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#!/bin/bash
set +o posix

chdir() {
  cd "$@" >/dev/null
}

BREW_FILE_DIRECTORY="$(chdir "${0%/*}" && pwd -P)"
HOMEBREW_BREW_FILE="$BREW_FILE_DIRECTORY/${0##*/}"

HOMEBREW_PREFIX="${HOMEBREW_BREW_FILE%/*/*}"
HOMEBREW_REPOSITORY="$HOMEBREW_PREFIX"

if [[ -L "$HOMEBREW_BREW_FILE" ]]
then
  BREW_SYMLINK="$(readlink "$HOMEBREW_BREW_FILE")"
  BREW_SYMLINK_DIRECTORY="$(dirname "$BREW_SYMLINK")"
  BREW_FILE_DIRECTORY="$(chdir "$BREW_FILE_DIRECTORY" &&
                         chdir "$BREW_SYMLINK_DIRECTORY" && pwd -P)"
  HOMEBREW_REPOSITORY="${BREW_FILE_DIRECTORY%/*}"
fi

HOMEBREW_LIBRARY="$HOMEBREW_REPOSITORY/Library"

source "$HOMEBREW_LIBRARY/brew.sh"