Bash enhanced 'cd' replacement

cd_shortcuts.sh

# Replace cd functionality to use pushd instead. If file is given, open in default editor. 
#
# You can define an array of keyword-based pre-defined directories which will work anywhere
# Examples:
#   "cd bin" will take you to ~/bin/
#   "cd logs" will take you to /var/log/apache2/
# Setup:
#   Inside your local_env.sh script, define them in this manner:
#     cd_array=(
#       'bin'='/root/bin'
#       'www'='/var/www'
#       'logs'='/var/log/apache2'
#       'apache'='/etc/apache2/sites-available'
#     )
function cd(){
  if [[ "$#" == "0" ]]; then
    pushd $HOME 1>/dev/null
  elif [[ -f "$1" ]]; then
    $EDITOR "$1"
  elif [[ "$1" =~ ^\-+$ ]]; then
    # support multiple dashes and go back through dir stack for each one
    bd ${#1} 1>/dev/null
  elif [[ -d "$1" ]]; then
    pushd "$1" 1>/dev/null
  else
    # If an array called $cd_array is defined, loop through it and check for shortcuts
    # matching $1 to jump to a pre-defined location instead
    for i in "${cd_array[@]}"; do
      keyword=$(echo "$i" | cut -d= -f1)
      path=$(echo "$i" | cut -d= -f2)
      test "$1" == "$keyword" && local newdir="$path" && break
    done
    if [[ ! -z "$newdir" ]]; then
      pushd "$newdir" 1>/dev/null
    else
      printf "cd $1: No such file or directory\n"
    fi
  fi
}
# Display a list of cd aliases
# TODO: enhance with fzf
alias cdlist='printf "\nList of cd aliases:\n\n" && printf "%s\n" ${cd_array[@]} | column -t -s= && echo'

# Add a "back directory" function to change back (with popd) any number of directories
function bd(){
  if [[ -z "$1" ]]; then
    popd &>/dev/null
  else
    for i in $(seq $1); do
      popd &>/dev/null
    done
  fi
}