awk '{print $1}' | rev)"
    elif nvm_has "bssl" && ! nvm_is_alias "bssl"; then
      NVM_CHECKSUM="$(bssl sha256sum "$1" | awk '{print $1}')"
    else
      echo "Unaliased sha256sum, shasum, sha256, gsha256sum, openssl, libressl, or bssl not found." >&2
      echo "WARNING: Continuing *without checksum verification*" >&2
      return
    fi
  fi

  if [ "_$NVM_CHECKSUM" = "_$2" ]; then
    return
  elif [ -z "$2" ]; then
    echo 'Checksums empty' #missing in raspberry pi binary
    return
  else
    echo 'Checksums do not match.' >&2
    return 1
  fi
}

nvm_print_versions() {
  local VERSION
  local FORMAT
  local NVM_CURRENT
  NVM_CURRENT=$(nvm_ls_current)
  echo "$1" | while read -r VERSION; do
    if [ "_$VERSION" = "_$NVM_CURRENT" ]; then
      FORMAT='\033[0;32m-> %12s\033[0m'
    elif [ "$VERSION" = "system" ]; then
      FORMAT='\033[0;33m%15s\033[0m'
    elif [ -d "$(nvm_version_path "$VERSION" 2> /dev/null)" ]; then
{'fraction_non_alphanumeric': 0.1577341216860576, 'fraction_numerical': 0.015425329010108716, 'mean_word_length': 3.0327853091048937, 'pattern_counts': {'":': 0, '<': 14, '<?xml version=': 0, '>': 106, 'https://': 4, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 6, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '147678', 'n_tokens_mistral': 17938, 'n_tokens_neox': 17101, 'n_words': 3623}